​Citrus limon (Lemon)

Citrus limon (Lemon)

Product Name: Лимон, Citrus limon, Zitrone, Limón, Citron, ليمون, มะนาว, Limon, Лимон, Limon, Лимон, Citrina, Citrons, Лимон, לימון

Synonyms: Лимон, Лимонник, Лимонное дерево, Lemon, Lemon tree, Zitronenbaum, Limón, Árbol de limón, Citronnier, Citron, شجرة الليمون, มะนาว, ต้นมะนาว

Parts Used: fruit, peel, leaves, flowers, seeds, essential oil, juice, zest, bark, essential oil.

Main Indications for Use of Citrus limon: Hyperlipidemia, arterial hypertension, atherosclerosis, acute respiratory viral infections, viral hepatitis, food poisoning, oral candidiasis, furunculosis, obesity, dyspeptic disorders, irritable bowel syndrome, diabetes insipidus, varicose veins, gingivitis, stomatitis, herpesvirus infection, rheumatoid arthritis, gout.

Use of Citrus limon in mixtures and complexes: Chronic venous insufficiency, ischemic heart disease, pancreatitis, ankylosing spondylitis, urolithiasis, hepatocholecystitis, diabetic retinopathy, seborrheic dermatitis, chronic gastritis with reduced secretion, oncological diseases (as part of supportive therapy), myalgias, chronic fatigue syndrome.

Pharmacological Properties of Citrus limon: antioxidant, antiseptic, hypolipidemic, antiviral, antimicrobial, anti-inflammatory, vascular-strengthening, immunomodulatory, hepatoprotective, spasmolytic, choleretic, diuretic, antiallergic, repellent, astringent, antiglycemic, adaptogenic, deodorizing, antidepressant, cytotoxic (against tumor cells).

Dosage of Pharmaceutical Forms — Citrus limon

Powder — Citrus limon

Indications (Powder): Atherosclerosis, hyperlipidemia, viral hepatitis, dyspeptic disorders, oral candidiasis, gingivitis, obesity, herpesvirus infection.

Standard Dosage (Powder): 1.5 grams of powder 2 times a day 30 minutes before meals, course 21 days.

Enhanced Dosage (Powder): 3 grams of powder 2 times a day 30 minutes before meals. Recommended for viral hepatitis, obesity, hyperlipidemia.

Maximum Dosage (Powder): 5 grams of powder 2 times a day. Permissible for pronounced intestinal dysbiosis and hypercholesterolemia, under laboratory parameter monitoring.

Preventive Dosage (Powder): 0.5 grams of powder once a day in the morning on an empty stomach. Recommended for patients with chronic gastritis, lipid metabolism disorders, mild immunodeficiency. Frequency — 20 days of intake, 10 days break.

Pediatric Dosage (Powder): From 6 years of age and body weight from 20 kg: 0.25 grams of powder once a day after meals. Used under pediatrician supervision.

Contraindications (Powder): Gastric ulcer in the acute stage, gastritis with increased acidity, allergy to citrus fruits. Data on contraindications during pregnancy, lactation, and childhood under 6 years of age have not been scientifically registered.

Side Effects (Powder): With overdose, heartburn, nausea, irritation of the gastric mucosa are possible.

Adjustment for Patient Body Weight: For patients with body weight less than 60 kg — the dosage is reduced by 30%. For patients above 90 kg — an increase of dosage up to 20% is possible under tolerability monitoring.

Preparation Method (Powder): Dried zest and lemon pulp without seeds are used. The raw material is ground at a temperature not exceeding 40 degrees Celsius to a powder state. To prepare 100 grams of powder, 700 grams of fresh lemons are required. After cleaning and removing seeds, the mass is dried in a dehydrator for 36 hours at a temperature of 38–40 degrees, then ground in a pharmaceutical mill.

Storage Conditions and Shelf Life (Powder): Store in an airtight package made of dark glass or multilayer material. Temperature regime — from 5 to 25 degrees Celsius. Avoid direct sunlight, protect from electromagnetic radiation. Shelf life — up to 12 months. After opening, use within 45 days.

Dry Extract — Citrus limon

Indications (Dry Extract): Atherosclerosis, hyperlipidemia, gingivitis, oral candidiasis, gout, rheumatoid arthritis, herpesvirus infection.

Standard Dosage (Dry Extract): 200 milligrams of dry extract 2 times a day after meals, for 3 weeks.

Enhanced Dosage (Dry Extract): 400 milligrams 2 times a day. Used for rheumatoid arthritis, viral herpetic infection, gout.

Maximum Dosage (Dry Extract): 600 milligrams 2 times a day. Permissible for pronounced inflammatory joint conditions or chronic viral infections.

Preventive Dosage (Dry Extract): 100 milligrams once a day in the morning, in courses of 20 days. Recommended for persons with an increased risk of metabolic disorders, for chronic fatigue, to maintain vascular tone.

Pediatric Dosage (Dry Extract): From 7 years of age: 50 milligrams once a day after meals. Used for vitamin deficiency, frequent colds.

Contraindications (Dry Extract): Allergy to citrus fruits, gastritis with increased acidity, phenylketonuria. Data on safety during pregnancy and lactation have not been scientifically confirmed.

Side Effects (Dry Extract): Rarely, dyspepsia, skin rashes, increased irritation of the gastric mucosa are possible.

Adjustment for Patient Body Weight: For weight less than 60 kg — a dosage of no more than 150 milligrams per intake is recommended. For body weight above 85 kg, an increase of dosage up to 300 milligrams is permissible without the risk of side effects.

Preparation Method (Dry Extract): Fresh lemon fruits without peel are used. The juice is squeezed out, then subjected to concentration under vacuum at a temperature not exceeding 50 degrees until an extract with a density of 1.35 g/ml is obtained. After that, it is dried by lyophilization to obtain a dry extract. For 100 grams of dry extract, about 1.5 kg of fresh fruits are required.

Storage Conditions and Shelf Life (Dry Extract): Store in an airtight package in a dry, dark room at a temperature not exceeding 25 degrees Celsius. Avoid contact with moisture and direct sunlight. Shelf life — 18 months. After opening, use within 30 days.

Alcohol Tincture — Citrus limon

Indications (Alcohol Tincture): Atherosclerosis, hypertension, viral hepatitis, herpesvirus infection, rheumatoid arthritis, furunculosis, varicose veins, chronic cholecystitis.

Standard Dosage (Alcohol Tincture): 15 drops of alcohol tincture 2 times a day after meals, dissolved in 50 ml of water. Course — 21 days.

Enhanced Dosage (Alcohol Tincture): 25 drops 3 times a day, used for viral hepatitis, chronic vasculitis, systemic inflammatory arthropathies.

Maximum Dosage (Alcohol Tincture): 30 drops 3 times a day. Permissible for herpetic infection with frequent relapses, viral hepatitis C, pronounced vascular inflammation.

Preventive Dosage (Alcohol Tincture): 10 drops once a day in the morning, in courses of 10 days each month. Recommended for chronic fatigue, decreased vascular tone, chronic cholecystitis.

Pediatric Dosage (Alcohol Tincture): From 12 years of age: 5 drops once a day after meals, diluted in 50 ml of warm water. Only under medical supervision.

Contraindications (Alcohol Tincture): Alcoholism, epilepsy, acute psychoses, gastritis with increased acidity, gastric ulcer. Data on contraindications during pregnancy and lactation have not been registered.

Side Effects (Alcohol Tincture): With overdose, dizziness, hypertension, gastric irritation, tremor are possible.

Adjustment for Patient Body Weight: For patients with weight less than 50 kg — no more than 10 drops per intake. For weight above 85 kg — an increase of dosage up to 25 drops is possible without pronounced risks.

Preparation Method (Alcohol Tincture): Per 100 grams of product: fresh lemon zest — 25 grams, lemon leaves — 10 grams, 70% ethyl alcohol — 75 milliliters. All components are infused in an airtight glass container in the dark at a temperature of 20–22 degrees Celsius for 10 days. Shake daily. Then filter through gauze and pour into dark vials.

Storage Conditions and Shelf Life (Alcohol Tincture): Store in a tightly closed dark glass container at a temperature from 5 to 20 degrees Celsius. Keep away from fire and heat sources. Shelf life — 2 years. After opening, use within 90 days.

Oil Infusion — Citrus limon

Indications (Oil Infusion): Gingivitis, periodontosis, varicose veins, seborrheic dermatitis, herpesvirus infection, fungal skin lesions, skin cracks of the feet and elbows.

Standard Dosage (Oil Infusion): Topically — apply 1–2 ml of infusion 2 times a day to the affected skin or mucous membrane area. Course — from 10 to 30 days.

Enhanced Dosage (Oil Infusion): Apply 2–3 ml of infusion 3 times a day. Recommended for varicose veins with skin pigmentation, candidiasis of skin folds, pronounced seborrheic dermatitis.

Maximum Dosage (Oil Infusion): Up to 5 ml 3 times a day. Permissible short-term for recurrent herpes, purulent dermatoses.

Preventive Dosage (Oil Infusion): Apply 1 ml once a day to the area of the veins of the lower extremities or to the facial skin (with a tendency to acne). Use 2 weeks per month.

Pediatric Dosage (Oil Infusion): From 5 years of age: apply 0.5 ml once a day to a limited skin area. Topical use only.

Contraindications (Oil Infusion): Individual intolerance to citrus oils, weeping eczema, allergic dermatitis in the acute stage. Safety of use during pregnancy and lactation has not been studied.

Side Effects (Oil Infusion): Skin irritation, phototoxic reactions under exposure to sunlight after application.

Adjustment for Patient Body Weight: Correction is not required for topical use. For patients with weight less than 40 kg, apply no more than 1 ml at a time.

Preparation Method (Oil Infusion): Lemon zest — 30 grams, lemon leaves — 10 grams, cold-pressed coconut oil — 60 milliliters. Grind the zest and leaves, place in a glass container, pour with oil, heat in a water bath at a temperature of 45 degrees for 3 hours. Cool, infuse for another 48 hours at room temperature in the shade. Strain through cloth.

Storage Conditions and Shelf Life (Oil Infusion): Store in an airtight glass container, away from direct light and heating. Storage temperature — from 10 to 25 degrees. Shelf life — up to 6 months. After opening, use within 30 days.

Vaginal Suppository — Citrus limon

Indications (Vaginal Suppository): Vaginal candidiasis, trichomonas colpitis, bacterial vaginosis, viral herpetic infection of the genital organs, atrophic vaginitis.

Standard Dosage (Vaginal Suppository): 1 suppository weighing 2.5 grams once a day at night. Course — 7–10 days.

Enhanced Dosage (Vaginal Suppository): 1 suppository 2 times a day. Used for pronounced candidiasis and viral infections.

Maximum Dosage (Vaginal Suppository): Up to 3 suppositories per day in acute stages under gynecologist supervision. Permissible for viral vaginitis and severe forms of bacterial vaginosis.

Preventive Dosage (Vaginal Suppository): 1 suppository every other day before bedtime. Use for 10 days consecutively once every 2 months for women with recurrent candidiasis or in menopause with atrophic changes of the mucosa.

Pediatric Dosage (Vaginal Suppository): Not used in girls under 16 years of age. Data on the safety of use in childhood have not been registered.

Contraindications (Vaginal Suppository): Cervical erosion, allergy to citrus fruits, acute inflammatory diseases of the pelvis. Safety of use during pregnancy has not been established.

Side Effects (Vaginal Suppository): Burning, itching, irritation of the vaginal mucosa in case of hypersensitivity or overdose.

Adjustment for Patient Body Weight: Not required. The use of standard dosages does not depend on body weight.

Preparation Method (Vaginal Suppository): Per 100 grams: dry lemon extract — 10 grams, coconut oil — 60 grams, beeswax — 30 grams. All components are heated in a water bath until a homogeneous mass (not above 60 degrees Celsius), poured into molds of 2.5 grams. Cooled until solidified.

Storage Conditions and Shelf Life (Vaginal Suppository): Store in a refrigerator at a temperature from +2 to +8 degrees Celsius. Protect from light and moisture. Shelf life — up to 6 months. After opening the package, use within 10 days.

Rectal Suppository — Citrus limon

Indications (Rectal Suppository): Hemorrhoids, proctitis, chronic constipation, viral proctitis, anal fissures, inflammation of the pelvic veins.

Standard Dosage (Rectal Suppository): 1 suppository weighing 2 grams once a day after defecation. Course — 10 days.

Enhanced Dosage (Rectal Suppository): 1 suppository 2 times a day. Used for acute hemorrhoids, thrombosis of the rectal veins.

Maximum Dosage (Rectal Suppository): Up to 3 suppositories per day. Used for viral or bacterial lesions of the anorectal area, only under medical supervision.

Preventive Dosage (Rectal Suppository): 1 suppository every other day at night for 10 days, repeat every 2 months. Recommended for patients with chronic hemorrhoids, sedentary lifestyle, venous insufficiency.

Pediatric Dosage (Rectal Suppository): From 10 years of age: half a suppository weighing 1 gram once a day. Only as prescribed by a pediatrician.

Contraindications (Rectal Suppository): Allergy to components, anal fissures with bleeding, acute proctitis. Safety of use during pregnancy has not been established.

Side Effects (Rectal Suppository): Burning, painful urges to defecate, mucosal hyperemia.

Adjustment for Patient Body Weight: For patients with weight less than 50 kg — it is recommended to use suppositories weighing 1 gram. For body weight more than 90 kg — an increase in suppository weight up to 2.5 grams is possible.

Preparation Method (Rectal Suppository): Dry lemon extract — 8 grams, coconut oil — 60 grams, cocoa butter — 32 grams. The ingredients are heated to 50 degrees Celsius in a water bath, mixed, poured into molds, cooled until completely solidified.

Storage Conditions and Shelf Life (Rectal Suppository): Store in a refrigerator at a temperature of +2…+8 degrees Celsius, in an airtight container. Protect from light and moisture. Shelf life — up to 6 months. After opening the package, use within 7 days.

Nasal Drops — Citrus limon

Indications (Nasal Drops): Acute rhinitis, viral sinusitis, bacterial rhinosinusitis, allergic rhinitis, vasomotor rhinitis.

Standard Dosage (Nasal Drops): 2 drops in each nasal passage 3 times a day. Duration of the course — 5–7 days.

Enhanced Dosage (Nasal Drops): 3–4 drops in each nasal passage 4 times a day. Used for acute purulent rhinosinusitis, viral etiology with pronounced congestion.

Maximum Dosage (Nasal Drops): Up to 5 drops in each nasal passage up to 5 times a day. Permissible only under inpatient observation for acute forms of bacterial sinusitis.

Preventive Dosage (Nasal Drops): 1–2 drops in each nasal passage once a day for 7 days. Recommended for patients with seasonal allergic rhinitis, recurrent viral rhinitis in the cold season.

Pediatric Dosage (Nasal Drops): From 5 years of age: 1 drop in each nasal passage 2 times a day. Use is permissible only in diluted form (1:3 with boiled water or olive oil).

Contraindications (Nasal Drops): Acute nosebleeds, perforation of the nasal septum, individual intolerance to citrus fruits. Safety of use during pregnancy and lactation has not been established.

Side Effects (Nasal Drops): Burning, sneezing, increased congestion, irritation of the nasal mucosa.

Adjustment for Patient Body Weight: For body weight less than 40 kg — no more than 1 drop in each nostril. For weight above 90 kg, an increase up to 4 drops per intake is permissible.

Preparation Method (Nasal Drops): Lemon essential oil — 2 grams, refined coconut oil — 98 grams. The oils are thoroughly mixed at a temperature of 35–40 degrees until completely homogeneous. Poured into dropper bottles.

Storage Conditions and Shelf Life (Nasal Drops): Store in a dark glass container, at a temperature from +5 to +15 degrees Celsius. Avoid heating and direct sunlight. Shelf life — 3 months. After opening — use within 14 days.

Ear Drops — Citrus limon

Indications (Ear Drops): Acute external otitis, fungal lesion of the auditory canal, earwax plug, otomycosis, viral otitis.

Standard Dosage (Ear Drops): 2 drops in the affected ear 2 times a day. Course of treatment — 7 days.

Enhanced Dosage (Ear Drops): 3–4 drops 3 times a day. Used for pronounced inflammation of the auditory canal, otomycosis.

Maximum Dosage (Ear Drops): Up to 5 drops 3 times a day. Permissible for purulent forms of otitis under otolaryngologist supervision.

Preventive Dosage (Ear Drops): 1 drop in each ear once a day for 5 days after swimming in open water bodies or a pool. Suitable for the prevention of otomycosis and inflammation of the external ear.

Pediatric Dosage (Ear Drops): From 6 years of age: 1 drop 1–2 times a day. The oil must be diluted with a base oil (1:4 with coconut oil).

Contraindications (Ear Drops): Perforation of the tympanic membrane, eczema of the auditory canal, hypersensitivity. Use during pregnancy does not have sufficient clinical data.

Side Effects (Ear Drops): Burning in the ear, dizziness, feeling of fullness, temporary hearing deterioration.

Adjustment for Patient Body Weight: For patients with body weight up to 50 kg — the dosage should not exceed 2 drops per intake. For patients above 90 kg, a dosage of up to 4 drops is possible.

Preparation Method (Ear Drops): Lemon essential oil — 1 gram, coconut oil — 99 grams. The oils are mixed at a temperature of 40 degrees, kept for 24 hours in a glass container before use. The finished solution is filtered and poured into droppers.

Storage Conditions and Shelf Life (Ear Drops): Store in a dark glass container, at a temperature of 5–15 degrees Celsius. Protect from light and heat. Shelf life — 6 months. After opening — use within 10 days.

Essential Oil — Citrus limon

Indications (Essential Oil): Herpesvirus infection, seborrheic dermatitis, skin mycoses, viral warts, acne, gingivitis, bronchitis, chronic fatigue syndrome, anxiety disorder, hyperlipidemia.

Standard Dosage (Essential Oil): Topically — 2 drops per 5 ml of base oil, apply to the skin 2 times a day. In aroma lamps — 2–3 drops per 10 sq. m of room for 30 minutes.

Enhanced Dosage (Essential Oil): 4 drops per 5 ml of base oil, used for pronounced inflammatory skin diseases (acne, dermatitis, eczema), as an antiseptic treatment.

Maximum Dosage (Essential Oil): 5 drops per 5 ml of base oil, up to 3 times a day. Used for mycoses, herpes, furunculosis, strictly pointwise.

Preventive Dosage (Essential Oil): 1–2 drops in an aroma diffuser daily in the evening for 10 days. Suitable for chronic fatigue, decreased attention, emotional exhaustion.

Pediatric Dosage (Essential Oil): From 5 years of age: only in an aroma lamp, 1 drop per 10 sq. m for 15 minutes. Topical use is not recommended without dilution.

Contraindications (Essential Oil): Photodermatitis, allergy to citrus fruits, skin hypersensitivity, active inflammatory processes on the skin. Data on safety during pregnancy and breastfeeding are limited.

Side Effects (Essential Oil): Phototoxic reactions, skin hyperemia, peeling, allergic dermatitis.

Adjustment for Patient Body Weight: Not required for topical and inhalation use. For weight less than 40 kg, dosages are halved.

Preparation Method (Essential Oil): Fresh zest of ripe lemons is used. The method of obtaining is cold pressing. For 100 grams of essential oil, about 5 kilograms of fresh zest are required. The zest is ground, subjected to mechanical pressing with the separation of volatile fractions. The oil is filtered and stabilized for 48 hours in a dark room at 10 degrees Celsius.

Storage Conditions and Shelf Life (Essential Oil): Store in tightly closed dark glass vials at a temperature from +5 to +15 degrees Celsius. Avoid contact with air, light, and metal surfaces. Shelf life — up to 12 months. After opening, use within 60 days.

Lotion — Citrus limon

Indications (Lotion): Acne, oily seborrhea, hyperkeratosis, acne rash, enlarged pores, gingivitis (when irrigated), viral herpes (topical application), fungal skin lesions.

Standard Dosage (Lotion): Wipe the skin with a cotton swab soaked in lotion 2 times a day after washing. Course — 14 days.

Enhanced Dosage (Lotion): 3 times a day. Used for active inflammatory acne elements, oily seborrhea, infectious rashes.

Maximum Dosage (Lotion): Up to 4 times a day. Used short-term for acute bacterial skin inflammation.

Preventive Dosage (Lotion): Once a day at night for 7–10 days monthly. Suitable for patients with oily skin prone to inflammation.

Pediatric Dosage (Lotion): From 10 years of age: no more than once a day, use diluted (1:1 with boiled water).

Contraindications (Lotion): Damaged skin, individual intolerance, atopic dermatitis in the acute stage. Safety during pregnancy and lactation has not been established.

Side Effects (Lotion): Burning, peeling, hyperemia, allergic reactions.

Adjustment for Patient Body Weight: Dosage adjustment is not required. For weight less than 50 kg, an increase in the interval between applications is possible.

Preparation Method (Lotion): Lemon zest — 15 grams, water-alcohol solution (20% ethanol) — 80 ml, witch hazel hydrolate — 5 ml. The zest is infused in the water-alcohol base for 7 days at 20 degrees in the shade, then filtered, the hydrolate is added, mixed, and poured into vials.

Storage Conditions and Shelf Life (Lotion): Store in a dark glass package at a temperature from 5 to 15 degrees Celsius. Protect from direct light. Shelf life — 6 months. After opening — use within 30 days.

Cream — Citrus limon

Indications (Cream): Acne, seborrheic dermatitis, hyperpigmentation, viral herpes, foot mycosis, atopic dermatitis (in remission), skin aging.

Standard Dosage (Cream): Apply a thin layer to the affected area 2 times a day, morning and evening. Duration of the course — 14–21 days.

Enhanced Dosage (Cream): Apply 3 times a day for pronounced skin inflammation, hyperkeratosis, mycoses.

Maximum Dosage (Cream): Up to 4 applications per day, permissible for 3–5 days for herpetic infection or fungal lesion.

Preventive Dosage (Cream): Once a day at night. Recommended for oily and combination skin, as well as for a tendency to hyperpigmentation, couperose.

Pediatric Dosage (Cream): From 7 years of age: once a day in diluted form (1:1 with a neutral children's cream). Apply to a small skin area.

Contraindications (Cream): Open wounds, active eczema, individual intolerance, photosensitization. There are no data on the safety of use during pregnancy and lactation.

Side Effects (Cream): Skin irritation, burning sensation, peeling, phototoxic reactions.

Adjustment for Patient Body Weight: Correction is not required for topical use. For weight less than 50 kg, use with caution on small areas.

Preparation Method (Cream): Per 100 grams of cream: coconut oil — 40 grams, lemon hydrolate — 30 milliliters, beeswax — 15 grams, lemon essential oil — 1 gram, lecithin — 2 grams, jojoba oil — 12 grams. The fat phase is melted in a water bath (up to 55 degrees), the water phase is heated to the same temperature, combined, intensively stirred until an emulsion is formed. After cooling, the essential oil is added.

Storage Conditions and Shelf Life (Cream): Store in a tightly closed glass jar at a temperature from +5 to +15 degrees Celsius. Avoid sunlight and heat. Shelf life — 90 days. After opening, use within 30 days.

Ointment — Citrus limon

Indications (Ointment): Furunculosis, skin mycosis, herpes virus, inflammation of lymph nodes, calluses, skin cracks, bacterial dermatoses.

Standard Dosage (Ointment): Apply locally 2 times a day to the affected area. Course — 10–14 days.

Enhanced Dosage (Ointment): 3 times a day, for active inflammation, furunculosis, viral skin lesions.

Maximum Dosage (Ointment): Up to 4 times a day for exacerbation of viral dermatitis or trophic ulcers (in complex therapy).

Preventive Dosage (Ointment): Once a day before bedtime on the area of the feet, elbows, calluses. Use 7 days monthly.

Pediatric Dosage (Ointment): From 6 years of age: apply once a day on the area of intact skin for mycoses or irritation. A sensitivity test is mandatory.

Contraindications (Ointment): Individual intolerance, eczema in the weeping stage, active ulcerative skin lesions. Safety of use during pregnancy and lactation has not been established.

Side Effects (Ointment): Skin irritation, peeling, contact dermatitis, increased sensitivity to ultraviolet light.

Adjustment for Patient Body Weight: For weight less than 50 kg — a decrease in the application area. For weight above 85 kg, an expansion of the treatment zone is possible.

Preparation Method (Ointment): Coconut oil — 40 grams, beeswax — 20 grams, dry lemon extract — 10 grams.

Storage Conditions and Shelf Life (Ointment): Store in a tightly closed dark glass jar, at a temperature from 5 to 10 degrees. Shelf life — 6 months. After opening, use within 30 days.

Serum — Citrus limon

Indications (Serum): Hyperpigmentation, acne, enlarged pores, age-related skin changes, dull complexion, inflammatory skin elements, oily seborrhea.

Standard Dosage (Serum): Apply 2–3 drops to cleansed facial skin once a day before bedtime. Course — 21 days.

Enhanced Dosage (Serum): 2 times a day, 3–4 drops. Used for pronounced pigmentation, acne, post-acne.

Maximum Dosage (Serum): Up to 5 drops 3 times a day, only for local application and short courses of no more than 5 days. Used for age-related hyperpigmentation and oily seborrhea.

Preventive Dosage (Serum): 1–2 drops once a day every other day. Recommended for patients with combination skin prone to inflammation and excessive skin sebum. Use 10 days per month.

Pediatric Dosage (Serum): From 10 years of age: 1 drop once a day, diluted in cream (1:2). Only for pointwise application to the T-zone and post-acne.

Contraindications (Serum): Active inflammatory skin processes, individual intolerance, photosensitivity. Data on safety during pregnancy and breastfeeding are absent.

Side Effects (Serum): Phototoxicity, irritation, peeling, erythema.

Adjustment for Patient Body Weight: Dosage adjustment is not required. Consider the application area and the patient's skin sensitivity.

Preparation Method (Serum): Lemon hydrolate — 50 ml, vegetable glycerin — 10 ml, dry lemon extract — 3 grams, lemon essential oil — 0.5 grams, xanthan gum — 0.5 grams, aloe vera gel — 35 ml. The components are mixed in a sterile container, gelled at a temperature not exceeding 30 degrees Celsius, infused for 24 hours.

Storage Conditions and Shelf Life (Serum): Store in a dark, cool place, temperature — from +5 to +10 degrees Celsius. Shelf life — 2 months. After opening, use within 21 days, avoiding contact with fingers.

Mud Mask — Citrus limon

Indications (Mud Mask): Acne, comedones, enlarged pores, hyperkeratosis, seborrheic dermatitis, dull complexion, tissue edema, inflammatory skin elements.

Standard Dosage (Mud Mask): Apply 5–7 grams of the mask to the face once every 3 days for 15 minutes. Rinse with warm water. Course — 5–7 procedures.

Enhanced Dosage (Mud Mask): Every other day for a week for active acne and inflammations. Permissible for oily seborrhea and enlarged pores.

Maximum Dosage (Mud Mask): Once a day for 3 days for purulent rashes and inflammatory foci. After — transition to the standard regimen.

Preventive Dosage (Mud Mask): Once a week. Suitable for patients with combination skin prone to pollution and inflammation.

Pediatric Dosage (Mud Mask): From 12 years of age: 3–5 grams on the face once a week, for mild acne. Permitted in the absence of allergy to citrus fruits.

Contraindications (Mud Mask): Damaged skin, sensitive skin, active dermatitis. Safety during pregnancy has not been established.

Side Effects (Mud Mask): Burning, irritation, feeling of skin tightness, peeling.

Adjustment for Patient Body Weight: Not required. Correction is carried out depending on the application area and individual skin sensitivity.

Preparation Method (Mud Mask): Green clay — 50 grams, lemon hydrolate — 30 ml, dry lemon extract — 5 grams, lemon essential oil — 0.5 grams, coconut oil — 10 grams, aloe vera gel — 5 grams. The clay is mixed with hydrolate and extract to a pasty consistency, then the essential oil and coconut oil are introduced, mixed until homogeneous.

Storage Conditions and Shelf Life (Mud Mask): Store in a tightly closed jar at a temperature from +5 to +10 degrees Celsius. Shelf life — 30 days. After opening — use within 10 days. Avoid contact with moisture.

Toxicity and Biosafety of Citrus limon

Citrus limon belongs to the category of pharmacologically safe taxa for oral and topical use in therapeutic dosages. Studies of acute toxic effects have shown that the main object of toxicity assessment is the essential oil and lemon peel extracts containing a high concentration of D-limonene and citral.

The acute oral LD50 (lethal dose for 50% of experimental animals) for lemon essential oil when administered to mice is approximately 4,400 mg/kg of body weight. This indicates moderate toxicity when ingested in high doses, which significantly exceeds therapeutic dosages.

With topical application, lemon oil exhibits low toxicity; however, it can cause phototoxic reactions under exposure to solar radiation (especially in pure form or at high concentration in cosmetics). Aqueous-alcohol and dry extracts do not exhibit pronounced toxicity with standard use.

No carcinogenic, mutagenic, or teratogenic action has been registered when using Citrus limon in physiological doses. Limonene metabolites do not have a cumulative effect with short-term use.

Studies of chronic toxicity and effects on the reproductive system are in the process of being supplemented. The safety of use in pregnant, lactating women, and young children has not been confirmed by long-term studies and requires caution.

Reference: https://pubchem.ncbi.nlm.nih.g...

Pharmacodynamics — Citrus limon

The pharmacodynamic properties of Citrus limon are due to a complex of biologically active substances, including monoterpenes (limonene, γ-terpinene), flavonoids (hesperidin, diosmin, eriocitrin), phenolic acids, ascorbic acid, pectins, and volatile essential components. These substances provide systemic and local effects on various physiological and biochemical targets in the human body.

The antioxidant effect of lemon is associated primarily with the high content of ascorbic acid and flavonoids, capable of inhibiting reactive oxygen and nitrogen species, stabilizing cell membranes, and preventing oxidative modification of lipids and proteins. This action affects mainly the vascular, immune, and skin systems, contributing to a decrease in peroxide stress and regulation of inflammatory cascades.

The modulating effect on the immune system is due to the presence of polyphenolic structures that activate phagocytosis, enhance the production of interleukins, and regulate the activity of NK cells. Some terpenoids also mediate interaction with immune cell receptors, including TLR (Toll-like receptors), enhancing innate defense mechanisms.

The antimicrobial and antiviral properties of Citrus limon have been confirmed by numerous in vitro studies. Essential oils and peel extracts affect the lipid membranes of microorganisms, causing their destabilization and destruction. Volatile components are able to disrupt the synthesis of bacterial proteins and inhibit the replication of RNA viruses. At the level of the skin and mucous membranes, these actions provide local disinfection and a decrease in the colonization of pathogenic microflora.

On the gastrointestinal tract, lemon has a local regulatory effect due to organic acids, flavonoids, and bitters that stimulate the secretion of digestive juices, improve motility, and microbial balance. Citrus bioflavonoids also affect the tone of the intestinal smooth muscles.

Vascular effects are expressed in the normalization of capillary permeability, an increase in the elasticity of the vascular wall, and modulation of venous system tone. This effect is realized through antioxidant and flavonoid components that affect the activity of metalloproteinase enzymes and the production of nitric oxide.

Volatile essential compounds of lemon demonstrate moderate sedative and anxiolytic activity with inhalation use, which is associated with an effect on olfactory receptors and a subsequent effect on the limbic system and hypothalamic-pituitary regulation.

Finally, the anti-inflammatory effects of lemon are due to the suppression of inflammatory mediators, including prostaglandins, cytokines, and reactive oxygen species, as well as the modulation of cyclooxygenase and lipoxygenase activity in target cells. This ensures its importance in the therapy of inflammatory conditions at the systemic and skin levels.

References:
https://pubmed.ncbi.nlm.nih.go...
https://www.sciencedirect.com/...
https://www.tandfonline.com/do...
https://link.springer.com/arti...

Pharmacokinetics — Citrus limon

The pharmacokinetics of Citrus limon generally depends on the form of application and the predominant composition of active components. With oral intake of powders, extracts, or infusions, the absorption of organic acids, vitamins, and flavonoids occurs in the upper parts of the gastrointestinal tract. The absorption of citric acid is carried out by passive diffusion, while flavonoids such as hesperidin and eriocitrin require preliminary metabolism by intestinal microflora to aglycones, which affects their rate and degree of absorption.

Monoterpenes and essential oils of Citrus limon exhibit lipophilic properties and easily penetrate through the skin and mucous membranes with transdermal or inhalation routes of administration. They quickly enter the systemic bloodstream and are distributed mainly in adipose tissue, skin, liver, and lungs. These compounds are characterized by high permeability through cell membranes and are able to reach the central nervous system.

The metabolism of the active components of lemon occurs mainly in the liver with the participation of cytochrome P450 enzymes. The main metabolic pathways include oxidation, dehydration, and conjugation with glucuronic or sulfuric acids. The resulting metabolites are excreted mainly in urine and to a lesser extent with bile. For volatile components, a partial elimination route is the lungs.

Polyphenols and pectins are poorly absorbed unchanged; however, they have local effects in the intestinal lumen, including binding of toxins and regulation of microflora. They are mainly eliminated through the intestine in the form of complexes with bile acids or undergo microbial decomposition.

Ascorbic acid is well absorbed and transported in free form in the aqueous media of the body; it is excreted mainly by the kidneys, while excess doses do not accumulate, which reduces the risk of toxic effects with moderate use.

The transdermal route, characteristic of ointments, creams, and lotions based on Citrus limon, provides a mainly local effect with limited systemic absorption, especially when using hydrophobic bases (for example, coconut oil). However, prolonged use of highly concentrated essential forms can lead to cumulation in the skin and subcutaneous adipose tissue.

References:
https://www.sciencedirect.com/...
https://pubmed.ncbi.nlm.nih.go...
https://onlinelibrary.wiley.co...
https://www.ncbi.nlm.nih.gov/p...

Mechanisms of Action and Scientific Rationale — Citrus limon

The mechanisms of action of Citrus limon are based on the synergistic activity of a complex of natural compounds, among which monoterpenes (including D-limonene and γ-terpinene), flavonoids (hesperidin, eriocitrin), phenolic acids, and vitamin C dominate. These compounds modulate the activity of enzymes, signaling cascades, and cellular mediators, which leads to multi-profile physiological effects.

Monoterpenes, such as limonene, have an effect on cytochrome P450 systems and possess inhibitory activity against CYP2B and CYP1A enzymes. This contributes to a decrease in the biotransformation of xenobiotics, participating in the regulation of the metabolism of active and toxic compounds. In cell models, suppression of the expression of the NF-κB cascade has been demonstrated, which reduces the synthesis of pro-inflammatory cytokines (TNF-α, IL-1β) and prostaglandins due to the suppression of COX-2.

Lemon flavonoids, especially hesperidin and eriocitrin, regulate the activity of vascular endothelium by activating eNOS and increasing the production of nitric oxide (NO), which leads to vasodilation and normalization of capillary permeability. In addition, they stabilize mast cell membranes, preventing degranulation and the release of allergy mediators, including histamine and tryptase. This demonstrates a modulating effect on immune and inflammatory reactivity.

Ascorbic acid plays a key role in antioxidant protection, acting as a reducing agent for free radicals and maintaining the activity of glutathione-dependent enzyme systems. In addition, it regulates the activity of metalloproteinases (MMP-2, MMP-9), which has a stabilizing effect on connective tissue and inhibits the processes of extracellular matrix degradation.

Lemon essential oils have a pronounced effect on the lipid membranes of microorganisms, causing a violation of their integrity and lysis. Studies confirm the inhibition of bacterial phospholipase and suppression of the synthesis of pathogen proteins. In addition, terpenoids are able to disrupt the assembly of viral envelopes, inhibiting viral replication.

From the point of view of neuromodulation, limonene and its metabolites exhibit affinity for GABA receptors and serotonin receptors (5-HT1A), which substantiates the moderate anxiolytic properties of volatile fractions. With the inhalation route of administration, they interact with the olfactory bulb, forming descending effects on the limbic system and hypothalamus.

The effects of lemon flavonoids on the inhibition of α-glucosidase and α-amylase have also been demonstrated, which confirms their influence on the enzymatic activity of the digestive tract. This contributes to a decrease in postprandial glucose and a slowdown in the absorption of carbohydrates in the small intestine.

References:
https://pubmed.ncbi.nlm.nih.go...
https://www.sciencedirect.com/...
https://www.tandfonline.com/do...
https://www.ncbi.nlm.nih.gov/p...

Synergy — Citrus limon

The synergistic interactions of Citrus limon with other biologically active substances and plant taxa are due to the polycomponent composition, primarily flavonoids, organic acids, and essential oils. In vitro and in vivo studies indicate a potentiating and additive interaction with plants possessing a similar antioxidant and anti-inflammatory orientation.

The combined use of lemon with plants rich in polyphenols (for example, Camellia sinensis and Rosmarinus officinalis) enhances the neutralization of reactive oxygen species due to the regeneration of antioxidant components. The combination with vitamins E and A has a protective effect on the lipid structures of membranes, stabilizing peroxide oxidation.

Lemon essential oils in combination with lavender (Lavandula angustifolia) and tea tree (Melaleuca alternifolia) oils demonstrate an enhancement of antimicrobial action due to the overlapping mechanism of destruction of bacterial cell envelopes and inactivation of pathogen enzyme systems. These interactions are additive and potentiating in nature.

The flavonoid fractions of lemon in combination with rutin, quercetin, and diosmin exhibit pronounced synergy with respect to the vascular wall and capillaries. Such combinations normalize vascular permeability, suppress NF-κB expression, and reduce the production of pro-inflammatory mediators, including IL-6 and TNF-α. Such interaction can be classified as tissue-specific and modulating.

When combined with prebiotics (inulin, galactooligosaccharides), lemon flavonoids demonstrate an improvement in intestinal absorption and bioavailability, due to the enzymatic transformation of glycosidic bonds by microflora. Thus, conditions are created for the mutual enhancement of pharmacological effects within the framework of a synergistic composition.

At the level of neuropsychotropic activity, the essential components of lemon in combination with citronella or orange oils potentiate anxiolytic effects mediated through olfactory pathways and influence on the hypothalamic-limbic system. This is confirmed by data on the activation of parasympathetic regulation when using compositions in aromacosmetology.

References:
https://pubmed.ncbi.nlm.nih.gov/31903472
https://www.sciencedirect.com/science/article/pii/S0278691521002285
https://www.tandfonline.com/do...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8193383/

Geography of Use and Traditional Medicine — Citrus limon

In Islamic medicine, lemon was traditionally used in the form of aqueous and vinegar infusions to refresh the body, eliminate heat and "moist imbalances." In the Arab tradition, lemon juice was considered food and medicine, and was also used in ritual cleansing of the body before prayer. Egyptian Copts used lemon to aromatize rooms and protect against "bad vapors," spreading the peel and leaves in living spaces.

In Indian Ayurvedic practice, lemon was used fresh and as a component of oil infusions. It was considered an element of the cooling principle "sattva" and was often used in purification rituals (panchakarma), oil massages (abhyanga), as well as a neutralizing element when mixing potent substances. In South Indian and Sinhalese village traditions, lemon was hung over the entrance as protection from the evil eye and diseases.

In traditional Chinese medicine, lemon was not part of the basic canonical pharmacopoeia, but its components began to be used in recipes of Southeast China and Yunnan folk medicine as an aromatic and "cooling" remedy.

In Vietnam and Laos, fresh lemon juice was added to mixtures with salt and ginger for rubs, and was considered a plant capable of "removing hot wind."

In Thai folk medicine (Moeng and Lanna tradition), lemon is used in the form of fresh juice, as part of cleansing balms, inhalation balls, alcohol tinctures with bitter roots. Lemon leaves and peel are included in steam inhalations (samung prai) for cleansing the respiratory tract. It is part of ceremonial mixtures for aromatizing rooms, used in infant bathing and ritual cleansings.

In Latin America, lemon is actively used in Mexican, Peruvian, and Brazilian folk healing. The indigenous peoples of the Amazon use lemon peel in decoctions for ablutions, considering it a plant capable of cleansing from "evil spirits" and energy blocks. Lemon is also symbolically associated with purification and clarity of mind in the spiritual practices of Umbanda and Santeria.

In the post-Soviet space, lemon is widely used in Slavic folk healing. In Belarus and southern Russia, it was added to honey infusions and steam inhalations; in Ukrainian village practice, it was used as a component of a "refreshing wreath" for cleansing bath rituals. Lemon peel was added to dry mixtures that were burned on coals to protect the home.

In folklore, lemon was often considered a plant capable of dispersing mental darkness, clarifying thoughts, and balancing the emotional background. In magical-religious rites, lemon was used as a "plant of light," used in divination practices, amulets, and purification ceremonies both in the East and in the European tradition (especially in medieval Italy and Greece).