​Linum (Common Flax) / Linum Seeds (Powder)

Linum (Common Flax)

Product Name: Лён, Linum, Flachs, Lino, Lin, الكتان, ปอป่าน, Zig'ir, Зыгыр, Kətan, Зирак, Linas, Linsēklas, Льон, פשתן

Synonyms: лён посевной, flax, common flax, Flachspflanze, lin cultivé, lino común, كتان شائع, ปอป่านทั่วไป

Parts Used: seeds, leaves, stems, roots, flowers, mucilage.

Main Indications for Use of Flax (Linum usitatissimum): Hypercholesterolemia, atherosclerosis, arterial hypertension, type 2 diabetes mellitus, metabolic syndrome, chronic constipation, irritable bowel syndrome, ulcerative colitis, gastritis with increased acidity, obesity, breast cancer, prostate cancer, benign prostatic hyperplasia, climacteric syndrome, osteoporosis, inflammatory skin diseases.

Use of Flax (Linum usitatissimum) in mixtures and complexes: Hypothyroidism, chronic cholecystitis, chronic pancreatitis, intestinal dysbiosis, viral hepatitis, autoimmune thyroiditis, inflammatory diseases of the pelvic organs, hemorrhoids, urolithiasis.

Pharmacological Properties of Flax (Linum usitatissimum): antioxidant, hypolipidemic, hypoglycemic, anti-inflammatory, antiestrogenic, oncoprotective, cardioprotective, laxative, enveloping, regenerative, immunomodulatory, analgesic, antiseptic, spasmolytic, antibacterial, fungistatic, prebiotic, gastroprotective.

Dosage of Pharmaceutical Forms — Flax (Linum usitatissimum)

Powder — Flax (Linum usitatissimum)

Indications (Powder): Hypercholesterolemia, chronic constipation, ulcerative colitis, irritable bowel syndrome, gastritis with increased acidity, obesity, type 2 diabetes mellitus, benign prostatic hyperplasia.

Standard Dosage (Powder): 5 grams of powder 2 times a day, 20 minutes before meals, with warm water.

Enhanced Dosage (Powder): 10 grams 2 times a day for obesity, type 2 diabetes mellitus, hypercholesterolemia, ulcerative colitis.

Maximum Dosage (Powder): Up to 15 grams 2 times a day for metabolic syndrome and pronounced lipid metabolism disorders. Maximum course no more than 4 weeks.

Preventive Dosage (Powder): 3 grams once a day in the morning on an empty stomach. Prevention of chronic constipation, hypercholesterolemia, prediabetes. Courses of 14 days with a break of 7 days.

Pediatric Dosage (Powder): From 7 years of age with body weight from 25 kg — 1 gram 2 times a day, from 12 years of age — 2 grams 2 times a day.

Contraindications (Powder): Acute intestinal obstruction, intestinal adhesions, acute pancreatitis. Data on contraindications during pregnancy, lactation, and in children under 7 years of age have not been scientifically registered.

Side Effects (Powder): With overdose, bloating, flatulence, diarrhea are possible.

Adjustment for Patient Body Weight: For body weight less than 60 kg — reduce the dosage by 25%. For body weight more than 90 kg — increase the dosage by 20%.

Preparation Method (Powder): 100 grams of mature flax seeds are washed, dried at a temperature of 40 °C until completely dry. Ground into a powder using a mill to a homogeneous flour. Store in an airtight glass container.

Storage Conditions and Shelf Life (Powder): Store in a tightly closed dark glass container at a temperature not exceeding 25 °C, in a dry place protected from direct light and electromagnetic radiation. Shelf life up to 6 months. After opening, use within 30 days.

Dry Extract — Flax (Linum usitatissimum)

Indications (Dry Extract): Hypercholesterolemia, type 2 diabetes mellitus, climacteric syndrome, osteoporosis, breast cancer, prostate cancer, inflammatory bowel diseases.

Standard Dosage (Dry Extract): 300 mg 2 times a day, with meals.

Enhanced Dosage (Dry Extract): 500 mg 2 times a day for climacteric syndrome, oncological diseases, pronounced osteoporosis.

Maximum Dosage (Dry Extract): 750 mg 2 times a day for no more than 4 weeks, for confirmed prostatic hyperplasia and metabolic syndrome.

Preventive Dosage (Dry Extract): 150 mg once a day for premenopausal changes in women, prevention of hypercholesterolemia and type 2 diabetes mellitus. Courses of 3 weeks with a break of 10 days.

Pediatric Dosage (Dry Extract): From 12 years of age with body weight from 35 kg — 100 mg 2 times a day.

Contraindications (Dry Extract): Hormone-dependent tumors (in the absence of control), acute inflammatory processes of the gastrointestinal tract. Data on contraindications during pregnancy, lactation, and in children under 12 years of age have not been scientifically registered.

Side Effects (Dry Extract): Rarely — nausea, flatulence, allergic reactions to components.

Adjustment for Patient Body Weight: Less than 60 kg — reduce the dosage by 20%. More than 90 kg — increase the dose by 25%.

Preparation Method (Dry Extract): 100 grams of flax seeds are ground, extracted with 70% ethanol in a ratio of 1:10 at a temperature of 40 °C for 24 hours. The solution is filtered, ethanol is evaporated at a temperature of 45 °C, the resulting mass is dried to a powder state in a drying chamber at 40 °C. The resulting dry extract is sieved and packaged.

Storage Conditions and Shelf Life (Dry Extract): Store in an airtight package made of light-proof material at a temperature of 15–25 °C, in a dry place, away from EMI sources. Shelf life — 2 years. After opening, use within 45 days.

Alcohol Tincture — Flax (Linum usitatissimum)

Indications (Alcohol Tincture): Hypercholesterolemia, atherosclerosis, metabolic syndrome, benign prostatic hyperplasia, climacteric syndrome, osteoporosis, inflammatory bowel diseases.

Standard Dosage (Alcohol Tincture): 20 drops (approximately 1 ml) 2 times a day, diluted in 50 ml of warm water, 30 minutes before meals.

Enhanced Dosage (Alcohol Tincture): 30 drops 2 times a day for climacteric syndrome, pronounced metabolic syndrome, hyperlipidemia.

Maximum Dosage (Alcohol Tincture): Up to 40 drops 2 times a day for no more than 10 days consecutively for severe hypercholesterolemia and benign prostatic hyperplasia.

Preventive Dosage (Alcohol Tincture): 10 drops once a day in the morning, in courses of 14 days, with breaks of 14 days, for the prevention of age-related hormone-dependent disorders in men and women.

Pediatric Dosage (Alcohol Tincture): Not recommended for children under 14 years of age due to ethanol content. In case of extreme necessity — from 14 years of age, 5 drops once a day.

Contraindications (Alcohol Tincture): Alcoholism, epilepsy, active liver diseases, pregnancy, lactation, childhood under 14 years of age.

Side Effects (Alcohol Tincture): Nausea, dizziness, irritation of the gastric mucosa when the dosage is exceeded, are possible.

Adjustment for Patient Body Weight: For body weight up to 60 kg — 75% of the recommended dose. Above 90 kg — an increase of the dose by 20% is permissible.

Preparation Method (Alcohol Tincture): 100 grams of ground flax seeds are poured with 500 ml of 70% ethyl alcohol. Infuse in an airtight glass container for 14 days at a temperature of 20–25 °C in a dark place. Shake periodically. At the end, strain through gauze. Package in dark glass vials.

Storage Conditions and Shelf Life (Alcohol Tincture): Store in a tightly closed dark glass container at a temperature from 15 to 25 °C, in a place protected from light and EMI. Shelf life — up to 2 years. After opening, use within 60 days.

Oil Infusion — Flax (Linum usitatissimum)

Indications (Oil Infusion): Inflammatory skin diseases, dry skin, eczema, trophic ulcers, burns, prevention of chronic constipation, age-related hormonal disorders.

Standard Dosage (Oil Infusion): 10 ml once a day for 14 days (oral). Topically — apply to affected skin areas 2 times a day.

Enhanced Dosage (Oil Infusion): 15 ml 2 times a day for pronounced dry skin, dermatitis, and age-related hormonal disorders.

Maximum Dosage (Oil Infusion): Up to 30 ml per day (no more than 7 days consecutively).

Preventive Dosage (Oil Infusion): 5 ml once a day in the morning before breakfast. Prevention of chronic constipation, dermatitis, and age-related hormonal disorders. Courses of 21 days, repeat every 2 months.

Pediatric Dosage (Oil Infusion): From 6 years of age — 2 ml per day, from 12 years of age — 5 ml once a day. Only in the absence of liver diseases.

Contraindications (Oil Infusion): Acute cholecystitis, acute pancreatitis, diarrheal syndrome. Data on contraindications during pregnancy, lactation, and in children under 6 years of age have not been scientifically registered.

Side Effects (Oil Infusion): May cause nausea, stool disorders, allergic reactions to components.

Adjustment for Patient Body Weight: Body weight less than 60 kg — 70% of the dose, body weight more than 90 kg — an increase of the dose by 15% is permissible.

Preparation Method (Oil Infusion): 100 grams of flax seed are ground, poured with 400 ml of first cold-pressed coconut oil. Infuse in a water bath at a temperature of 40 °C for 4 hours. Strain through gauze, squeeze out the residues. Cool to room temperature and pour into glass containers.

Storage Conditions and Shelf Life (Oil Infusion): Store in a dark glass container at a temperature of 10–25 °C, in a dry place protected from light and electromagnetic radiation. Shelf life — 6 months. After opening, use within 30 days.

Vaginal Suppository — Flax (Linum usitatissimum)

Indications (Vaginal Suppository): Atrophic vaginitis, bacterial vaginosis, candidal vulvovaginitis, vaginal dryness in postmenopause, benign endometrial hyperplasia.

Standard Dosage (Vaginal Suppository): 1 suppository at night, course of 10 days.

Enhanced Dosage (Vaginal Suppository): 1 suppository 2 times a day (morning and evening) for pronounced inflammatory process and atrophic vaginitis.

Maximum Dosage (Vaginal Suppository): Up to 3 suppositories per day for pronounced bacterial vaginosis, only as prescribed by a specialist, no more than 5 days consecutively.

Preventive Dosage (Vaginal Suppository): 1 suppository every other day at night. Used for the prevention of vaginal dryness and inflammatory processes in menopausal women. Courses of 14 days every 3 months.

Pediatric Dosage (Vaginal Suppository): Not recommended under 18 years of age.

Contraindications (Vaginal Suppository): Presence of acute purulent infections of the genital organs, pregnancy up to 38 weeks. Data on contraindications during lactation have not been scientifically registered.

Side Effects (Vaginal Suppository): Local burning, mucosal irritation in case of individual sensitivity.

Adjustment for Patient Body Weight: Dosage adjustment is not required.

Preparation Method (Vaginal Suppository): To prepare 100 grams: dry flax extract — 10 grams, coconut oil — 70 grams, beeswax — 20 grams. Melt the wax and oil in a water bath, add the extract, mix thoroughly until homogeneous. Pour into suppository molds at a temperature of 40 °C. Cool until completely solidified.

Storage Conditions and Shelf Life (Vaginal Suppository): Store in a refrigerator at a temperature from 2 to 8 °C, in a light-proof package. Protect from heat and sunlight. Shelf life — up to 12 months. After opening the package, use within 10 days.

Nasal Drops — Flax (Linum usitatissimum)

Indications (Nasal Drops): Atrophic rhinitis, vasomotor rhinitis, chronic rhinosinusitis, dryness of the nasal mucosa, recovery after surgical interventions in the nasal cavity.

Standard Dosage (Nasal Drops): 1–2 drops in each nostril 2 times a day.

Enhanced Dosage (Nasal Drops): 3 drops in each nostril 3 times a day for pronounced dryness and recovery after surgical interventions.

Maximum Dosage (Nasal Drops): Up to 4 drops in each nostril 4 times a day for 3 days for severe forms of vasomotor rhinitis.

Preventive Dosage (Nasal Drops): 1 drop in each nostril once a day in the morning for chronic rhinitis, in winter, when staying in rooms with dry air. Courses of 10–14 days.

Pediatric Dosage (Nasal Drops): From 5 years of age — 1 drop in each nostril once a day.

Contraindications (Nasal Drops): Acute purulent sinusitis, allergic reaction to components. Data on contraindications during pregnancy, lactation, and in children under 5 years of age have not been scientifically registered.

Side Effects (Nasal Drops): Tingling sensation in the nose, increased sneezing.

Adjustment for Patient Body Weight: Not required.

Preparation Method (Nasal Drops): For 100 ml: oil infusion of flax seeds — 90 ml, coconut oil — 10 ml. Mix the components at a temperature of 35 °C, filter, package into dark glass droppers.

Storage Conditions and Shelf Life (Nasal Drops): Store at a temperature of 8–15 °C, in a dark place, away from EMI sources. After opening, use within 21 days. Total shelf life — up to 6 months.

Ear Drops — Flax (Linum usitatissimum)

Indications (Ear Drops): Earwax plugs, dryness of the external auditory canal, inflammatory diseases of the external ear, recovery after ear hygiene procedures.

Standard Dosage (Ear Drops): 3 drops in each ear 2 times a day for 5–7 days.

Enhanced Dosage (Ear Drops): Up to 6 drops 3 times a day for an earwax plug (for 2–3 days before washing).

Preventive Dosage (Ear Drops): 2 drops in each ear once every 3 days for the prevention of dryness and inflammations of the external ear, especially in hearing aid users.

Pediatric Dosage (Ear Drops): From 3 years of age — 1 drop once a day for 3–5 days.

Contraindications (Ear Drops): Perforation of the tympanic membrane, purulent discharge from the ear. Data on contraindications during pregnancy and lactation have not been scientifically registered.

Side Effects (Ear Drops): Feeling of congestion, temporary hearing decrease with excess oil.

Adjustment for Patient Body Weight: Not required.

Preparation Method (Ear Drops): For 100 ml: oil infusion of flax seeds — 80 ml, coconut oil — 20 ml. Combine the components at a temperature of 35–40 °C, mix, package into sterile dropper vials.

Storage Conditions and Shelf Life (Ear Drops): Store at a temperature from 8 to 15 °C, in a dark place, in an airtight package. Shelf life — 6 months. After opening — use within 14 days.

Ointment — Flax (Linum usitatissimum)

Indications (Ointment): Eczema, psoriasis, atopic dermatitis, 1st–2nd degree burns, skin cracks, trophic ulcers, dry skin, allergic dermatoses.

Standard Dosage (Ointment): Apply a thin layer 2 times a day to the cleansed affected surface.

Enhanced Dosage (Ointment): Apply 3 times a day for pronounced peeling, itching, and skin cracks.

Maximum Dosage (Ointment): Up to 5 times a day for extensive areas of trophic skin disorders (no more than 7 days consecutively).

Preventive Dosage (Ointment): Once a day before bedtime on dry skin areas. Used for chronic dry skin and a tendency to allergies. Courses of 14 days.

Pediatric Dosage (Ointment): From 1 year of age — once a day on limited areas. From 6 years of age — 2 times a day.

Contraindications (Ointment): Purulent skin lesions, individual sensitivity to components. Data on contraindications during pregnancy and lactation have not been scientifically registered.

Side Effects (Ointment): Rarely — itching, redness, skin burning.

Adjustment for Patient Body Weight: Not required.

Preparation Method (Ointment): For 100 grams: flax oil infusion — 50 grams, coconut oil — 30 grams, beeswax — 20 grams. Combine all components in a water bath at 40 °C, mix thoroughly, cool until thickened, package.

Storage Conditions and Shelf Life (Ointment): Store in a tightly closed dark glass container at a temperature from 5 to 15 °C. Shelf life — 9 months. After opening, use within 21 days.

Cream — Flax (Linum usitatissimum)

Indications (Cream): Age-related skin dryness, initial forms of eczema, post-inflammatory hyperpigmentation, couperose, seborrheic dermatitis.

Standard Dosage (Cream): Apply to the skin of the face or body 2 times a day, morning and evening.

Enhanced Dosage (Cream): Up to 3–4 times a day for pronounced dryness and irritation.

Maximum Dosage (Cream): Up to 5 applications per day on local skin areas for seborrheic and atopic reactions.

Preventive Dosage (Cream): Once a day at night. Used for sensitive skin in postmenopausal women, in dry climates or during the heating season. Courses of 21 days.

Pediatric Dosage (Cream): From 2 years of age — once a day, locally. From 7 years of age — 2 times a day if necessary.

Contraindications (Cream): Acute purulent dermatoses. Data on contraindications during pregnancy and lactation have not been scientifically registered.

Side Effects (Cream): Sometimes — slight burning, short-term redness.

Adjustment for Patient Body Weight: Not required.

Preparation Method (Cream): For 100 grams: flax oil infusion — 30 grams, coconut oil — 25 grams, purified water — 30 grams, plant-derived emulsifier (cetearyl glucoside) — 10 grams, sorbic acid-based preservative — 0.5 grams, chamomile extract — 4.5 grams. Heat the water and oil phases to 65 °C, combine with stirring, cool, package.

Storage Conditions and Shelf Life (Cream): Store at a temperature from 5 to 15 °C, in a dark airtight package protected from EMI. Shelf life — up to 6 months. After opening — 30 days.

Emulgel — Flax (Linum usitatissimum)

Indications (Emulgel): Diabetic angiopathy of the lower extremities, varicose trophic ulcer, eczema, contact dermatitis, skin microtraumas, 1st degree burns.

Standard Dosage (Emulgel): Apply a thin layer to the affected area 2 times a day.

Enhanced Dosage (Emulgel): Up to 3 times a day for pronounced tissue trophism disorders and inflammatory reactions.

Maximum Dosage (Emulgel): Up to 4 applications per day on limited areas for severe eczema and diabetic ulcers (no more than 7 days consecutively).

Preventive Dosage (Emulgel): Once a day in the evening on sensitive skin areas. Used in patients with chronic venous insufficiency, dermatitis, diabetes mellitus. Courses of 10 days with a break of 14 days.

Pediatric Dosage (Emulgel): From 3 years of age — once a day, locally, on intact skin. From 7 years of age — up to 2 times a day.

Contraindications (Emulgel): Acute purulent skin lesions, individual intolerance to components. Data on contraindications during pregnancy and lactation have not been scientifically registered.

Side Effects (Emulgel): Rarely — itching, slight redness, feeling of skin tightness.

Adjustment for Patient Body Weight: Correction is not required.

Preparation Method (Emulgel): For 100 grams: flax seed oil infusion — 25 grams, dry flax extract — 5 grams, carbopol-based gelling base — 1 gram, purified water — 59 grams, coconut oil — 5 grams, glycerin — 5 grams. Dissolve the gelling base in water, combine with glycerin and emulsify with the oil phase. Stir until homogeneous. Cool and package.

Storage Conditions and Shelf Life (Emulgel): Store in a dark airtight package at a temperature of 4–15 °C, away from sunlight and EMI sources. Shelf life — 6 months. After opening — 21 days.

Serum — Flax (Linum usitatissimum)

Indications (Serum): Dryness of facial skin, decreased turgor, fine wrinkles, skin irritation after peels and insolation, couperose, sensitive skin.

Standard Dosage (Serum): Apply 1–2 drops to cleansed facial skin 2 times a day — morning and evening.

Enhanced Dosage (Serum): 3–4 drops 2 times a day for pronounced dryness, peeling, and irritation.

Maximum Dosage (Serum): Up to 5 drops 3 times a day for 3–5 days for acute reactions to dryness and epidermal damage.

Preventive Dosage (Serum): 1–2 drops once a day at night. Used for chronic dry skin, age-related changes. Courses of 21 days with a break of 7 days.

Pediatric Dosage (Serum): From 12 years of age — only according to indications, no more than 1 drop once a day.

Contraindications (Serum): Individual intolerance, pustular rashes on the skin.

Side Effects (Serum): Sometimes — slight redness, tingling.

Adjustment for Patient Body Weight: Not required.

Preparation Method (Serum): For 100 ml: flax oil infusion — 10 ml, dry flax extract — 1 gram, hyaluronic acid (0.1%) — 5 ml, rose hydrolate — 80 ml, glycerin — 3 ml, potassium sorbate — 0.5 ml, coconut oil — 0.5 ml. Combine the components in the emulsion phase, mix thoroughly and package.

Storage Conditions and Shelf Life (Serum): Store in a refrigerator at a temperature from 4 to 8 °C in a glass container with a dispenser. Shelf life — up to 3 months. After opening — use within 14 days.

Toxicity and Biosafety of Flax (Linum usitatissimum)

Experimental data confirm a high biosafety profile of the Flax preparation (Linum usitatissimum). According to research results, the acute toxicity index (LD50) of the aqueous extract of flax seeds for oral administration to laboratory animals exceeds 5000 mg/kg of body weight, which indicates extremely low toxicity of the substance. This corresponds to hazard class 5 (practically non-toxic) according to the WHO classification. In addition, with prolonged use of the extract and oil forms, no signs of hepatotoxicity, nephrotoxicity, and mutagenicity were detected.

Reference: https://www.ncbi.nlm.nih.gov/p...

Pharmacodynamics — Flax (Linum usitatissimum)

The pharmacodynamic properties of flax are due to the content of a complex of biologically active substances, including lignans, polysaccharides, phenolic compounds, flavonoids, tocopherols, and essential fatty acids. These components provide a systemic and local effect on various physiological systems of the body. The most pronounced are anti-inflammatory, antioxidant, membrane-stabilizing, and cytoprotective effects.

Polyphenolic compounds and lignans demonstrate antioxidant activity, stabilizing cell membranes and reducing oxidative damage to lipids, proteins, and nucleic acids. They are able to inhibit the activity of enzymes involved in the synthesis of pro-inflammatory mediators, such as cyclooxygenase and lipoxygenase. These mechanisms underlie the modulation of inflammatory processes at the level of both mucous membranes and skin.

Polysaccharides and mucilages extracted from flax seeds have a pronounced enveloping and cytoprotective effect upon contact with epithelial surfaces, especially the gastrointestinal tract. Their high-molecular structure allows them to form a biologically active film capable of reducing mechanical irritation and inhibiting the absorption of toxins, as well as modulating the local microflora.

Essential fatty acids (primarily α-linolenic and linoleic) participate in the regulation of lipid metabolism and the synthesis of anti-inflammatory eicosanoids. They indirectly affect the activity of phospholipase enzymes, as well as the expression of genes regulating immune and metabolic functions, including PPAR receptors. This explains the potential of flax in regulating fat metabolism and modulating inflammatory reactions at the systemic level.

Lignans exhibit the properties of phytoestrogens, interacting with nuclear estrogen receptors. They can act as agonists or antagonists depending on the hormonal background, due to which they regulate signaling pathways associated with cell proliferation and differentiation. These properties are especially pronounced in tissues sensitive to hormonal regulation (endometrium, skin, mammary glands, etc.).

In addition, it has been established that flax extracts can have a moderate spasmolytic effect on smooth muscles, in particular, of the gastrointestinal and urinary tracts, which is associated with the interaction of flavonoids with calcium channels and adrenoreceptors.

Thus, the pharmacodynamics of flax covers a wide range of physiological processes, including antioxidant protection, regulation of inflammation, modulation of hormonal status, restoration of mucous membranes and the skin barrier, which makes this taxon a universal remedy for supporting systemic and local homeostasis.

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

Pharmacokinetics — Flax (Linum usitatissimum)

The pharmacokinetic characteristics of flax-based preparations depend on the route of administration and the composition of the substances contained in them. The most studied are oral forms, including seed powder, extracts, and oil infusions.

With oral administration, the main absorption of active components occurs in the small intestine. Polysaccharides and mucilages are practically not absorbed into the systemic bloodstream but have a local effect due to the formation of a protective gel shell on the surface of mucous membranes, slowing down the absorption of glucose and lipids. Lignans, in turn, enter the intestine in the form of glycosides and undergo bacterial hydrolysis with the formation of enterolactones and enterodiols, which are absorbed and circulate in the systemic bloodstream. These metabolites can accumulate in the liver, adipose tissue, and some endocrine-dependent organs.

Fatty acids from flax oil forms are effectively absorbed in the intestine and participate in lipoprotein metabolism. The main pathway of their metabolism is β-oxidation in the liver, incorporation into cell membranes, and the synthesis of anti-inflammatory mediators. They are partially excreted with bile, and to a lesser extent with urine.

Flavonoids and phenolic compounds undergo primary metabolism in the liver with the participation of phase I and II enzymes, including glucuronidation and sulfation. These processes ensure the transformation of polar metabolites, which are subsequently excreted in the urine. With topical application (ointment, cream, gel), the penetration of active substances is limited to the stratum corneum; however, if the skin barrier is damaged, entry into the systemic bloodstream in an insignificant volume is possible.

With transdermal and mucosal administration (for example, when using suppositories or nasal drops), partial absorption of lipophilic components, mainly fatty acids and tocopherols, is observed, with further distribution through the lymphatic system. Mucous membranes contribute to rapid local action and a prolonged effect.

Thus, the pharmacokinetics of flax components is determined by their chemical nature and route of administration. Most substances undergo microbial and hepatic metabolism, without exhibiting a pronounced cumulative potential and ensuring physiological excretion through bile and urine.

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

Mechanisms of Action and Scientific Rationale — Flax (Linum usitatissimum)

The biological activity of Linum usitatissimum is due to a multicomponent composition, including lignans (in particular, secoisolariciresinol diglucoside), α-linolenic acid, polysaccharides, flavonoids, phytosterols, and tocopherols. One of the central mechanisms of action is considered to be the effect of lignans on estrogen receptors α and β, where they act as partial agonists or antagonists. This interaction is accompanied by modulation of the transcription of genes regulating cell proliferation, apoptosis, and inflammatory signaling pathways, especially in tissues with high sensitivity to hormonal regulation.

Flavonoid components, including quercetin and kaempferol, realize their effects through antioxidant and anti-inflammatory cascades. Studies have shown their ability to inhibit the activity of the enzymes cyclooxygenase-2 (COX-2) and lipoxygenase (LOX), which leads to a decrease in the synthesis of pro-inflammatory mediators — prostaglandins and leukotrienes. At the same time, they suppress the expression of key pro-inflammatory cytokines, such as interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), indirectly inhibiting the NF-κB pathway activated in chronic inflammatory reactions.

Flax polysaccharides, mainly acidic heteroxyloglucans, have a high molecular weight and provide an enveloping and reparative effect on the gastrointestinal epithelium. These compounds form biofilms that reduce the access of damaging agents to the receptor structures of the epithelium, reducing the sensitization of neuropeptide and histamine receptors. Their local action also includes the induction of protective mucus secretion and restoration of the barrier function of mucous membranes.

Essential fatty acids, especially α-linolenic acid, realize a biomodulating effect through the activation of nuclear receptors of the PPAR (peroxisome proliferator-activated receptors) family, which regulate the expression of genes for lipid and carbohydrate metabolism, inflammation, and immune response. The effect on PPARγ and PPARα is accompanied by a decrease in the production of pro-inflammatory cytokines and an increase in the synthesis of anti-inflammatory eicosanoids (for example, prostaglandin E3).

A decrease in oxidative stress is also facilitated by the high concentration of tocopherols and phenolic compounds capable of neutralizing reactive oxygen and nitrogen species, preventing lipid peroxidation and DNA damage. These processes are especially pronounced in tissues with a high level of metabolic activity, such as the liver, kidneys, and vascular endothelium.

Thus, the action of Linum usitatissimum is realized at several levels — receptor, cellular, and tissue — through effects on nuclear and membrane receptors, enzyme systems, and signaling cascades.

References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270269/
https://www.sciencedirect.com/science/article/pii/S0753332221004753
https://link.springer.com/article/10.1007/s11894-020-00811-3
https://pubmed.ncbi.nlm.nih.gov/19625679/
https://www.tandfonline.com/do...

Synergy — Flax (Linum usitatissimum)

The pharmacological synergy of Linum usitatissimum with other biologically active substances is due to a complex interaction at the level of signaling systems, antioxidant protection, and modulation of inflammatory mediators. One of the well-studied directions of synergy is the combination of flax with curcumin (the main component of Curcuma longa), where joint inhibition of the NF-κB pathway leads to a potentiated decrease in the expression of IL-1β, IL-6, and TNF-α. Such a mechanism exhibits systemic modulation of inflammation, with an enhancement of antiproliferative and antioxidant action.

The additive activity of flax lignans and soy isoflavones with respect to estrogen receptors, especially in the tissues of the reproductive system, has been proven. The combined use of these phyto-components enhances the regulation of the expression of genes responsible for hormonal homeostasis, while minimizing the adverse effects characteristic of synthetic receptor agonists. It has been shown that the combined effect is accompanied by a decrease in aromatase activity and modulation of receptor sensitivity at the DNA level.

When used in combination with probiotic strains (for example, Lactobacillus plantarum and Bifidobacterium breve), a pronounced enhancement of the prebiotic action of flax polysaccharides is observed. This is due to the enzymatic transformation of lignan glycosides into biologically active metabolites (enterolactone, enterodiol), as well as an increase in the production of short-chain fatty acids (SCFA) involved in the regulation of the mucosal immune response.

With milk thistle oil (Silybum marianum), a modulating interaction has been established, in which the flavolignans of milk thistle enhance the hepatoprotective properties of flax fatty acids. The effect is realized through joint suppression of lipid peroxidation in liver cells and co-activation of antioxidant genes controlled by ARE (antioxidant response elements).

Finally, combined use with green tea extracts (Camellia sinensis) leads to potentiation of antioxidant and membrane-stabilizing action, due to the additive effect of catechins and phenolic acids at the level of systemic protection against oxidative stress.

References:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270269/
https://pubmed.ncbi.nlm.nih.gov/29092874/
https://www.sciencedirect.com/science/article/abs/pii/S096399692031506X
https://link.springer.com/article/10.1007/s11894-020-00811-3
https://www.tandfonline.com/do...

Geography of Use and Traditional Medicine — Flax (Linum usitatissimum)

Linum usitatissimum has one of the oldest histories of cultivation and use among cultivated plants of Eurasia. Archaeobotanical finds indicate the use of flax in Neolithic settlements of Europe about 7000 years ago, including in the Danube basin and on the territory of modern Ukraine. It was widespread in the culture of the ancient Sumerians and Egyptians, where it was used not only as a technical fiber but also in medicinal and funeral rites.

In Russian and Ukrainian folk medicine, flax was traditionally used in the form of hot and cold infusions of seeds for external and internal use. In Slavic herbal practice, it was used as a softening, restorative, and cleansing remedy, in particular, in the form of compresses, poultices, and decoctions. In Western Russian ethnotherapy, there was a practice of using flaxseed oil as part of ointments, often together with wax and turpentine, for restoring skin and as a ritual "oil of purification" in rituals associated with the expulsion of disease.

In the Caucasus, flax was part of medicinal collections and pastes for application to the body, used by Armenians, Georgians, and Ossetians. In Armenian phytotherapy, flax seeds were used as a base for preparing suspensions and powders, and were also included in mixtures with milk and honey. Among Ossetians, there was a ritual use of flax seeds in home purification rites: they were set on fire and the premises were fumigated, "driving away diseases."

In Ayurveda and Tibetan medicine, flax was assigned a supporting and balancing role. It was classified as an "oily, heavy, warming remedy" contributing to the restoration of the balance of vital principles. In Tibetan medical texts, flax is mentioned in sections related to the restoration of mucous membranes, as well as in the practice of oil rubs in the abdomen and lower back.

In traditional Chinese medicine (TCM), flax (under the name ya ma zi) was part of oil and wet extracts used as a topical softening agent. In southwestern China, especially in Yunnan and Guizhou provinces, it was used in local ethnomedicine recipes to maintain "pure qi."

In the Middle East and Arab medicine of the Middle Ages, flax was described in the works of Ibn Sina as a cleansing, enveloping remedy used for discomfort in internal organs. Flaxseed oil was part of medicinal massage mixtures, and crushed seeds were sometimes used as part of ritual protective formulas.

In Central Asia (in particular, in Uzbekistan, Tajikistan, and Kazakhstan), flax seeds were used for the preparation of ritual porridges and pastes used as part of traditional medicine and magical practices. Among Tajik healers, there was a practice of rubbing children with a flax mass with the addition of salt and honey to "calm the body" and remove "heavy wind."

In addition to medical purposes, flax often played a role in protective culture. In the Slavic tradition, seeds were sewn into cloth bags and placed at the head of the sick. In Baltic and Scandinavian beliefs, flax fiber was associated with the goddesses of fate and was used in rituals of protection and purification of space. In the East, its oil was used to light temples and as a base for rubs in rituals of purification from "bad energy."