Managing life’s changes with Lignan 50, a flax based dietary supplement.

Flaxseed contains 10 times more lignan, an estrogen-like substance, than any other known plant source. We have it in a convenient capsule for you to take.

  • Extracted from Canadian Flax, the most abundant plant source of lignan.
  • Contains at least 50% SDG.
  • Reduces risk of breast cancer and uterine fibroids in women.
  • Reduces risk of prostate cancer and acute coronary events in men.
  • Helps manage symptoms of menopause and premenstrual syndrome.
  • Gluten Free, Non-GMO, Clean Label.


PTC recovers the most potent lignan from flaxseed possible. Lignans are substances found in the fibrous part of plant seeds, nuts, grains, legumes, fruits, some vegetables, and drinks such as tea, coffee and wine.1 The lignan of flaxseed has estrogen-like properties. Flaxseed contains up to 10 times more lignan than any other plant source.2

Bacteria in the gut convert flax lignan into mammalian lignans enterodiol and enterolactone.3 4 These compounds interact with estrogen receptors and reduce the risk of breast and prostate cancers,5 reduce the risk of uterine fibroids,6 help to maintain cognitive function in post-menopausal women,7 and reduce the risk of acute coronary events in men.8 The predominant lignan in flax is SDG (secoisolariciresinol diglucoside), which can act as an antioxidant and may help in the prevention of atherosclerosis, cancer and dementia.9 10 

Lignan 50 contains at least 50% SDG. Our Lignan 50 is one the most concentrated natural form of flaxseed lignan available.

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Nutritional Value of Flaxseed per 20g (2 tbsp), Whole Seed and Ground Seed

Whole Seed %DV Ground Seed %DV
Serving Size 20g 20g
Calories 106.80 105.80
Fat 8.432g 13% 8.41g 13%
Saturated Fat 0.7326g 4% 0.732g 4%
Cholesterol 0mg 0% 0mg 0%
Carbs 5.78g 2% 5.72g 2%
Fiber 5.46g 22% 5.43g 22%
Net carbs 0.32g 0.286g
Sugar 0.32g 0.286g
Protein 3.66g 7% 3.71g 7%
Vitamins %DV %DV
Vitamin A 0µg 0% 0µg 0%
Retinol Equivalent 0µg 0% 0µg 0%
Retinol 0µg 0% 0µg 0%
Alpha-Carotene 0µg 0% 0µg 0%
Beta-Carotene 0µg 0% 0µg 0%
Beta-Cryptoxanthin 0µg 0% 0µg 0%
Thiamin (Vit B1) 0.3288mg 22% 0.3289mg 22%
Riboflavin (Vit B2) 0.0322mg 2% 0.0315mg 2%
Niacin (Vit B3) 0.616mg 3% 0.617mg 3%
Pantothenic Acid 0.197mg 2% 0.197mg 2%
Vitamin B6 0.0946mg 5% 0.0944mg 5%
Folate (Vit B9) 17.4µg 4% 17.4µg 4%
Folic Acid 0µg 0% 0µg 0%
Food Folate 17.4µg 17.4µg
Dietary Folate Equivalents 17.4µg 17.4µg
Cobalamin (Vit B12) 0µg 0% 0µg 0%
Vitamin C 0.12mg 0% 0.11mg 0%
Vitamin D 0µg 0% 0µg 0%
Vitamin D2 ~ ~ ~ ~
Vitamin D3 ~ ~ ~ ~
Vitamin E 0.062mg 0.057mg

Nutritional Value of Flaxseed per 20g (2 tbsp), Whole Seed and Ground Seed

Whole Seed %DV Ground Seed %DV
Serving Size 20g 20g
Vitamin K 0.86µg 1% 0.86µg 1%
K1 Dihydrophylloquinone 0µg 0µg
K2 Menaquinone-4 ~ ~ ~ ~
Choline 15.74mg 3% 15.76mg 3%
Lycopene 0µg 0% 0µg 0%
Lutein & Zeaxanthin 130.2µg 130.3µg
Minerals %DV %DV
Calcium 51mg 5% 51mg 5%
Copper 0.244mg 12% 0.243mg 12%
Iron 1.146mg 6% 1.144mg 6%
Potassium 162.6mg 5% 162.8mg 5%
Phosphorus 128.4mg 13% 128.5mg 13%
Magnesium 78.4mg 20% 78.4mg 20%
Manganese 0.4964mg 25% 0.4976mg 25%
Sodium 6mg 0% 5.72mg 0%
Selenium 5.08µg 7% 5.08µg 7%
Zinc 0.868mg 6% 0.858mg 6%
Carbs and Sugars
Starch ~ ~ ~ ~
Sucrose 0.23g 0.23g
Glucose 0.089g 0.086g
Fructose 0g 0g
Lactose 0g 0g
Maltose 0g 0g
Galactose 0g 0g
Fatty Acids
Omega 3: Omega 6 3.9 3.86
Omega 6: Omega 3 0.3 0.26
Total Omega 3s 4562.6mg 4567mg
Linolenic Acid 4562.6 4567mg
Total Omega 6s 1182mg 1181mg

Source: USDA National Nutrient Database - Release 28

*Percent Daily Values are for adults or children aged 4 or older,
and are based on a 2000 calorie reference diet

Each "~" denotes a missing value