The flaxseed contains two parts: the hull and the embryo. We separate the hull from the embryo to produce pure flaxseed hulls. The lignans are found only in the hulls. Thus, the hulls are more concentrated with lignan than whole flaxseed. Consuming flaxseed lignans provides the benefits of whole flaxseed without having to eat several pounds of it. Flaxseed hulls also have other components: they contain fiber and antioxidants. We do not use chemicals to concentrate the lignans. The lignans are concentrated solely by virtue of the hulls' separation from the embryo. Some of our product descriptions say “concentrated lignans” and others say “flaxseed hulls.” They are both the same.
The lignan content in Flaxseed hulls can vary between 3-5%. This depends on growing season and growing conditions. We have offered 630 mg, 690mg capsules and 750 mg capsules. The capsules of flaxseed hulls are 100% pure flaxseed hulls. There are no chemicals used in the separation from the seed embryo and nothing else has been added. Therefore the lignan content in each capsule can be from 3% (18 mg) to 5% (31.5 mg) in the 630 mg capsules and 22.5 mg to 37.5 mg in the 750 mg capsules. We use 30 mg as a general rule of thumb since that is an average of 4% of the 750 mg capsule.