Question: what is the difference between filtered and unfiltered flaxseed oil?
Answer: Flaxseed oil is an alternative source of heart healthy omega-3 fatty acids -- if you can't take fish oil. ... Flaxseed oil pressed from the seed doesn't supply any lignans, unless the oil contains ground flaxseed. Filtering the oil removes any lignans. Some manufacturers do not filter their oil, to preserve the lignans.