seed is the richest source of omega-3 fatty acid and lignans." Oral intake of magnesium has also been indicated in providing relief: two double-blind , placebo -controlled studies demonstrated a positive therapeutic effect of magnesium on dysmenorrhea. [http://www.ncbi.nlm.nih.gov/pubmed/2675496?dopt=Abstract Magnesium--a new therapeutic alternative in primary dysmenorrhea] [http://www.ncbi.nlm.nih.gov/pubmed/2349410 Therapeutic effects of magnesium in