I was suffering from migraine headaches on an almost daily basis. I tried Evening Primrose oil to see if it would help a different issue I had going on. After 2 months I didn't see any improvement with that but soon realized my migraines were getting less and less frequent. By the third month I realized that I hadn't had a migraine for the entire month. I started out taking them 3 times a day. After 12 weeks I went down to 2 a day and I still haven't had a migraine! I actually rarely get headaches at all anymore. It's well worth it to me to take 2 of these Vitamin World Evening Primrose Oil capsules instead of taking OTC migraine medication on an almost constant basis. As a added bonus my facial skin looks amazing! It was dull and dry before I started the Evening Primrose Oil and now it is bright and healthy. I also have less blemishes. All in all this is a great product for me. I couldn't be happier.