I took OTC fish oil (Nature's Bounty 2400 mg soft gels), over 1 gram Omega 3s per day (4 soft gels per day). I took it mostly in hopes that it would lower my triglycerides, but also thought it could help my bipolar. Unfortunately it did neither, but it didn't hurt me to take it other than the soft gels being big pills to take that hardly fit into my pill boxes. I eventually quit them. Oddly, my triglycerides have normalized without them or even major dietary changes. I'm suspecting going off of Geodon helped with that, but that's just a wild guess.

The above is my experience. I would never discourage anyone from trying fish oil if their doctors approved. What doesn't help one person may help another.