On my way to Trader Joe's now to pick up some fresh Sea Lion! It took many years and tests to finally get a diagnosis of Celiac. One of the tests showed that I had such low serotonin, that it didn't even register! Even now after being gluten free, I still suffer from depression and low energy. I'm sure it will take awhile for me to heal completely. Please be aware, 5-htp is ONLY for SHORT TERM USE. I was NEVER made aware of this, until I found out on my own researching it. I had been taking it for TEN YEARS. Turns out it can actually BLOCK the production of serotonin after awhile.