...Promoters claim that 5-HTP is more effective than tryptophan in relieving depression, sleeping problems and, possibly, narcotics withdrawal. However, I have seen no scientific evidence demonstrating that it works as advertised. Anyone taking any type of anti-depressant medication should avoid 5-HTP, except under a physician’s supervision. Side effects include nausea, constipation, flatulence, drowsiness and reduced sex drive. In high doses, 5-HTP may cause liver problems and aggravate asthma. Women who are pregnant or planning to become pregnant shouldn’t take it....

...As for foods: with or without 5-HTP, high carbohydrate meals may increase serotonin levels, but this varies from person to person. I wouldn’t depend on diet to increase serotonin levels – you could get a brief boost from a candy bar, but even if you do, it won’t last. The impact of more complex carbohydrates is less clear. Paradoxically, while protein rich foods contain tryptophan these same foods have been found to block serotonin production....

I knew I had seen something not good about it somewhere!