5-HTP Side Effects

Rare side effects are generally mild and include mild nausea, heartburn, flatulence, feelings of fullness, and rumbling sensations. These side effects are often reduced after extended treatment (four to six weeks).

If you are taking prescription anti-depressants such as MAO inhibitor, do not take 5-HTP until you consult with a doctor. See the section on 5-HTP Cautions for more information.