Yes! Also, do NOT mix 5-HTP with St-John's Wort (don't mix St-John's Wort with anything, really.). You may want to look up L-Tryptophan instead of 5-HTP. From

Yes! Also, do NOT mix 5-HTP with St-John's Wort (don't mix St-John's Wort with anything, really.). You may want to look up L-Tryptophan instead of 5-HTP. From my understanding (I am no doctor or scientist, but I do research what I put in my body), here is the order your body synthesize Serotonin: Tryptophan > 5-HTP > Serotonin > Melatonin. You may want to start with the Tryptophan itself. However, since taking 5-HTP, I have no interest in trying this out or taking any more of those supplements because I am feeling well now. It's also recommended to take EGCG (green tea extract) along with 5-HTP to keep your gut from absorbing the supplement and producing Serotonin there instead of in the brain. (It could possibly lead to heart valve failure if you don't!)