Germlat, this from Wiki, although I'm sure you've already read it.....
-Hydroxytryptophan (5-HTP), also known as oxitriptan (INN), is a naturally occurring amino acid and chemical precursor as well as a metabolic intermediate in the biosynthesis of the neurotransmitters serotonin and melatonin from tryptophan.
I'm on zoloft, as my body's ability to work w/ seritonin is permanently damaged from stressful events going back to childhood. Wally and I went to, and consider our nutritionist an important part of our health.
For me, the 5-htp enhances the effects of the zoloft, making it more effective. However, as stated before, it gave me undesirable side effects. I think the zoloft is doing as good a job as it can, and the 5-htp was a little overkill. On the other hand, my system has always been sensitive to anything taken, so what might have been great for someone else (it did make me feel really good) is too much for me.
BTW dale, I just look up my records, and he had me on 100 mg, twice a day, @ breakfast and dinner.
900 seems like a lot. I'm just sayin'