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Old 06-11-2011, 07:55 AM   #3
Jane Michel
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Join Date: May 2007
Posts: 267
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Out of the products at iherb.com, this is the tryptophan I chose. This is the 5-HTP I might have bought.

Those tryptophan caps do not contain rice flour, but the 5-HTP caps do. I couldn't find any reasonably priced 5-HTP caps that didn't contain rice flour. That's one reason I chose tryptophan over 5-HTP.

The other reason is the chain of conversion: the body can convert tryptophan to 5-HTP, which it can conver to serotonin and melatonin. I prefer letting it decide how much of each it wants to make from a lower level than a higher level.
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