This company explains fairly well I think:
http://www.nutrigold.com/5-HTP
I use their PharmaGABA product. And they are affordable.
You can go on iherb.com and read the various brands of 5-HTP.
NOW and Doctor's Best have always had a good reputation and GMP practices.
Some doctors get a notion about supplement purity... but they
seem to disregard, Brand name drugs which have recently been found contaminated! I've heard them say anything not FDA approved is not pure...things like that.
Do you know what your doctor sells, so I can look it up?
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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