Effectiveness of different supplement brands?

by NancyLebovitz 5y16th Feb 20158 comments

3


A friend of mine told me she got very good results from Vitamin World melatonin, and little or no effect from Natrol melatonin, and that reminded me of recent news that many herbal supplements don't have any herbal content.

 

Does anyone have information, whether based in personal experience or from studies, about which brands are more reliable about their contents?