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Re:Melatonin: Much More Than You Wanted to Know (2018) by Tenoke on Monday September 06, 2021 @10:16AM (#28433859)
Looks like it was within 10% of described for 71% of supplements (which sounds pretty okay) but there were some big outliers for the rest.

It also suggests the biggest variance was in mixed-supplement pills while pure melatonin pills were mostly within the normal range. Definitely good to know but I wouldn't worry too much if you are just getting basic pure melatonin from a well-known manufacturer.

Re:Melatonin: Much More Than You Wanted to Know (2018) by emodendroket on Monday September 06, 2021 @10:51AM (#28434229)
30% not even being within 10% seems like a pretty huge amount of variance to me. I guess it is a matter of perspective.
Re:Melatonin: Much More Than You Wanted to Know (2018) by Tenoke on Monday September 06, 2021 @12:04PM (#28435051)
Sure but if that's mostly the mix of supplements in one tablet versions. If you buy pure melatonin from a respected brand it's going to be a pretty high chance you are getting the right dose.