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Biotest Z-12 w/ ZMK

Biotest Z-12 ingredients: 4-amino-3-phenylbutyric acid HCl, L-theanine,5-hydroxytryptophan.

So no, it doesn't contain Zinc.There shouldn't be a problem taking them both.
 
Thanks, fellas. From the looks of things, the Z-12 parallels a lot of the ingredients in MST's Somnidren product. I'm looking for better sleep, not necessarily GH benefits. But still, Somnidren costs less than Z-12 and has the advantage of being designed to stack with ZMK.

At the very least, this will give me a chance to compare both (Somnidren and Z-12) side by side.
 
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