TheLittleGuy
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I recently ordered some O.N. melatonin for sleep and noticed it contains 72 mg calcium. I take M.S.T ZMK and was wondering how much calcium it takes to have a negative effect on zinc. I have skipped a couple of doses of the ZMK to see how effective the mel. was for me,but I would like to contiunue use of ZMK as long as I am not wasting it. Thanks in advance.