Re: Scientists perform successful trial of new antibiotic on cancer reoccurrence afte
It may be Zinc more than Calcium although both seem to be involved. I hate to split hairs but I want to be accurate. Both Zinc and Calcium (and the iron in Ferrous sulfate) are divalent (two positive charges) ions. If you take a Tetracycline drug or a Quinolone drug (Cipro, Levaquin etc) with a divalent ion chemical the absorption of the antibiotic will be inhibited
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