Edited this post after I looked it up online. Quercetin competes with cipro, levaquin, and quinolene dugs. My LLMD told me not to take Levaquin within two hours of any supplement as it binds with magnesium, other minerals and now I see it can also bind with quercetin. This happens in the intestines preventing proper absorption but if spaced apart, it prevents this from happening.
Post Edited (nefferdun) : 3/13/2009 2:26:22 PM (GMT-6)