User:Sharleengill/sandbox

Drug Drug Interactions
There are many Drug Drug Interactions present with antacids. Some notable ones include tetracycline and fluoroquinolone antibiotics. Polyvalent cations present in the antacids (such as Ca2+, Al3+, and Mg2+) can chelate and form complexes with the antibiotics, thus reducing their bioavailability in the body. By spacing out the administration of the antacids (either 4 hours before or 2 hours after taking the antibiotic), the interaction can be avoided.