Oliver Wendell Holmes once said that if the whole Phamacopediawere dumped into the ocean it would be better for mankind and worse for the fishes. Perhaps that is an extreme position. All medications have side-effects, but the issue is whether the benefits outweigh the risks. It is a good idea to know possible side-effects and reactions of any medications that you may take. Have your doctor explain them or look the drugs up in a Physicians Desk Reference (also called a PDR).