When we take medications, we generally do two things:  first, we swallow some pills, then we wait for them to kick in. Whether or not they do, however, may be tied to our gut microbes. Intestinal bacteria influence the availability and activity of therapeutic drugs in the body. For instance, some bacteria metabolically convert, or ‘biotransform,’ drugs into their active forms; others inactivate them. And some, according to a new report published in Nature, don’t chemically manipulate drug molecu...