How much do you know, really, about the drugs you're taking? Probably not very much. I just found out yesterday that something my doctor gave me for strep throat can cause heart problems, something nobody told me when I took it.
Or take this website about the pradaxa side effects you may not have heard of. Pradaxa is an anti-coagulant used many times as a blood thinner. Pradaxa is said, though, to not have one thing that other blood thinners do -- something called a "reversal agent," which can stop internal bleeding.
So Pradaxa has been approved in 2010, but over 17,000 people in the next 2 years reported adverse side effects in which Pradaxa (according to an FDA database) was the primary suspect. The most commonly reported side effects were internal bleeding and hemorrahge, and 6,249 people were hospitalized, according to this pradaxa recall site.
Learn more about the drugs you are taking, and if you or someone you know has taken Pradaxa, click those links and read more.