Every two minutes there's another call to a poison control center and about 14 of those calls are serious errors that require hospitalization. That's the word from the Journal of Clinical Toxicology recently. That's actually the "good news" of this story. The "bad news" is that serious medical errors doubled between 2000 and 2012.
The theory is that since more medications are being prescribed then we should expect more problems with them simply due to human error. Personally, that sounds like rationalization to increase profits at all of the drug manufacturers.
The first question you need to ask your doctor is, do I really need this medication or is there a more natural (and safer) option? Now since they don't get free lunches, trips or other perks from natural alternatives don't be surprised if he doesn't suggest anything. You may have to take responsibility for your own health and do some research on your own.
If a medication is necessary then take the time to learn how to take it safely and then BE CAREFUL.