If you have to take an antibiotic, should you take a probiotic, too?

It probably won't hurt, and it could help, says Scott Gavura at Science Based Medicine. But it's also worth taking a closer look at the nuance behind probiotics, too. These are promising medications and a fascinating field of research, but educating yourself on what we do know and what we don't (especially when it comes to purity of various products) is a really good idea.