Canadian pharmacies are reporting shortages of a popular heartburn medication sold under the brand name Pepcid.

Now, a total of 27 ranitidine products have been recalled after an impurity called N-nitrosodimethylamine (NDMA) was detected in some of the drugs.

A new study says medications like Nexium and Zantac could be impacting important gut bacteria and causing infections.

A new study says up to a billion dollars could be saved by making some common drugs available over-the-counter, instead of requiring a prescription. But experts say it's not worth the risk.