When you buy a bottle of vitamins from a nutrition store, you’ll probably notice a best-by date on the bottom of the jar. But that inscribed number isn’t a hard-and-fast rule—there is some ...

As with other drugs, cephalexin can cause side effects, such as diarrhea, nausea, or vomiting. Cephalexin is not available in a brand-name version. The active ingredient in cephalexin is cephalexin.

It’s also available as the brand-name drug Klonopin. Clonazepam can cause mild to serious side effects, such as low blood pressure. Clonazepam comes in two forms: oral tablets that you swallow ...