Xifaxan (rifaximin) is a prescription drug that’s used to treat diarrhea and a brain condition related to liver disease. Xifaxan can cause side effects that range from mild to serious. Examples ...

Myrbetriq (mirabegron) is a brand-name drug that’s prescribed for overactive bladder in adults and certain children. It’s an extended-release medication. As with other drugs, Myrbetriq can cause side ...

Valacyclovir is a generic drug that’s prescribed for certain viral infections in adults and certain children. As with other drugs, valacyclovir can cause side effects, such as headache and nausea.