Cephalexin is a generic prescription drug that treats infections. Only the oral capsule comes in a brand-name version called Keflex. Cephalexin can cause side effects ranging from mild to serious.

Cefdinir is a generic drug that’s prescribed for infections caused by certain bacteria. As with other drugs, cefdinir can cause side effects, such as diarrhea, nausea, and vomiting. Cefdinir is a ...

Tikosyn (dofetilide) is a prescription oral capsule used to treat certain heart arrhythmias. Tikosyn can cause side effects that range from mild to serious. Examples include headache and chest pain.

Lenvima (lenvatinib) is a brand-name oral capsule that’s prescribed for certain types of cancer in adults. As with other drugs, Lenvima can cause side effects, such as nausea, diarrhea, and fatigue.