Levitra (generic: vardenafil) is a prescription medication used to treat erectile dysfunction (impotence) in adult men. Levitra belongs to a group of drugs called phosphodiesterase (PDE) inhibitors, which work by relaxing muscles and increasing blood flow to the penis during sexual stimulation.

This medication comes in tablet form and is taken an hour before sexual activity, with or without food.

Common side effects of Levitra include facial flushing, headache, stuffy nose, and upset stomach.