Vilitra 20 mg is a prescription medication used to treat erectile dysfunction (ED) in men. Its active ingredient, vardenafil, belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. It works by increasing blood flow to the penis in response to sexual stimulation, helping achieve and maintain an erection. The 20 mg dose is the highest available strength of Vilitra and is typically prescribed for men who did not achieve satisfactory results with lower doses, such as 5 mg or 10 mg. The medication is taken orally, about 30 to 60 minutes before sexual activity, and its effects can last up to 4–6 hours.