Penegra 25 mg Tablet is used to treat erectile dysfunction (ED) in men. It increases blood flow to the penis, helping men achieve and maintain an erection. It works by relaxing the blood vessels in the penis, allowing more blood to flow in when you are sexually aroused. You can take Penegra 25 mg Tablet with or without food. It's best to take it about 1 hour before sexual activity. The medicine usually starts working within 30 to 60 minutes. It only works with sexual stimulation and should not be used if you don’t have ED.