Men with erectile dysfunction (ED) can be treated with Penegra (Sildenafil) 100mg Tablets. It includes sildenafil citrate, an active salt that helps people have strong, firm erections by increasing blood flow to the penis during sexual stimulation.
It is imperative that you speak with your physician prior to using Penegra 100 mg Tablets. About an hour before having sex, take the prescription with water. Do not chew or crush the tablet; instead, drink it whole.

It is advised that you take Penegra Tablet one hour prior to sexual activity. But you may take it as often as you like, even up to four hours before a sexual encounter.
You should only take it once per day.
Seek medical attention if the erection lasts more than four hours after a sexual activity.
You shouldn't take a Penegra pill if you've recently taken nitrates, which are drugs used to treat angina or chest pain.
You should not use this drug if you have had a heart attack, stroke, or heart failure in the last six months.