Hello, masturbation is an exercise. And with an exercise no organ can get weaker! actually it grows stronger! so don't need any medications and remove the thought of weak penis from your mind! if anyone's penis is able to get erect. It is never weak! over masturbation like 2 to 3 times per day for everyday. Is not good for health. Otherwise one time per day even for your whole life can never be wrong for your health and actually studies shows us that it can even benefit our health.