Hi and welcome to HCM.
Masturbation is very common among adults, no need to feel guilty about this. It is not abnormal and most of the people would have masturbated in their life time.
Masturbation wont make you weak, its all in your mind
If you are masturbating very frequently that is almost daily then you have to control this habit. Twice or thrice weekly is acceptable, but their are no strict rule about frequency of masturbation.
Here are few tips
Avoid watching porn if you have habit of watching
dont be lonely,
try developing some new hobby,
Listen music,
Play some outdoor games.
Eat nutritious food
Divert your concentration to studies or some productive work
Their is no such medicine to git rid of this habit.
If nothing helps, then dont hesitate to consult a local doctor
Once again i
stress, this it is not biggest mistake of your life, Dont be guilty about this.
Regards
Dr Santosh