Pimples on forehead

Patient: Hi..Im a 16 year old girl.A lot of small pimples have started popping up in my forehead these days.My parents took me to a homeopathic doctor and he gave me some medicine.But as always its working really slowly.Its been a month i have started taking that medicine,but no use.So please tell me the medicine which i should take daily so that my skin clears quickly.There is some acne marks too in my face and i have a super oily skin.So please help.