Sir my son is in 13 years. His forehead n side cheeks n in head also having lot of pimples, Doctor advice to take icon 150 mg and isotrine 10g n quinox 500 for 3 months. He taken first time it was cleared. But after 6 month again found lot in face n cheek n back also. Pls help me advice wat to do. He also having sever pain, if I take again tat tablet will he have any side effect, pls advice doctor