"i have had severe acne for 5 years. only on chin (half of the face). i&#039;m 20 years old and have been to about 5 different derms. the last derm gave me this pill but it was for only 1 month and 50 mg per day. i used this only one month and didn&#039;t see any change and stopped using it. after a while the same derm gave it to me again for 1 month and i didn&#039;t see any change. i&#039;m currently going to another derm and he prescribed it to me 75 mg 2 times per day for two months. my face cleared to the point that i didn&#039;t have to use makeup the last month of using it and one month after using it. later i was on stressed because of finals and my severe acne came back but not as bad as before. i&#039;m on it 100 mg 2 times per day (i am hoping after using it my acne doesn&#039;t come back again)"