"my face has the acne. dr gave me monicyline 100 mg. use 2 times every 12 hours. after the 1st pill. i feel a lightly dizzy. i think it is ok. and i took the second pill after 12 hours, it made me more dizzy. and vomit too. i feel like flu. i cant walk around due to dizzy. very terrible. i cant ues this medicine anymore."