 [ Symptoms ] hi i have headake for 3 years and i try all medicine<negative_smiley> hi please healp me [ Disease ] if i am not mistaken the mayo clinic studied this and said only one anti biotic has been shown to impact birth control is effectiveness at all it is rifampin out of an abundance of caution some doctors suggest using a second form of birth control for a month i am not sure how much it is affecting your life now or how much an unwanted pregnancy would mess things up i never bothered with an extra form of birth control bc of anti biotics but surely one month of a back up will not hurt