One common concern among child-bearing-age women is whether taking antibiotics could have an effect on birth control. The answer, Marla Ahlgrimm asserts, is yes, specifically for women taking estrogen-based oral contraceptive.
Marla Ahlgrimm reports that antibiotics can have a negative effect on estrogen-based oral contraceptives. This is because antibiotics, which are meant to kill bacteria that trigger infection and illness, also attack healthy bacteria in the gut that activates certain types of birth control.
According to Marla Ahlgrimm, one of the first indications of antibiotic interference is mid-cycle bleeding, spotting outside of a period. This is a good sign that any oral birth controls being taken may be less effective and that sexual contact should be avoided if other forms of birth control are not immediately available. It is important to note that topical antibiotics, such as creams and gels, are not likely to affect birth control as they are not absorbed into the bloodstream. These are ointments used to heal cuts and scrapes.
Marla Ahlgrimm has co-authored two ground-breaking books,