U.S. doctors online nowAsk doctors free
OH
A 17-year-old male asked:

Minocycline stopped working for acne (bacteria resistance) derm switched to ampicillin. how's this compare to tetracyclines? when will it start workin

2 doctor answers2 doctors weighed in
Dr. Oscar Novick
Pediatrics 58 years experience
Ampicillen: It may take 7-10 days before it starts to work. Tetracyclines appear to work better.
Dr. Ed Friedlander
Pathology 44 years experience
Heads up: I see that you are actually taking both isotretinoin and some nerve medicine. During your time on antibiotics, were you also using a topical agent such as the Retin A you also list? Antibiotics will fail otherwise. All acne is manageable nowadays if you have continuity of care. Best wishes.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Sep 29, 2016

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.