I am posting this on acne.org because i remember having such bad acne and how sad it made me feel. I would just like to say this previous summer i had an ulcer in my stomach due to antibiotics FOR acne I went on medication for my stomach and within 2 weeks ALL of my acne cleared up. I currently have now lowered my dosage to zantac HIIGH strength whenever i start breaking out and it clears it up. so i really hope this can help some people.