acne
"I was prescribed this by a PA who also works for the FDA. I was a bit hesitant to try at first after reading the patient pamphlet from the pharmacy. I gave in once the PA assured me that it was an established medicine that has been around for decades with few if any side effects. After approximately two months on this, I was amazed at how clear my skin had become. However, I also noticed that my teeth were beginning to develop brown spots on them as if I had just eaten chocolate.  I shared this concern with the PA during a follow-up visit and she claimed to have never heard of that side effect in adults. I was advised to discontinue the medicine. "