Tioconazole
"I bought the Monistat 1 last night and after using it, I read the reviews. Needless to say, I was freaking out and waiting for something to happen. Fortunately, there were no horrible side effects. I did have some itching but I knew that was the medicine going to work on the yeast infection but other than that, I was very happy with the product and I will use it again."