Tioconazole
"This is the absolute worst product I have ever used. I had a yeast infection and couldn't bear the discomfort any longer so I bought the Monistat 1 and took it around 8:30pm I felt a little burning at first but nothing crazy. Fast forward to 2am and 4am I was woken out of my sleep to the intense itching and pain. It was terrible. By the next day I was completely swollen, sore, burning and itching. It was the worst experience I've ever had. I was tattooed the same day for 6 hours straight and that was 100x less painful then the Monistat reaction. I ended up having to go to the hospital who told me that indeed I had a bad reaction because the product was way too harsh and strong. Go to your doc ASAP!! It won't get better itself."