Tioconazole
"It has been 3 years since I tried this product. Somehow I had forgotten how horrible it is! I used the Monistat 1 Day ovule at 4pm for a standard yeast infection, wanted to stop it before it was full blown. By midnight my vag was on Fire and by 2am my labia was so swollen it was hard to walk without pain! I used this 38 hours ago and I'm still in pain!! This Product Is Poison!!! Do Not Use if you value your health & sanity! Nightmare! Shame on the partner companies (Prestige Brands Holdings, Inc., the makers of MONISTAT®, and Vertical Pharmaceuticals, LLC ) that make soo much money off a Known severe symptom causing product. All female executives that  have a hand in marketing and promoting this product need a sample dose of the Fire Ovule!"