Tapazole is used to treat Graves disease, Hyperthyroidism. The generic version is called Methimazole. The average Tapazole cash price is about $62.64 for a supply of Tablet 5 MG 30 pcs. You can reduce your Tapazole cost by up to 75% with our free Tapazole discount card. Bring it to a participating pharmacy near you to save on your prescription medication.