THYROID INHIBITORS
1. INHIBIT HORMONE SYNTHESIS (ANTITHYROID DRUGS)
Propylthiouracil
Methimazole
Carbimazole
2. INHIBIT IODIDE TRAPPING (IONIC INHIBITORS)
Thiocyanates (–SCN)
Perchlorates (–ClO4)
Nitrates (–NO3)
3. INHIBIT HORMONE RELEASE
Iodine
Iodides of Na and K
Organic iodide
4. DESTROY THYROID TISSUE
Radioactive iodine (131I, 125I, 123I)