Pharmacology Mechanism of action of propylthiouracil in hyperthyroidism is: A Inhibition of organification of iodine B Inhibition of oxidation of iodine C Inhibition of coupling of two DIT residues D All of the above 💡 Explanation Mechanism of action of propylthiouracil in hyperthyroidism is: ✓ Correct Answer: D. All of the above