Pharmacology Endocrinology 114caf6a Plasma half life of carbimazole is: A 4 hours B 8 hours C 16 hours D 24 hours High-Yield Explanation Plasma half life of carbimazole is 6-10 hours. Half life of PTU is 1.5 hrs- very sho acting (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 250)