Which of the following decreases effectiveness of insulin -: (A) Thiazide, (B) Atropine, (C) b-blockers, (D) Acute alcohol ingestion
Answer is A. Ans. is 'a' i.e., Thiazide o Thiazide, furosamide, coicosteroids, oral contraceptives, salbutamol, nifedipine tend to raise blood sugar and reduce effectiveness of insulin.