Niacin is dangerous in diabetes mellitus because:: (A) It causes insulin resistance, (B) It causes sudden hypoglycemia, (C) It decreases glucagon secretion, (D) It decreases effect of other OHA
Answer is A. Ans. a. It causes insulin resistanceRef: Goodman Gilman 12th e/P 900Niacin causes insulin resistance and hence causes severe hyperglycemia in patients of diabetes mellitus.Hence it should be avoided in patients of diabetes mellitus.