Pharmacology Anti Adrenergic System d1f27425 All are true regarding prazosin, EXCEPT : A First dose effect B Impaired glucose tolerance C Selective alpha-1 blocker D Is an antihypertensive drug High-Yield Explanation Ans. is 'b' Impaired glucose tolerance * "Prazosin improves the carbohydrate metabolism.It also improves lipid profile lower LDL, increase HDL"