All of the following statements about clonidine are true EXCEPT
It is an alpha adrenergic agonist
It can cause dry mouth as an adverse effect
Prazosin completely antagonizes its action
It inhibits sympathetic outflow.
Clonidine is a central sympatholytic. It is an agonist to alpha2 receptors. But prazosin is a selective alpha1 blocker selective alpha 2 blocker is yohimbine Clonidine can cause dryness of mouth, nose, and eyes due to central sympatholytic action. (REF. ESSENTIALS OF MEDICAL PHARMACOLOGY K.D TRIPATHI-6th edition. Page No.545,546)
Cardiovascular system