Alpha 2 receptors are associated with sympatholytic properties . ? Adrenergic agonists have the opposite function of alpha blockers.
3.
Beta blockers, in addition to their sympatholytic ?1 activity in the heart, influence the renin angiotensin system at the kidneys.
4.
Sympathomimetic drugs mimic or enhance at least some of the effects of norepinephrine released by the sympathetic nervous system; sympatholytic drugs, in contrast, block at least some of the effects.
5.
Side-effects include combined sympatholytic ( e . g ., orthostatic hypotension and sexual dysfunction ) and parasympatholytic ( e . g ., constipation, urinary retention, glaucoma, blurry vision, decreased lacrimal gland secretion, dry mouth ( xerostomia ) ) effects.
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