Postural hypotension was found in 11-25% and PPH in 40-54% of individuals with Parkinson's disease. [38,57] Levodopa and dopaminergic agonists can cause PH.Dopamine agonist therapy can cause acute ...

Intrinsic sympathomimetic activity (ISA): Beta-blockers with ISA only partially antagonize while actually causing a small degree of activation of the beta receptors.So they will have some beta ...

Beta-blockers vary in several properties: cardioselectivity, intrinsic sympathomimetic activity (ISA), lipid solubility, and effect on other receptors in addition to beta-2 receptors.