Midodrine is a selective α1-adrenoceptor agonist that acts as a vasopressor/antihypotensive agent for the treatment of dysautonomia and orthostatic hypotension.

AGN192836 (AGN 192836) is a potent, selective α2 adrenergic (alpha 2-adrenoceptor) agonist with EC50 of 8.7, 41 and 6.6 nM for α2A, α2B and α2C receptor, respectively.

Ajmalicine (Raubasine) is a potent adrenolytic agent which preferentially blocks α1-adrenoceptor. Ajmalicine is an reversible but non-competitive nicotine receptor full inhibitor, IC50 = 72.3 μM. Ajmalicine also can be used as anti-hypertensive, and serpentine, with sedative activity。