Ajmalicine (Raubasine) is found in herbs of Catharanthus roseus, is an antihypertensive drug used in the treatment of high blood pressure, decreases peripheral resistance and blood pressure.
Ajmalicine (Raubasine) is an adrenolytic drug which preferentially blocks alpha 1-adrenoceptor than alpha 2-adrenoceptor.
Ajmalicine (Raubasine) is an reversible non-competitive nicotine receptor antagonist with an IC50 of 72.3 μM.
Ajmalicine (Raubasine) acts preferentially at postsynaptic sites, competitively antagonizes the effect of noradrenaline on postsynaptic alpha-adrenoceptor with a pA2 value of 6.57, blocks the inhibitory effect of clonidine with an pA2 value of 6.2.