C-curarine-III chloride (Methvin) is a short-acting selective sympathetic ganglioblocker with weak antagonist activity on the nicotinic receptor at the neuromuscular junction; hypotensive. In test animals the drug produces a well-marked and short-term (easily controllable) hypotensive effect, without causing any histamine-like and direct vasodilation action. When used in relatively high doses methvin blocks the neuro-muscular conduction, potentiates the action of major muscle relaxants. A study of methvin in clinical conditions confirmed its high gangliolytic activity previously revealed in experiments.

The alkaloids febrifugine was originally isolated from the roots of the Chinese shrub Dichroa febrifuga. Febrifugine showed an antimalarial activity 50-100 times higher than that of quinine. Febrifugine acts by causing an increase in NO production during the immunological response - increased production of NO by febrifugine plays an important role in host defense against malaria infection in mice. Also, febrifugine are known to inhibit prolyl-tRNA synthetase of malaria parasite Plasmodium falciparum.