Abstract

Polar fractions of the methanolic extracts of the stem- and root-barks of SCHUMANNIOPHYTON MAGNIFICUM (Rubiaceae) reduced the effects of cobra venom cardiotoxin in the chick biventer cervicis nerve-muscle preparation IN VITRO. No activity was observed against a curaremimetic neurotoxin from cobra venom. Further fractionation of the extracts showed that the activity was not due to alkaloidal components, but the active substances could not be identified or isolated.

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