yawning induced by apomorphine ( 40 micrograms/kg sc ) , physostigmine ( 50 micrograms/kg sc ) or pilocarpine ( 1 mg/kg sc ) was dose-dependently potentiated by the dhp calcium channel blocker nifedipine ( 1.25-10 mg/kg ip ) .
C2945601
dhp calcium channel blocker
C0028066
nifedipine