A PARTIAL NEUROMUSCULAR BLOCKADE WAS DEMONSTRATED AFTER LARGE INTRAVENOUS DOSES OF CAPREOMYCIN. THIS ACTION WAS ENHANCED BY ETHER ANESTHESIA (AS HAS BEEN REPORTED FOR NEOMYCIN) AND WAS ANTAGONIZED BY NEOSTIGMINE. CO-ADMINISTRATION OF AMINOGLYCOSIDE AND OTHER POLYPEPTIDE ANTIBIOTICS (COLISTIN SULFATE, POLYMYXIN A SULFATE, PAROMOMYCIN, AND VIOMYCIN) MAY INCREASE RISK OF RESPIRATORY PARALYSIS AND RENAL DYSFUNCTION. NON DEPOLARISING NEUROMUSCULAR BLOCKING AGENST ENHANCES NEUROMUSCULAR BLOCKADE DUE TO SYNERGISTIC EFFECT ON MYONEURAL FUNCTION.