INCREASED INCIDENCE OF OTOTOXICITY WHEN COMBINED WITH ETHACRYNIC ACID, RISK OF LESS OF HEARING / KIDNEY FAILURE. CEPHALOSPORINE, HYDROCORTISONE & INDOMETHACIN POTENTIATE NEPHRO-TOXICITY, POTENTIATES NEUROMUSCULAR BLOCKING AGENTS. THE NEUROTOXICITY OF AMINOGLYCOSIDES CAN RESULT IN RESPIRATORY PARALYSIS FROM NEUROMUSCULAR BLOCKAGE, ESPECIALLY WHEN THE DRUG IS GIVEN SOON AFTER THE USE OF ANESTHESIA OR OF MUSCLE RELAXANTS. PARENTERAL ADMINISTRATION OF MAG. SALT POTENTIATE THE EFFECTS OF NEUROMUSCULAR BLOCKING AGENTS.