WHEN ATROPINE AND PRALIDOXIME ARE USED TOGETHER, THE SIGNS OF ATROPINIZATION(FLUSHING, MYDRIASIS, TACHYCARDIA, DRYNESS OF THE MOUTH AND NOSE) MAY OCCUR EARLIER THAN MIGHT BE EXPECTED WHEN ATROPINE IS USED ALONE. SINCE BARBITURATES ARE POTENTIATED BY THE ANTICHOLINESTERASES, THEY SHOULD BE USED CAUTIOUSLY IN THE TREATMENT OF CONVULSIONS; MORPHINE,THEOPHYLLINE, AMINOPHYLLINE, SUCCINYLCHOLINE, RESERPINE, AND PHENOTHIAZINE- TYPE TRANQUILIZERS SHOULD BE AVOIDED IN PATIENTS WITH ORGANOPHOSPHATE POISONING.