The following precautions should be kept in mind in the treatment of acetylcholinesterase poisoning, although they do not bear directly on the use of Pralidoxime Chloride, since barbiturates are potentiated by the anticholinesterases, they should be used cautiously in the treatment of convulsion; morphine, theophylline, aminophylline, succinylcholine, reserpine and phenothiazine-type tranquilizers should be avoided in patients with organophosphate poisoning. Prolonged paralysis has been reported with patients when succinylcholine is given with drugs having anticholinesterase activity; therefore it should be used with cautions. Pregnancy, lactation.