RT Journal Article SR Electronic T1 PHARMACOLOGIC STUDIES OF A NEW ANTITUSSIVE, ALPHA (DIMETHYLAMINOETHYL)-ORTHO-CHLOROBENZHYDROL HYDROCHLORIDE (SL-501, BAYER B-186) JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 384 OP 391 VO 128 IS 4 A1 James Y. P. Chen A1 Hugh F. Biller A1 Edwin G. Montgomery, Jr. YR 1960 UL http://jpet.aspetjournals.org/content/128/4/384.abstract AB The relative antitussive efficacies of alpha (dimethylaminoethyl)-ortho-chlorobenzhydrol hydrochloride (SL-501, Bayer B-186), codeine, dihydrocodeinone and several currently used nonnarcotic antitussives have been appraised by a method in which experimental cough was induced by aerosolized N sulfuric acid in unanesthetized dogs. SL-501, a new nonnarcotic antitussive, shows a potent and long-acting cough-suppressing activity in dogs. It has a relatively slower onset of maximum action than the narcotics. SL-501 exhibits moderate local anesthetic effects and a mild antispasmodic action. It also causes some prolongation of sleeping time in pentobarbitalized mice. No analgesic, sedative-hypnotic, antihistaminic or antiemetic properties were demonstrated. Acute and chronic toxicity studies in animals indicate that SL-501 is relatively nontoxic, and has a high therapeutic ratio.