INDIAN TOBACCO.THE DRIED AERIAL PARTS OF LOBELIA INFLATA (LOBELIACEAE), LOBELINE IS THE MAIN ALKALOIDAL CONSTITUENT. LOBELINE, WHICH CHIEFLY ACCOUNTS FOR THE ACTIVITY OF LOBELIA, HAS PERIPHERAL AND CENTRAL EFFECTS SIMILAR TO THOSE OF NICOTINE. LOBELIA HAS BEEN USED MAINLY IN PREPARATIONS AIMED AT RELIEVING RESPIRATORY-TRACT DISORDERS. LOBELINE HAS BEEN GIVEN BY MOUTH AS THE HYDROCHLORIDE OR SULPHATE AS A SMOKING DETERRENT.