DOSAGE: Antiseptic, 0.125 Gm. or 2 grains (U.S.P.); anthelmintic, 1 Gm. or 15 grains, per day (U.S.P.). In the treatment of hookworm disease it should be given in as finely divided state as possible in dosage of from 0.5 to 4 Gm. or from 8 grains to 1 drachm. No fats, oils or alcohol should be given at the same time, for fear of absorption of the drug. The dosage may be regulated according to age as follows: Up to 5 years of age, 0.5 Gm. or 8 grains; up to 10, 1 Gm. or 15 grains; up to 15, 1.5 Gm. or 24 grains; up to 20, 2 Gm. or 30 grains; above 20, 3 to 4 Gm. or 45 grains to 1 drachm. _Nebula Thymolis (Nebul. Thymol.), Thymol Spray, N.F._--Thymol (1%) in light liquid petrolatum. =*Thymolis Iodidum (Thymol. Iod.), Thymol Iodide, U.S.P.= (Aristol).--Chiefly dithymol-diiodide. Should contain not less than 43 per cent. of iodine. A reddish-brown or reddish-yellow, bulky powder, with a very slight aromatic odor. Insoluble in water or glycerin; only slightly soluble in alcohol. ACTION AND USES: Antiseptic; used chiefly as a dusting powder. Less efficient than iodoform. =Thymus (Thymus), Thyme, N.F.=--Tops. ACTION AND USES: Aromatic and rubefacient; without advantage over camphor. DOSAGE: 4 Gm. or 1 drachm (N.F.). _Fluidextractum Thymi (Fldext. Thym.), Fluidextract of Thyme, N.F._--Thyme (100%). Absolute alcohol content about 20 per cent. DOSAGE: 4 Cc. or 1 fluidrachm (N.F.). =*Thyroideum Siccum (Thyroid. Sicc.), Dried Thyroids, U.S.P.= (Glandulae Thyroideae Siccae, U.S.P., VIII, Desiccated Thyroid Glands).--The thyroid glands of animals which are used for food by man, freed from connective tissue and fat, dried and powdered. Should contain about 0.2 per cent. of iodine. A yellowish powder, with a slight characteristic odor. ACTION AND USES: Used in thyroid deficiency; sometimes in obesity, in which it may be harmful. DOSAGE: 0.1 Gm. or 1-1/2 grains (U.S.P.). =TINCTURAE, TINCTURES.=--Tinctures with few exceptions are alcoholic or hydroalcoholic extractive preparations of vegetable drugs. The tinctures of potent drugs represent uniformly 10 Gm. of drug in 100 Cc. of the preparation, while tinctures of less potent drugs vary in strength but represent usually 20 Gm. of drug in 100 Cc. of the preparation. For the official tinctures see under the names of the respective drugs. For Tinctura Amara, see under =Gentiana=; for Tinctura Antiperiodica and Tinctura Antiperiodica sine Aloe, under =Quininae Bisulphas=; for Tinctura Aromatica, under =Cinnamomum Saigonicum=; for Tinctura Ipecacuanhae et Opii and for Tinctura Pectoralis, under =Opium=. =TINCTURAE AETHEREAE, ETHEREAL TINCTURES, N.F.=--When not otherwise directed, ethereal tinctures are to be prepared representing 10 per cent. drug strength, extracted with a mixture of alcohol and ether. Of doubtful advantage over ordinary tinctures.