Acetal is a derivative of alcohol, employed as a sedative and hypnotic. It is usually given as an emulsion.

Average dose,ʒ 1.-4 mils.

Acetone (official) is prepared by the dry distillation of calcium acetate. It is a colorless liquid with a peculiar ethereal odor, and sharp, biting taste. Mis-cible with water, alcohol, and ether. Employed as a nervine, as an intestinal antiseptic and anthelmintic.

Acetozone is a proprietary form of benzoyl-acetyl peroxide, and is used as an intestinal antiseptic and antipyretic.

Airol (bismuth oxy-iodo-gallate), or dermatol oxidized with the addition of iodine, forms a greenish gray, fine, voluminous, inodorous, and tasteless powder. Moisture causes it to turn red with loss of iodine. Soluble in dilute acids and alkalies. Used as a dusting powder in place of iodoform.

Albolene, a refined product of petroleum that cannot become rancid. Used as a basis for ointments. Albolene liquid is a colorless, odorless, tasteless fluid, very light and diffusible. Used as a solvent for drugs in oleaginous solution for sprays.

Analgen is a remedy used as an antineuralgic, antipyretic, and analgesic.

Average dose, gr. viii.-0.5 Gm., repeated in three hours.

Anesthol is an anaesthetic, composed of chloroform, ether, and ethyl chloride in the proportions respectively of 1, 2, 3, which corresponds closely to the A. C. E. mixture.

Antinervin contains ammonium bromide, salicylic acid, and acetanilid. It is used as an anodyne and antineuralgic.

Average dose, gr. viii-0.5 Gm.

Apiol is a steroptene derived from garden parsley. Apioline is claimed to be the true active principle of parsley. Each acts as a stimulating emmenagogue. Average dose,  v.-0.3 mil. Continued use may bring on headache, giddiness, ringing in the ears, and mild intoxication. The U. S. P. admits the oleoresin.

Apocodein hydrochloride is an amorphous yellowish powder used as an expectorant. Hypodermic dose, gr. i.-0.06 Gm.

Argyrol is a combination of silver with the yolk of eggs, containing 30 % of silver. It is used as an antiseptic in inflammatory affections of the mucous membranes. Solution 5-20 %.

Aristol (Annidalin)

The essential constituent of aristol is iodine, of which it contains about 45 %, other substances entering into its composition being thymol and sodium. It is odorless, and is used as a substitute for iodoform. As an antiseptic it is not strong and has no poisonous qualities. It is used in dusting powders, ointments, and solutions in oil, ether, or collodion, usually in a strength of from 5-10 %.

Asaprol has analgesic properties. It also checks hemorrhage, lowers temperature, and lessens nervousness and insomnia. It increases the amount of urine, and sometimes gives rise to profuse perspiration. Internally gr. v.-0.3 Gm. may be given in a day. It is soluble in water and in alcohol, and is incompatible with quinine, iodide of potassium, and the soluble sulphates. For lotions or irrigation it is prepared in a strength of 1-5%.

Asparagin is a derivative of marshmallow root and is also contained in asparagus. It is used as a diuretic. Average dose, gr. ss.-0.03 Gm.

Aspirin

Compound made chemically from salicylic acid. Action similar to that of sodium salicylate, but more lasting.

Average dose, gr. viii.-0.5 Gm.

Atoxyl is an amido-benzene compound of arsenic, administered in the form of a hypodermic in place of arsenic by mouth.

Bebeerin, an alkaloid in the form of a white amorphous powder with a bitter taste, used as a substitute for quinine. Average dose, gr. ss.-0.03 Gm.

Benzonaphthol is a white, crystalline powder, used as an intestinal antiseptic and disinfectant. Average dose, gr. v.-0.3 Gm.

Benzosol is a compound of guaiacol. A colorless, inodorous, tasteless powder, insoluble in water. It contains about 50% of guaiacol.

Average dose, gr. v.-0.3 Gm.

Betol or Naphthalol is a compound analogous to salol, but containing 10 % less of salicylic acid, and being correspondingly less active and less effective. In the intestines it decomposes into naphthol and salicylic acid. It is used in the same way as salol. It is best given in pill or emulsion.

Average dose, gr. iii.-0.2 Gm.

Bismuton is a canary-yellow powder containing bismuth, resorcin, and tannin. Average dose, gr. viii.-0.5 Gm.

Bismutose is a fine greenish yellow powder, with astringent taste, odorless and insoluble. It contains 22 % bismuth in albumin and sodium chloride. Used as an antacid and antidiarrhoea remedy. It acts more quickly than other bismuth compounds but is more constipating. Average dose, gr. xv.-I Gm.

Boro-salicylate of Glycerin is a compound of boric and salicylic acids in concentrated form in which all their antiseptic and microbicide powers are retained, and is miscible with water in all proportions. Five mils of the compound contains 1 Gm. each of salicylic and boric acids.

Bromal Hydrate is made by the action of bromine on alcohol. It is similar to chloral hydrate in its actions, being antispasmodic and hypnotic, but is more powerful than chloral and more direct and dangerous in its influence over cardiac muscle. Large