Neuroton

Spermo - nuclein salicylate. Marketed as sterile solutions for subcutaneous injection, as tablets, and as capsules in combination with strychnine nitrate (1/64 gr) and iron arsenate.

Neutralon

An aluminium silicate for the treatment of gastric ulcers, in doses of a half to a whole teaspoonful before meals. Supposed to protect the affected part. Nevraltein. - See Neraltein. Nirvanin is the name applied to a variety of orthoform occurring in white prisms and soluble in water. Recommended as a substitute for cocaine to produce local anaesthesia. For the eye a 2-per-cent. solution is used. Dose:I to 2 grains, or more, hypodermically.

Nizin

Trade-name for zinc sulphanilate, a venereal antiseptic.

Nosophen is tetraiodophenol-phthalein. A yellow powder, insoluble in water; used in place of iodoform, and internally in doses of 5 grains or more.

Novaspirin

Disalicyl-anhydro-methylene citrate. Given similarly to aspirin, in 15-grain doses for influenza, neuralgia, and the like.

Nuclein

This term is applied to nitrogenous and phosphorus compounds occurring in the organism. They consist of nucleinic acid and a basic substance of a complex nature (albumen). They are insoluble in alcohol, but soluble in caustic alkalies, and resist peptic digestive agents. Nuclein derived from yeast is principally used. Dose: 7 1/2 grains. Several 'salts' of it are mentioned herein. Nucleol is a pure nuclein.

Odylis

Terpin-resorcinate, a yellowish oil of pleasant odour, made by warming together molecular proportions of resorcin and terpin, soluble in alcohol, ether, and oils. Given in gelatin capsules in affections of the bladder.

Omal is the trade-name of Tri-chlorophenol {q.v.).

Omorol

An insoluble silver protein used as an antiseptic.

Oresol (Oreson), or guaiacol glycerate, is recommended as a mild form of the base, and is soluble in water (I in 40) and in alcohol. Dose: 3 to 6 grains. (See also Gnaiamar.)

Orexin

A synthetic appetiser. The hydrochloride is a colourless and odourless crystalline powder, with a biting and bitter taste. The tan-nale is tasteless, and insoluble in water. Dose:4 to 8 grains.

Orphal Or Orphol

Beta-naphthol bismuth. Used as an intestinal antiseptic for children in doses of 4 to 8 grains.

Orsudan

The trade-name for sodium 3-methyl-4-acetylamino-phenylarsonate, employed in malaria, syphilis, sleeping-sickness, pernicious anaemia, and skin-diseases. The syphilis treatment consists of ten intramuscular injections. Orsudan is soluble in 4 parts of water and contains 25.4 per cent. of arsenic. Dose: 1 to 5 grains.

Orthoform is the methyl ester of para-amidometahydroxybenzoic acid. ('New' orthoform is meta-amido-para-oxybenzoic acid methyl ester.) A white powder, slightly soluble in water. Used externally as an anodyne for painful wounds and burns, and internally (the hydrochloride), in doses of 7 1/2 to 15 grains, as an anodyne.