Hydropyrin

Trade-name for sodium acetyl-salicylate. A white powder, soluble in water. Uses and doses as acetyl-salicylic acid.

Hydroquinine Hydrochloride. A white crystalline powder. The base contains two more hydrogen atoms than quinine. Useful in malaria and pneumonia in similar doses to quinine salts.

Hydroquinone [C6H4(OH)2], the well-known photographic developer, has antipyretic and antiseptic properties. Dose:1 to 5 grains. Chiefly used as a lotion in ophthalmic practice, and as an injection in gonorrhoea:strength 4 to 8 grains per ounce.

Hydroxylamine Hydrochloride (NH2.OH.HCl).- Colourless crystals, easily soluble in water, alcohol, and glycerin. For lupus, psoriasis, pruritus, and other skin-diseases; resembles chrysarobin and pyro-gallol in action. The lotion is made 1/2 to 2 grains per ounce.

Hydrozone

A strong and stable solution of hydrogen peroxide.

Hypnal (Monochloral Anti-pyrin).- Colourless, odourless, and tasteless crystals. Used as a hypnotic in doses of 15 to 30 grains in an ounce of aromatic water.

Hypnoacetin is acetophenon-acetyl-para-amidophenol, a solid in scales, insoluble in water, soluble in alcohol. Antipyretic and slightly hypnotic. Dose:3 to 4 grains.

Hypnogen

A trade-name for diethyl-malonyl-urea.

Hypnone (Acetophenone) is a colourless fluid, sparingly soluble in water and more soluble in alcohol. Dose: 3 to 10 minims as a hypnotic. Being caustic, should be dispensed in gelatin capsules, each containing 1 minim of hypnone dissolved in 9 minims of almond oil.

Hyrgoferment

A trade-marked name for colloidal mercury.

Hyrgol

The trade-name of 'colloidal mercury,' a water-soluble compound containing nearly four-fifths of its weight of the metal. Has the medicinal properties of the metal. Dose: 1/4 to 3/4 grain in pill; subcutaneous injection, 1 to 2 per cent.; ointment, 10 per cent.

Iatrevin

A condensation-product of menthol and isobutyl phenol. Used as an inhalation in lung-affections.

Iatrol, Or Jatrol

An antiseptic powder (oxyiodomethylanilide) used like iodoform.

Ichthalbin is a combination of ichthyol and albumin. A brown, odourless powder, used as a dusting-powder externally in eczema and other skin-affections.

Ichthargan

A brown, odourless powder combining 30 per cent. of silver as ichthyol-sulphonate. Soluble in water, glycerin, and dilute alcohol. Used in gonorrhoea as an injection, 1/8 to I grain per ounce. Should be dispensed in amber-glass bottles.

Ichthoform is a compound of ichthyol and formaldehyde, and is a brown-black, odourless powder, insoluble in water. Externally is used as a substitute for iodoform ; internally, in intestinal disorders, especially of tuberculous origin. Dose: For children, 4 to 8 grains ; for adults, 15 to 30 grains.

Ichthyol (Ammonium Ichthyo-late). - A dark-brown and thickish fluid, insoluble in water, but soluble in alcohol and ether. Internally ichthyol is given in doses of 4 to 20 minims, but it is much more used externally as an ointment with lano-line, and in other forms. For this purpose the ammonium ichthyolate is generally used, but sodium ichthyolate is preferable for pills, as that salt is much thicker than the ammonium one. The best pill of all is made with magnesium ichthyolate. This salt can be made by heating together 120 grains of ammonium ichthyolate and 15 grains of freshly-burnt magnesia (made into a paste with 2 drachms of water). Use the heat of a water-bath. A light chocolate, powdery mass is obtained, which only requires a little water to make into a suitable pill-mass. Two grains of the magnesium salt equals 3 grains of ammonium ichthyolate. Zinc ichthyolate is preferred for injections and the like. The following are compounds or preparations of ichthyol: Ichthar-sol (arsenico-ammonium ichthyolate); Ichthermol (mercuric sulpho-ichthyolate, containing 24 per cent.

Hg, antiseptic); Ichthosin (ichthyol and eosin mixture); Ichthosot (combination of ammonium ichthyolate and guaiacol carbonate; pills, each contains ichthyol gr. iss. and creo-sotal, gr. ss.); Ichthyod (lin. ich-thyoloiodicum comp.); Ichthyo-creosote (ichthyol 2, creosote 2, eucalyptol 1, and an excipient); Ichthyolidin (piperazine ichthyolate, dose 4 grains in pastilles); Ichthyol salicyl (a hygroscopic mixture of ichthyol with 25, 33, or 50 per cent. of sodium salicylate).

Igazol - A combination of para-form, terpin hydrate and iodoform, used for vaporising in the bedrooms of tuberculosis patients, so as to saturate the atmosphere with formaldehyde.

Intestin is the trade-name of a compound of bismuth oxide, naphthalene, and benzoic acid. Dose: 8 to 15 grains as an intestinal antiseptic. Intestinol is an antiseptic powder, consisting of sodium ben-zoate and carbonate.