Ostauxin

Calcium paranu-cleinate. Dose: 8 to 15 grains as a tonic.

Ovaraden

A brownish and tasteless powder, composed of ovarian extract, I part being equal to 2 parts of fresh ovaries. Marketed in tablets each containing 4 grains. Ovaradentriferrin tablets contain also 2 1/2 grains of triferrin.

Ovogal

A greenish-yellow powdery compound of albumen with glycocholic and taurocholic acids, given in doses of a teaspoon-ful for liver-troubles accompanied by constipation.

Oxyacanthine

The sulphate of this alkaloid of Berber is vulgaris is a white, crystalline powder, soluble in hot water. Used in canine treatment only, the hypodermic dose being 1 1/2 to 3 grains.

Oxycamphor, or camphoroxime.

A white, crystalline substance obtained by replacing a hydrogen atom in camphor by hydroxyl, and used in 5-grain doses to relieve difficulty of breathing in bronchitis. Soluble 1 in 50 of water. Commercially is supplied in 50-per-cent. alcoholic solution as Oxaphor. Dose:10 to 20 minims.

Oxygar

A combination of hydrogen peroxide and agar-agar (= H202 10 per cent.). Dose: 15 grains three times a day, before meals, in certain gastric and intestinal affections.

Oxyntin

A preparation of protein and hydrochloric acid (5 per cent.). Dose:5 to 15 grains (in place of pepsin).

Oxysparteine

An oxidation-product of sparteine. The hydrochloride and sulphate (white crystals) are soluble in water. Used as a heart-stimulant. Dose:1/2 to 1 grain, subcutaneously.

Pantopon

A proprietary preparation of the alkaloids of opium as hydrochlorides. Ten of it equals 5 of morphine and 4 of the other alkaloids. It is also known as Omnopon.

Papaverine and its hydrochloride are used as a sedative and in the diarrhoea of children. The hydrochloride is soluble in water. Dose: 1/8 to 1 grain, according to the age of the child.

Parabismuth

Bismuth and calcium para-nucleinate (see Os-tauxin), a yellowish powder, insoluble in water. Used in diarrhoea and dysentery. Dose:20 to 40 grains.

Paracodin

Dihydro-codeine. Dose: 1/6 to 1/2 grain in cough.

Paraform, sometimes called Tri-formol, bears the same relation to formaldehyde that paraldehyde does to aldehyde. By heating it gives off formaldehyde. It is a white, crystalline powder, with antiseptic and astringent properties, and is given in doses of 8 grains or more in choleraic diarrhoea. It is also used as a surgical antiseptic.

Para-plejapyrin. - A combination of equal molecules of para-toluolsulphamide and dimethyl-phenylpyrazolone. An antipyretic and anti-headache remedy in 15-grain doses.

Pararegulin

See Regulin.

Paratoxin

A petroleum-ether extract of bile, given hypodermically in tuberculosis for increasing the patient's resistance to the bacillus.

Paraxin

The trade-name for dimethyl - aminoparaxanthine, a white, crystalline substance sparingly soluble in cold water. Dose (as a diuretic):5 to 10 grains.