Tinctura Gentianae Composita. Lond. Dab. Compound Tincture of Gentian

"Take of gentian root, sliced, two ounces and a half; orange-peel, dried, ten drachms; cardamoms, bruised, five drachms; proof spirit, two pints. Macerate for fourteen days (seven days, Dub.), and filter."

Tinctura Gentianae Composita, Edin. Compound Tincture of Gentian, commonly called Stomachic Tincture.

"Take of yellow gentian root, sliced and bruised, two ounces; orange-peel, dried and bruised, one ounce; canella alba, bruised, half an ounce; cochineal in powder, half a drachm; proof spirit, two pints and a half Digest for seven days, and filter through paper."

Syn. Teinture de Gentiane composee (F.), Enziantinktur (G.), Tintura di Genziana (I.).

This is an elegant stomachic bitter and cordial; but in dyspepsia, in which it is more particularly indicated, the infusion is preferable.

Tinctura Guaiaci. Lond. Dub. Tincture of Guaiacum

"Take of guaiacum resin, powdered, seven ounces (four ounces, Dub.); proof spirit, two pints. Macerate for fourteen days (seven days, Dub.), and filter."

Tinctura Guaiaci officinalis, Edin. Tincture of Guaiacum.

"Take of guaiacum, in powder, six ounces; alcohol, two pounds and a half Digest for seven days, and filter through paper."

Syn. Teinture de Guajac (F.), Guaiaktinktur (G.), Tintura di Guajac (I.).

The difference in the proportion of the guaiacum in these formulae is to be regretted. It is separated from the alcohol by the addition of water; and, therefore, when this tincture is to be given in the form of draught it must be triturated with yolk of egg, or with mucilage, to enable it to combine with water. The dose is from f 3 j. to f 3 iv., in any convenient vehicle.

Tinctura Guaiaci Composita

Lond. Tinctura Guaiaci Ammoniata, Dub. Edin. Compound Tincture of Guaiacum.

"Take of guaiacum resin in powder, seven ounces; aromatic spirit of ammonia, two pints. Macerate for fourteen days (seven days, Edin. Dub).), and filter."

Syn. Teinture Ammoniacal de Guajac (F.), Ammonium guajaktinktur (G,), Alcoole Ammoniato con Guajaco; Tintura Guajachina volatile (I.).

1 Tinctura amara, P. L. 1745.

2 Tine, guaiacina volatilis, P. L. 1745. Tinct. Guaiaci ammoniata, P. L. 1824.

As the ammonia coincides with the operation of guaiacum more than spirit, this tincture is more efficacious as a stimulating sudorific than the former preparation. Water decomposes it, separating the guaiacum in dark curdy flakes. Chlorine, nitrous acid, and the spirit of nitric aether separate the guaiacum into curdy, coagulated masses, and impart to the whole an intense blue colour: but sulphuric and hydrochloric acids produce no change. Dr. Paris says, "if equal parts of quicklime and powder of guaiacum be rubbed together, and a quantity of water be poured over them, and the mixture allowed to stand until it become fine, we shall obtain a solution of this substance, which will mix in any proportion with aqueous vehicles without decomposition, and to which the aromatic spirit of ammonia may be subsequently added with effect." The dose is from f 3 j. to f 3 ij., triturated with any mucous or viscid matter.