OCR Text |
Show JALAP BINDWEED; JALAP BINDWEED. of them are so strong and purgative as when mixed; henceit is usually prescribed in substance from ten to fifteen grains; or it is usefully added in cold habits to accelerate the action of rhubarb, andin this form is found frequently to expel worms, being admirably adapted for the purpose. In very robust country habits jalap is a safe and good purge, producing its effects pow. Mix, anddigest them for four days; pour off the tincture, and boil the residue which remains in ten pints of distilled water, 112 erfally and certainly. In the rheumatism it is a very excellent purge; and is usefully employed mixed with two grains of gam. bodgein the dose of ascrupleto carry off water in dropsies, as well as when combined with four orfive grains of calomel. Being a powerful drastic purge, Hoffmann thought it highly improper for children and for weakly habits; but Cullen says, if it be triturated, before exhibition, with any hard powder,(andthe crystals of tartar are thefittest for the purpose,) it will operate in smaller doses than when taken byitself, and at the same time act very moderately, and without griping. When triturated ea INO; with hard sugar, in small doses it is a safe purge for children ; andin this way theywill receive it, the jalap having little taste. PaCS PREPARATIONS. Its medical preparations are : Tincture or Janar. (Tinctura Convolvuli Jalape. KE. Tinctura Jalape. L. D.) Takeof jalap, in coarse powder, three ounces (eight ounces L., five, D.); ———diluted alcohol, fifteen ounces (two pints, L. D.): Digest for seven days, andstrain the tincture through paper. Alcohol was formerly ordered for the preparation ofthis tincture ; but dilated alcohol is a preferable menstruum, as it dis- solves the active constituents of the jJalap, as well as pure alcohol, and is less stimulating. The water is an excellent addition, as it extracts so much of the gummyparts as correct tl 1e resinous, which are more active, andby itself very griping; and this tincture so made may be taken byitself, or mixed with syrup, from a drachm to half an ounce: but it is morefrequently added, from the quantity of a drachm or two, to any purgative draught to quicken its operation. The Exrract is thus prepared: Take of jalap, reduced to powder, one pound; ~——— of rectified spirits of wine, four pints: 113 and reduce it to two; then strain both the tincture and decoce tion through a cloth, evaporate themtill they begin to thicken, and reduce them, by gentle evaporation, till they are of the consistence of pills. By this means both the resinous and gummy matters are extracted, and it is employed in doses of from four to twelve grains. Triturated with equal parts of sweet almonds, its operation is rendered mild. |