OCR Text |
Show 528 WHITE POPPY. 3. Dissolved in water, or watery fluids. Veryperishable. 4. Dried and reduced to powder. It is often given in combination with aromatics, astringents, WHITE POPPY, 529 times, it is said, to near one-fourth of the quantity of opium at first dissolved. The dose is commonly twenty-five drops at bed- emetics, bitters, camphor, soap, distilled w aters, mucilage, sys time to procuresleep. trate of antimonyand potass, and unctuous substances. AMMONIATED TiNctuRE oF Opium, FrormERLY PArEcoric Euixrr. (Tinctura Opii Ammioniata, olim Elixir Paregoricum. E.) rups, acids, carbonate of ammonia, wther, acetate of lead, tar. Some of these are certainly unchemical mixtures ; for I find by experi. ment that the solutions of opium are copiously precipitated by astringents, the alkaline carbonates, and all the metallic salts. PREPARATIONS. Purtrrep Orprum. (Opium Purificatum. L. D.) Take of opium, cut into small pieces, one pound; proof spirit of wine, twelve pints : Digest the opium with a gentle heat, stirring now andthentill it be dissolved, andfilter through paper. (Distil the tincture, so prepared, to a proper thickness, L.) (Distil in a retort until the spirit be separated : pour out the liquor which remains, and evaporate, until the extract acquires a proper thickness, D.) Purified opium must be kept in two forms; one soft, proper for forming into pills; the other hard, which may be reduced into powder. A pill of half a grain usuall y producessleep at night. Tincture oF Orrum, or Turratc Tinc rurr, comMMoNLy cALteD Liquip Laupanum. (Tinctura Opii, sive Thebaica, vulgo Laudanum Liguidum. E.) Take of opium, two ounces; —— diluted alcohol, two pounds: Digest for seven days, andfilter thro ugh paper. Lond. Dub. Take of hard purified opium, powd ered, ten drachms ; proof spirit of wine, one pint : Digest for ten (seven, D.) days , andstrain. As these tinctures, on evaporat ion, furnish the same quantity ofex tract, theyare believed to be of nearly equal strength ; but it is to be regretted that they are not so well adapted for keeping as could be wished: after Some time , a part of the opiumis gradually deposited from both, and consequently the tinctures become weake r: the part which thus separates, amoun ts somes Take of benzoic acid, —— English saffron, sliced, of each three drackms ; opium, two drachms ; —— volatile oil of aniseed, half a drachm; ammoniated alcohol, sixteen ounces : Digest for seven days, in a close vessel, andfilter through paper. This is a preparation of considerable efficacy in many spasmodic diseases, as chincough, &c., the ammonia removing the spasm immediately, while the opium tends‘to prevent its return. Each drachm contains about a grain of opium. from twenty to thirty drops. The doseis Pitts or Opium. (Pilule Opii. L.) Take of hard purified opium, powdered, two drachms ; extract of liquorice, one ounce: Beat them until they are perfectly united. The dosé is five grains at bed-time to procure sleep. Watery Extract or Opium. (Extractum Opii Aquosuni. D.) Take of opium, two ounces ; —— boiling water, one pint; Triturate the opium well in the water for ten minutes ; then, after waiting little, pour off the liquor, and triturate the re- maining opium with the same quantity of boiling water , pouring off the infusion in the same manner. This may be repea ted a third time. Mix the decanted liquors, and expose the mixture in an open vessel, for two days, to the air. Lastly, filter through linen, and, by slow evaporation, form an extract. one grain, The dose is Orrate Powper. (Pulvis Opiatus. L.) mTakeof Ai f hard purified opium, powdered, one drachm; ~—— burnt and prepared hartshorn, nine drachms : Mix them, 2m |