This section is from the book "Materia Medica: Pharmacology: Therapeutics Prescription Writing For Students and Practitioners", by Walter A. Bastedo. Also available from Amazon: Materia Medica: Pharmacology: Therapeutics: Prescription Writing for Students and Practitioners.
A preparation of dry or plastic consistence, made by extracting a drug with a solvent, and then removing the solvent by evaporation. An extract is of greater strength than the crude drug. Most extracts are about 4 or 5 times as strong as the drug from which they are made (extract of belladonna).
A plastic mixture for division into a number of equal objects, such as pills, troches, etc., and usually obtained by incorporating drugs with an adhesive substance.
A rounded or oval body of size to be readily swallowed, and made of cohesive drugs or drugs incorporated with an adhesive substance. Pills may be coated with sugar, gelatin, silver, keratin, or salol. The coating may be white, pink, chocolate-colored, etc.
A flat body, rounded or lozenge shaped, intended to be dissolved slowly in the mouth. It contains the medicinal substance, and in addition sugar, flavoring and adhesive material (troches of ammonium chloride).
A solid body made by the compression of a powdered drug or mixture of drugs in a suitable mold. With insoluble powders the hard compression retards disintegration.
A solid body made of drugs triturated with sugar of milk, and molded with the aid of moisture. It disintegrates as the sugar of milk dissolves.
A pleasant-tasting preparation made by mixing medicinal powders and aromatics with syrup or honey (confection of senna).
10. Granular Effervescent Salt (Sal Granulatus Effervescens). - A preparation made by adding sodium bicarbonate and citric or tartaric acid to the drug, moistening with alcohol, and passing through a coarse sieve to form granules. It is added to water and drunk during or just after the effervescence (effervescent sodium phosphate).
ii. Paper (Charta). - A sheet of paper impregnated with a medicinal substance (niter paper), or bearing it in a state of fine subdivision (mustard paper). There are none official.
12. Plaster (Emplastrum). - A solid mixture which becomes plastic and adhesive on warming; it is spread in a thin layer over muslin, moleskin, etc., for application to the skin (emplastrum belladonnae).
13. Poultice (Cataplasma). - A soft, usually hot and moist paste for external application, as a flaxseed poultice.
15. Cerate (Ceratum). - An unctuous mixture of firmer consistence and higher melting-point than an ointment (ceratum cantharidis).
17. Suppository (Suppositorium). - A solid which retains its shape at normal temperature, but readily fuses when inserted into a body orifice. Suppositories are usually made with a basis of cocoa-butter and are: (a) Rectal, cone shaped, weight, 30 grains (2 gm.) (b) Urethral, thin, pencil shaped, weight, 30 to 60 grains (2 to 4 gm.) (c) Vaginal, globular or elliptic, weight, 60 grains (4 gm.). Urethral and vaginal suppositories are sometimes made of glycerinated gelatin. Small rectal suppositories used for children and in irritative conditions of the anus are made about 15 grains (1 gm.) in weight.