Infusum Cascarillæ. L. It is incompatible with the substances mentioned under Infus. Caryophyll: Form. 33. Dose, f℥j-f℥ij.
Infusum Cinchonæ. L.E.D. We obtain in this preparation a feeble solution of the active constituents of bark, which will agree with many stomachs that are rebellious to the stronger preparations. Dose, f℥i-f℥iij.
Infusum Cuspariæ. L. This is a judicious form of the bark, possessing its stimulant and tonic properties. Dose, f℥j-f℥ij.
Infusum Digitalis. L.E. This is the best form in which we can administer the foxglove, where our wish is to obtain its diuretic effects as speedily as possible. (Form. 110.) Dose, fʒij to f℥ss, twice a day, see Digitalis. Incompatibles. We shall counteract its effects by endeavouring to obviate its nauseating tendency by brandy and water, &c. Precipitates are produced by sulphate of iron, and the infusion of yellow cinchona, &c.
Infusum Lini Compositum. L.E. A cheap and useful demulcent; alcohol and preparations of lead, are of course incompatible with it; the tinctura ferri muriatis produces a flocculent precipitate.
Infusum Quassiæ. L.E. The proportion of Quassia directed for half a pint of water, is that of ℈j by the London, and ʒss by the Edinburgh College; the former is much too small, for, in order to obtain a saturated infusion, ʒij are required for that quantity of water. Incompatibles. The salts of iron produce no change in it; nor is it affected by any of those substances with which it is likely to come in contact in a medical prescription. It is highly useful in debilities of the stomach and intestinal canal, and in irregular and atonic gout, and it has been observed, that in hysterical atony, to which the female sex is so prone, the Quassia affords more vigour and relief to the system, than the Peruvian Bark, especially when combined with a small portion of sulphate of zinc. To this, as well as the other stomachic infusions, it is usual to add at the time of prescribing them a small quantity of aromatic tincture or spirit. Form. 35; 144. Dose, f℥ss-f℥iss.
Infusum Rhei. L.E. The Edinburgh infusion is stronger than that of London, and is rendered more grateful by the addition of spirit of cinnamon; these infusions, however, when given without any adjuvants, produce but a feeble effect. This is obvious, since ℈j of rhubarb in substance, is at least equivalent in its effects to ʒiss when in infusion. Incompatibles. The stronger acids; the sulphates of iron and zinc; nitrate of silver; tartarized antimony; acetate of lead; oxy-muriate of mercury, and the infusions of cusparia, cinchona, catechu, galls, and some other astringent vegetables; the alkalies deepen the colour, but produce no decomposition. Dose, f℥j-f℥ij.
Infusum Simaroubæ. L. This infusion is inodorous, of a clear straw colour, with a slightly bitter taste. It presents the best mode of exhibiting Simarouba bark. Dose, f℥ij, beyond this it will prove emetic. Incompatibles. Alkaline carbonates and lime water render it milky; and it is precipitated by the following substances; infusions of catechu; galls, and yellow cinchona; oxy-muriate of mercury; nitrate of silver, and acetate of lead. See Simaroubæ Cortex.
Infusum Tabaci. L. It is never used but as an enema, in incarcerated hernia, and in ileus. See Tabaci Folia.
2. Compound Infusions.