In taking acids, they should be sucked through a straw, and not allowed to come in contact with the teeth, as otherwise the latter organs will be injured by their effects; or should the acid come in contact with the teeth, the mouth should be immediately rinsed with a solution of saleratus or soda, to neutralize the acid.
ANODYNES.
Anodynes are those medicines which relieve pain by blunting the sensibility of the nerves, or of the brain, so that it does not appreciate the morbid sensation. An anodyne may be a stimulant in one dose, and a narcotic in a larger one. The properties of different anodyne agents vary, consequently they produce unlike effects. The size of the dose required, differs according to circumstances and condition. An adult, suffering acute pain, requires a much larger dose to produce an anodyne effect than one who is a chronic sufferer. An individual accustomed to the use of anodynes, requires a much larger dose to procure relief than one who is not. Doses may be repeated, until their characteristic effects are produced, after an interval of thirty or forty minutes. When the stomach is very sensitive and will not tolerate their internal administration, one-sixth of a grain of Morphia can be inserted beneath the skin, by means of a hypodermic syringe. Relief is more quickly experienced, and the anodyne effect is much more lasting than when taken into the stomach.
Opium (Papaver Somniferum). Opium is a stimulant, anodyne, or narcotic, according to the size of the dose administered. Dose—Of the dry powder, one-fourth to one grain; of tincture (Laudanum), five to fifteen drops; of camphorated tincture (Paregoric), one-half to one teaspoonful; of Morphine, one-eighth to one-fourth grain; of Dover's Powder three to five grains.
Hyoscyamus (Hyoscyamus Niger), commonly known as Henbane. The herb is used. It is a powerful narcotic, and unlike Opium, does not constipate the bowels, but possesses a laxative tendency. Therefore, it may be employed as an anodyne for allaying pain, calming the mind, inducing sleep and arresting spasms, when opiates are inadmissible. Dose—Of alcoholic extract, one-half to two grains; of fluid extract, five to ten drops; of the concentrated principle, Hyoscyamin, one-twelfth to one-fourth of a grain.
Poison Hemlock (Conium Maculatum). The leaves are the parts used. Poison Parsley, as it is sometimes called, is an anodyne, narcotic, and an excellent alterative. Dose—Of fluid extract, two to six drops; of solid extract, one-fourth to one-half grain.
Belladonna (Atropa Belladonna) or Deadly Nightshade. The herb or leaves are a valuable agent. In overdoses, it is an energetic, narcotic poison. In medicinal doses it is anodyne, antispasmodic, diaphoretic, and diuretic. It is excellent in neuralgia, epilepsy, mania, amaurosis, whooping-cough, stricture, rigidity of the os uteri, and is supposed by some to be a prophylactic or preventive of Scarlet Fever. Its influence upon the nerve centers is remarkable. It relaxes the blood vessels on the surface of the body and induces capillary congestion, redness of the eye, scarlet appearance of the face, tongue, and body. Dose—Of fluid extract, one-half to one drop; of tincture, one to two drops; of concentrated principle, Atropin, one-thirtieth to one-sixteenth of a grain; of the Alkaloid, Atropia, one-sixtieth of a grain. Even the most skillful chemists are very cautious in compounding these latter active principles, and the danger of an overdose is great.
Camphor. This drug is an anodyne, stimulant, and diaphoretic, and, in large doses, a narcotic and an irritant. It is an excellent stimulant for liniments. Dose—Of the powder, one to five grains; of the tincture, ten to twenty drops, given in simple syrup.
Hops (Humulus Lupulus). This is an excellent remedy in wakefulness, and may be used when opium is contra-indicated. A bag of the leaves, moistened with whiskey and placed as a pillow under the head, acts as an anodyne. Dose—Of the infusion of the leaves, from one to four ounces; of the fluid extract, one-fourth to three-fourths of a teaspoonful; of the concentrated principle, Humulin, one to three grains.