Ammonia.—What is known as ammonia water, or liquor of ammonia, or as spirits of hartshorn, or hartshorn, is of several strengths and is highly irritating and poisonous if taken internally. Applied externally, if of considerable strength, it will cause blisters and pain. Ammonia should not be applied to an open wound or irritated surface, except in case of snake bites or stings of insects, where it is intended to neutralize the poisons. The vapor of ammonia water, inhaled through the nostrils, affects the nervous system and may be used in fainting or epilepsy, but always with caution, for a strong preparation of ammonia applied to the nose may produce a violent shock. It is better to saturate a handkerchief or wad of cotton and hold it a short distance from the nostrils. The buyer is cautioned against the use of the strongest ammonia water.
Aromatic Spirits of Ammonia.—This is a stimulant, and may be used in cases of sick headache, hysteria, cholic, or fainting, in doses of from 10 to 30 drops in sweetened water.
Arnica.—Tincture of arnica is supposed to be of value in accidents, and especially efficacious for sprains and bruises. It has some value, mainly from the alcohol it contains and partly because it is applied with friction. It is a poison, and never should be taken internally. For external use it should not be applied at full strength, as it is apt to cause inflammation if the skin is tender.
Bicarbonate of Soda.—Bicarbonate of soda, commonly known as baking soda or saleratus, is distinct from sal soda or washing soda. It is of great value in the treatment of burns, and may be used as an antidote in poisoning by acids.
Camphor.—Camphor is purchased in gum or in liquid form. It never should be taken internally, except by advice of a physician. Nor should it be applied in its full strength directly to the wounds or to irritated or inflamed surfaces.
Ginger.—The essence or extract of ginger is a very popular remedy for trouble with the digestive organs, bowel complaints, etc., and should be taken in doses of from 10 to 40 drops in sweetened water, milk, or other liquid. It never should be used habitually, because it may establish a drug habit; nor should large doses be taken to check diarrhœa, as it is often inadvisable to too rapidly check the discharges.
Glycerin.—Glycerin may be used for burns, and, mixed with equal parts of rose water, it is a good lotion for chapped hands or lips, but it is irritating to the skin of some people.
Peppermint.—The essence of peppermint may be used for stomach-ache and bowel complaints, the usual dose being from 10 to 20 drops on sugar or in sweetened water. Oil of peppermint should not be taken, except when prescribed by a physician.
Turpentine.—Turpentine is the base of most liniments, and it has some value, but mustard plasters are safer. Turpentine is inflammable, and never should be applied near an open fire. Turpentine should not be given internally, unless prescribed by a physician.