Chlorate Of Potassium

Used mostly as a gargle or wash in aphtha and superficial ulceration of the mouth, and as an electuary in catarrhal sore-throat. It is sometimes given in strangles, purpura heamorrhagica, and other specific fevers, under the idea that it destroys the poison in the blood by giving up its oxygen.

Chloric Ether

Stimulant; antispasmodic and anodyne, useful in chills, colic, asthma, shock, etc.

Chloride Of Ammonium

Administered internally in bronchial catarrh, congestion of the liver, and in rheumatism. Dissolved in water with saltpetre and alcohol it forms a cooling application to the legs of horses.

Chloride Of Mercury (Calomel)

Calomel is used as a cathartic in combination with aloes. It should, however, be given with care, lest super-purgation be induced. It is also given in small repeated doses as an alterative in chronic skin diseases, and in long-standing enlargement of the hind legs due to lymphangitis or "weed". As a dry dressing to "thrush " it sometimes proves serviceable.

Chloride Of Zinc

A powerful caustic, used for the purpose of destroying warts and other morbid excrescences, and as an application to fistulous wounds and unhealthy sores. In weak solution it hastens the healing of indolent wounds.

Cinchona Bark

See Sulphate of Quinine.


This drug is used as a local anaesthetic, to destroy sensation in the part to which it is applied and allow of operations being performed without exciting pain. It is used in solution of the strength of 2 to 20 per cent, according to the part operated upon.

Cod Liver Oil

Useful as an alterative and tonic in debility affecting young rapidly-growing foals, especially in cases where there is a tendency to diarrhoea or looseness of the bowels. In combination with iron it hastens convalescence from influenza and strangles, and sustains the strength and vigour of old stallions.

Corrosive Sublimate

Corrosive, antiseptic, and disinfectant, applied externally as a caustic to indolent wounds, especially cpuittor and poll evil, and to fungating sores. In weak solution it is employed as an antiseptic dressing in the treatment of surgical wounds, and for the purpose of disinfecting surgical instruments and the hands of the operator.


Useful in diarrhoea in foals resulting from fermentation, which it prevents. Externally it is astringent and antiseptic, and is sometimes used in weak solution as a parasiticide in mange, and as a dressing for lice.


Heart tonic and stimulant, as well as diuretic, Useful in heart diseases. Given in conjunction with salines it promotes the absorption of dropsical swellings and effusions into the chest and belly.

Epsom Salts

Given to the horse in two- to four-ounce doses, it exercises a gentle action on the liver and kidneys, and is useful in regulating the bowels in the course of an attack of influenza or strangles or other specific fever. Given once a week to hard-worked horses, it prevents weed (lymphangitis) and azoturia.


Much used in horse practice as a general tonic and stomachic in dyspepsia, loss of appetite, and general debility.


Ginger, acting as a carminative, causes the expulsion of gas from the stomach and bowels. Mixed with aloes and other purgatives, it prevents griping.


As an emollient glycerine is used to soften and lubricate the skin in chapped heels and mud-fever, sore teats, etc. It is also useful in aphtha and superficial ulceration of the mouth when combined with borax or tannic acid.

Gum Acacia

Used as a demulcent in coughs and sore throats, also in cases of irritation of the stomach and the intestines.

Hydrochloric Acid (Diluted)

Useful in indigestion where the acid secretion of the stomach is deficient. Given in combination with quinine, it arrests discharge from the nose in chronic nasal gleet, and is an excellent tonic and astringent.

Indian Hemp

May be used in painful neurotic affections to deaden pain and produce sleep.

Iodide Of Mercury (Red)

Counter-irritant and vesicant. Used in the proportion of 1 part to 8 of lard as a blister to the legs of horses for splints and other ossific diseases, as well as chronic sprains to tendons, ligaments, and enlarged joints. Milder preparations are also employed as applications to glandular enlargements and other chronic swellings.

Iodide Of Potassium

When administered in full doses it causes glandular tumours to disappear, and arrests the formation of exostoses, such as splints, ring bones, etc. In acute and chronic rheumatism it is sometimes beneficial, and as a diuretic it disperses dropsical effusions.

Iodide Of Sulphur

Sometimes used as a dressing in chronic skin eruptions in the proportion of 1 part to 10 of glycerine or lard.


In solution it is applied externally for the removal of chronic enlargement of the joints and glandular swellings. It is also used as a parasiticide in the treatment of ringworm, and inhalation of the vapour of iodine has been successfully used in chronic nasal catarrh.


In the form of Dover's powder it is sometimes used as an expectorant and diaphoretic.


In small doses it causes the removal of dropsical effusions into the chest and abdominal cavity. It also produces sweating, and sometimes gives relief in bronchial asthma. It has not been employed to any considerable extent in the treatment of the lower animals.


Mixed with olive oil or glycerine it is applied to skin eruptions and abrasions to allay pain and soreness. Injected into the vagina it is beneficial in leucorrhoea. Given to foals in small doses three or four times a day it arrests diarrhoea. Mixed with linseed or olive oil it forms "carron oil", commonly used for burns and scalds.

Linseed Oil

It is aperient, laxative, and emollient. Two tablespoonfuls given in the food is an excellent alterative when given to poor, unthrifty animals, and to horses after an attack of influenza, strangles, etc.


The salts of morphia are derived from opium, and possess very much the same therapeutical properties. As an efficient dose of the former does not exceed a few grains, it is in some circumstances more convenient to inject it under the skin than to give it by the mouth. Moreover, when administered by subcutaneous injection, it is more rapidly absorbed into the circulation and more prompt in its action than when given by other means.


Mustard is a counter-irritant, sometimes rendered more active by the addition of turpentine or ammonia. It is useful in sore-throat and laryngitis, or as an application to the sides of the chest in pleurisy, bronchitis, and pneumonia.

It is sometimes used as a condiment with aniseed, coriander seed, turmeric, etc, but otherwise it is seldom prescribed in veterinary practice.


In the form of tincture, myrrh is sometimes applied to wounds to facilitate their healing, but beyond this it is of little practical use.

Nitrate Of Potassium

Febrifuge, diuretic and alterative. Useful in influenza, strangles, purpura, and other specific fevers.

It removes temporary enlargement or "filling" of the legs, and, combined with sulphur and antimony, forms an efficient alterative.

Nitric Acid

A powerful caustic, used to destroy warts and other abnormal growths, and to bring about a healthy action in spreading ulcers.

Nitric Acid (Diluted)

Astringent. When combined with dilute hydrochloric acid it is an excellent liver tonic, especially after an attack of hepatic congestion in the course of influenza, or in fat and idle horses.

Oil Of Turpentine

Given fasting, turpentine is a valuable remedy against intestinal worms. It is also useful as a diuretic, and to check bleeding in capillary haemorrhage. In conjunction with opium, it is given in spasmodic and flatulent colic.

As an outward application it is usually employed as a counter-irritant, for which purpose it is sometimes mixed with mustard, or with ammonia and linseed oil. In both these forms it is serviceable as an application in sore-throat, or as a counter-irritant in diseases of the organs of the chest and belly.


Internally administered, opium is one of the most useful antispasmodic and anodyne medicines employed in veterinary practice. It overcomes the spasm of tetanus and colic, affords relief in enteritis and pleurisy, and arrests the course of diarrhoea and dysentery. In combination with ammonia and squills, it is also useful in bronchitis. Externally, it is applied to sprains and bruises.

Nux Vomica

A powerful nerve tonic. Specially stimulates the motor centres of the nervous system and restores muscular power in paralysis. Combined with bicarbonate of potash or soda it is useful also in imparting tone to the stomach and bowels in general debility from age or disease. Old stallions are benefited by a short course of nux vomica and nitro-muriatic acid at the commencement and during the service season.