MISTURA CRETAE--CHALK MIXTURE

Composed of compound chalk powder, 20 parts; cinnamon water, 40 parts;

water to make 100.

DOSE.--Dogs, 1 to 2 oz.; cats, 1 to 2 dr.

ACTIONS.--Internally, chalk is the slowest acting antacid, because of

its comparative insolubility and is of value when it can exert its

long-continued influence throughout the digestive tract. It resembles

bismuth in mechanically coating or protecting inflamed or irritable

surfaces. It is not so astringent nor antiseptic as the bismuth salts,

and these are generally preferable to chalk for the smaller animals. It

is excreted unchanged in the feces. Externally it is a dessicant and

slightly astringent powder, also protective.

USES.--Chalk forms a dusting powder for moist eczema, slight burns and

intertrigo; zinc oxide and starch (one to four) is, however, a better

preparation. Chalk is the most useful antacid for diarrhoea accompanied

by fermentation of the intestinal contents, while its local astringent

and protecting influence assists in overcoming the trouble. It is

especially good for foals and calves given in flour gruel and often

conjoined with catechu, ginger and opium.

Chalk may be given to dogs in pills or powder; to other animals in

powder, capsules or electuary. Chalk is frequently prescribed suspended

in flour, gruel, milk or mucilage to the larger animals. The chalk

preparations are suitable for dogs and cats.

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