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Medicines intended to act on the mucous membrane of the stomach should only be given when that organ is empty. If distant parts are to be affected in the most prompt and efficient manner and the medicine is free from distinct irritating qualities, it should be taken on an empty stomach; as when digestion is going on, the contents of the stomach are acid in reaction and if alkalies are given combinations take place and salts are formed. If alkalies are given before digestion begins, diffusion of the acid-forming constituents of the blood takes place, and in this way the acidity of the gastric juice is promoted; likewise acids given before meals increase the diffusion of the alkaline constituents of the blood.
METHODS OF ADMINISTERING MEDICINES
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Drenching, bit, balling gun, capsule gun, bottle, dose syringe and hypodermic syringe.
Anaesthetics administered in feed bags or proper inhaler.
TABLES USED IN PRESCRIPTION WRITING
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APOTHECARIES OR TROY WEIGHT.
20 Grains (Granum) (Gr. or Grs.) = 1 Scruple. 3 Scruples (Scrupulum) (Sc.) = 1 Drachm (60 Grs.) 8 Drachms (Drachma) (ʒ) = 1 Ounce. 12 Ounces (Uncia) (℥) = 1 Pound (℔)In prescription writing the pound sign should not be used; always express large quantities by ounces.