TREATMENTS FOR DOG PARASITES 
Ascarids: Fast overnight. Oil of chenopodium, 0.1 cc. per kilo 
(1 cc. to a 22-pound dog), in capsule, immediately preceded or followed 
by 32 cc. (one fluid ounce) of castor oil. Purgation important. Febrile 
conditions, such as distemper, or mange are contraindications for 
treatment. Dog is usually salivated and may vomit, but drug is 
usually effective in spite of vomiting. Worms pass up to seven days, 
coming away after treatment as follows: First day, 82.7 per cent, 
second day, 7.7 per cent; third day, 4.3 per cent; fourth day, 3.1 per 
cent. These are the figures for a large series of dogs. Efficacy, ap¬ 
proximately 100 per cent. 
Another treatment: Fast overnight. Carbon tetrachlorid, 0.3 cc. 
per kilo (3 cc. for 22-pound dog) in hard capsules. Purgatives may 
be given 2 to 3 hours later. Care must be taken not to-get the drug 
into the lungs. Efficacy, 80 to 100 per cent. This drug is less 
effective for removing ascarids from dogs than is chenopodium, but 
it is also safer (therapeutic dose has an indicated safety factor of 53) 
and is preferable in the cases of patients that are very young, very 
old, feeble, or suffering from mange or febrile conditions. In general 
the drug can be given with safety to pups two weeks old. 
Another treatment: Where there is inflammation of the digest¬ 
ive tract, santonin may be the drug of choice as it is not a gastro¬ 
intestinal irritant. Carbon tetrachlorid would be the next choice 
under these conditions, chenopodium being distinctly irritant. San¬ 
tonin should be given in doses of 0.5 to 1 grain daily, with an equal 
amount of calomel, for several days. Give early in the morning 
and do not feed dog for two to three hours after treatment. 
Hookworms. The carbon tetrachlorid treatment as outlined for 
aficarids. Worms pass for four days. In a series of experiments with 
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