The vermifuge is given in the early morning, and should consist of the liquid extract of felix mas, male fern, one drachm in emulsion or in capsules to be followed in half an hour by a calomel purgative.
In the treatment of a case where the parasite is already present, for two days previous to the employment of a vermifuge a light diet should be given and the bowels moved by a purgative.
At one time they were supposed to be useful as a vermifuge.
The rue and wormwood are in general use as domestic medicines - the former for rheumatism and neuralgia; the latter in fever, debility and dyspepsia, as well as for a vermifuge.
The powdered bark is sometimes given to horses as a vermifuge; it possesses likewise tonic and febrifugal properties, containing a considerable amount of salicin.