One medical study, using large amounts of gentian violet in rats, found that it could cause cancer.
The piercing site is prepared and cleaned, and the piercer will use a single use surgical marker or a small dot of Gentian violet antiseptic to mark the piercing's placement.
Although cancer from gentian violet has not been observed in humans, some doctors choose not to recommend it for this reason.
The piercing site is cleaned and marked with Gentian violet or a single use, disposable piercing marker.
This can be done with a single use surgical marker or Gentian violet ink applied with a toothpick.
Centaury (Erythraea) - Pretty dwarf biennials belonging to the Gentian family.
7-trihydroxyxanthone, is found in the form of its methyl ether (gentisin) in gentian root; it is obtained synthetically by condensing phloroglucin with hydroquinone carboxylic acid.
When the secretion of gastric juice is deficient it may be excited by gastric tonics, such as ten grains of bicarbonate of soda and a drachm of compound tincture of gentian in water shortly before meals, and may be supplemented by the administration of pepsin and hydrochloric acid after meals.
Those which act upon the alimentary canal: Simple bitters such as quassia wood, columbo root, taraxacum, gentian, chiretta, and many others, irritate gently the mucous membrane of the stomach and bowels, and by increasing the secretions improve the appetite and digestion.
The bitterness is imparted by such substances as bitter orange rind, gentian, rhubarb, quassia, cascarilla, angostura, quinine and cinchona.