The natural methods of drainage or elimination are through the intestines, kidneys and skin. Hepatic function should be envisaged with these centres in mind. Some remedies like Phosphorous achieve elimination via the bloodstream and kidneys; others, like Sulphur work through the biliary passages and the intestines. This article mainly discusses homeopathic drugs that act on the liver, but there is some discussion of kidney drainage.

Solidago acts by opening the renal barrier and, secondly the intestinal one. Solidago is the best remedy to use in preventing aggravations such as may be produced by Sulphur, Nux vomica and Lycopodium. It can be prescribed for a week before the basic or constitutional remedy.

Berberis has an elective action on the kidneys, bladder, liver and digestive tract. Other remedies include Carduus marianus, Hydrastis, Myrica and Chelidonium.