A Canadian nurse developed it in 1922 and used it to treat many cancer patients. Essiac is claimed to strengthen the immune system, relieve pain, and shrink cancerous tumors. Despite many personal reports of health benefits from Essiac, there are no scientific studies to support its use. Essiac appears to be safe to use. It is available in several forms, based on different recipes, from competing providers.
Prices vary widely.
Be sure to obtain a complete list of ingredients.