New Roots Herbal Grapefruit Seed Extract Liquid Concentrate - Used successfully to eliminate many types of internal and external infections caused from many types of parasites (single and multi-celled), viruses, bacteria and funguses. It naturally detoxifies, enhances and supports the immune system. It has been proven highly effective in numerous applications. Grapefruit seed extract contains high levels of Vitamin C and E, and bioflavonoids which have an antioxidant action and can neutralize free radicals that damage cells and cause numerous diseases.