NutriBiotic Professional Strength CITRICIDAL Liquid Concentrate is a natural quaternary compound synthesized from the seed and pulp of organically grown grapefruit. The grapefruit bio-flavonoids (polyphenolics) are converted into an extremely potent compound that has been proven highly effective in numerous applications. The botanical extractives in this formula have been used by doctors nationwide to offer additional support to individuals being treated for systemic infections and intestinal parasites. Liquid Concentrate provides the highest available concentration of pure grapefruit extract. Each bottle Approximately contains 1,000 drops. Numerous uses include oral consumption for dealing with unwanted, indicated conditions, external use for the skin and scalp, and myriad household uses.