Citroplus 800 Organic Grapefruit Seed Extract Liquid can be taken to support your immune system and promote your overall well-being. The extract is derived from the seeds and peels of grapefruits, containing secondary plant compounds such as flavonoids (e.g., naringin). Standardized to a bioflavonoid content of 800 mg per 100 ml, it serves numerous metabolic processes in your body, boosts your natural defenses, and acts as an antioxidant free radical scavenger. The alcohol-free carrier liquid consists of vegetable glycerin and a small amount of water.