Citricidal Grapefruit Seed Extract, 1 Oz. Liquid Concentrate

What the brand says

NutriBiotic Maximum GSE Liquid Concentrate provides the highest concentration of grapefruit seed extract available. Contains Citricidal (60% grapefruit seed extract and 40% vegetable glycerin), a compound derived from the seed and pulp of grapefruit. The grapefruit bioflavonoids (polyphenolics) are converted into an extremely potent compound.