Citricidal Liquid Concentrate (GSE), 1 fl oz by Nutribiotic is now available at Nature’s Fix. Suitable for vegetarians. Maintaining a healthy immune system along with bacterial and fungal balance can be challenging. Supplementing with Maximum GSE Citricidal is a quick and easy way to support healthy immune performance and maintain digestive health. 100% Grapefruit Seed Extract. Helps maintain a healthy gut. Promotes bacterial balance. Supports healthy immune function. Citricidal Liquid Concentrate contains a potent concentration of grapefruit seed extract. Offers a full spectrum of flavonoids. Highest available concentration of grapefruit seed extract. Powerful antibiotic capacity. Powerful antiviral and antifungal capacity. Can help prevent colds. May help to address persistent antibiotic resistant UTIs. Can help fight parasites and candida. 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 that can be easily taken diluted in water. Suggested use is 1 drop in a small amount of water.