+10 Grapefruit Seed Extract Vitamin C Advice. Nutribiotic, vegan gse grapefruit seed extract, liquid concentrate, 2 fl oz (59 ml) by nutribiotic. Web grapefruit is a source of vitamin c, fiber, potassium, pectin, and other nutrients.

Web phytochemicals analysis shows the phytochemicals of the seed extract and pulp are flavonoids, [13] [14] ascorbic acid (. 28% of the rdi potassium: Vegetable glycerine (67%) and grapefruit seed extract (33%).