Helps support your immune system. Crafted Blend: Vitamin C & D + zinc. RB - Health - Hygiene - Home. A crafted blend you can trust. 2 Gummies = High in antioxidants (vitamins C & E). No artificial sweeteners. Gelatin free. No color added. With zinc. No. 1 immune support gummy brand (Based on unit sales L52W through 11/2/19). rb-Health. Hygiene. Home.