Description High-dose effervescent tablet with 1000 mg vitamin C, vitamin D3 and zinc. Vitamin C, vitamin D and zinc contribute to the normal function of the immune system. Ingredients: Vitamin C (1000 mg), Vitamin D3 (25 mcg/1000 IU), Zinc (15 mg, 150% NRV). Usage: Dissolve one tablet in water daily. Target Markets: Pharmacies, health stores worldwide. Request a Quote