VITAL HAVEN'S OPTIMISED FORMULA: Our complex blend combines 3 of the most essential elements for the body to boost your energy, reduce fatigue and strengthen your immune system. Vitamin C is well-known for reducing tiredness, while Iron helps in increasing concentration and prevent illness, and Zinc supports your main bodily functions. Vitamin C also helps the absorption of Iron, while Citrus Bioflavonoids increases the absorption of Vitamin C.