Ester-C Bio helps strengthen your immunity, capillaries and connective tissues. Experience the protective benefits of potent antioxidants and enjoy better skin, joint, heart and immune health. Ester-C Bio can increase white blood cell levels four times more than ascorbic acid. It is also absorbed faster and more efficiently, maximising your immune defences. Vitamin C also helps alleviate stress, which may otherwise have impaired your immunity. The high concentration of vitamin C strengthens capillaries, helping reduce fragility. It also supports collagen production, providing antioxidant protection against UV damage. This buffered form of vitamin C has a neutral pH of 7.0, meaning it is gentle on your stomach, reducing the gastrointestinal discomfort caused by acidic forms of vitamin C.