Ester-CŪ is a patented ingredient that provides powerful immune system support. It is quickly absorbed and gentle on your stomach.

Ester-CŪ also contains C-SorbŪ. Ester-CŪ, along with C-SorbŪ and naturally occurring metabolites, works synergistically to enhance the absorption and retention of Vitamin C in your body.

Ester-CŪ is non-acidic. That means it's stomach-friendly. Ester-CŪ is gentle on your stomach so you can feel comfortable taking it every day.

A recent clinical study showed that Ester-CŪ increased vitamin C levels in the body for up to 24 hours. White blood cell levels of Vitamin C were elevated in subjects receiving Ester-C when measured 24 hours after initial dose. The presence of key metabolites such as threonate has been shown to be responsible for this increased level and retention of Vitamin C by the cells.

Ester-CŪ provides your body with the antioxident protection it needs to help keep you healthy and strong during the times of seasonal change and other situations that challenge your immune system.

Free of yeast, wheat, milk or milk derivatives, lactose, sugar, preservatives, soy, artificial color or flavor, and less than 5 mg of sodium per serving.

Serving Size: 1 Tablet

Amount per Serving: Vitamin C-500 mg-833% DV, Calcium-55 mg-6%DV NatureSmart