It is a different form of the vitamin, as it is not found in the structure of ascorbic acid but as calcium ascorbate, which results in it being absorbed and remaining in the body to a much greater degree. Also, this form is not acidic at all and is suitable for those who have a hypersensitive gastrointestinal tract.

The balanced compositions ESTERIFIED Vitamin C 1000mg by HealthAid, are enriched with the bioflavonoids Hesperidine, Routine & Quercetin, which further enhance its absorption, while also contributing to the elasticity of blood vessels and extra fruit without rosemary, rosehip, C cause irritation or upset stomach. Suitable for cases of strengthening the immune system, while they are especially useful in the elderly, who show reduced absorption of nutrients, without burdening the stomach.