Swisse High Strength Vitamin C Effervescent is a premium quality, great tasting effervescent formula containing vitamin C to support immune function, help reduce the severity and duration of cold symptoms, maintain skin health and provide healthy antioxidant activity. Immune Function: Vitamin C supports a healthy immune system. Cold Symptoms: Vitamin C helps to reduce the duration and severity of common cold symptoms. Skin Health: Vitamin C plays an integral role in the formation and structure of collagen and elastin, which are essential for the maintenance of healthy, supple skin. Antioxidant Support: Vitamin C provides antioxidant support to help protect against potential free radical damage. Iron Absorption: Vitamin C facilitates the absorption of iron. Swisse High Strength Vitamin C effervescent tablets have been formulated based on scientific evidence to conveniently support your health and wellbeing and are a great tasting alternative for those who have difficulty swallowing large tablets or capsules.