Vitamin C + D3 and Zinc are well known for their role in boosting the immune system. Vitamin C is essential for reducing tiredness and fatigue, as the body cannot produce it naturally. Taking a supplement is an effective way to boost your intake. Vitamin D, also known as the sunshine vitamin, has mood-boosting properties. Zinc is necessary for the production of white blood cells, our immune army, and is a critical nutrient for winter health and defence against flu and viruses. This product is gluten-free, lactose-free, and vegan-friendly. It contains a 33-day supply and is orange-flavored.