These effervescent tablets give your body an instant boost of Vitamin C plus Zinc to boost your immune system. Perfect for anyone looking to stay healthy during cold weather and fluctuations. - Vitamin C helps boost collagen production, which contributes to healthy skin, teeth and bones. - Zinc plays an important role in boosting the immune system and helps speed up recovery. - Easy to use; simply dissolve the tablet in a glass of water for a refreshing drink that can be consumed daily. - Each box contains 20 effervescent tablets, making them ideal for regular use.