Packed withEster-C, B-vitamins, zinc and more, this effervescent provides 24-hour immune support, helping to recharge body and mind. Ester-C vitamin C stays in the body longer than standard vitamin C forms and is able to provide 24-hour immune support. Meanwhile, B vitamins are water-soluble nutrients that play a key role in maintaining nervous system health, psychological wellbeing and energy production as well as supporting a healthy immune system function. Finally, zinc is an important trace mineral that supports a healthy immune system. It maintains the skin barrier and ensures development and function of immune cells involved in the non-specific immune response.