Activise Brilliant B + Vitamin C Effervescent Tablet is a combination of vitamin B, Vitamin C, Calcium, Magnesium and Zinc which contribute to normal energy-yielding metabolism and immunity. Vitamin C along with Calcium supports maintenance of normal bones, teeth and strengthens immune system by giving cell protection from oxidative stress. In addition to this, B vitamins are especially important for the health of your nervous system and supports your metabolism. It nourishes and regenerates your nervous system that works hard 24/7 even while you are asleep. Zinc supports your immune system and muscles. Magnesium plays a role in metabolism and muscle health and helps manage sleep.