Sunshine Nutrition's B-complex effervescent tablets contain B vitamins that have a direct impact on energy levels, brain function, and cell metabolism. It also help prevent infections and help support or promote cell health, growth of red blood cells and support metabolism while promoting energy levels. It also helps in maintenance of overall health. The effervescent format of this supplement offers fast acting absorption in a sparkling liquid form, offering both refreshment and rehydration and the most effective absorption method possible. Sunshine Nutrition's Immune Support Effervescent tablets are also Sugar Free.