Natures Aid Energy Effervescent combines B vitamins and Vitamin C with Guarana, Ginseng & Caffeine. The tablets are sugar free and use a natural citrus flavour. There are no artificial flavours or colours. Vitamins B1, B2, Niacin and B5 all contribute to normal energy production, whilst Niacin, Folate, B5, B6 & B12 all help to reduce tiredness and fatigue. Vitamin B5 also contributes to normal mental performance. Vitamin C contributes to the normal function of the immune system during and after intense physical exercise and also contributes to the reduction of tiredness and fatigue. Natures Aid Energy Effervescent therefore provides a great tasting, easy to use comprehensive support for people on the go.