"Berocca Boost gives you a kick whenever you feel you need one throughout the day. Simply dissolve one sugar-free effervescent tablet in water and then drink to unleash your positive energy! Berocca boost contains guarana, a natural source of caffeine to help with concentration, along with 13 essential vitamins and minerals, including multiple B vitamins: B1 and B2 to help release energy from food, B3 and B6 to reduce tiredness and B5 to support mental performance. The magnesium combats fatigue and provides an electrolyte balance, vitamin C boosts the immune system and calcium strengthens teeth and bones. One sugar-free, orange-flavoured tablet whenever you need that little extra helps you release your natural energy so that you can stay ru