this is without a doubt one of the strongest vitamin b formula available in the uk & as such is recommended for periods of recovery rehabilitation & convalescence from injury or illness. sportspeople could use this b-100 complex during periods of heavy or intense training or after a key race or sports event when the immune system may feel compromised & the body will be working very hard to repair & recover.high carbohydrate diets may fall short of providing the optimum levels of b vitamins required for releasing energy from food & so if you are wondering if a b complex is what you need then this product will leave you in no doubt. uk’s strongest safe for short term use highest quality pharmaceutical grade vitamins uk made gmp standards one-a-day coated tablets