, superior multivitamin formula for athletes, excels in magnesium b-complex & vitamin d, contributes to body’s immunity & performance supports muscle & metabolic function training hard can be taxing on your micronutrient status particularly where water soluble magnesium & b complex vitamins are concerned. these vital dietary components play a number of key roles in supporting performance particularly in the areas of energy production muscle protein synthesis & recovery. as a leader in sports nutrition nature’s best sport is one of the very few companies offering over 100% rda of magnesium (376 mg) plus 200-300% rda of all the b-vitamins in this premium grade multivitamin. the importance of magnesiumrecently it has become apparent that the intake of magnesium in the uk population is low where national diet & nutrition surveys have confirmed these nutritional concerns. many people eating mainly processed foods fast food & ready meals may not be achieving the recommended five portions of fruit & vegetables per day. if you couple the nutritional concerns of wide spread low magnesium intake with high intensity training amongst athletes you will understand why multi-guard sport makes perfect sense. supports immune function the high physical stresses of training can put a strain on the immune system. multi-guard sport offers comprehensive support for the immune system covering a number of key micronutrients including 250% rda for vitamin c (250 mg) 300% rda for vitamin d 3 (15 micrograms) & 150% rda for zinc (15 mg).