First Endurance EFS Energy and Endurance Drink Mix

With First Endurance's EFS Energy and Endurance Drink Mix, you don't need to worry about cramping or dehydration during intense training. EFS's formula delivers over 1,000mg of all five electrolytes and is fortified with clinical doses of important amino acids to boost glycogen re synthesis and delay fatigue. Also, three different high glycemic carbohydrate sources provide you with quick energy and increase stamina.