Here's what other sites are saying:
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.
First Endurance EFS sport drink helps you stay hydrated and avoid cramping to maximize your performance during exercise. EFS drink contains the highest level of electrolytes per serving available; contains 1,160mg of calcium, magnesium, chloride, sodium and potassium per serving. Also contains 700mg of malic acid per serving, which can stimulate oxygen consumption. AjiPure amino acid blend is 99 - 100% pure for fast and complete absorption. Nutrition facts displayed here and on packaging may differ; information on packaging reflects actual contents. *Discount will be applied when you check out; offer not valid for sale-price items ending in $._3 or $._9.
Where to Buy
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First Endurance EFS Liquid Shot
$30 - $35
First Endurance EFS Ultragen Recovery Series
Skratch Labs Exercise Hydration Mix
Hammer Nutrition Perpetuem
$3 - $30
Hammer Nutrition Recoverite Drink Mix
$4 - $34
Vitalyte Electrolyte Replacement Drink Mix
$1 - $19