Endurance efforts demand consistent energy delivery and electrolyte replacement that keeps pace with sweat loss and fuel demands. First Endurance's EFS Energy Drink Mix addresses both with a formula that delivers 30 grams of carbohydrates and 1175 milligrams of electrolytes per serving. The isotonic solution maintains a 7% osmolality that matches your body's internal chemistry, which means faster absorption without gastric distress. The redesigned formula increases carbohydrate content while refining the flavor profile to remain palatable during extended efforts when taste fatigue becomes a real obstacle.

The carbohydrate blend uses Multiple Transportable Carbohydrates in a 2:1 glucose to fructose ratio. This combination activates different intestinal transport mechanisms simultaneously, allowing your gut to process more fuel per hour than single-source formulas. Cane sugar and dextrose provide immediate energy while maltodextrin delivers sustained fuel as it breaks down gradually. The mix sits at 120 calories per scoop, which scales depending on how you concentrate the bottle.

EFS delivers clinically effective doses of all five electrolytes rather than focusing solely on sodium. Each serving provides 300 milligrams of sodium, 160 milligrams of potassium, 150 milligrams of magnesium, 100 milligrams of calcium, and 465 milligrams of chloride. These levels match research showing what prevents cramping during extended exertion. Magnesium appears as dimagnesium malate and calcium as dicalcium malate, chelated forms that reduce gastric irritation while improving absorption rates by 20 to 100 percent compared to non-chelated minerals. This electrolyte profile prevents cramping from depletion of any single mineral, not just sodium loss.... Read More