1st ENDURANCE ELECTROLYTE FUEL SYSTEM EFS combines three different carbohydrates with a complete electrolyte profile, which means you won't have to chug a sports drink and pop pills. The high-glycemic drink yields a 7% carbohydrate solution, which is ideal for absorption during hard efforts. Triathlete June 2008

First Endurance EFS Sports Drink With such notables as Levi Leipheimer on their roster it's clear that 1st Endurance makes solid "fuel system" product. The EFS tastes good and the gang at 1st Endurance claim it improves energy and endurance and prevents cramping. Scoop it up, drop it in, add some water and your off. Some serving details: 24g of carbs, 270mg of Sodium, 160mg of Potassium and 120mg of Vitamin C. You won't ride like Levi or, for that matter, ride along side him but you'll certainly be using the product he consumes and maybe, just maybe, you'll be able to power up the local ramp much easier. ROAD October 2006

Containing everything you need to maximize endurance, First Endurance's Electrolyte Fuel System energy drink uses electrolytes to ensure your body stays hydrated and so avoid cramping, amino acids to delay fatigue, plus 200 percent of the RDA for Vitamin C to help your immune system. And with EFS available in Lemon-Lime and Tangerine flavours, this particular energy drink is also a taste sensation in your bidon. Procycling June 2006

EFS: Not just another sports drink. Click here to read full review. PezCycling News

Tasty and effective. The most effective sports drink is the one you'll actually use, says Mark Zalewski, who's found this new power potion to be pleasantly palatable and potent. more >> Rating: Cycling News Tech review (Nov 28, 2004)

First Endurance continues to stay at the forefront of endurance nutrition by developing EFS, a new energy drink that combines the latest clinical research with the input and feedback from elite endurance athletes. EFS contains an ideal blend of simple and complex carbohydrates, amino acids, antioxidants and electrolytes to provide endurance athletes the nutrients they need to fuel working muscles and increase endurance during exercise. Cycle Sport (Jan, 2005)

Endurance. Energy. Electrolytes. The three E's of First Endurance's new EFS Sports Drink are what you need to keep you properly fuelled when training or racing. The addition of amino acids to EFS delay mental fatigue, and so increase endurance, complex carbohydrates deliver energy to the muscles, while the electrolytes help the body to absorb water. And lemon-lime and tangerine flavours ensure that this effective energy drink also taste good. Procycling (Jan, 2005)

First Endurance claims a first: a Lemon-lime and Tangerine flavored sports drink with five electrolytes: sodium, potassium, chloride, magnesium and calcium, three carb sources for quick and sustained energy and aminos that help delay fatigue. Triathlete Magazine (Feb, 2005)