Can you tell how much I love the products made by First Endurance? It feels like they are my secret weapon! I've been taking Optygen HP and drinking Ultragen for the past 3 years! The Ultragen Cappuccino flavor is the best part of my day! I honestly look forward to drinking it as soon as I get back from a ride or a race. Just mix it with water and drink the most delicious recovery drink you'll ever have! The real winner here though is the EFS Electrolyte Sports Drink. Even though I'd been using First Endurance's other products for a few years I'd never used the EFS during training and racing. It was by happy accident that I finally used it. Last year while racing the Whiskey 50 in Arizona my friend Tricia D. offered to hand me a bottle at the feed station half way through. There was a mix up and she handed me a bottle I didn't recognize. It was blazing heat and I needed calories and water no matter what they were, I still had 25 miles left! I hesitantly took a sip out of this foreign bottle and that was the moment I tasted the most delicious, ice cold sports drink I'd ever imbibed. I heartily drank it then realized I needed to ration it until the next aid station. It was at that point in the race that I started climbing like a rock star and passed a couple girls (including the Olympic Bronze Medalist and the Canadian cx National Champion). Coincidence? I think not! I couldn't wait to find Tricia after the race and ask what was in the bottle! It was the Lemon-Lime EFS! So simple! I'd seen this product many times and had even had samples given to me, but I never knew just how great it was! NOW I KNOW. All of these products are highly researched and backed my many elite athletes as well as many doctors (including my chiropractor and MD). Give them a try and you'll know the efficacy of them!