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Directions

For best results, use OptygenHP during all intense training blocks. Optygen should be used consistently for many months. If you start taking Optygen a week before a race, benefits will be minimal. Use 1st Endurance's Ultragen for optimal recovery.

See more ","brand":{"@type":"Brand","name":"1st endurance"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"4.2"}},{"@type":"Product","name":"First Endurance Electrolyte Fuel System EFS Drink - 1 Case of SIX Canisters (Grape)","url":"/product/42871942","image":"https://m.media-amazon.com/images/I/41OSzq-807L.jpg","offers":{"@type":"Offer","price":0,"priceCurrency":"NIO","availability":"https://schema.org/OutOfStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"\n\n\n\n\n\n\n\n\n\n\n\n\n

First Endurance Electrolyte Fuel System EFS Drink - 1 Case of Six Canisters (Grape)\n\n

","aggregateRating":{"@type":"AggregateRating","ratingValue":"3.1"},"review":[{"@type":"Review","author":{"@type":"Person","name":"A***S"},"reviewBody":"I drink EFS almost daily, and had been getting it from a gym. It was cheaper through Amazon, so I thought I would give it a try. However, I bought 6 canisters, and instead of the powder being all white (as it is when purchased from the gym), it was white with brown in it and caused the water to turn brown when added to it. I was concerned about what actually was in the product and threw all 6 away. (All were prior to expiration dates). I have since purchased online from the First Endurance website and the product that arrived from them had pure white powder (as was the product purchased from a gym). I brought my concern to the attention of this website (BikeSomeWhere--Amazon Marketplace), however they state that \"this is the way this flavor comes. We apologize for any inconvenience as a result of this.\" I obviously am not satisfied with that reply. I would HIGHLY discourage purchasing this product from this company as I do not trust that the product is genuine or that it hasn't been tampered with or spoiled. (However, I do love this product and would very much recommend purchasing from the First Endurance company or a gym!)","reviewRating":{"@type":"Rating","ratingValue":"1.0","bestRating":5}},{"@type":"Review","author":{"@type":"Person","name":"S***E"},"reviewBody":"my kids live off this stuff while training for football, track and soccer. Its great and keeps then going","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}}]},{"@type":"Product","name":"First Endurance Ultragen Recovery Drink (15 servings)","url":"/product/39374939","image":"https://images-na.ssl-images-amazon.com/images/I/517CukpObHL.jpg","offers":{"@type":"Offer","price":675539,"priceCurrency":"NIO","availability":"https://schema.org/OutOfStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"Ultragen is the most advanced recovery formulation ever developed. Ultragen's breakthrough technology is designed to work synergistically to provide the right nutrients to the right place at the right time during the 30-minute 'Window of Opportunity' following exercise so you can recover faster than ever before. Each serving of Ultragen delivers the levels of nutrients that have been shown in clinical research to maximize recovery and give you an extra edge over the competition.



*","brand":{"@type":"Brand","name":"1st endurance"}},{"@type":"Product","name":"EFS - Electrolyte Fuel System Tart Lemon-Lime 1.8 lbs by 1st Endurance","url":"/product/35067471","image":"http://ecx.images-amazon.com/images/I/51OPD%2BHgxwL.jpg","offers":{"@type":"Offer","price":928647,"priceCurrency":"NIO","availability":"https://schema.org/InStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"Brand New","brand":{"@type":"Brand","name":"1st endurance"}},{"@type":"Product","name":"First Endurance EFS Liquid Energy Shot Vanilla 5oz","url":"/product/27740541","image":"https://m.media-amazon.com/images/I/41j8GfMh9SL.jpg","offers":{"@type":"Offer","price":79047,"priceCurrency":"NIO","availability":"https://schema.org/OutOfStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"\n

EFS LIQUID SHOT SUPER-CHARGED ENDURANCE FUEL EFS Liquid Shots are designed to be used in place of gels that can slow down absorption and digestion. Features include a 400-calorie supercharged endurance formula that boasts over 1500mg of electrolytes, 1000mg of amino acids and 100 grams of carbohydrates. KEY BENEFITS ✓ Quick & Long-Lasting Energy for Optimal Performance ✓ 
 Prevents Cramping & Dehydration ✓ Contains No Gelling Agents, Easy to Absorb & Digest DON’T CALL IT A GEL Unlike the ‘gels’ that are on the market, EFS Liquid Shots don’t contain any gelling agents, which can slow down absorption and digestion. Features include our exclusive 400-calorie supercharged endurance formula that boasts over 1500mg electrolytes, 1000mg amino acids and 100 grams of simple & complex carbohydrates, all in clinically effective doses. Plus, EFS Liquid Shots don’t contain Vitamin C because the latest research shows that Vitamin C can have a negative effect on endurance and performance when consumed during exercise. The Liquid Shot flask has a re-sealable pop-top that allows you to take as little or as much as you want. They’re also refillable and 100% recyclable, and available in a 32-ounce refill.

","brand":{"@type":"Brand","name":"first endurance"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"5.0"},"review":[{"@type":"Review","author":{"@type":"Person","name":"R***9"},"reviewBody":"Arrived much faster than anticipated. Very good product - I use it on bike rides that are longer than 3 hours and it definitely helps in replenishing your energy and get you to the finish line, not to mention that the taste of the vanilla Liquid Shot is amazing.","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}},{"@type":"Review","author":{"@type":"Person","name":"S***M"},"reviewBody":"This has been great for long, strenuous runs (marathon training type runs).","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}},{"@type":"Review","author":{"@type":"Person","name":"H***!"},"reviewBody":"Only electrolyte that my stomach can handle !!","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}}]},{"@type":"Product","name":"First Endurance EFS Liquid Shot - Case of 6 Flasks (Wild Berry)","url":"/product/26396119","image":"http://ecx.images-amazon.com/images/I/31iznGLPfpL.jpg","offers":{"@type":"Offer","price":132587,"priceCurrency":"NIO","availability":"https://schema.org/InStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"First Endurance is proud to introduce the highly anticipated EFS Liquid Shot at Interbike on September 23, 2008. The EFS Liquid Shot has been in development for two years and is the result of collaboration between First Endurance athletes, customers, retailers, and the First Endurance Research and Development team. UNLIKE ANYTHING ELSE \"The EFS Liquid Shot is actually a long-time coming\" said Robert Kunz, VP of Research & Development at First Endurance. \"We've been researching the gel market for a six years now. The dilemma for us, though, was that our sponsored athletes wanted us to develop other products first. Since First Endurance started back in 2002 we've been looking at the gel delivery system, knowing we'd eventually develop our own version. This year, we had an overwhelming number of requests from our athletes, retailers and customers to develop a special 'gel'. Because we had been looking at gels for a quite a while and our athletes have been giving us tons of great input and feedback, our research and development team had accumulated a lot valuable knowledge and were able to develop something really unique. Not just a \"me too\" product, but a dramatic step up from a formula and packaging standpoint.\"","brand":{"@type":"Brand","name":"1st endurance"}},{"@type":"Product","name":"First Endurance EFS Energy and Endurance Drink Mix Orange, One Size","url":"/product/19898703","image":"http://ecx.images-amazon.com/images/I/51Scr34DHYL.jpg","offers":{"@type":"Offer","price":455350,"priceCurrency":"NIO","availability":"https://schema.org/InStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"EFS drinks provide everything you need to maximize endurance and performance during exercise. You'll notice the difference right away too. With the latest amino acid technology, superior mineral bioavailability and the addition of Malic Acid, EFS drinks refuel working muscles faster than ever before. Plus they taste great, not chalky or overpoweringly sweet. And with the highest electrolyte content available (1160mg of all 5 electrolytes/serving), there's no need to carry those extra electrolyte","brand":{"@type":"Brand","name":"1st endurance"}},{"@type":"Product","name":"First Endurance Electrolyte EFS Liquid Shot - Single Shot (Kona-Mocha)","url":"/product/19580084","image":"http://ecx.images-amazon.com/images/I/31E4WTeyZ%2BL.jpg","offers":{"@type":"Offer","price":122007,"priceCurrency":"NIO","availability":"https://schema.org/InStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"First Endurance is proud to introduce the highly anticipated EFS Liquid Shot at Interbike on September 23, 2008. The EFS Liquid Shot has been in development for two years and is the result of collaboration between First Endurance athletes, customers, retailers, and the First Endurance Research and Development team. UNLIKE ANYTHING ELSE \"The EFS Liquid Shot is actually a long-time coming\" said Robert Kunz, VP of Research & Development at First Endurance. \"We've been researching the gel market for a six years now. The dilemma for us, though, was that our sponsored athletes wanted us to develop other products first. Since First Endurance started back in 2002 we've been looking at the gel delivery system, knowing we'd eventually develop our own version. This year, we had an overwhelming number of requests from our athletes, retailers and customers to develop a special 'gel'. Because we had been looking at gels for a quite a while and our athletes have been giving us tons of great input and feedback, our research and development team had accumulated a lot valuable knowledge and were able to develop something really unique. Not just a \"me too\" product, but a dramatic step up from a formula and packaging standpoint.\"","brand":{"@type":"Brand","name":"1st endurance"}},{"@type":"Product","name":"2015 First Endurance Optygen HP with FREE 90 Capsule Bottle of Pre Race SR Prototype","url":"/product/18007907","image":"https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/71x66pn6sdL.jpg","offers":{"@type":"Offer","price":79047,"priceCurrency":"NIO","availability":"https://schema.org/OutOfStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"","brand":{"@type":"Brand","name":"1st endurance"},"review":[{"@type":"Review","author":{"@type":"Person","name":"R***I"},"reviewBody":"Helps me get more out of my training sessions in outrigger canoe paddling. More energy","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}}]},{"@type":"Product","name":"First Endurance PreRace Caps One Color, One Size - Men's","url":"/product/11632672","image":"https://m.media-amazon.com/images/I/71pyQYDy7sL.jpg","offers":{"@type":"Offer","price":0,"priceCurrency":"NIO","availability":"https://schema.org/OutOfStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"\n

First Endurance PreRace Caps One Color, One Size - Men's

","brand":{"@type":"Brand","name":"1st endurance"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"5.0"},"review":[{"@type":"Review","author":{"@type":"Person","name":"T***R"},"reviewBody":"I got this product to help me have sustained energy during some very long rides this past season. I used it during LOTOJA, a 206 mile race, and it totally helped me keep my energy level high during the entire 11 hours of riding. I will definitely continue use of PreRace in the next season as I plan to do several more races.","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}}]},{"@type":"Product","name":"Optygen High Performance","url":"/product/9497609","image":"http://ecx.images-amazon.com/images/I/41R80tP9hzL.jpg","offers":{"@type":"Offer","price":759235,"priceCurrency":"NIO","availability":"https://schema.org/InStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"Optygen High Performance","brand":{"@type":"Brand","name":"1st endurance"}},{"@type":"Product","name":"1st Endurance EFS Liquid Shot, Wild Berry, Box 6","url":"/product/7841230","image":"https://m.media-amazon.com/images/I/41PesfZEBXL.jpg","offers":{"@type":"Offer","price":793700,"priceCurrency":"NIO","availability":"https://schema.org/InStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"\n

First Endurance EFS LIQUID SHOT WILDBERRY FLASK-TRAY OF 6 Nutrition Gel

","brand":{"@type":"Brand","name":"first endurance"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"5.0"},"review":[{"@type":"Review","author":{"@type":"Person","name":"T***N"},"reviewBody":"I love the product, love the taste, love the handy little hand help bottles but boy it’s expensive.","reviewRating":{"@type":"Rating","ratingValue":"5.0","bestRating":5}}]},{"@type":"Product","name":"First Endurance Electrolyte EFS Liquid Shot - Single Shot (Vanilla)","url":"/product/7839886","image":"https://m.media-amazon.com/images/I/316yFw6CNWL.jpg","offers":{"@type":"Offer","price":79047,"priceCurrency":"NIO","availability":"https://schema.org/OutOfStock","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","returnPolicyCountry":"ni","applicableCountry":["ni"],"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":14,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn","refundType":"https://schema.org/StoreCreditRefund"}},"description":"\n

First Endurance Electrolyte EFS Liquid Shot - Single Shot (Vanilla)

","brand":{"@type":"Brand","name":"1st endurance"},"aggregateRating":{"@type":"AggregateRating","ratingValue":"5.0"}}]}}