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  • Science in Sport - GO Isotonic Gels - Lemon And Lime
  • Science in Sport - GO Isotonic Gels - Apple
  • Science in Sport - GO Isotonic Gels - Tropical
  • Science in Sport - GO Isotonic Gels - Orange

Current Color

  • Science in Sport - GO Isotonic Gels - Lemon And Lime
  • Science in Sport - GO Isotonic Gels - Apple
  • Science in Sport - GO Isotonic Gels - Tropical
  • Science in Sport - GO Isotonic Gels - Orange

Science in Sport GO Isotonic Gels

$8.99 - $44.79

Free 2-Day shipping on orders over $50*

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  • Select options
    • Lemon And Lime, 60ml 6 pack
    • Apple, 60ml 6 pack
    • Apple, 60ml 30 pack
    • Tropical, 60ml 6 pack
    • Tropical, 60ml 30 pack
    • Orange, 60ml 6 pack
    • Orange, 60ml 30 pack

    12 Reviews


    Changing the game.

    We've all been there, 56 miles into a 64-mile slugfest, chasing breaks and shattering echelons in search of a prestigious end-of-season county line sprint for glory. And then that slight edge of fatigue starts to creep in as we weigh the chances of powering to the line without bonking versus dealing with the thick, sticky, stomach-turning taste of the little packet of goo tucked in our back pocket. We've paid the price for pushing through more than once, running out of gas at 200 meters to go and helplessly watching the group fly by without any watts to respond. That, however, all changes with Science in Sport's GO Isotonic Gels.

    The key differentiator that sets these gels apart from the masses of others on the market is in the name. They're isotonic, which isn't just a fancy way of saying they're refreshing. It means they're designed with the same osmotic pressure already present in your body, so they deliver their 22 grams of carbohydrates quickly without requiring an extra-large helping of water in your already overtaxed stomach. How this plays out in the real world is a slightly larger volume per packet and a thinner consistency. The Isotonic Gels go down easier for a much-needed energy boost without any sticky residue or finicky bottle handling to distract you from the task at hand.

    For the racers out there, the GO Isotonic Gels also offer some peace of mind from the whirling chatter of tainted supplements and suspicious substances. These gels are certified through the Informed Sport Evolved Certification program, undergoing vigorous testing through a third party, world-class anti-doping lab that analyzes pre-production raw ingredients and post-production product. This scrutiny also includes site audits to ensure that the gels contain quality ingredients and are free from prohibited substances—and that means everything if you're serious about riding clean.

    The Science in Sport GO Isotonic Gels are available in a variety of flavors to suit your tastes, with a light flavor profile that won't overpower in the saddle. They're also vegan, gluten-free, lactose-free, wheat-free, and nut-free.

    • Isotonic gels deliver quick energy
    • Absorbs quickly without needing additional water
    • Thinner consistency goes down cleanly
    • Light flavor profile doesn't overpower
    • Certified to be free of prohibited substances
    • Gluten-free, lactose-free, wheat-free, and nut-free
    • Item #SIS0001

    Tech Specs

    [60ml packet] 87
    Servings Per Container
    6, 30
    Recommended Use

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    My new favorite gel

    • Familiarity: I've used it several times

    This gel is great, I love that it's isotonic so I don't have to worry about increasing my water intake during exercise. I purchased the tropical flavor and it tastes great!

    Goes Down Easy

    • Familiarity: I've used it several times

    After hearing great reviews, I picked up some of these. As others have said, they taste good & go down easy. My favorite flavors are Tropical & Apple. While I like how easy they are to consume, I wish they had more nutrients for those long, hot summer days. Because of this, I'll be sticking with other denser gels.

    Fill your pockets with these

      Not really anything I can add that hasn't been said. A pleasant, if somewhat mild (in a great way) gel that goes down easily and is easy on the stomach, to boot. No more cloyingly sweet gels that are more like glue when they get in your mouth and then having to drain half a bottle just to chase it down. A larger package is a small price to pay for the convenience and benefits of an isotonic gel. Is there room for improvement? Sure...a key lime pie flavor in the summer and maybe pumpkin spice in the winter would be nice. #firstworldproblems

      definite improvement

      • Familiarity: I've used it once or twice and have initial impressions

      SIS doesn't really do anything for you that others don't already do. But with that said, it works without making my stomach feel queasy or without a sticky gel stuck in your throat. Very easy to get down. Yes, the package is a little larger but not to a degree that will really make a difference. This product is a definite improvement over what is currently out there.

      Fantastic Gel

      • Familiarity: I've put it through the wringer

      I can't overstate the ease and benefits of the SiS Go Gels. One of the wonderful features of this gel is the ease of getting it out of the package. No more wasting time with wringing and manipulating a very viscous gel package. It's very fast to open and eat so you can get back in the game and not lose that draft. It's also decreased my indigestion during rides, and high high intensities. The taste is great (tropical and apple are my favorites). It does take up a bit more pocket space since the gels have so much more fluid than competitors, but honestly, it's oddly empowering to put them in the jersey pockets...almost like you aware you are taking something very valuable with you on the ride. I highly recommend giving these Go gels a try!

      really good product

        I tested many gels and have found this one as the best in range. It tastes good and adds energy for another 30-60 mins. Especially it feels when you're truly exhausted this gel literally wakes you up. And it doesn't need any water. The only small downside this gel takes more space than an average gel.

        The best I've ever tried

        • Familiarity: I've used it several times

        This stuff is the bomb! The first time you use it you will think the consistency to be somewhat curious. It is kind of like a watery gel. I much prefer this consistency as it goes down easily and you don't have to have a water bottle chaser to get the normal gel stickiness out of your mouth. It also isn't as sickeningly sweet as most other gels. I've tried all of the flavors and like them all.


          Honestly. I have tried almost every gel on the market and settled on a couple and was pretty happy overall but was recommend to try these. Well.....thats it, I'll only be stocking pockets with SIS gels going forward.

          Only downside at all is they are a bit bigger than a typical gel but the taste and lack of sticky goo everywhere more than makes up for it. Couldn't be more happy with these overall.

          Delicious energy.

          • Familiarity: I've put it through the wringer

          Race nutrition is a finicky thing, and for me, gels have traditionally been one of those "have to deal with" things, what with banking on the peloton to hold off attacks long enough to grab some water and trying to ignore the gross, sticky aftertaste for the next few miles. Not so with these gels. The consistency does take a little getting used to if you're riding at a social pace, but it's amazing when you're at tempo or higher and need to get some calories. They're a little bigger than other gels, but the thinner consistency that volume allows is SO MUCH easier to take on no matter what intensity you're riding. And it means you don't need to add water for it to absorb. All in all, at least for me, these gels make for a happier stomach while riding and lets me keep on top of my ride nutrition without all the side effects found with some of the other options out there.

          Delicious energy.

          marmboy - Thanks! They'r super comfy - made by Smartwool, and I got them here on Backcountry. It doesn't look like we have that specific pattern in stock anymore, but there are still a lot of fun patterns on the site.