Product Description
Science in Sport made the world’s first isotonic gel.
SiS GO Isotonic Energy Gels were key in changing the game! They effectively deliver an easily digestible and quick supply of carbohydrates.
The SiS Gel Difference
What does isotonic mean? These gels are equal in osmotic pressure (containing the same number of particles as body fluids) and are less likely to cause stomach distress.
We know taking in carbohydrates with diligence can prevent bonking and improve endurance...but sometimes the high sugar content of gels can cause GI distress. That’s where the isotonic formula comes into play.
These gels don’t require you to drink water with them, making them a great option if you tend to experience that full, sloshy feeling from drinking too much water with your gels or struggle with thick, syrupy gels. They also contain three different electrolytes to aid in the proper absorption of fuel and fluids.
The GO Isotonic Energy Gels are used by some of the world’s top cycling teams.
They are also Informed Sport Certified, so you know exactly what you’re getting is safe.
How to use SiS GO Isotonic Energy Gels
These energy gels are easy to consume on long training rides, interval days and races, as they don’t require water to be taken with them.
We recommend having one gel every 20-30 minutes during rides or runs that are over 90 minutes.
You can also have one 30 minutes before exercise to help with hydration and top off your fuel stores.
Trusted by pros. Ready for you.
- Gluten free
- Vegan
- Nut free
- Sport Tested: Informed Sport
- 0g
- 0g
- 0g
- 4mg
- 22g
- 0g
Nutrition Facts
Single Serving / Apple
Serving Size: 1 Gel
Serving Per Container: 1
| Amount Per Serving | ||
|---|---|---|
| Calories | 87 | |
| % Daily Value* | ||
| Total Fat 0g | 0% | |
| Saturated Fat 0g | 0% | |
| Trans Fat 0g | ** | |
| Cholesterol 0mg | 0% | |
| Sodium 4mg | 0% | |
| Total Carbohydrate 22g | 7% | |
| Dietary Fiber 0g | 0% | |
| Sugars 0g | ** | |
| Protein 0g | 0% | |
| Caffeine 0mg | ** | |
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
** Daily Value (DV) not established
Always Happy Promise: Don't like a product? Tell us within 30 days of receipt and we'll make it right and make you happy. Here at The Feed, we want you to love your experience and the sports nutrition products you purchase. If, for any reason, you are not satisfied with your nutrition specific purchase, tell us.
We do not accept returns on food items that have been opened, but we will issue a store credit if you are unsatisfied. In the event of a return, you must first contact us before sending back a return shipment.
Consumable products over $40 receive a 50% store credit. This includes specialty nutrition products such as ketones or supplements/vitamins.
SiS GO Isotonic Energy Gels FAQ's
Everything you need to know about SiS GO Isotonic Energy Gels.
Isotonic means the gel contains about the same concentration of particles as your body fluids, so it's absorbed quickly without pulling water into your gut. Practically, that means fast-available carbs and a much lower chance of the stomach distress that thicker, more concentrated gels can cause mid-effort.
No, and that's the main draw. Because the gel is already isotonic, you don't have to chase it with water the way you do with thick, syrupy gels, so you avoid that full, sloshy feeling. That makes them easy to take on the move when water isn't right there.
Take one every 20 to 30 minutes during rides or runs lasting longer than 90 minutes to keep your carb stores topped up. You can also take one about 30 minutes before you start to top off fuel and support hydration going into the effort.
This is the original base gel: same easy-digesting isotonic carb delivery, without added caffeine or the higher electrolyte load. Choose this one for steady fueling on most sessions, and step up to the caffeine or electrolyte versions when you specifically want a mental boost or extra sweat-loss replacement.
Yes. The GO Isotonic Energy Gels are Informed Sport Certified, meaning they're batch-tested against banned substances. That's why they're trusted by some of the world's top cycling teams and are safe for athletes competing under a governing body.