A strong choice for cyclists, runners and endurance athletes who want compact, easy-to-swallow carbohydrate that can be consumed without extra water.
SIS GO Isotonic Energy Gel is a pocket-sized carbohydrate top-up for endurance and high-intensity exercise. Each Apple-flavoured sachet supplies 22 g of carbohydrate from maltodextrin, giving you a simple way to keep energy intake moving during long rides, races and demanding training sessions.
The isotonic formula is designed to pass through the stomach quickly without requiring additional water to dilute it. That makes it useful when you want concentrated fuelling without adding more liquid to your bottles. The gel has a relatively fluid consistency compared with thicker, sticky gel formats, making it easy to tear open, squeeze and consume directly from the sachet.
For sessions over 90 minutes, use it as part of a broader fuelling plan, combining gels and other carbohydrate products to work towards 60–90 g of carbohydrate per hour. For shorter or particularly intense efforts, SIS recommends taking a gel before exercise; during longer sessions, spread your intake according to your personal tolerance and plan.
22 g carbohydrate per gel
A clearly measured carbohydrate portion makes it easier to plan your hourly fuelling for training and competition.
Isotonic, no-water format
Designed to be consumed directly from the sachet without needing additional water to dilute the gel.
Fluid consistency
The quick liquid gel is less sticky and easier to swallow than many thick gel formats.
Pocket-sized sachets
Light, compact packaging fits neatly in a jersey pocket, running belt or hydration pack.
Apple flavour
A straightforward fruit flavour for convenient fuelling during demanding exercise.
Flexible fuelling plan
Use 1–3 gels per hour, alongside other SIS GO products where needed, to help build towards a 60–90 g hourly carbohydrate target.
Added B vitamins
The formulation includes vitamins B1, B2 and B6 as part of its carbohydrate-focused sports nutrition formula.
General
Nutrition and formulation
Features
Usage guidance
GO Isotonic formula
The gel is formulated to match the body's natural fluid balance, helping it empty from the stomach quickly and deliver carbohydrate without needing extra water.
Single-source maltodextrin
Maltodextrin provides a straightforward carbohydrate source for convenient, reliable energy during demanding exercise.
Vitamin B1 and B2
These vitamins contribute to carbohydrate conversion, helping you make use of the gel's carbohydrate supply.
Vitamin B6
Vitamin B6 supports protein metabolism as part of the product's vitamin formulation.
SIS is a sports nutrition brand founded in 1992 and focused on fuelling endurance and high-intensity exercise. It is known for developing practical carbohydrate, hydration and recovery products for athletes.
SIS introduced what it describes as the world's first isotonic energy gel, designed to provide carbohydrate during exercise without requiring additional water. The GO isotonic gel range subsequently received the Queen's Award for Enterprise.
