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SiS GO Isotonic Energy Gel - 20 Pack


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gluten free
wheat free
dairy free
nut free
Delivery Details

UK Delivery Information*

  • Free Standard Delivery over £30
  • Standard UK Delivery (3-5 Working Days) - £3.99
  • UK Next Day Delivery (Restrictions Apply) - £4.99
  • SiS Premier - Unlimited Next Day Delivery for 1 Year - £9.99
Full Details & International Delivery


Product Information

The GO Isotonic Energy Gel was the world's first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise.

They are designed to be consumed without water, minimising the risk of being bloated that can sometimes occur with over-drinking.

Provides you with 22 grams of carbohydrate per gel.

Key Features

  • • 22 grams of rapidly absorbed carbohydrate per gel
  • • Convenient easy-to-take format
  • • Contents: 20 x 60ml gels per pack
  • • Flavoured Maltodextrin gel with added sweetener.


Winner of the Queens award for enterprise, this innovative product continues to be seen at the forefront by professional football players. Use pre-game and at half time to top-up carbohydrate stores.

Product Uses
Recommended Usage

Consume 1-3 gels per hour to deliver approximately 60 grams of carbohydrate and maximize carbohydrate utilization rates. Where hydration is also important, SiS GO Isotonic Gels can also be consumed with SiS GO Hydro or with SiS GO Electrolyte to ensure a combination of both energy and fluid delivery during exercise.

Directions for Use

Simply tear off the top of the packaging and consume - there is no need to mix with water.


Depleting your carbohydrate stores during exercise is one of the major causes of fatigue. Delivering additional carbohydrate during exercise is known to improve performance, race times and delay the onset of fatigue.

The Isotonic formula allows the gel to empty from the stomach quickly as no fluid needs to be drawn into your stomach to dilute the gel, providing fast energy. SiS GO Isotonic Energy Gels are highly practical and can easily be carried without the requirement for bulky bottles.

Informed Sport Registered

Our complete product range is developed using a world-class approach to banned substance testing, providing assurance for athletes. For more information on Informed Sport & our unique world class approach, click here.

Suitable For: Vegans, Vegetarians, Lactose free, Gluten Free, Wheat Free, Nut Free, Soya Free

Nutritional Info

For nutritional information about the individual flavours please contact customer service. Example below is for Orange flavour.

Typical ValuesPer 100mlPer Serving 60ml
Energy 613kj/144kcal 368kj/87kcal
Protein 0.0g 0.0g
Carbohydrate 36g 22g
of which sugars 1.0g 0.6g
Fat 0.1g 0.0g
of which saturates 0.0g 0.0g
Fibre 0.1g 0.0g
Salt 0.01g0.01g


Water, Maltodextrin (from Maize) (33%), Gelling Agents (Gellan Gum, Xanthan Gum), Natural Flavouring, Acidity Regulators (Citric Acid, Sodium Citrate), Preservatives (Sodium Benzoate, Potassium Sorbate), Sweetener (Acesulfame K), Sodium Chloride, Antioxidant (Ascorbic Acid)


GO Isotonic Gels - Lemon & Lime

GO Isotonic Gels - Orange

GO Isotonic Gels - Pineapple

GO Isotonic Gels - Tropical

GO Isotonic Gels - Blackcurrant

GO Isotonic Gels - Pink Grapefruit

GO Isotonic Gels - Apple

GO Isotonic Gels - Cherry

GO Isotonic Gels - Chocolate

GO Isotonic Gels - Vanilla

GO Isotonic Gels - Fruit Salad

Read More

When should I consume these?

Consume 1-3 gels per hour during endurance exercise to maximise carbohydrate utilisation rates. Alternatively, take one halfway through repeated high intensity exercise (such as football or rugby) to rapidly replenish glycogen stores.


When should I have these versus Electrolyte, Caffeine or L-Carnitine gels?

These should be consumed when you need a fast, convenient energy boost. During endurance exercise lasting over 90 minutes, these should be the main gels that are used throughout a race. Use in combination with other SiS Energy products e.g 1 x SiS GO Isotonic Energy Gel and 1 x 500ml SiS GO Electrolyte to hit 58 grams of carbohydrate (per hour).


Is this gel Isotonic?

Yes, this gel was the first truly isotonic energy gel.


Are these 'natural'?

SiS GO Isotonic gels contain natural flavourings.


Why are these better than regular foods, for example a banana?

SiS GO Isotonic Energy Gels are designed to be absorbed fast into your gut, providing fast energy. Some solid foods can take a while to digest as there's more fat and fibre in whole foods, which during exercise can cause feelings of bloating and discomfort.


Do these contain aspartame?

No, SiS Gels do not contain aspartame.


Will they fit in my cycle jersey pocket?

Yes! All SiS GO Gels are lightweight, compact and designed to fit in jersey pockets, cycle bags and waist packs. They are pressure tested, so don't worry about the packaging tearing or bursting during exercise.


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Verified Reviews

Rated 4.5 out of 5 based on 39 Reviews
Simon Butteriss

Good isotonic fuel, packaging good on the go


Didn't work for me - stomach cramps, low energy, almost didn't finish the marathon race.



Paulo Felix

Great flavour, easy to use, never ad stomach problems.

Darren Kerry

Gives you a boost just when you're going to need it

Mr. Simon Lynch

Excellent sport training product


Easy to absorb even in hot weather (25-30C).

Michael Meaney

Definitely give you that needed boost during a race. The thickness of the gel is such that I dont actually enjoy taking them but it’s benefits outweigh that.


Love the new vanilla flavour, tastes great and the gels go down easy without any stickiness left in the mouth afterwards.

Peter Brown

Really useful when out on the bike for a quick pick me up. Taste is always great and had no problems to date.


N/a. I can’t review this when I didn’t get any.

steve gibbons

Just spot on always gives you that bit extra

Paul Bartlett

Excellent gel with practical wrapper. Have seen other wrappers that keep the removed top connected so does not litter by accident. Please improve.


I can’t be without these gels.. you gotta use them, so you might as well get the ones that taste best, as well as doing the job.


Have used GO isotonic gels for many years now and have found them to be the best

Alan Jackson

Use Isotonic gels for Manchester marathon along with half marathon races and I never felt depleted in engery. Great product easy to use whilst running and no need for water

Eric Blatherwyke

Brilliant! tasty and effective. I spread them on my toast before going pout for a ride. Not really, but they really are good - so I'd heartily recommend.

michelle lovatt

Bought these for my son as got some at a reduced rate as in great north run and he really liked them and felt gave him a boost. Gels I’ve had in past have always made me feel sick but I tried and no sickness with these.

Simon Butteriss

As good taste as gels get, easy to consume on the go and not too sweet


Easy to absorb. Will use more.


Like the consistency of the gels, not overly sweet like normal gels.


Good taste and very effective.


Taste good and esdy to digest

Richard Briers

Easily digested ¬ too sweet

Ally Christie

Used this product while endurance training in Scottish Mountains. Kept my energy levels constant , and when I felt myself flagging I took a gel sachet which restored my energy levels so I could then think straight whilst training in low light and bad weather so kept alert while navigating through tough terrain.


I prefer Apple or Lemon/Lime flavour. But even this is very good during cycling


For a quick energy boost on the go, these really do work.

steve gibbons

Love these, always gives you that bit extra