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Mixed Isotonic 20 Gel Pack

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The GO Isotonic Gel was the worlds first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise. GO Isotonic Gels are designed to be consumed without water meaning that you can ensure rapid delivery of carbohydrate to your muscles.


  • 4 x GO Isotonic Energy Orange
  • 4 x GO Isotonic Energy Tropical
  • 4 x GO Isotonic Energy Blackcurrant
  • 4 x GO Isotonic Energy Lemon & Lime
  • 4 x GO Isotonic Energy Apple
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  • Free Standard Delivery over £30
  • Standard UK Delivery (3-5 Working Days) - £3.99
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Product Information

About GO Isotonic Gels

The GO Isotonic Gel was the worlds first isotonic gel effectively delivering an easily digestible and quick supply of carbohydrate for energy during exercise. GO Isotonic Gels are designed to be consumed without water meaning that you can ensure rapid delivery of carbohydrate to your muscles without the feelings of being bloated that can sometimes occur with over-drinking.

Why should I take this gel?

Depleting your carbohydrate stores during exercise is one of the major causes of fatigue. In addition to ensuring optimal carbohydrate stores before exercise, delivering additional carbohydrate during exercise is known to improve performance, race times and delay the onset of fatigue. As such, GO Isotonic Gels represent a highly practical solution to your in-training and competition fuelling strategy by providing you with a quick supply of 22 grams of carbohydrate per gel. Gels can easily be carried in your pocket or your race belt without the requirement for bulky bottles.

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, GO Isotonic Gels can also be consumed with GO Hydro or with GO Electrolyte to ensure a combination of both energy and fluid delivery during exercise.

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Nutritional Info

For nutitional information about the individual products within this pack, please see the relevant product page for each product. Example below is for Pineapple 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) 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)

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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 4.6 out of 5 based on 67 Reviews
Stephan Mehr

Excellent product and highly recommended

sandy miller

The first gels I have used that have been easy to consume without water.

Anthony York

Does what it says on the box

Chloe Singer

This is probably just me.... But I didn't like the consistency of the gels and they really upset my stomach on long runs. The flavours were a bit sickly too. I love the concept of isotonic gels, but they just didn't suit me

Rick Cuthbertson

Nice variety of flavours and the energy benefit is excellent. Consistency is better than the competition

Graham Adams

Works well when I need an extra energy hit. Doesn't irritate my stomach either. Some flavours aren't as palatable as others but on the whole a good all rounder that works and is sensibly priced.

Jose Carlos Sousa

Excelent choice for energy gel. Very fresh and very tasty

Miss A Mills

Great price for the box of gels means I won't run out any time soon.


Working my way through, so far so good

Mark Rose

A good product that works well

Anthony Curley

Excellent product does exactly what it says

Miroslav Vokáč

There is very good for long distance ridiíng nad Isotonic Gels help keep your strength and vitality.

Malcolm Dunne

I enjoy these products as they are easy to take and digest

Stephen Louch

Great value compared to prices on other sites

Silvester Aina

Taste good and produced positive results.

Cristovao Morgado

With this mixed pack I'm able to test the best flavours for my next order!

Dave Tasker

50% off, great deal-thank you

Richard Stoodley

Good value at discounted price

Philip Hopley

Great gels for running riding and racing. Good texture, good taste and really easy to digest. Great range of flavours.

Mr Andy Rutter

Ideal to try the different flavours