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SiS GO Isotonic Energy Gel - 6 Pack

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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

  • • Truly isotonic formulation - no need for water
  • • 22 grams of rapidly absorbed carbohydrate per gel
  • • Convenient easy-to-take format
  • • Contents: 6 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 endurance athletes. Use during endurance sessions and events to help avoid flagging.

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 - Pineapple

GO Isotonic Gels - Pink Grapefruit

GO Isotonic Gels - Apple

GO Isotonic Gels - Orange

GO Isotonic Gels - Tropical

GO Isotonic Gels - Blackcurrant

GO Isotonic Gels - Cherry

GO Isotonic Gels - Chocolate

GO Isotonic Gels - Lemon & Lime

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 Immune?

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 Energy products e.g 1 x GO Isotonic Energy Gel and 1 x 500ml 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'?

GO Isotonic gels contain natural flavourings.


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

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, Gels do not contain aspartame.


Will they fit in my cycle jersey pocket?

Yes! All 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 4.8 out of 5 based on 114 Reviews
Kevin Pegden

As above great help when strength is getting low


Liked the flavour

Maria Golden

No after taste


Excellent product

Andrew Butler

Great gels, easy to digest and not too sweet. Packaging is easy to open on the move too.

stefano Baldoni

It fill like apple pulp. Give me a strong power and I can use 5 or 10 and never fil nauseate

Nick (MOT)



Good flavour

Mr D Burgess

Tastes good and works well


Bloody good stuff

Mark Bouch

My go-to favourite over an extended training session or event


Energy and helps avoid cramping

Andrea Fichera

Perfect for any sport activity

Carmine DV

I gel sono molto digeribili e poco dolci per cui non creano problemi quando si prendono anche se si è sotto sforzo. Il gel risponde bene alle esigenze per cui è stato creato, comodo anche da aprire con una mano sola e strappo.


Not as sweet as some of the others and better for it.


Good flavour and easy to use

Carwyn Wooldridge

Lovely flavour & does the job it says will do.


Gusto gradevole e digeribile


ottimo sapore e gel veramente saporito al palato sembra di mangiare un frappè


Sicuramente il miglior gel energetico. Gusto piacevole e nessun effetto spiacevole gastrointestinale

Alfonso Capuano

Perfetto very good prodotto nelle specifiche pratico e molto bello ottimo in tutto Consigliatissimo


love the flavour and love the packaging.


Great product for my training.

marc arpesella

Great product.

Andy Battley

Great flavour. Easy to digest when exercising.


Great flavour

Tom Banks

Love these gels, used them for years.

Ian A

These gels are easy to carry and easy to open one handed whilst on the move. Taste good too!


Great tasting gels


Good value when on sale/reduced price.

Isaac Powell

Getting the job done when I bonk.

Gian-Luca Elsawey

Really good for energy good flavour

Jony B

Other gels which I have used appear to be just liquid sugar and are quite hard to push/suck out of the container whilst still riding. These you can almost just suck out and finish off with a bit of a squeeze, so much easier to have while on the go.

John Simms

Quality products


Does the job. Tastes pretty good.

Mr Elliott

It packs a punch

Robert Tebay

Does exactly what it says on the tin - easy to eat on the move mid ride and virtually zero sugar so gives you sustainable energy


Does what it needs to do and it works for me


So difficult to open with sweaty or gloved hands when on the bike. Please make them easier to get into


Sickly sweet

Mark Pierce

Taste great

David B

Works well for me and I am sticking with it.


Great for long distance running

Andy Battley

Easy to digest whilst exercising. Flavour is okay not my favourite but it's a personal preference.


Essential item in a cyclists nutrition support


Like the taste of these

c scott

SiS make the best training products that I've experienced.

Catherine Maciver

Great gels, I always take them on my long runs or when out on a cycle. Very pleasant tasting and work for that extra boost of energy.


Solid gels, can sometimes be a bit tricky to open but great energy boost


I’m usually not too fussed with these sort of gels but this one is great!

Casey Talbot

Grate taste

Neil Ranson

Very good

Patrick Wadsworth

I like the taste of these and I can use them for longer runs without upsetting my stomach


Does the job. Tastes good.

Mr Elliott

Goes down easily

Mr. Eccles

One of my favourite flavours. Always does the job.

Sarah Mercer

Love them! They’re so good for long runs

Robert Tebay

Does exactly what it says on the tin - easy to eat on the move mid ride and virtually zero sugar so gives you sustainable energy


Great product

Jim Mallon

Great taste.

stefano Baldoni

It fill like pineapple pulp. Give me a strong power and I can use 5 or 10 and never fil nauseate


Lovely flavour


Great flavour! Not as sweet as Cherry. It's a nice flavour if you don't want a taste shock!

Mr D Burgess

Worlds well and tastes good


Tastes good and gave me the kick I needed


Perfect energy supply easy to digest when on bike rides 2 hours +

Peter Burr

geat before the gym or when out cycling


sis gels enjoy makes you wish you were going further

Rami Khateeb

amazing ...


Ottimi. Gusto buono e grande carica


Ottimo prodotto, molto performante

Alessandro Ferrario

Prodotto molto buono

Ivano Scappi

Manca data di scadenza quando si acquista.

Andrea Bocci

Ottimi li consiglio

Carlo Andrea Vergani

Ottimo sapore


Ottimo prodotto

antonio bruno

Ottimo prodotto


Molto buono il gusto e gel abbastanza grande da giustificarne il prezzo che giá di per se é basso. Prodotto di ottima qualità


Il top dei gel

Daniele Pavanello

ottimi gel

Andrea Ferrarese

Ottimo e comodo


Ottimo prodotto. Essenziale


Squisito e performante

federico zampar

Gusto gradevole, ottima digeribilità

marco gadotti

Ottimo prodotto per ciclisti durante allenamenti e gare

Christian R.

Ottimo, stomaco ok e facile assunzione. Sarebbe utile che lo strap della confezione non si staccasse facilmente, così da evitare inquinamento lungo i sentieri e strade. Comunque vero che sta sempre alla sensibilità di noi utilizzatori.


Preso in offerta che non è stata tale. Il gusto non era granchè ma il prodotto sembra valido


Gel ottimi

Andrea Rovaris

ottimo energetico e digeribile.


Tastes good and always easy to take whilst riding.

Craig Tibbetts

Great product, good taste


Helps on a long turbo session.

Peter Burr

Great before going to the gym or when out cycling.

Five aday

Easy to digest on the go, nice flavour.


Very good for when I’m doing long distance runs!


Nice product good taste ...

William Lee

Great product delivered very efficiently


Really good product and reasonable price


gel dal sapore gradevole e non troppo dolciastro. Confezione facile da aprire


molto buono provato sia per trail che per corsa su strada ottima resa


Ottimo gusto fresco...tra i miei preferiti


All right, very good gel!

Steve Kennedy

Easy to take product which works for me. Nice flavours and easy to swallow on the run.

Carl Gardner

Has the desired effect, and tastes good


Excellent flavour! Good source of energy in endurance sports.

Guest Brendan Minihane

Stomach friendly portable fuel.

Cristiano Parzani

Good taste and easy to assume. Digestible.

Customer Bob.F

Nice flavour Not sure whether it's banana, mango, pineapple or a combination