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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 4.7 out of 5 based on 187 Reviews
Kevin Pegden

As above great help when strength is getting low

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


All right, very good gel!


Does as advertised and tastes good too!


great product as always when you feel you just need that little bit more on a longer ride....


Used these before and they are perfect for that energy kick to get you through exercise

Simon Sharman

This energy gel gives the boost to my workout, however the sachet is impractical. The tear strip is too tough and won’t tear so you need both hands to squeeze the gel out. You can’t use this ‘one the move’. Likely I’ll switch to Bloks as more practical and less messy. Shame!

Uhzair Naheem

Not nice at all

Simon Winton



Tastes brilliant


Really good quality and taste.

Ian Davenport

Refreshing and a change of flavour.


My favourite flavour

Anita Howe

Always great products and quick delivery

Jacqueline Mc Lannahan

Again, works well to keep me hydrated (but still prefer vanilla 😉)

Stuart Denton

Use then when cycling take about 20 mins to take affect but real good & nice flavour


Really good product and reasonable price

Steve Kennedy

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

Guest Brendan Minihane

Stomach friendly portable fuel.

Customer Bob.F

Think I like these best and probably a little too much. Definitely the ones I'll buy again


taste good not too sweet and no chemical after taste

Warren Hoyle

Love the taste and they’re not too thick and gooey


If you like a sweet flavour then this is the ultimate! I love it after a grapefruit one

Mrs Jade Leahy

Great for those long runs. One of the better tasting ones!

Russell Kelly

My go to product in a refreshing flavour

Ian Davenport

Really nice, really like the flavour.

Matthue Levitt

Very very nice flavour. I was unsure if they would be too sour or taste too artificial however they taste similar to a cherry yoghurt flavour. Like Black cherry.


Very tasty flavour and good consistency.

Bryn Beresford

Taste nice


It is too sweet for me to use all the time but mixed with the other flavours it works.


Good range of flavours and no need to drink water with these so a great choice for long stretches between aid stations.


Taste great. easy to swallow. my favourite in the isotonic energy gel range.


A bit sweet for me ,but stilllike them

Roger Neal

Tasty energy gels


The isotonic nature it the product means one doesn’t have to use extra water to aid digestion- quicker absorption, saving bottles for hydration alone.


Great. 10/10


Excellent product

Jim Mallon

Great taste.

Mr Pittaway

Not the flavour for me. Prefer apple or blackcurrant.

Mike Cope

My Go to energy gel, easy to consume without too much water


These are second to grapefruit flavour in terms of sharpness.

Ian Hardicker

Excellent, very easy to take whilst on the move. Quickly absorbed.

Patrick Bonser

Good product really helps

Darcey Wynter

Great stuff thanks

David Tyrrell

Taste great.

Ian Davenport

Refreshing and effective.


These work for me and this is my current favourite flavour. Good product, good service.


Good flavour

Jacqueline Mc Lannahan

Does the trick and tastes OK, but I prefer the vanilla flavour 😊



Maria Golden

No after taste

Alan Wallace

Used as part of my training nutrition and for my 100 mile charity ride, which was a total success.


best before dates are less than 6 months , they don't give this information on their web sites . 15 days after purchasing, they have done 60% off. Bad price management and poor customers service.

Lewis Bone

Good stuff

David Major

Good, but not as tasty as pink grapefruit

Andrew Medforth

Great on longer rides. Gives a good boost when you start to tire.

Clive Robinson

Nice orange flavour

Craig Tibbetts

Great product, never had an gi issues with it

Graham Walters

I have been enjoying the Go Isotonic for years but the bars are new to me and are very good.


Pretty good gels. I find they keep me going on long runs and I don't drink as much water as I should then.

Rob Oliver

Easy to open and never had any stomach issues.

Jamie Williams



Go to gel for those longer rides :)

Rami Khateeb

amazing ...

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

Cristian Mauri

Ottimo gel


Gel buon sapore e di ottima efficacia

marco Rapetto

La consistenza non è di mio gradimento e la confezione non è richiudibile

Stefano Mich

Molto buoni e performanti

Marco Bogani

Ottimi gel energetici

Giuseppe Somma

Ormai li uso da parecchio, credo che sono i migliori sul mercato

Luca Rossi

i miglior gel

Marco Verra

Good taste and zero stomach problems. Really easy to use.


Top senza acqua


Ottimo prodotto


I will buy more

Andrea Bernardi

Alta digeribilità. Gusto "non chimico". Ottimi risultati.


Prodotti buoni


Molto buoni

Ugo De Santis

molto buono. gusto delicato.

damiano foppa

Ottimi gel


Always easy to take whilst riding.

David Major

Delicious flavour


I love the flavour of these! More sharp then sweet


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


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

Carl Gardner

Has the desired effect, and tastes good


Excellent flavour! Good source of energy in endurance sports.

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


It reminds me Of custard. Pleasant flavour I like it very much.

Mr A J Goodfellow

Delicious! The SiS GO Isotonic Energy Gel is my favourite energy gel by some margin. You can take it without water which is useful and I really notice the improvement in my running times. My favourite flavour is the limited edition rhubarb and custard (no longer available) but this is my second favourite. Recommended!


Delicious! My favourite flavour!

Peter Burr

Great before the gym or when out cycling.

Ian Davenport

Refreshing and something a little different.

Mark Bouch

A great and fairly neutral flavour.

michael majhu

Great value for money

Jacqueline Mc Lannahan

Yummy yum yum!! 😊 great tasting, does not give me heartburn and keeps me going!!


Vanilla is my new favourite, product works amazingly

Douglas Rae

Great product


Taste delicious, great for an energy boost mid run.

Stephen Long

Decent tasting gel

Una Cosgrave

lovely flavour definately will get again

Andrew Stevenson

Tastes decent


Do not like the vanilla gel

hugh sergeant

Best flavour takes the pain away

Bethany Brown

Tasty product , great flavour

Rick Nimbley

Probably one of my favourites, great taste!


Loved it- I preferred Rhubarb and Custard and Vanilla but this is really nice too- a welcome change from the usual orange/berry flavours.

Malcolm Elders

Great flavour. Takes your mind off what it is.

Peter Burr

Great before the gym or when out cycling.

Matthue Levitt

This flavour surprised me. It was a lot better than I expected. Up there with one of my favourites.


Avoid cramping late in the match with this ...

Paul Renton

Always good avoid the bonk make sure you have yours.

Heather Doak

Great flavour

Chris R

Useful but I find the texture cloying and a bit hard to swallow.

K Harrison

Very easy to take and a decent flavour too.


Best out of all flavours love these

Paul Jobson

Like the taste , still not sure if the gels work for me though