GO Isotonic Energy Gels Mixed

Easily digestible energy without the need for water

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FUEL YOUR PERFORMANCE

The GO Isotonic Energy Gel is formulated to rapidly delivers 22g of carbohydrate as a source of fast acting energy when you need it most.

FAST ENERGY

Easily digestible by the stomach providing energy fast

ISOTONIC FORMULA

No need for additional water

ON THE GO FUEL

Convenient form-factor for versatile fuelling

SINGLE SOURCE

A liquid carbohydrate energy gel created using maltodextrin

  1. Vitamin B1 & B2 contribute to carbohydrate conversion
  2. Vitamin B6 aids protein metabolism.

USED BY ELITES

A convenient and fast-acting source of liquid carbohydrate, best taken during intense exercise when energy is needed to maintain performance & prevent the onset of fatigue. The isotonic formula means the gel can be used as part of your fuelling strategy without the liquid volume that often leaves you feeling bloated and sluggish.

Officially the World's first Isotonic Energy Gel and Winner of the Queen’s Award for Enterprise in 2015. It continues to be a go-to energy source for elite athletes worldwide.

WHY CHOOSE?

  • Used as part of your fuelling strategy, the GO Isotonic Energy Gel can help you maintain your pace for longer
  • Isotonic formula means no need for additional water or fluids
  • Easily & quickly absorbed by the stomach, providing energy fast
  • No artificial flavours

SUGGESTED USE

Depending on your sport or event, you should aim to consume 1-3+ gels every hour to reach a 60g-90g target intake.

Tear off the top of the packaging and squeeze the contents into your mouth as and when required.

FORMULATED BY SCIENCE

Depleting your carbohydrate stores during exercise is one of the major causes of fatigue. Delivering additional carbohydrate during exercise is known to improve performance.

FUEL DURING EXERCISE

It is recommended to consume between 60-90g of carbohydrates per hour during exercise

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SUPPORT THE SWEAT

Using GO Isotonic Energy Gels as part of your fuelling strategy can help you maintain your pace for longer, improve endurance and repeated sprint performance by maintaining blood glucose levels.

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. GO isotonic energy gel's formula that enables fast absorption in the stomach, allowing for fast energy uptake the stomach to absorb it quickly and turn it into energy fast without the need for additional dilution liquid to dilute it. This in turn enables the rapid replenishment of depleted glycogen stores.

The dreaded ‘wall’ is a feeling that all endurance athletes fear when approaching a big event or training session. This happens when your muscles have depleted its their available glycogen stores. Glycogen is the stored form of Glucose (sugar) and is your body’s main source of energy. Delivering additional carbohydrates during exercise is known to improve performance and delay the onset of fatigue. The GO Isotonic Energy Gel is designed to deliver this supply of carbohydrate, quickly and easily.

WHAT DOES ISOTONIC MEAN?

Isotonic formula allows the gel to empty from the stomach quickly and no fluid needs to be drawn into your stomach to dilute the gel

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WHAT DOES ISOTONIC MEAN?

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. GO Isotonic Energy Gels are highly practical and can easily be carried without the requirement for bulky bottles.

Reviews

Reviews

4.6/5
100 reviews

by Gillian

20/05/2025

You can take these little packets anywhere

by Sophy Brady

19/05/2025

The energy gel pack has a great variety of flavours in it and they all tasted good and gave me a lot of energy when I needed it

by Sheree

19/05/2025

Nice taste, easy to open whilst running.

by Rasha Melek

19/05/2025

The variety pack tastes great. Packed very well and all the flavours are nice. I use it 10 minutes before the workout and it boosts my energy levels. I love it and highly recommended it

by Alwena williams

19/05/2025

Amazing product

by Gabriela Bencz

18/05/2025

Great, taste, would buy again!

by Channel

18/05/2025

Would deffo get more

by Courtney Botha

18/05/2025

Really good product and value for money. Tastes good

by Caraiman Georgiana Dana

18/05/2025

Is a well-regarded option for athletes seeking quick and convenient energy during endurance activities. Its easy digestibility and variety of flavors make me love it. Taste preferences and packaging experiences are very easy to use. Thank you.

by Sanjia Chowdhury

18/05/2025

Loving these! Easy to had.

by Vicky Wagstaff

18/05/2025

would purchase again

by Joanne Kwan

18/05/2025

tasty energy gel....one of the best I have ever had....love all the flavors

by James Kirton

18/05/2025

Happy works well. Couldn't stop using them they're that good

by K CHURCHILL

18/05/2025

Quality product. Good variety flavours. Packaged well

by Claire Williamson

18/05/2025

great gel dont taste bad at all which makes them very east to take

by A Z

18/05/2025

Liked the variety of flavours. Slight isotonic taste but it still tasted good. It definitely helped me to not have to drink as much water as I normally would when training.

by Jessica McTurk

18/05/2025

Love love love

by Jadie Curtis

17/05/2025

It's an easy to use isotonic pouch. Perfect size to travel with.

by Tiffany

16/05/2025

Good taste and convenient

by customer

16/05/2025

I received a free set of Science in Sport's GO Isotonic Energy Gel Variety 7 Pack and tried them during my workouts. Each flavor is delicious and provides an instant boost of energy without any stomach discomfort. They’re easy to carry and consume on the go, making them perfect for long runs. I’d rate them 5 out of 5 stars for their taste and effectiveness. A fantastic addition to my training routine!

by Signora Tiziana Sporzon

14/04/2025

Gel molto digeribili

by Alessio Panzeri

21/03/2025

Prodotti ottimi e super energetici

by Kenny Grant

03/03/2025

Very handy for endurance rides.

by Mr Alan Webb

20/02/2025

They agree with me and help when I need that boost to get home

by Philip Vincent

11/12/2024

Does what it says on the tin

by Peter Cooper

11/11/2024

Great product

by Antonio Palmieri

23/09/2024

fantastici gel

by Luigi Ferrarese

19/09/2024

Prodotto ottimo

by Andrea Bernardi

16/08/2024

Prodotto non ancora arrivato

by ALFONSO Ravizza

29/07/2024

ottimo prodotto molto digeribile. Da consigliare.

by Rg

13/06/2024

Perfetto !

by Luigi Ferrarese

01/06/2024

Ottimo prodotto

by Simon White

28/05/2024

Great product.

by Antonio Palmieri

22/04/2024

Il mix di gel è ben curato nell'assortimento

by Alessio Panzeri

13/04/2024

Facilmente assimilabili e molto veloci

by andrea Dalle Luche

04/04/2024

Prodotto ottimo,

by aschieri simona

29/03/2024

Gel con quantitativo moderato di carboidrati, ben digeribili ed isotonici

by Marco

27/03/2024

gel ottimi in gara

by Rosario Capparelli

27/03/2024

Uno sprint dopo una 20na di minuti dall’assunzione durante la corsa

by Alberto

25/03/2024

Prodotto molto valido, prezzo medio alto

by Colm

28/03/2025

very good fuel, body learns to accept and use it over long time frames and distances.

by JW

23/03/2025

Great product use the pre and post match

by Robert Duncan

04/10/2024

Easy to stomach and consistency lends itself well to running without drinks.

by john and thanks for your order

18/08/2024

Really easy to use on bike rides, highly recommend

by Mr Taylor J Wilson

07/08/2024

Good gels.

by Mark Bamber

17/07/2024

Never fail to hit spot

by Mason Meisuria

26/05/2024

Easy to use

by Ian Hardicker

01/04/2024

Easy to eat whilst riding, easily absorbed without the need for liquids. Great flavours and an almost instant benefit.

by Alex

16/03/2024

Great flavours

by Darren Skilton

04/12/2023

Niiiiiiice

by Becky Silver

14/11/2023

I really like these gels and have used them for runs from 5km to half marathons. All the flavours are terrific and none are too sweet and sickly.

by Chris

17/10/2023

Does what it says it will. Easy on the stomach.

by Tom

09/10/2023

Spot On

by John

04/10/2023

Great on a long day in the saddle. Easy to carry in pocket and digestible

by Lee

27/09/2023

I would give 5 stars for taste if the pack didn't include the Vanilla gel. I love all the fruit and citrus type flavours, but the Vanilla is just odd for me.

by Vraj Patel

17/07/2023

Expire soon

by Sonjia Crow

09/07/2023

Love these gels, great taste and easy to digest. Lightweight for running and simple to open

by Jason Gould

29/06/2023

In my opinion the best tasting gels on the market.

by Ian Budden

10/05/2023

Excellent

by Warren

05/05/2023

Great results.

by Alessandro Conti

08/05/2025

Perfetto per le uscite superiori i 60 minuti

by Diego Radici

30/03/2025

Non l’ho ricevuto

by ALFONSO Ravizza

12/03/2025

Ottimo prodotto. Ne faccio uso da tempo e sono pienamente soddisfatto, lo consiglio ampiamente.

by Richard Mc Help

15/10/2024

prodotti di prima qualità. digeribili e molto buoni. li utilizzo da molti anni. sis è una garanzia

by Paolo Peinetti

07/10/2024

Ottimo consiglio

by Tiago Viana

26/09/2024

Great quality product and a great value

by Nigel

29/08/2024

Been using the gels for years. Better value using the subscription option.

by Andrew R - York

21/08/2024

This product never fails to give me a boost when I feel my cycling energy levels starting to drop and it's got me up some big Yorkshire hills with energy to spare at the top, if I remember to eat one 15 mins before the climb.

by Jeff Budden

11/08/2024

Love this product easy to digest never have any problems fantastic on Longer rides

by fabrizio

12/06/2024

Ottimo gusto e tanta energia.Molto digeribile.

by Andreas Maos

30/05/2024

Great variety of flavors

by stefano cappello

29/03/2024

Ottimi prodotti

by Valentina

23/03/2024

Comodo, pratico e indispensabile!

by Jackie Williams

13/03/2024

Gels taste great and are thick enough to run with once opened so they don't spill everywhere.

by Maggie

25/02/2024

Excellent for distance marathon training & events

by G R

12/02/2024

I started using gels on triathlons, and they have quickly become my go-to for energy when playing hockey.

by Gianluigi

30/01/2024

Buoni

by fausto sottopietra

14/12/2023

Anche qua prodotto super conosciuto

by Giorgio Corsini

14/12/2023

Cari ma efficaci

by Luca Dragani

13/05/2025

I gel sono buoni sia come sapore che come consistenza.

by Eddy Meloni

19/04/2025

Gel Mixed e’ la scelta migliore per avere una varietà di gusti

by Alan Martin

27/03/2025

Great taste and works well in conjunction with the energy gels

by Lorenzo

16/03/2025

Ottimi prodotto per mantenere l'apporto energetico durante lo sforzo fisico durante la corsa su lunghe distanze e sport di montagna

by MATTEO

20/02/2025

comodi e molto pratici, buona fonte di energia subito disponibile e digeribile

by Giovanni

16/01/2025

Per me i gel isotonici Sis vincono per il gusto che non nausea mai e per la facilità di utilizzo.

by Roberto Aprè

24/09/2024

Buoni, sono poco dolci ma molto leggeri

by Signora Tiziana Sporzon

12/06/2024

Ottimo prodotto

by Antonella

27/05/2024

Prodotto ottimo per il mio allenamento di corsa

by Salvatore Di Bartolo

24/05/2024

Ottimi, con i guanti invernali se non voglio rischiare di sporcarmi, mi tocca fermarmi per berla. Forse sarebbe meglio usare una confezione con il tappo.

by Adam Nelson

20/05/2024

Great stuff

by Andrea Benesso

25/04/2024

Sempre ottimi

by Tindaro Daniele Virgona

29/03/2024

Prodotto che si attesta tra i migliori per evitare eventuali problemi intestinali

by Michele

22/03/2024

Non provocano nessun disturbo di stomaco, piacevoli al gusto e efficaci

by Liam Fenton

22/03/2024

Good 😀😀😀

by LMF

04/03/2024

Tried the tropical and the lime … so far! Easier to consume than the extremely thick and very sweet ‘beta’ range! Didn’t feel it was sticking my mouth together - quite refreshing to be fair!

by albaz

16/02/2024

Performante e gustoso

by Francesco Rossi

06/02/2024

Ottimo prodotto. Da abituarsi alla consistenza