🍇 Fuel your run with science-backed, guilt-free energy!
CLEAN LOW SUGAR - Less than 1g sugar per sachet keeps you energized, not bloated
CONVENIENT 30 PACK - Perfect bulk supply for marathon training or intense workout cycles
RAPID ENERGY BOOST - 22g isotonic carbs deliver instant fuel without stomach upset
VEGAN ALLERGY FRIENDLY - Gluten-free, dairy-free, nut-free, and vegan-approved for mindful athletes
ELITE SPORTS SCIENCE BACKING - Trusted by pros since 1992 with cutting-edge research and innovation
Science In Sport GO Isotonic Energy Gels provide 22g of easily digestible carbohydrates per 60ml sachet, delivering quick energy with less than 1g sugar. Vegan, gluten-free, and developed with elite sports science since 1992, these blackcurrant-flavored gels are designed to keep professional athletes and fitness enthusiasts energized and comfortable during intense exercise. Available in a convenient 30-pack, they are the go-to choice for sustained endurance and peak performance.
Specifications
Product Dimensions
23 x 9 x 17 cm; 2.17 kg
Item model number
2955
Product Name
Science in Sport GO Isotonic Energy Gel - Blackcurrant, 60 ml
SiS (Science in Sport) Limited, Unit 8A, Frontier Park, Blackburn BB1 3AL UK Science in Sport S.R.L. via Michelangelo Buonarroti, 39 – 20145 Milan, ITALIA
Brand
Science in Sport
Format
Gel
Age Range Description
grownups
Package Information
Bottle, Can
Package Information
Sachet
Manufacturer
Science in Sport
Serving Size
100 ml
Energy (kJ)
613.00 kJ
Energy (kcal)
146.51 kcal
Fat
0.1 g
of which:
-
- Saturates
0 g
Carbohydrate
36.0 g
of which:
-
- Sugars
1.0 g
Protein
0 g
Salt
0.01 g
Have a Question? See What Others Asked
Why should I choose SIS Go Isotonic gels?
Do I need water?
Will I get bloated?
When should I use the isotonic gel?
Reviews
4.3
All from verified purchases
A**R
My go-to energy gels
I've tried loads of energy gels, but I keep coming back to these blackcurrant SiS ones. The flavour is spot on - not too sweet or artificial - and they’re smooth enough to take mid-run without needing water. I’ve had other gels that are too thick or sickly sweet, but these are just right. The consistency makes them easy to swallow, even when I’m pushing hard.They give me a steady energy boost without any sudden spikes or crashes. With 22g of carbs per gel, they keep me going on longer runs and rides without upsetting my stomach. I like that they’re isotonic, so I don’t have to chug water with them. They’re also vegan and gluten-free, which is a nice bonus.The 30-pack is great value, saving me money and the hassle of restocking all the time. I always keep a few in my running belt and cycling jersey because I know they work for me. If you need a reliable, easy-to-take gel that won’t let you down, I’d definitely recommend these.
M**K
does the job
good energy drink
A**L
Fast energy
ProsFast acting energyEasy to carry on runsEasy to consumeConsHard to open on the moveArtificial blackcurrant flavourPackage came sellotaped shut with one gel missing
B**E
Good taste
Very good
A**H
i think there ok
i need to try more of them they are doing me good regards alan
J**D
Pb incoming.
I recently tried the Science in Sport GO Isotonic Energy Gels in blackcurrant flavor, and I am thoroughly impressed! This product deserves a full 5-star rating for its effectiveness and taste.Each 60 ml serving packs in 22 g of carbohydrates, offering a quick and efficient energy boost during my runs without feeling heavy on my stomach. The isotonic formula is perfect for hydration, allowing me to fuel up without the need for additional water.The blackcurrant flavor is delicious and refreshing—not overly sweet, making it easy to consume even during intense workouts. I appreciate that it’s low in sugar, which keeps my energy levels stable without crashing afterward.Overall, the Science in Sport GO Isotonic Energy Gels have become a staple in my running routine. They provide the perfect blend of energy and taste, making them an essential part of my training. Highly recommended for any athlete looking to enhance their performance!
D**N
Good value
Good value and keeps me going on those long mountain days
S**E
Does the job!
Good quality product however use by product sent was less than 6 months. Buying in bulk means you want them to last..
Common Questions
Trustpilot
TrustScore 4.5 | 7,300+ reviews
Suresh K.
Very impressed with the quality and fast delivery. Will shop here again.
4 days ago
Pooja R.
The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.
Science in Sport Isotonic Gels - Box of 30 - Blackcurrant
Manufacturer Contact Information
SiS (Science in Sport) Limited, Unit 8A, Frontier Park, Blackburn BB1 3AL UK Science in Sport S.R.L. via Michelangelo Buonarroti, 39 – 20145 Milan, ITALIA
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I’ve had other gels that are too thick or sickly sweet, but these are just right. The consistency makes them easy to swallow, even when I’m pushing hard.They give me a steady energy boost without any sudden spikes or crashes. With 22g of carbs per gel, they keep me going on longer runs and rides without upsetting my stomach. I like that they’re isotonic, so I don’t have to chug water with them. They’re also vegan and gluten-free, which is a nice bonus.The 30-pack is great value, saving me money and the hassle of restocking all the time. I always keep a few in my running belt and cycling jersey because I know they work for me. If you need a reliable, easy-to-take gel that won’t let you down, I’d definitely recommend these."},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"M***K"},"datePublished":"8 December 2024","name":"does the job","reviewBody":"good energy drink"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"4.0"},"author":{"@type":"Person","name":"A***L"},"datePublished":"8 July 2023","name":"Fast energy","reviewBody":"ProsFast acting energyEasy to carry on runsEasy to consumeConsHard to open on the moveArtificial blackcurrant flavourPackage came sellotaped shut with one gel missing"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"B***E"},"datePublished":"6 August 2024","name":"Good taste","reviewBody":"Very good"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"A***H"},"datePublished":"13 May 2024","name":"i think there ok","reviewBody":"i need to try more of them they are doing me good regards alan"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"J***D"},"datePublished":"18 February 2025","name":"Pb incoming.","reviewBody":"I recently tried the Science in Sport GO Isotonic Energy Gels in blackcurrant flavor, and I am thoroughly impressed! This product deserves a full 5-star rating for its effectiveness and taste.Each 60 ml serving packs in 22 g of carbohydrates, offering a quick and efficient energy boost during my runs without feeling heavy on my stomach. The isotonic formula is perfect for hydration, allowing me to fuel up without the need for additional water.The blackcurrant flavor is delicious and refreshing—not overly sweet, making it easy to consume even during intense workouts. I appreciate that it’s low in sugar, which keeps my energy levels stable without crashing afterward.Overall, the Science in Sport GO Isotonic Energy Gels have become a staple in my running routine. They provide the perfect blend of energy and taste, making them an essential part of my training. Highly recommended for any athlete looking to enhance their performance!"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"D***N"},"datePublished":"30 April 2023","name":"Good value","reviewBody":"Good value and keeps me going on those long mountain days"},{"@type":"Review","reviewRating":{"@type":"Rating","ratingValue":"5.0"},"author":{"@type":"Person","name":"S***E"},"datePublished":"3 March 2015","name":"Does the job!","reviewBody":"Good quality product however use by product sent was less than 6 months. Buying in bulk means you want them to last.."}],"aggregateRating":{"@type":"AggregateRating","ratingValue":4.875,"bestRating":5,"ratingCount":8}},{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Why should I choose SIS Go Isotonic gels?","acceptedAnswer":{"@type":"Answer","text":"Used as part of your fuelling strategy, the GO Isotonic Energy Gel can help you maintain your pace for longer"}},{"@type":"Question","name":"Do I need water?","acceptedAnswer":{"@type":"Answer","text":"Isotonic formula means no need for additional water or fluids"}},{"@type":"Question","name":"Will I get bloated?","acceptedAnswer":{"@type":"Answer","text":"The SIS gel is easily & quickly absorbed by the stomach, without the the need for extra liquid that often leaves you feeling bloated and sluggish"}},{"@type":"Question","name":"When should I use the isotonic gel?","acceptedAnswer":{"@type":"Answer","text":"Best to be taken during intense exercise when energy is needed to maintain performance & prevent the onset of fatigue"}}]}]}
