Science In Sport GO Isotonic Energy Gel 60ml - Single Unit (Tropical)
- Gel
- 22 g carbs per serving
- From Science In Sport's label
Science In Sport GO Isotonic Energy Gel 60ml - Single Unit (Tropical) has 22 g carbs, 10 mg sodium per serving, from R44 a serving at the cheapest size. Value score 2.9/10 (poor value).
Easily digestible by the stomach providing energy fast. No need for additional water. Convenient form-factor for versatile fuelling. A liquid carbohydrate energy gel created using maltodextrin. 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.
- 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
Decision helper the numbers athletes compare
| Cost score against the Endure average | 3.4/10 |
|---|---|
| 35 products in the category | +1.07σ |
| Requires >2 servings/hr to hit 60 g | -0.5 |
| Value score | 2.9/10 |
On the label per serving, 60ml
| Energy | 88 kcal |
|---|---|
| Carbs | 22 g |
| Sugar | 0.6 g |
| Protein | 0 g |
| Fat | 0 g |
| Sodium | 10 mg |
| Potassium | 0 mg |
| Caffeine | 0 mg |
| Carb type | Maltodextrin |
| Glucose to fructose | 1:0 |
| Carb sources | Maltodextrin |
Who it suits and where it falls short
The GO Isotonic Energy Gel is tailored for endurance athletes who require quick energy without the need for additional water. Ideal for marathon runners who need rapid carbohydrate delivery during long training runs or races, cyclists on extended rides who prefer a no-mix solution, and triathletes who need a quick, easy-to-digest energy source during transitions or on the bike. It's particularly suitable for athletes who prefer single-source carbohydrate products and need to maintain energy levels during prolonged efforts.
tempo runs 60-90min, long rides 3-4hr, brick workouts 2-3hr, race simulations 90min+, interval sessions 60min
- Isotonic formula requires no additional water.
- Rapid absorption due to maltodextrin.
- Convenient single-serving packaging.
- Low sugar content minimizes GI distress.
- No artificial flavors, enhancing natural taste.
- Single-source carb limits absorption rate.
- Low sodium content may require supplementation.
- High cost per carbohydrate gram.
- Limited to 60g/hour due to SGLT1 transport.
How to use it, by distance
For a 5k, the gel is not essential due to the short duration. However, consuming one 15 minutes before the race can provide a quick energy boost.
Taking one gel 15 minutes before the start can help sustain energy levels. No need for additional gels during the race unless at a very high intensity.
Consume one gel 15 minutes before the race and another at the 45-minute mark to maintain energy levels. This strategy helps prevent early fatigue.
Start with a gel 15 minutes before the race. Continue with one gel every 45 minutes to maintain a steady carbohydrate intake, aiming for 60g carbs/hr. Pair with water if needed for hydration.
The science in short
Best for mid-race energy boosts during long endurance events where hydration is a concern.
Isotonic — The gel's osmolality is designed to match that of body fluids, promoting rapid absorption without the need for additional water, reducing the risk of gastrointestinal discomfort.The GO Isotonic Energy Gel is a convenient option for athletes needing quick, water-free energy. Its isotonic nature ensures rapid absorption, though its single-source carbohydrate limits maximum intake. Ideal for shorter events or as a supplement to a broader nutrition strategy, but not optimal for those requiring high carbohydrate loads. The low sodium content necessitates additional electrolyte management, and the cost per gram of carbohydrate is high compared to competitors.
The isotonic nature of the gel means it matches the osmolality of body fluids, allowing for rapid gastric emptying and absorption. Maltodextrin, a glucose polymer, is absorbed via the SGLT1 transporter, providing quick energy. However, as a single-source carbohydrate, it is limited to about 60g per hour, which is below the optimal absorption ceiling of 90g/hr achieved with multi-source carbs.
The primary downside is the single-source carbohydrate, which limits the maximum carbohydrate absorption rate. This can be a limiting factor for athletes needing higher carbohydrate intake during intense or prolonged efforts.
Each 60ml serving provides 22g of carbohydrates, which is on the lower end compared to other gels, requiring multiple servings to meet higher carbohydrate needs.
0.37g/ml, which is typical for isotonic gels but lower than concentrated gels.
The product relies solely on maltodextrin, a glucose-based carbohydrate, making it a single-source energy gel.
Maltodextrin — glucose pathway (SGLT1)
Contains only 10mg of sodium per serving, which is significantly lower than the 300-600mg/hr typically lost through sweat during endurance activities.
1:0 — This limits absorption to the SGLT1 pathway, capping intake at about 60g/hr.
3 gels = 66g carbs, within the 60-90g/hr ceiling but at the lower end.
- Do not rely solely on this gel for sodium needs during long events.
- Exceeding recommended intake may lead to gastrointestinal discomfort.
- 🔒 Single-source carb — limited to ~60g/hour absorption rate via SGLT1 only.
Using it in training and racing
- acidity
- moderate — Citric acid provides a slight tang, enhancing the tropical flavor without being harsh.
- summary
- After a long run, the gel's light texture and moderate sweetness are refreshing, making it easy to consume without overwhelming the palate.
- texture
- The gel is easy to handle, with a squeeze pressure that allows for quick consumption. It dissolves rapidly without leaving residue.
- mouthfeel
- gel-like — Smooth and easy to swallow, with a texture that dissolves quickly on the tongue.
- sweetness
- moderate — The sweetness is balanced, akin to a diluted sports drink, avoiding overpowering sugariness.
- aftertaste
- clean — Leaves a neutral finish without lingering sweetness or bitterness.
- available flavors
- Tropical
- tips
- Test gels during training to avoid race-day surprises., Pair with water if additional hydration is needed., Monitor for any gastrointestinal discomfort., Adjust intake based on weather and sweat rate.
- week 1
- Start with 1 gel during a 60-minute run, twice a week, to assess tolerance.
- week 2
- Increase to 2 gels per session, focusing on longer runs to test digestion.
- week 3
- Simulate race conditions with 3 gels over a 90-minute run to mimic race-day intake.
- week 4
- Conduct a full race rehearsal, matching the planned gel intake and timing for your event.
In heat, the gel remains stable and easy to consume, though it may become slightly more fluid. In cold conditions, it thickens slightly but remains manageable. Freezing is not recommended as it can alter the texture and make consumption difficult.
The gel features a tear notch for easy opening, suitable for one-handed use. Minimal sticky residue makes it convenient for on-the-go consumption, fitting well in running belts or cycling jersey pockets.
The packaging does not provide specific recyclability information, and there are no claims regarding sustainable sourcing or brand transparency. This is an area for potential improvement.
- Electrolyte tablets for sodium supplementation during long events.
- Protein bars post-exercise for recovery.
- Hydration packs for water intake without extra carbs.
- The isotonic formula allows for rapid absorption without additional water (Brand claim).
- Maltodextrin is absorbed via the SGLT1 transporter, limiting intake to 60g/hr (Ingredient pharmacology).
- The gel's low sodium content requires additional electrolyte management (Nutrition analysis).
- Single-source carbohydrate limits absorption rate compared to multi-source options (Carb matrix analysis).
## Who It's For The GO Isotonic Energy Gel is designed for endurance athletes who need a quick energy source without the hassle of additional hydration. Its isotonic formulation makes it ideal for marathon runners, cyclists, and triathletes who require rapid carbohydrate delivery during long training sessions or races. The gel's single-source carbohydrate profile is best suited for those who prefer or tolerate maltodextrin as their primary energy source.
## Inside the Formulation This gel is formulated with maltodextrin, a glucose-based carbohydrate that is rapidly absorbed via the SGLT1 transporter. The isotonic nature of the gel ensures it matches the osmolality of body fluids, promoting quick gastric emptying and absorption. While the gel provides 22g of carbohydrates per serving, its single-source nature limits carbohydrate absorption to about 60g per hour, below the optimal 90g/hr achieved with multi-source products.
## On Course: How to Use It For a marathon, start with a gel 15 minutes before the race and continue with one gel every 45 minutes. This strategy helps maintain a steady carbohydrate intake, aiming for approximately 60g of carbs per hour. The gel's isotonic formula means there's no need for additional water, but be mindful of its low sodium content, which may require supplementation with electrolyte tablets or drinks.
## How It Compares Compared to multi-source carbohydrate gels, the GO Isotonic Energy Gel's single-source formulation limits its absorption rate. However, its isotonic nature offers a unique advantage for those concerned about hydration. The cost per gram of carbohydrate is higher, which may be a consideration for budget-conscious athletes.
## Training Your Gut To optimize digestion and absorption, start with one gel during a 60-minute run, twice a week. Gradually increase to two gels per session, focusing on longer runs. By week three, simulate race conditions with three gels over a 90-minute run. In the final week, conduct a full race rehearsal, matching the planned gel intake and timing.
## The Verdict The GO Isotonic Energy Gel offers a convenient, quick energy source for endurance athletes. Its isotonic formula ensures rapid absorption, making it a reliable option for those who prefer not to carry extra water. However, its single-source carbohydrate limits maximum intake, and its low sodium content necessitates additional electrolyte management. While the gel is more expensive per gram of carbohydrate, its ease of use and rapid energy delivery make it a strong contender for shorter events or as part of a broader nutrition strategy.
Sizes and where to buy
Questions about GO Isotonic Energy Gel 60ml - Single Unit (Tropical)
How many carbs are in Science In Sport GO Isotonic Energy Gel 60ml - Single Unit (Tropical)?
22 g of carbs per serving (60ml), with 10 mg sodium, from Science In Sport's label.
What does Science In Sport GO Isotonic Energy Gel 60ml - Single Unit (Tropical) cost per serving?
From R44 a serving at the cheapest size, which buys 5 g of carbs per R10.
How many gels should I consume during a marathon?
For a marathon, it's recommended to start with one gel 15 minutes before the race and continue with one gel every 45 minutes. This helps maintain a steady carbohydrate intake, aiming for around 60g of carbs per hour. Adjust based on personal needs and race conditions.
How does this gel compare to its main competitors?
The GO Isotonic Energy Gel is unique due to its isotonic formulation, which allows for rapid absorption without additional water. However, it uses a single-source carbohydrate, limiting absorption to 60g/hr, unlike multi-source gels that can reach 90g/hr. It's also more expensive per gram of carbohydrate.
Does this gel contain caffeine?
No, the GO Isotonic Energy Gel does not contain caffeine, making it suitable for athletes who prefer to avoid stimulants during their training and races.
How should I mix or dissolve this gel?
This gel is ready to consume straight from the packet and does not require mixing or additional water. Its isotonic formulation ensures rapid absorption, making it convenient for on-the-go energy needs.
How does the gel behave in heat or cold conditions?
In heat, the gel remains stable and easy to consume, though it may become slightly more fluid. In cold conditions, it thickens slightly but remains manageable. Freezing is not recommended as it can alter the texture and make consumption difficult.
How should I train my gut to tolerate this gel?
Start with one gel during a 60-minute run, twice a week. Gradually increase to two gels per session, focusing on longer runs. By week three, simulate race conditions with three gels over a 90-minute run. Conduct a full race rehearsal in the final week.
Is the gel vegan or free from common allergens?
The gel does not contain any animal-derived ingredients and is free from common allergens like gluten and dairy, making it suitable for vegans and those with specific dietary restrictions.
What is the refund or availability policy for this product?
Availability may vary by region, and it's best to check with the retailer or official website for specific refund policies. Generally, unopened products can be returned within a certain period if purchased directly from the manufacturer.
In our journal featuring GO Isotonic Energy Gel 60ml - Single Unit (Tropical)
Compare with gels close in carbs
Racing with GO Isotonic Energy Gel 60ml - Single Unit (Tropical)? Put it in your plan.
Glyco places it on your race course by time, at the rate your gut can take, and tracks what you actually used.
