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Science In Sport Go Energy drink sachet



Really tasty energy drink that's easy on the stomach and is available in three flavours, but pricey if used regularly

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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SiS Go Energy is easy on the taste buds and stomach, and easy to drink when you're training or racing or doing a sportive. The sachets are expensive at £1.32 a bottle compared to the more economical large containers of drink poweder, but for occasional use, or for carrying in a pocket or bag on a ride, they're very convenient.

Each 50g sachet contains 47g of carbohydrate with the instructions recommending mixing with 500ml of water, though I used the 610ml Camelbak Podium for testing and found the concentration level just fine, if anything preferable to the slightly stronger taste with 500ml of water. There is just 3.5g of sugar and 189 calories in each sachet.

Go Energy uses a carbohydrate mix of maltodextrin and fructose, and it's quickly absorbed by the body. It provides a good dose of energy for fuelling longer rides, where the energy drink is a really useful, and easy way, of topping up your reserves. A couple of bottles should see you through a ride of between two and four hours quite comfortably, depending on pace and temperatures and other factors of course. Used for longer events it provides a good steady stream of energy, and used in conjunction with food will keep you going for any long ride you have planned this spring/summer.

You have a choice of three flavours, orange, lemon and blackcurrant , and they're all equally appetising. Importantly Go Energy isn't too sweet or offensive, and that makes them easier to drink, especially important when you're riding hard, a time when it can be more difficult to stomach energy products. Even towards the end of a six-hour ride, the drink is still appetising.

The sachet is easy to open, with a perforated tear section, making it easy and mess-free to get the contents into a water bottle. Half fill the bottle with water, shake vigorously, then top up, and you're good to go. The sachet can be recycled after use, so don't just chuck it in the bin.

The sachet form is not the cheapest purchasing method, but it's ideal if you just want to occasionally use an energy drink, maybe for a targeted sportive or race. If you plan to use it more frequently, you're going to be better served by investing in one of the larger containers, either the 500g or 1.6kg, as they work out cheaper per bottle than the £1.32 an individual sachet costs.

However, where the sachet comes into it own is occasional use, if you just want to use it for the occasional sportive, and use real food for all your daily riding, or if you're travelling to an event. You can chuck a couple of sachets in your kitbag and that's certainly preferable to taking a bucket of powder to a race. They're also useful if you want to take a few reserve sachets on a really long ride, light enough to go in a jersey pocket or saddlebag.


Really tasty energy drink that's easy on the stomach and is available in three flavours, but pricey if used regularly. test report

Make and model: Science In Sport Go Energy drink sachet

Size tested: Orange, lemon, and blackcurrent flavours

Tell us what the product is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

SiS GO Energy provides an easily digestible and quick supply of carbohydrate for energy. SiS GO Energy is designed to be versatile so it can be mixed at various concentrations that are suited to your needs. As such, SiS GO Energy can be consumed as part of your carbohydrate loading strategy in the days and hours prior to your training or race whereby 47 grams of carbohydrate are delivered per serving / sachet. Alternatively, SiS GO Energy can be consumed during exercise itself in order to provide both energy and fluid.

Tell us some more about the technical aspects of the product?

Recommended Usage

As part of your carbohydrate loading strategy, consume up to 4 servings per day with or between meals to help complement a high carbohydrate intake from food sources. To further boost muscle glycogen stores prior to exercise, SiS GO Energy could also be consumed with SiS GO Bars. To provide both optimal energy and hydration during exercise, SiS GO Electrolyte is superior to SIS GO Ener

Rate the product for performance:

Keeps you going longer than just using water, so ideal for long rides and sportives if you want to avoid the dreaded bonk

Rate the product for value:

For very occasional use, the sachets make good sense, and they're ideal for carrying with you on ride, but for frequent use the large bottles are a smarter investment.

Tell us how the product performed overall when used for its designed purpose

Does what it says on the sachet, keeps you Going longer.

Tell us what you particularly liked about the product

Tastes good, easy on the stomach.

Tell us what you particularly disliked about the product

Expensive in sachet form.

Did you enjoy using the product? Yes.

Would you consider buying the product? Yes.

Would you recommend the product to a friend? Yes.

Overall rating: 8/10

About the tester

Age: 31  Height: 180  Weight: 67

I usually ride:   My best bike is:

I've been riding for: 10-20 years  I ride: Every day  I would class myself as: Expert

I regularly do the following types of riding: road racing, time trialling, cyclo cross, commuting, touring, mtb,


David worked on the tech team from 2012-2020. Previously he was editor of and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds, and you can now find him over on his own YouTube channel David Arthur - Just Ride Bikes

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BikeBud | 10 years ago

They taste of powder. Not bad, but a bit offputting.

jasecd | 10 years ago

I've had a few free samples of these - decent energy release over time but I find myself reaching for the plain water in the second bottle to wash the taste out of my mouth. Saccharine sweet and very synthetic tasting.

Gasman Jim | 10 years ago

These shachets are handy to carry in one's jersey pockets on longer events in warm weather so that bottles can be refilled with a familiar electrolyte solution. I tried using the lemon or lemon & lime flavour last year. Unfortunately, compared to Clif (or some of the Nuun) electrolyte I think this stuff tastes awful.

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