BACX Performance Fuel review: tasty and effective

Completely plant-based and synthetic-nonsense-free, BACX Performance Fuel is an energy-packed syrup for before and during exercise

BACX Performance Fuel sachet and bottle
(Image: © Pat Kinsella)

Advnture Verdict

On test, we found this plant-based, natural-ingredient-loaded, energy-imparting elixir to be a really tasty and effective alternative to some of the more synthetic syrups and drink mixes around. Mixed with water, the resulting carb-heavy drink is soft on the stomach, and there were no nasty side effects.


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    Plant based (suitable for vegetarians & vegans) and planet friendly

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    Gentle on stomach

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    No artificial preservatives, colors or flavors

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    Caffeine and maltodextrin free

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    Packaging is recyclable (in theory…)


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    Polypropylene packaging tricky to recycle

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    Limited flavors

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BACX Performance Fuel: first impressions

If you’ve seen any of the promotional material for BACX Performance Fuel – a plant-based energy drink new to the active nutrition market – you’ll know the mix has been loudly championed by F1 driver Sebastian Vettel, who became a major investor in the company/product after using BACX exclusively while racing for Aston Martin during the 2022 season.


• List price (per 10 sachets): £23.30 (UK) (not currently officially available in the the US)
• Size per sachet: 70ml
• Weight per sachet: 83g
• Flavors: Orange / Berry
• Energy per sachet: 387kj / 91kcal
• Carbohydrates per sachet: 20g (15.4g of which = natural sugars)
• Salt per sachet: 0.6g
• Fat per sachet: 0.1g
• Protein per sachet: 0.4g

Available in 70ml sachets, BACX Performance Fuel is designed to be mixed with water and consumed prior to and/or during exercise. BACX makes a big deal about the fuel’s natural and non-animal-product ingredients, which is presumably what originally appealed to Vettel, who once spent some time experimenting with a vegan diet suggested by fellow driver Lewis Hamilton.

Unlike Hamilton, Vettel is no longer a vegan, but he does claim BACX is the only supplement he’s ever used that supplied the requisite energy to get him through a Grand Prix race without giving him stomach problems (which suggests his poor pit crew may have had more to deal with than quick tire changes over the years).

Full ingredients

Water • Sweet Potato Juice Concentrate • Coconut Water Concentrate • Brown Rice Syrup • Agave Nectar • Carthamus (Safflower) Concentrate • Vegan Amino Acid Blend* • Natural Orange Flavoring • Natural Flavoring • Color: Carotenes • Acidity Regulator: Citric Acid • Sodium Citrate (* L-Leucine, L-Isoleucine, L-Valine, L-Arginine)

The drink supplement, which emanates from Oxford University and claims to have been subjected to thousands of hours of laboratory scrutiny, is also enthusiastically endorsed by other sportsfolk and athletes, including Team GB track cyclist and Commonwealth medalist Joe Truman.

But, while all this backing for BACX by well-known sporty types is impressive, we’re not, of course, simply going to take their word for how good it is. To assess it for ourselves, and to see whether it should be included in our guide to the best active nutrition, I’ve been swigging on the elixir before and during a number of active days out on the trails. Here’s what I found out.

BACX Performance Fuel: in the field

BACX Performance Fuel being mixed with water

BACX Performance Fuel – just add water (Image credit: Pat Kinsella)

A lot of the press around this product is about what the syrup hasn’t got in it (there are no artificial preservatives, colors and flavors, nor so much as a whiff of caffeine or maltodextrin), which is all well and good. Personally I always avoid running gels and drinks with caffeine in them before a taking on a demanding activity, such as running or bike riding, because I find it can irritate my stomach and cause dehydration, and maltodextrin has a bad name as quick-burning carb that can cause or exacerbate allergies (see also what to eat while running for how eating and drinking at the right time can improve your runs).

But I was just as pleased to see what does feature in the ingredients, not least because I’m borderline addicted to oranges and sweet potatoes. There are only two flavors available at the moment: orange and berry. Some more options would be good, but it’s early days for BACX, and these may well be forthcoming at some point.

There’s a lot going on beyond the taste, though. Containing a complex cocktail of mostly natural foodstuffs, each 70ml serving of the syrupy concoction imparts 20g of carbohydrates, along with 1,200mg of vegan aminos and a 680mg burst of electrolytes.

BACX Performance Fuel packet

Technically BACX Performance Fuel’s packaging is recyclable, but you can’t just throw it in your recycling bin at home, sadly (Image credit: Pat Kinsella)

Naturally, when it came to testing this elixir, I gravitated to the orange-flavored option, and once mixed with water, I found the taste very pleasant. The packaging recommends combining one sachet of BACX with a minimum of 200ml of water, but I found 500ml to be a good mix, especially for ingestion during exercise. These measures preserve the taste, while not making it overwhelming, and I found it easy and enjoyable to sip or gulp down when blended at this ratio.

Over the last few months, I’ve consumed umpteen bottles of BACX before and during a range of outdoor and sporting pursuits, including an all-day Taekwondo competition and a very punishing 26-mile / 42km off–road running event, during which I really appreciated the energy injection the drink gave me.

I’ve also been swigging it while hiking, biking and kayaking, and I can report that the benefit from using the drink supplement was tangible, and my post-exercise recovery was rapid. The drink is heavy on carbs, while being gentle on your stomach, and I suffered none of the nasty side effects that I have previously experienced with some gels – details of which I will spare you.

BACX nutrition proudly proclaim their sachet packaging is recyclable, which it technically is, but being made of polypropylene, you can’t just chuck it in your green bin – you need to check with your local authority about how to recycle it.

Pat Kinsella

Author of Caving, Canyoning, Coasteering…, a recently released book about all kinds of outdoor adventures around Britain, Pat has spent 20 years pursuing stories involving boots, bikes, boats, beers and bruises. En route he’s canoed Canada’s Yukon River, climbed Mont Blanc and Kilimanjaro, skied and mountain biked through the Norwegian Alps, run an ultra across the roof of Mauritius, and set short-lived records for trail-running Australia’s highest peaks and New Zealand’s Great Walks. He’s authored walking guides to Devon and Dorset, and once wrote a whole book about Toilets for Lonely Planet. Follow Pat’s escapades on Strava here and Instagram here.