★★★★★
"First marathon I didn't hit the wall. Took one every 20 mins from the gun. No GI issues at all which is a first for me."
Sarah M.Sub-3.30 Marathoner
Pre-launch Testing
RUNNERS
Fuel every mile, your way.
A new chewable carb hit for runners who don't want another gel. 50g of fast-acting glucose in a single, easily stored packet.
The chewable form of Styrkr's race-day fuel.
Five dense chews. CEL50 is 50g of fast-acting glucose. One packet you can actually stomach mid-run.
50gCarbs per pack
10gCarbs per chew
5xChews per pack
Carbs and electrolytes. In one chew.
Glucose is the body's fastest fuel. CEL50 delivers 50g of it per pack, with 267mg of sodium to match — carbohydrate and electrolyte in one chew, built for hot, long, high-sweat efforts.
50g of fast-acting glucose
Fifty grams of glucose per pack — the body's fastest, most readily used carbohydrate — split into five 10g blocks you take one at a time. Fuel little and often, on your terms.
Carbs and electrolytes in one
267mg of sodium per pack does two jobs: it replaces what you lose in sweat, and sodium helps drive glucose and water absorption — the oral rehydration principle. Built for heat and salty sweaters — match it to your sweat rate.
The stackable glucose base
A single glucose source fuels steady efforts brilliantly. Going longer or harder? CEL50 is the glucose base of a dual-carb strategy — stack it with a fructose gel or mix to build a higher-rate plan on demand.
From the makers of GEL50
Built by the team behind GEL50 — the same race-day pedigree, now in a chew you control instead of a gel you squeeze.
50g of Fast-Acting Carbs. Five blocks. You control the dose.
- 50g fast-acting glucose per pack
- 5x 10 gram blocks
- Added sodium + potassium
Then £42.49 / refill (save 15%) — your founding price, locked while you stay subscribed.
✓ Free UK shipping over £50 ✓ Skip or cancel anytime
30-day Race-Day Guarantee — money back, no quibbles
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Don't just take our word for it.
From first-time marathoners to pro teams — real athletes, real results, in their words.
"STYRKR helped to fuel my half marathon PB last year — 12 minutes faster! 10/10."
"Consistent subscriber of the STYRKR electrolytes. The ingredient quantities are better than any other — but they actually taste pleasant."
"Taste really good and keep me fully fuelled even on the longest days on the bike."
"STYRKR is absolutely incredible — couldn't recommend it more!"
"Good tasting, easy to use, and swift delivery."
"Very tasty and very easy on the stomach."
"Really enjoy the GEL50 and MIX90 products."
"Great on the digestive system, unlike other brands I've tried — stocked up ready for racing season."
"Great products and friendly customer service. No fake flavours — high carb in less volume, and great bundle deals."
"STYRKR helped to fuel my half marathon PB last year — 12 minutes faster! 10/10."
"Consistent subscriber of the STYRKR electrolytes. The ingredient quantities are better than any other — but they actually taste pleasant."
"Taste really good and keep me fully fuelled even on the longest days on the bike."
"STYRKR is absolutely incredible — couldn't recommend it more!"
"Good tasting, easy to use, and swift delivery."
"Very tasty and very easy on the stomach."
"Really enjoy the GEL50 and MIX90 products."
"Great on the digestive system, unlike other brands I've tried — stocked up ready for racing season."
"Great products and friendly customer service. No fake flavours — high carb in less volume, and great bundle deals."
Similar to Haribo. Engineered like race fuel.
A gel is often 30/50g down in one sticky hit, all at once. CEL50 is five 10g-carb blocks you control. Chew at your own pace, take exactly what you need, save the rest for later.
The Gel Way
- All-or-nothing. Slam the whole 30g in one go
- Can't dose to how you actually feel
- Half-used = prone to spillage
- Tear, squeeze, gag, bin the wrapper
- One big sugar hit, straight to your gut
The CEL50 Way
- Five 10g-carb blocks — take one at a time
- Dose to the climb, the pace, the moment
- Reseal the pack and save the rest
- Just chew — your pace, no mess, no faff
- Spread the load — far gentler on your stomach
How CEL50 stacks up.
The all-in-one carb + electrolyte chew, against the UK's leading energy chews. Verified specs, verified prices.
Carbs per pack
50g
More fuel than any leading UK chew.
Sodium per pack
267mg
Carbs and electrolytes in one. Built for heat and salty sweaters — match it to your sweat rate.
Carbs per piece
10g
Five even blocks per pack. Dose in 10g increments, on your terms.
Carbs per £1
22.5g
At each brand's best UK price. CEL50 first subscription delivery: 20% off — £39.99 a box.
- Carbs + electrolytes in one — 267mg sodium, no separate salt tabs to carry
- Subscribe & Save: 20% off your first delivery, then 15% ongoing
Prices in GBP, verified July 2026 from manufacturer pages (scienceinsport.com, enervit.com, eu.clifbar.com, veloforte.com), cross-checked with UK retailers. Competitor specs are their published figures; Veloforte electrolytes as stated by the brand (95mg sodium + 50mg potassium); Clif sodium derived from the EU salt declaration. Carbs per £1 at each brand's best verified UK price;
IMAGEWild Berry
IMAGECitrus Fruits
Recommended by top and everyday athletes
We have a growing worldwide roster of multi-discipline athletes who use our products during training and in competition, as well as a healthy community of everyday athletes. We know our products make a difference, because they use them when it matters most.
★★★★★
“Was able to trial these out with a marathon last week. So easy and quick to use and no sickly feeling make these a must for future.”
Tom R.Marathon runner
Pre-launch Testing
★★★★★
“Tested these pre-launch. Took two packs on a two hour cycle and popped one every 20 minutes. No leg cramps and felt very good!”
Ricky V.Casual Cyclist
Pre-launch Testing
Fuel the whole race day.
CEL50 for gradual carbs, GEL50 for the sharp hits, SLT07 for hydration. The full STYRKR race-day system bundled for you.
Questions, answered.
A new product means new questions. We've answered the most common questions about CEL50 below, so you can focus on what matters: performing at your best.
Subscribers save 20% on their first order and 15% on every delivery after, choose their own refill cadence, and can skip, swap flavours, pause or cancel anytime from their account.
Yes — by design. Carbohydrate is the most efficient fuel for endurance exercise, and CEL50 gives you 50g of fast-acting glucose split into five 10g chews you take one at a time — race fuel for hard sessions, not an everyday snack.
Because it's engineered fuel, not confectionery. CEL50 is 50g of fast-acting glucose in five controllable 10g chews — pectin-set and pH-balanced to sit easy on a working gut. On subscription an 18-pack works out at £2.36 per 50g of carbs — less per gram than CLIF Bloks.
Chew one 10g block every 12–15 minutes from the start of your session, dialled up or down to the climb, the pace and your stomach. Five blocks per pack to dose across the effort.
Yes. Change your delivery frequency, next ship date, flavours or pack size in your account portal in a few taps — no emails, no waiting.
CEL50 is vegan-friendly and gluten-free — pectin-set, no gelatine. Full ingredient and allergen information is on every pack.
You're covered by our 30-day money-back guarantee. If CEL50 doesn't work for you, contact us and we'll make it right — no quibbles.
UK orders ship next working day from our UK warehouse. Delivery options, free-shipping thresholds and international rates are shown at checkout.
One flavour. Three fuels. CEL50 + GEL50 + SLT+.
Pick Wild Berry or Citrus and get the full race-day system in one bundle — CEL50 chews for gradual carbs, GEL50 for the sharp hits, SLT+ for hydration.
Pick your flavour
CEL50 Chewable carbs
- 50g fast-acting carbs per pack
- 5 × 10g blocks — you control the dose
- Added sodium + potassium
GEL50 Fast gel hit
- Our best-selling dual-carb energy gel
- The fast hit for key moments
- No chewing — squeeze and go
SLT+ Electrolyte drink
- High-sodium electrolyte hydration
- For long, hot, sweaty sessions
- Mixes into any bottle
Free UK shipping over £50 · 30-day guarantee
