Shoppers avoiding sugars
If you want a drink with no sugars, check the nutrition panel for the exact variant. A ‘no added sugars’ description is a different claim: the drink may still contain naturally occurring sugars.
Who these choices suit
Shoppers comparing caffeine by can
Can size matters when planning how much caffeine you will consume at once. Red Bull states 80mg per 250ml Sugarfree can, while Monster states 150mg per 500ml Ultra can; check the label of any different variant.
Multipack delivery shoppers
Compare the number and size of cans with what you intend to order, then check the live listing for stock and delivery to your postcode and chosen slot.
What to check before ordering
Start with the sugar declaration for the exact drink, then check caffeine per can and whether the pack fits your order.
| Priority | What to check | Your needs |
|---|---|---|
| Sugars and sweeteners | Read sugars per 100ml or per can on the exact nutrition panel. Check the ingredients if particular sweeteners matter to you; ‘no added sugars’ does not necessarily mean zero sugars. | I want to know whether I am avoiding all sugars or only added sugars. For example, the listed PerfectTed Very Cherry drink says no added sugars but declares 3.7g sugars per 100ml. |
| Caffeine per can | Check both caffeine per 100ml and the can volume, or use a stated per-can amount. Do not carry a figure across flavours or variants. | A smaller single serving may fit my plans better. Red Bull states 80mg caffeine in a 250ml Sugarfree can; Monster states 150mg in a 500ml Ultra can. |
| Pack and delivery | Compare can count and total volume. Check the live stock message after entering your delivery details and selecting a slot. | I want a pack I can add to this grocery order, rather than choosing by the product image alone. Tesco marked its Relentless Zero Sugar Raspberry 4x500ml listing out of stock when checked, so I would confirm its current status. |
Common ordering mistakes
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Assuming sugar-free means less caffeine
Sugar and caffeine are separate attributes. Red Bull states that a 250ml Sugarfree can has no sugars and contains 80mg caffeine; Monster describes its 500ml Ultra can as zero sugar with 150mg caffeine.
Check caffeine for the exact can, and account for other drinks or foods containing caffeine when planning your intake.
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Assuming every ‘no added sugars’ drink is sugar-free
A drink can contain sugars from its ingredients without added sugars. The listed PerfectTed Matcha Energy Very Cherry declares 3.7g sugars per 100ml.
If your aim is zero sugars, use the nutrition panel rather than the front-of-pack phrase alone.
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Treating a search result as a deliverable item
A product listing does not establish that a pack can be delivered with your order. Tesco marked its Relentless Zero Sugar Raspberry multipack out of stock when checked.
Enter your postcode and delivery slot, then confirm the pack’s live stock status before relying on it for the order.
Brand and product-line references
These details apply to the named drinks, not to every energy drink made by each brand.
Red Bull
For Red Bull Sugarfree, Red Bull states that a 250ml can contains 80mg caffeine and that sweeteners replace its sugars.
- The stated per-can caffeine amount makes the 250ml Sugarfree format straightforward to compare with larger cans.
- Sugarfree is not caffeine-free; Red Bull identifies sucralose and acesulfame K as sweeteners in this drink.
Monster
Monster describes its 500ml Ultra drink as zero sugar, with 150mg caffeine and a light citrus flavour.
- The stated 500ml format and caffeine amount help shoppers compare a larger single can.
- Check the label of the exact Monster variant: the general Ultra figure should not be assumed to describe every Ultra or Zero Sugar product.
Relentless
Tesco lists Relentless Zero Sugar Raspberry in a 4x500ml pack and declares 0g sugars per 500ml can.
- The Tesco listing states both the can size and sugars per can.
- That listing was marked out of stock when checked; confirm availability for your delivery order.
Joybuy energy-drink options
These packs include zero-sugar drinks in 250ml and 500ml cans, plus a no-added-sugars option that still contains sugars. Check the exact can’s caffeine and nutrition information alongside pack size when choosing.
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Red Bull Sugarfree 24 x 250ml
For an order needing multiple smaller cans, this pack contains 24 x 250ml. The product information states 0g sugars and 80mg caffeine per can. It contains sweeteners and a source of phenylalanine; check the ingredients and warnings if these matter to you. Confirm stock for your delivery slot.
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Red Bull Zero 4 x 250ml
This four-can pack offers a smaller pack quantity than the listed Red Bull Sugarfree 24-pack. Its product information states 0g sugars and 32mg caffeine per 100ml. It contains sweeteners, including sucralose, cyclamate and saccharin; read the can’s warnings and check delivery availability before ordering.
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PerfectTed Matcha Energy Very Cherry 4 x 250ml
This four-can pack is labelled no added sugars, not zero sugar: its nutrition information declares 3.7g sugars per 100ml. The product information states 80mg caffeine per 250ml can. If avoiding all sugars is your aim, account for the declared sugars before adding it to your order.
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Monster Original Green Zero Sugar 4 x 500ml
This four-pack has 500ml cans, with 0g sugars per can stated in its product information. It contains sucralose and acesulfame K. If caffeine per can determines your choice, check the exact can label rather than applying the figure for Monster Ultra to Original Green Zero Sugar.
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Monster Ultra White 12 x 500ml
This pack contains twelve 500ml cans, and its product information states 0g sugars per can. Check the caffeine declaration on the exact Ultra White can before choosing it for a planned caffeine amount; the stated figures for Ultra White and Monster’s general Ultra product differ. Confirm the pack can be delivered with your order.
Questions about sugar, caffeine and delivery
Does ‘no added sugar’ mean an energy drink has no caffeine?
No. Sugar and caffeine are separate product details. Red Bull says its Sugarfree drink contains no sugars and 80mg caffeine per 250ml can; Monster describes its 500ml Ultra drink as zero sugar with 150mg caffeine. Check both declarations for the exact drink you intend to order.
Can a no-added-sugars energy drink still contain sugars?
Yes. ‘No added sugars’ does not necessarily mean zero sugars. For example, the listed PerfectTed Matcha Energy Very Cherry drink is described as having no added sugars but declares 3.7g sugars per 100ml on its nutrition information.
What caffeine warning should I check on a UK drink label?
The Department of Health and Social Care’s summary of UK labelling rules says that drinks other than tea or coffee containing more than 150mg caffeine per litre require a high-caffeine warning stating that they are not recommended for children or pregnant or breast-feeding women. The label must also give caffeine in milligrams per 100ml.
Does an announced age restriction already apply to online orders across the UK?
Do not treat the announced England measure as a current UK-wide rule. In July 2026, the Department of Health and Social Care and Department for Education announced an intended April 2027 start, subject to Parliamentary approval, for an England restriction on sales to under-16s of drinks other than tea or coffee containing more than 150mg caffeine per litre. The announced scope includes websites; check the retailer’s current requirements and the rules applicable where the order is placed.