For a second-home supply, choose an exact sugar-free or zero-sugar product rather than relying on a reduced-sugar description. Red Bull Sugarfree has 80 mg caffeine in a 250 ml can, according to Red Bull, while Monster Energy lists 150 mg in a 500 ml Monster Ultra can: the smaller can suits adults who want less caffeine per can, and the larger one suits those who want a 500 ml drink. Check who may have access to the supply and account for caffeine from other drinks.
Individual cans make it easier to choose a portion for each stay. For the two manufacturer examples, the decision is between Red Bull Sugarfree at 250 ml and 80 mg caffeine per can and Monster Ultra at 500 ml and 150 mg per can.
Consider whether children, pregnant guests or people sensitive to caffeine might reach the supply. Sugar-free wording does not remove caffeine, and a rule about retail sales should not be mistaken for a rule about storing cans at home.
Monster Energy lists several UK Ultra zero-sugar flavours, while Red Bull describes a sugar-free range. Check the exact flavour and can rather than assuming every drink from either brand has the same ingredients or caffeine amount.
Start with the exact drink’s sugar declaration, then compare caffeine per can and the pack quantity you will use between visits.
| Priority | What to check | Your needs |
|---|---|---|
| Sugar status | Check the exact flavour’s sugar declaration and ingredients. Red Bull describes Sugarfree as made with sweeteners instead of sugars; Monster Energy describes its 500 ml Ultra example as zero sugar. | I want cans without added sugar, not a drink whose name or flavour merely sounds similar to one I have checked. |
| Caffeine per can | Compare amounts for the whole can, not just can size. Red Bull states 80 mg per 250 ml Sugarfree can; Monster Energy states 150 mg per 500 ml Ultra can. | A smaller can matters to me if guests want a lower caffeine amount in each individual drink. I also need to consider their other sources of caffeine. |
| Guest access | Read the exact can’s caffeine warning and decide where adult drinks will be kept. The UK government has announced an England-only ban on retail sales of high-caffeine energy drinks to under-16s from April 2027. | If younger guests can reach the cupboard, I want a supply intended for adults kept separately rather than assuming zero sugar makes it suitable for them. |
| Replenishment | Compare the number of cans and volume per can, then check the pack’s storage instructions and best-before date. Tesco has listed branded sugar-free and zero-sugar multipacks, but listings can change. | I would rather bring enough individually portioned cans for planned stays than leave a pack whose date or storage instructions I have not checked. |
A drink can contain both. Relentless lists sucrose and sucralose in its Guava ingredients, so the presence of a sweetener alone does not settle whether that flavour fits a no-added-sugar supply.
Check the ingredients and sugar declaration for the exact can or flavour before buying.
Red Bull reports 80 mg caffeine in a 250 ml Sugarfree can; Monster Energy reports 150 mg in a 500 ml Ultra can. Both figures describe an individual can, not a whole multipack.
Choose the can size with its caffeine amount in mind, particularly if guests may also drink coffee, tea or other caffeinated products.
A zero-sugar label does not address who may consume the drink. The UK government has announced a ban on retail sales of high-caffeine energy drinks to under-16s in England from April 2027; that announcement concerns sales, not simply keeping cans in a second home.
Manage access to drinks intended for adults, and check the current rules if you sell or supply drinks as part of a business.
Use these examples to narrow down exact drinks and pack formats; a brand or retailer name alone does not establish the contents of every can.
Red Bull Sugarfree is a 250 ml option for adults who prefer a smaller individual can.
Monster Ultra offers a 500 ml zero-sugar example for adults who want a larger can.
Check Relentless flavours individually when shopping for a no-added-sugar supply.
Tesco’s energy-drinks category has listed branded sugar-free and zero-sugar multipacks relevant to planned replenishment.
These are individually portioned energy-drink multipacks in several can sizes. For a no-added-sugar supply, check the exact can’s sugar declaration and caffeine information before leaving a pack for guests.
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The 500 ml cans offer a larger individual portion for a second-home supply. Monster Energy states that its 500 ml Ultra example contains 150 mg caffeine; check the exact pack label and manage access for guests who should avoid caffeine.
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This twelve-can pack provides 355 ml portions. Check the exact can’s sugar declaration, caffeine amount and warnings to decide whether it fits the adults using the second home.
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This pack supplies smaller individual cans for planned stays. Red Bull states that Sugarfree contains 80 mg caffeine per 250 ml can; check the pack date and keep drinks intended for adults away from younger guests.
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A four-pack may suit a shorter stay where 250 ml portions are wanted. Check the exact can’s sugar declaration and caffeine amount rather than applying figures from Red Bull Sugarfree to this distinct product.
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This four-pack offers 500 ml cans in the Original Green Zero Sugar variant. Check its own caffeine declaration before comparing it with Monster Ultra; the two product names do not establish identical formulations.
No. Red Bull states that Sugarfree contains 80 mg caffeine per 250 ml can, and Monster Energy states that its 500 ml Ultra example contains 150 mg. Check sugar wording and caffeine separately on the exact drink.
Manage access to drinks intended for adults; keeping a can at home is not the same as selling it. In a July 2026 announcement, the Department of Health and Social Care and Department for Education said retail sales of high-caffeine energy drinks to under-16s in England would be banned from April 2027. That England-specific sales announcement should not be treated as the rule for Scotland, Wales or Northern Ireland.
No: sugar-free does not mean caffeine-free. NHS pregnancy guidance says caffeine from all sources, including energy drinks, counts towards its 200 mg daily limit. Check the can’s caffeine amount alongside other drinks and follow individual clinical advice.
Keep cans sealed, check their best-before dates and follow the storage instructions on the exact pack. Before each stay, check what remains and keep drinks intended for adults where younger guests cannot help themselves.
No. Check the exact product’s ingredients and sugar declaration: Relentless lists sucrose in its Guava drink, while Red Bull describes Sugarfree as made with sweeteners instead of sugars. A retailer’s category listing is useful for finding candidates, not for assuming every listed drink has the same formulation.