Night-shift workers cutting back on sugar
If you buy a canned drink for your break, compare sugars and caffeine for the whole can. A sugar-free name tells you neither how much caffeine it contains nor everything on its nutrition panel.
Who is this for?
Workers planning to sleep after their shift
If you expect to sleep after work, the caffeine in one can and any coffee or tea you also drink matter to the choice. NHS night-shift guidance advises minimising caffeine in the evening and paying attention to sleep routines.
Shoppers stocking up for breaks
When choosing a multipack, check the number of cans, each can's size and its caffeine content. A larger pack does not change what you consume if you drink a whole can at a time.
What should you check?
Start with the nutrition panel and caffeine per can, then consider the timing of your break and whether you also need food.
| Priority | What to check | Your needs |
|---|---|---|
| Sugar and serving | Read sugars and energy for the whole can, alongside its size. Check the exact flavour and format rather than relying on the range name. | I'm reducing sugar, so the amount in the can I actually drink matters. Tesco lists 0.5g sugars and 6kcal per 250ml can for Lucozade Alert Zero Sugar Mango Peachade. |
| Caffeine per can | Compare caffeine in mg for a complete can and count other caffeine-containing drinks. Red Bull states 80mg per 250ml Sugarfree can; Monster Energy UK states 150mg per 500ml Ultra can. | A smaller single serving may fit my plans better if I also drink coffee or tea. A zero-sugar label does not tell me the caffeine amount. |
| Sleep plans | Consider when you plan to sleep and when you would drink the can. NHS night-shift guidance advises minimising caffeine in the evening. | If I'm nearing the end of a shift, I want to decide whether to have caffeine at all, not just which can to buy. |
| Food for the break | Plan a meal or snack separately from the drink. Barking, Havering and Redbridge University Hospitals NHS Trust advises regular meals or lighter meals and snacks during night-shift breaks. | When I'm hungry, I need food for my break; choosing a drink is a separate decision. |
| Multipack format | Check the can count, size of each can and caffeine per can. For a zero-sugar choice, read the nutrition panel for the particular variant. | If I'm stocking up for several shifts, I want a pack format that suits how many cans I intend to use without overlooking the serving in each one. |
Common buying mistakes
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Assuming zero sugar means little caffeine
Red Bull lists 80mg caffeine per 250ml Sugarfree can, while Monster Energy UK lists 150mg per 500ml Ultra can. The sugar description does not establish the caffeine serving.
Read caffeine in mg per whole can and include other caffeine-containing drinks when considering your intake.
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Using an energy drink instead of eating
A caffeinated drink does not take the place of a meal or snack during a long shift. Barking, Havering and Redbridge University Hospitals NHS Trust advises planning regular meals or lighter meals and snacks for breaks.
Choose food for the break first, then make a separate decision about whether you want a caffeinated drink.
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Choosing a multipack without checking each can
Pack count alone does not show the size or caffeine content of one serving.
Compare the can size and caffeine per can before deciding which multipack fits your breaks.
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Reading “sugar free” as exactly 0g per can
Tesco's panel for Lucozade Alert Zero Sugar Mango Peachade lists 0.5g sugars per 250ml can.
Check the nutrition panel for the exact flavour and can size if the amount of sugar matters to your choice.
Brands and retailers to compare
Compare the particular drink and serving, rather than assuming every product in a brand's range has the same nutrition or caffeine figures.
Red Bull
Red Bull Sugarfree is a 250ml option for shoppers seeking a smaller can.
- Red Bull states that a 250ml Sugarfree can contains 80mg caffeine.
- Sugarfree does not mean caffeine-free; check when you would drink it relative to planned sleep.
Monster
Monster Energy UK describes Ultra as a zero-sugar drink in a 500ml can.
- Monster Energy UK states 150mg caffeine for that 500ml Ultra can.
- Check the exact variant: the 500ml Ultra figure does not establish the caffeine content of every Monster drink.
Lucozade
Tesco lists Lucozade Alert Zero Sugar Mango Peachade in a 250ml can.
- Tesco lists 80mg caffeine and 6kcal per can for this flavour.
- Its Tesco nutrition panel also lists 0.5g sugars per can; check the exact product rather than assuming an absolute 0g serving.
Relentless
Relentless White Citrus is a different energy-drink reference point, not an interchangeable zero-sugar choice.
- Relentless lists caffeine at 0.03% for White Citrus.
- Its ingredient list includes sucrose as well as sweetener, so check the exact can if reducing sugar is your aim.
Tesco
Tesco lists sugar-free and zero-sugar energy drinks, including Red Bull Sugar Free and Monster Ultra.
- Individual product pages can help you compare can size and nutrition.
- Read the label on the product you receive, since food products can be reformulated.
Sainsbury's
Sainsbury's lists energy drinks including zero-sugar options.
- Its stated policy explains age checks for products carrying a warning that they are not recommended for children.
- Sainsbury's says it does not sell high-caffeine energy drinks to customers under 16; check its requirements when arranging a purchase or delivery.
Joybuy product options
These options cover smaller Red Bull cans and Monster zero-sugar multipacks for shoppers planning night-shift breaks. Compare the stated serving details for each product rather than treating the packs as equivalent.
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Red Bull Sugarfree 250ml, 12-pack
A 250ml can offers a defined serving for a break, with 12 cans in the pack. Red Bull states that Sugarfree contains 80mg caffeine per 250ml can; include other caffeine drinks when planning your intake.
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Monster Energy Ultra Zero Sugar 6 × 4 × 500ml
This multipack is for shoppers deliberately choosing 500ml cans. Monster Energy UK states that a 500ml Ultra can has zero sugar and 150mg caffeine; consider the whole-can amount and your planned sleep before drinking one.
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Monster Energy Green Zero Sugar, 12 cans
The 12-can format is an option for buying drinks for several shifts. Check this Green Zero Sugar variant's can size, nutrition panel and caffeine per can before comparing it with Monster Ultra or deciding when to drink it.
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Red Bull Zero 250ml, 8-pack
This eight-pack offers another 250ml Red Bull variant for individual breaks. Check the Zero can's own nutrition panel and full-can caffeine amount; do not assume they are identical to Red Bull Sugarfree.
Questions about night-shift choices
Does zero sugar mean an energy drink is caffeine-free?
No. Red Bull states that Sugarfree contains 80mg caffeine per 250ml can, and Monster Energy UK states that Ultra contains 150mg per 500ml can. Check caffeine per whole can separately from the sugars line.
How should I compare a can with the coffee or tea I drink on shift?
Count caffeine from the energy drink alongside other sources, rather than assessing the can alone. The European Food Safety Authority's 2015 opinion considers intake from all sources and gives population-level conclusions that are not an individual target; the can's caffeine figure and your planned sleep remain practical checks.
Can an energy drink replace a night-shift meal or snack?
No. Barking, Havering and Redbridge University Hospitals NHS Trust advises regular meals or lighter meals and snacks during night-shift breaks. Plan food for the break and decide separately whether to have a caffeinated drink.
Will an under-16 shopper face an age check?
Sainsbury's says it does not sell high-caffeine energy drinks to customers under 16 and applies age verification to products marked as not recommended for children. Check the requirements of the retailer handling your purchase or delivery; that retailer policy is not a statement of one rule for every UK shop.