If you plan to sleep soon after a night shift, choose a cola explicitly labelled caffeine-free rather than assuming that “diet” or “zero sugar” means the same thing. If caffeine suits your timing, a zero-sugar variant is another option; if you prefer regular cola, compare the sugar in the whole can as well as per 100ml.
If you want cola with a snack but plan to sleep afterwards, look for “caffeine free” or “no caffeine” on the exact variant. The Health and Safety Executive notes that daytime sleep for shift workers is often lighter and shorter than night-time sleep; a zero-sugar label alone does not settle the caffeine question.
Compare the sugars figure per 100ml and for the amount you expect to drink. A zero-sugar choice addresses sugar in that drink, but you still need to decide separately whether its caffeine content fits your shift and planned sleep.
Check the full product name rather than choosing by brand alone: regular, zero-sugar and caffeine-free lines can differ. Tesco Groceries lists caffeine-free options from Coca-Cola and Pepsi alongside its own-label diet cola; check the particular pack and its label when buying.
Start with your planned sleep time, then compare sugar for the amount you will drink. Finally, check the exact variant and ingredients: neither the brand nor “diet” wording answers every question.
| Priority | What to check | Your needs |
|---|---|---|
| Caffeine and sleep timing | Look for an explicit “caffeine free” or “no caffeine” claim on the exact cola. Do not treat “zero sugar” as a caffeine statement. | I plan to sleep soon after work and want a cola without caffeine. Coca-Cola Zero Sugar Caffeine Free and Pepsi Max No Caffeine are examples identified as caffeine-free by their manufacturers. |
| Sugar in the drink | Read sugars per 100ml and per serving or container. Pepsi UK lists 4.5g sugars per 100ml and 15g per 330ml serving for Pepsi Classic; Coca-Cola Great Britain and Pepsi UK describe their respective caffeine-free zero-sugar lines as having no sugar. | I want to compare regular and zero-sugar cola for the amount I will actually drink. The NHS advises cutting down on sugary fizzy drinks, while the nutrition panel lets me compare specific packs. |
| Exact formula | Distinguish the standard, zero-sugar and caffeine-free names within a brand. If sweeteners or a source-of-phenylalanine statement matter to you, read the ingredients and label on that variant. | A familiar cola name is useful, but I need to know which version I am picking up. I would check its formula rather than assume all cans from the same brand have the same caffeine or sugar content. |
A zero-sugar cola can still contain caffeine, which matters when you are choosing what to drink before planned post-shift sleep. The Health and Safety Executive identifies sleep and fatigue as important shift-work considerations.
Check the complete variant name for “caffeine free” or “no caffeine”, then confirm it on the pack.
The per-100ml figure may not be the amount you drink. Pepsi UK lists 4.5g sugars per 100ml for Pepsi Classic and 15g in its stated 330ml serving.
Use both the per-100ml and per-serving figures, taking the size of your chosen container into account.
These examples help distinguish product lines; a brand name alone does not establish the sugar or caffeine content of a particular pack.
Coca-Cola Great Britain identifies Coca-Cola Zero Sugar Caffeine Free as a separate no-sugar, no-caffeine variant.
Pepsi UK describes Pepsi Max No Caffeine as having no sugar or caffeine, separately from Pepsi Classic.
Tesco Groceries lists its own-label caffeine-free diet cola alongside caffeine-free Coca-Cola and Pepsi options.
These cans include caffeine-free choices for a shift close to planned sleep and other colas for times when caffeine fits your plans. Compare the exact variant, ingredients and 330ml serving information before choosing.
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A caffeine-free Diet Coke option if you want cola near your planned post-shift sleep. The pack contains 24 × 330ml cans; the listing gives 0g sugars per 330ml. Check the label for sweeteners and its source-of-phenylalanine statement if these matter to you.
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A caffeine-free Pepsi Max choice when you want to avoid caffeine before planned sleep. The pack contains 24 × 330ml cans, and the listing gives 0g sugars per 330ml. Check the label for sweeteners and its source-of-phenylalanine statement if relevant to your choice.
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Consider this Diet Coke when you want a zero-sugar cola and caffeine fits your shift timing. The pack contains 24 × 330ml cans; the listing gives 0g sugars per 330ml and includes caffeine in the ingredients. Check the pack if the caffeine amount matters to you.
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This Pepsi Max is a zero-sugar cola option for a shift when caffeine fits your plans, not a substitute for the Caffeine Free variant. The pack contains 24 × 330ml cans; the listing gives 0g sugars per 330ml and includes caffeine in the ingredients. Check the pack if you need its caffeine amount.
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This Coca-Cola Zero Sugar is an option when you want to avoid sugar in your cola and caffeine suits your timing. The pack contains 24 × 330ml cans; the listing gives 0g sugars per 330ml and includes caffeine in the ingredients. Check the exact pack if its caffeine amount affects your choice.
No. Check the exact variant for an explicit caffeine-free claim. Coca-Cola Great Britain identifies Coca-Cola Zero Sugar Caffeine Free separately, and Pepsi UK distinguishes Pepsi Max No Caffeine from other Pepsi Max products.
If you want cola while avoiding caffeine before planned sleep, choose a variant explicitly labelled caffeine-free. The Health and Safety Executive notes that daytime sleep for shift workers is often lighter and shorter than night-time sleep; the product label is the practical way to distinguish the cola you are buying.
Compare sugars for both 100ml and the amount you expect to drink. Pepsi UK lists 4.5g sugars per 100ml and 15g per 330ml serving for Pepsi Classic, while Coca-Cola Great Britain and Pepsi UK identify their respective caffeine-free zero-sugar lines as having no sugar. Check caffeine separately.
Yes, particularly if sweeteners or a source-of-phenylalanine statement matter to you. Read the ingredients on the exact pack rather than assuming that every zero-sugar or caffeine-free cola uses the same formula.