Late-night viewers avoiding caffeine
A No Caffeine or Zero Caffeine variant addresses this requirement without assuming that every diet cola is caffeine-free. Check the sugar information separately if both details matter.
Who is choosing?
Households sharing a film
A 2L bottle or multipack of cans offers different ways to serve a group. Compare the sugar figure, ingredients and amount in the pack before deciding what suits the occasion.
What should you check?
Start with the sugar figure, then check caffeine and sweeteners on the same product; pack format matters when several people will be drinking it.
| Priority | What to check | Your needs |
|---|---|---|
| Sugar | Read the nutrition panel for the exact variety and serving size. Sainsbury's lists 0g sugars per 250ml for Pepsi MAX, while its standard Cola listing shows 10.7g per 250ml. | I want cola for the film while choosing a bottle or can with little or no labelled sugar. |
| Caffeine | Look for an explicit No Caffeine or Zero Caffeine designation and recheck the ingredients. Tesco Groceries and Sainsbury's list caffeine-free variants alongside colas whose ingredients include caffeine. | For a late film, I would rather choose a cola explicitly identified as caffeine-free than rely on the word “diet”. |
| Sweeteners | Compare ingredient lists on the specific products. Sainsbury's lists aspartame and acesulfame K in Pepsi MAX; its own-label Diet Cola lists sucralose and acesulfame K. Check any phenylalanine statement on the pack. | The ingredient list matters to me, even when two colas have similar sugar information. |
| Pack format | Compare the total volume and whether the drink comes in a sharing bottle or individual cans. Check how much your group is likely to serve. | I may prefer a bottle to pour from, or separate cans that guests can take individually. |
Common mix-ups
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Assuming diet or zero sugar means caffeine-free
Checked Coca-Cola Zero Sugar, Pepsi MAX and supermarket diet-cola listings include caffeine, while separately named no-caffeine variants are available.
If avoiding caffeine matters, pick a product explicitly labelled No Caffeine or Zero Caffeine and check its current label.
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Assuming low-sugar colas have the same ingredients
Sweeteners differ between checked branded and own-label recipes. Some products containing aspartame also display a phenylalanine statement.
Read the ingredients and any warning on the exact pack, especially if a particular declaration matters to you.
Brand and retailer references
Coca-Cola
Tesco Groceries lists 2L Coca-Cola Zero Sugar and Coca-Cola Zero Sugar Zero Caffeine bottles; Sainsbury's also lists Diet Coke No Caffeine 2L.
- The named Zero Caffeine and No Caffeine variants give shoppers an explicit caffeine-free choice.
- Regular Coca-Cola Zero Sugar lists caffeine flavouring. Check sweeteners and pack warnings on the chosen variant.
Pepsi
Sainsbury's lists Pepsi MAX No Sugar, Diet Pepsi and Pepsi MAX No Caffeine No Sugar in 2L bottles.
- Its Pepsi MAX No Caffeine No Sugar listing identifies both no caffeine and 0g sugars per 250ml.
- The checked regular Pepsi MAX and Diet Pepsi ingredient lists include caffeine; their sweeteners also need checking on the pack.
Asda
ASDA Groceries lists an own-label Diet Cola in a 2L bottle.
- The listing shows under 0.5g sugars per 100ml and names its sweeteners.
- Its ingredients include caffeine, so the diet designation does not meet a no-caffeine requirement.
Sainsbury's
Sainsbury's lists own-label Diet Cola and Cola Zero in 2L bottles.
- The checked listings show under 0.5g sugars per 100ml.
- Both ingredient lists include caffeine, sucralose and acesulfame K; check the exact variety rather than assuming either is caffeine-free.
Tesco
Tesco Groceries provides product listings for both Coca-Cola Zero Sugar 2L and Coca-Cola Zero Sugar Zero Caffeine 2L.
- The separate listings make it possible to distinguish the regular and caffeine-free Coca-Cola variants.
- These are Coca-Cola products sold by Tesco, not a comparison of Tesco own-label cola.
Joybuy cola options
These Joybuy packs cover zero-sugar cola with caffeine and explicitly caffeine-free diet or zero-sugar cola. Choose between a large bottle bundle and individual cans according to how you plan to serve your movie-night group.
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Coca-Cola Zero Sugar 2L × 6
A six-bottle sharing pack when the group wants zero-sugar cola and caffeine is acceptable. The Joybuy product description identifies caffeine and lists aspartame and a source of phenylalanine; check the current pack if that declaration matters to you.
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Diet Coke No Caffeine 24 × 330ml
Individual cans for a group wanting a diet cola explicitly identified as caffeine-free. The product description reports zero sugars and lists aspartame and acesulfame K; check the current pack for its phenylalanine statement if relevant.
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Pepsi MAX Caffeine Free 24 × 330ml
A 24-can format for a group that wants both zero sugar and no caffeine. The product description lists aspartame and acesulfame K and notes a source of phenylalanine; check the current pack if relevant.
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Pepsi MAX 24 × 330ml
Individual cans for a group choosing zero-sugar cola where caffeine is acceptable. The product description reports zero sugars and lists caffeine, aspartame and acesulfame K; check the pack for its phenylalanine statement if relevant.
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Coca-Cola Zero Sugar 24 × 330ml
A 24-can sharing pack for people choosing zero-sugar cola without a caffeine-free requirement. The product description reports zero sugars and identifies caffeine and aspartame; check the current pack for its phenylalanine statement if relevant.
Questions about diet cola
Is diet cola automatically caffeine-free?
No. Checked listings for Coca-Cola Zero Sugar, Pepsi MAX, Diet Pepsi, Asda Diet Cola and Sainsbury's Diet Cola or Cola Zero include caffeine. If you want to avoid it, choose a variant explicitly labelled No Caffeine or Zero Caffeine and check its current ingredients.
Does “diet” mean something different from “zero sugar” on these colas?
The words alone do not establish the sugar figure or recipe. Check the exact nutrition panel: Sainsbury's lists 0g sugars per 250ml for Pepsi MAX, while its own-label Diet Cola and Cola Zero listings show under 0.5g sugars per 100ml. Caffeine and sweeteners also need checking separately.
Why does a cola label mention phenylalanine?
That statement is relevant to products containing aspartame. GOV.UK food-labelling guidance specifies the wording when aspartame is named in the ingredients list. Check the current pack of the cola you choose rather than assuming that every diet or zero-sugar recipe uses the same sweeteners.