Which fizzy drinks have caffeine? Fanta, Sprite, Irn-Bru, Dr Pepper and more

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Which fizzy drinks have caffeine? Fanta, Sprite, Irn-Bru, Dr Pepper and more

Fanta, Sprite, 7UP Zero Sugar and Tango Orange are caffeine-free. Irn-Bru, Dr Pepper, Mountain Dew and the colas (Coca-Cola, Diet Coke, Pepsi) contain caffeine. Irn-Bru is one of the few with an official figure: 30 mg of caffeine in a 330 ml can, according to the IRN-BRU FAQ. A can of cola has about 40 mg (NHS).

Key points
• Caffeine-free: Fanta, Fanta Zero Sugar, Sprite, Sprite Zero Sugar, 7UP Zero Sugar, Tango Orange.
• Contain caffeine: Irn-Bru, Dr Pepper, Mountain Dew, Coca-Cola, Diet Coke, Pepsi and Pepsi Max.
• Irn-Bru: 30 mg per 330 ml can; Sugar Free and XTRA have the same (IRN-BRU FAQ).
• Coca-Cola: 34 mg per 330 ml can; Diet Coke: 46 mg per can (Coca-Cola GB).
• Many makers do not state the milligrams on the pack. Check the ingredients for "caffeine".

Table of contents

Which fizzy drinks have caffeine? At a glance

Drink Caffeine? Amount (where officially stated) Source
Fanta and Fanta Zero Sugar No caffeine-free Coca-Cola GB
Sprite and Sprite Zero Sugar No caffeine-free Coca-Cola GB
7UP Zero Sugar No "Zero Caffeine" Tesco
Tango Orange No no caffeine in ingredients Brakes
Irn-Bru (also Sugar Free and XTRA) Yes 30 mg per 330 ml can IRN-BRU FAQ
Dr Pepper Yes not stated Tesco
Mountain Dew Yes not stated Morrisons
Coca-Cola Yes 34 mg per 330 ml can Coca-Cola GB
Diet Coke Yes 46 mg per can Coca-Cola GB
Pepsi and Pepsi Max Yes not stated Tesco

Sources: Coca-Cola Great Britain, "What is caffeine?" FAQ page; IRN-BRU FAQ; UK retailer product listings (Tesco, Morrisons, Brakes). Checked October 2026. Recipes can change, so check the can or bottle you buy.

For the colas in more detail, see How much caffeine is in cola?, Does Coke Zero have caffeine? and Does Pepsi Max have caffeine? More: How much caffeine is too much? · Caffeine pouches in the UK

Does Fanta have caffeine?

No. Coca-Cola Great Britain lists Fanta and Fanta Zero Sugar among its caffeine-free drinks.

Does Sprite have caffeine?

No. Coca-Cola Great Britain lists Sprite and Sprite Zero Sugar as caffeine-free.

Does Irn-Bru have caffeine?

Yes. The IRN-BRU FAQ says there are 30 mg of caffeine in a 330 ml can, which works out at about 9 mg per 100 ml (our calculation). IRN-BRU Sugar Free and IRN-BRU XTRA contain the same amount as regular Irn-Bru. The ingredients list "Flavourings (Including Caffeine, Ammonium Ferric Citrate & Quinine)" (Brakes listing).

Irn-Bru Energy is different: it has more caffeine, and the FAQ says the high caffeine content is shown on the pack. The FAQ does not give the amount, so check the can. The same FAQ says a cup of tea has roughly double, and a cup of coffee roughly triple, the caffeine of a can of Irn-Bru.

Does Dr Pepper have caffeine?

Yes. The UK ingredients list "Flavourings including Caffeine", and the Tesco listing says "Contains caffeine" (Tesco). Coca-Cola Ireland's brand page lists caffeine in the flavourings of both Dr Pepper and Dr Pepper Zero. We found no official UK milligram figure, so the amount is not stated here.

Does Tango have caffeine?

Tango Orange has no caffeine in its ingredients list (Brakes listing). We checked Tango Orange only, so read the ingredients on other flavours.

Does 7UP have caffeine?

7UP Zero Sugar is caffeine-free: the Tesco listing shows "Zero Caffeine", and caffeine is not in the ingredients (Tesco). We checked 7UP Zero Sugar only, so read the label on other versions.

Does Mountain Dew have caffeine?

Yes. Mountain Dew sold in the UK lists "Flavourings (Including Caffeine)" (Morrisons), and so does Mountain Dew No Sugar Citrus Blast (Ocado listing). Neither listing gives a milligram figure.

Colas: Coke, Diet Coke and Pepsi

Coca-Cola Great Britain gives 34 mg of caffeine for a 330 ml can of Coca-Cola and 46 mg for a can of Diet Coke. Pepsi and Pepsi Max list caffeine in their ingredients, but no milligram figure is stated on the UK pack. Caffeine-free versions exist: Coca-Cola Zero Sugar Zero Caffeine, Diet Coke Caffeine Free (both listed by Coca-Cola GB) and Pepsi Max No Caffeine No Sugar.

Drink Serving Caffeine
Cola 1 can about 40 mg
Tea 1 mug about 75 mg
Energy drink 250 ml about 80 mg
Instant coffee 1 mug about 100 mg
Filter coffee 1 mug about 140 mg

Source: NHS.

Optimal Native caffeine pouches state the caffeine per pouch on the label: Morning Energy 200 mg, Daily Flow 75 mg and Evening Relax 0 mg, with no sugar.

How to check the label

  • Read the ingredients. Caffeine is often listed inside the flavourings, for example "Flavourings (Including Caffeine)".
  • Read the name. "Zero Sugar" or "No Sugar" is about sugar. Look for "No Caffeine", "Zero Caffeine" or "Caffeine Free".
  • Look for a warning. In the UK, drinks with more than 150 mg of caffeine per litre must say "High caffeine content. Not recommended for children or pregnant or breast-feeding women" and give the amount per 100 ml. Below that level, the pack may not state the caffeine at all.

Every caffeinated drink counts towards your daily total. For healthy adults, up to 400 mg of caffeine a day is unlikely to cause adverse effects, and the limit in pregnancy is 200 mg a day (FSA and FSS, 2024).

FAQ

Does Fanta have caffeine?
No. Coca-Cola GB lists Fanta and Fanta Zero Sugar as caffeine-free.

Does Sprite have caffeine?
No. Coca-Cola GB lists Sprite and Sprite Zero Sugar as caffeine-free.

How much caffeine is in Irn-Bru?
30 mg in a 330 ml can, according to the IRN-BRU FAQ. Sugar Free and XTRA have the same amount. Irn-Bru Energy has more.

Does Dr Pepper have caffeine?
Yes. Its UK ingredients list caffeine, but no official milligram figure is stated.

Read next: How much caffeine is in cola? · Does Pepsi Max have caffeine? · Does Coke Zero have caffeine?

Optimal Native is coming to the UK. One stack for the whole day: Morning Energy, Daily Flow and Evening Relax. Pre-orders ship from 15 December 2026.

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