People wanting a small flavoured drink
An individual can may be convenient before training if you want a mixer as a drink and plan any food separately. For replacing fluid lost through physical activity, the NHS recommends water.
Who might want a mixer multipack?
Shoppers comparing tonic-water labels
Standard, light and slimline names do not tell you the sugars or ingredients in every recipe. Compare the nutrition declaration per 100ml, then consider the amount in the can you would drink.
People who need to check tonic ingredients
Tonic-water recipes can contain quinine, and ingredients differ between products. If you take quinine or have previously reacted to it, check the pack and ask a pharmacist or clinician before choosing tonic water routinely. The Medicines and Healthcare products Regulatory Agency specifically notes that previous reactions to quinine can include those from tonic water.
What matters when choosing cans?
Decide whether you need a drink or food first. If a mixer is what you want, compare the can size and the exact recipe before choosing a multipack.
| Priority | What to check | Your needs |
|---|---|---|
| Drink or snack | Decide whether you want a flavoured drink, fluid after sweating or food. The NHS recommends water for replacing fluid lost through physical activity. | I want a small drink for its flavour, but I will choose food separately if I need a snack. If replacing lost fluid is the point, I will have water. |
| Nutrition and ingredients | Compare energy and sugars per 100ml, then consider the full can. Check the ingredient list for sweeteners or other ingredients you want to identify; “light” does not establish that a tonic is sugar-free. | If I am comparing standard and light tonics, I want to know what is in the particular can I would drink, not rely on the wording on its front. |
| Can and pack size | Check both the number of cans and the volume of each. Tesco has listed 150ml tonic multipacks, while Britvic described a 330ml six-pack at its 2023 launch, with each can described as two serves. | A small individual can may suit one drink; for a larger can, I would consider whether I want that amount at once or plan to share it. |
| Quinine | Read the tonic’s ingredient list for quinine. If you take quinine or have previously reacted to it, seek advice from a pharmacist or clinician before making tonic water a regular choice. | I need to check the ingredients rather than assume that tonic water and plain sparkling water are interchangeable. |
Common buying mistakes
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Treating a mixer can as the snack
A tonic can is a flavoured drink; choosing one does not settle what food, if any, you want around training. It also does not change the NHS recommendation to use water to replace fluid lost through physical activity.
Buy the mixer for its flavour and convenience, and make separate decisions about water and food.
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Assuming “light” means sugar-free
Fentimans lists 3.4g sugars per 100ml for its Naturally Light Tonic Water. That figure describes this product, not every light tonic.
Compare energy and sugars per 100ml, consider the whole can, and read the exact product’s ingredients.
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Overlooking quinine in tonic water
Quinine appears in the ingredients of tonic waters such as Fentimans Premium Indian Tonic Water. Medicines and Healthcare products Regulatory Agency guidance notes that a previous adverse reaction to quinine can include a reaction to quinine in tonic water.
Check ingredients before buying. If you take quinine or have previously reacted to it, ask a pharmacist or clinician which drinks are suitable.
Brand ranges to compare
These examples show why the can format and exact formulation matter more to this decision than a brand name alone.
Fever-Tree
Fever-Tree offers standard and Refreshingly Light tonic options. Its UK product page positions cans for drinking on the go and bottles for serving or sharing.
- An option to compare small-can formats with bottled mixers.
- Check the ingredients and nutrition of the particular tonic and pack; the range name does not describe every recipe.
Schweppes
Tesco has listed both standard and Slimline Schweppes tonic in 12 × 150ml multipacks.
- The listed packs allow a comparison between two named tonic options in the same can size.
- Check the exact pack for its current nutrition and ingredients rather than treating “Slimline” as a full specification.
Fentimans
Fentimans gives product-specific nutrition information for its Premium Indian and Naturally Light tonic waters, and lists a 4 × 200ml format for Naturally Light.
- Fentimans lists 4.4g sugars per 100ml for Premium Indian Tonic Water and 3.4g per 100ml for Naturally Light. The manufacturer describes Naturally Light as having 30% fewer calories than its Premium Indian product.
- Those figures and the manufacturer’s comparison apply to the specified Fentimans products, not to all light tonics.
Britvic
Britvic announced classic and zero-sugar Indian Tonic Water in 330ml six-packs in 2023.
- Britvic described each 330ml can as two serves, a format to consider if you want to pour or share a larger can.
- Check the particular pack’s ingredients and can size when comparing it with smaller individual serves.
Tesco
Tesco’s own-label listings have included Soda Water and Low Calorie Indian Tonic Water in 6 × 250ml cans.
- The listed formats give a 250ml can-size option to compare with 150ml tonic multipacks.
- Soda water and tonic water are different products; check the exact label and consider how much of a 250ml can you would use.
Joybuy tonic-water multipacks
These tonic-water multipacks offer small individual portions for someone who wants a flavoured drink alongside separately chosen water and food. Compare the pack sizes and check each product’s label for the nutrition and ingredients that matter to you.
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Schweppes Slimline Tonic Water 12 × 150ml
The 150ml size suits someone looking for a small individual mixer rather than food before a workout. This is a 12-pack; check the exact label for ingredients and nutrition when comparing Slimline with other tonics.
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Fever-Tree Refreshingly Light Premium Indian Tonic Water 15 × 150ml
This 15-pack offers 150ml portions if you expect to use several small mixers. “Refreshingly Light” is the product name, not a substitute for checking sugars and other ingredients on the exact pack.
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Fever-Tree Refreshingly Light Mediterranean Tonic Water 8 × 150ml
The 8 × 150ml format is worth considering if you want a smaller multipack than a 15-pack. Compare this Mediterranean variant’s exact ingredients and nutrition with those of the Indian tonic variant rather than assuming the recipes match.
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Fever-Tree Indian Tonic Water 8 × 150ml
This 8 × 150ml standard Indian tonic pack is an option if you prefer that formulation to a light-labelled one. Compare the exact nutrition and ingredients before choosing it; a mixer does not take the place of a snack.
Questions about mixer cans and workouts
Can a tonic can replace water around a workout?
Choose water when replacing fluid lost through physical activity is the main need: that is the NHS recommendation. A tonic can can be an optional flavoured drink, but it does not replace any food you want as a snack.
Does “light” or “slimline” mean sugar-free?
No. Read the exact product’s nutrition panel and ingredients. Fentimans Naturally Light Tonic Water, for example, lists 3.4g sugars per 100ml, so its name should not be read as a sugar-free claim.
How can I compare different can sizes?
Start with energy and sugars per 100ml to compare recipes on the same basis, then consider the volume of the can you would drink. GOV.UK nutrition-labelling guidance specifies declarations per 100g or 100ml; the can size matters when considering the amount in one drink.
Should I check tonic water for quinine?
Yes. Check the ingredients of the particular tonic. If you take quinine or have previously had an adverse reaction to it, including from tonic water, ask a pharmacist or clinician which drinks are suitable; Medicines and Healthcare products Regulatory Agency guidance specifically recognises reactions involving quinine in beverages.
Is a larger multipack the right choice for occasional use?
Choose the number and size of cans you expect to use. Individual cans let you open one portion without opening a larger bottle, while a bigger multipack may leave more cans to store if you only have a mixer occasionally.