Who is each format for?

Hosts pouring individual drinks

If you want 12 separate tonic serves rather than an opened large bottle, the Schweppes regular and Slimline 12 × 150ml packs each provide 1.8 litres in total, according to their Amazon.co.uk listings. Check whether 150ml is enough mixer for each planned drink.

Groups with different sugar and sweetener preferences

Regular and no-sugar tonic are not interchangeable for every guest. The Schweppes Slimline listing gives 0g sugars per 100ml and names aspartame; Britvic Mixers also lists aspartame and saccharin in its low-calorie Indian tonic. Check the current pack ingredients before serving.

Hosts planning several flavour pairings

A mixed tonic case allows guests to try different styles, while Fentimans describes botanical ingredients in its Premium Indian tonic. Check the case size as well as the flavours: DrinkSupermarket lists a Fentimans tonic case of 24 × 200ml, rather than 12 individual units.

What should you check before buying?

Settle the number and size of serves first, then choose a recipe and flavour selection that work for the drinks you intend to make.

Priority What to check Your needs
Serve size Check both the unit size and total volume. Amazon.co.uk lists the Schweppes cases at 12 × 150ml, or 1.8 litres, and a Fever-Tree mixed case at 12 × 200ml, or 2.4 litres. I want individual portions, but I need enough mixer for the pours I have planned.
Ingredients Compare the current nutrition and ingredient labels. The Schweppes Slimline listing states 0g sugars per 100ml and lists aspartame; the regular Indian tonic contains sugar and sodium saccharin. Check the regular pack for its current sugar figure. Some guests prefer no-sugar tonic; others may want to check which sweeteners a drink contains.
Flavour selection Decide whether a regular tonic or several styles suit your planned drinks. The Amazon.co.uk Fever-Tree mixed-case listing permits substitutions when a flavour is unavailable. I would like different tonic styles for different drinks, but I cannot plan an exact pairing around a flavour that might be substituted.
Case quantity Confirm that the pack contains exactly 12 units if that matters. DrinkSupermarket lists a Fentimans case of 24 × 200ml; Britsuperstore lists Britvic regular and low-calorie tonic in 24-packs. A larger case could work if I am serving more drinks or can use the remaining mixers later; otherwise, I want to keep to 12 units.

Common buying mistakes

  • Counting units without checking volume

    Twelve 150ml serves total 1.8 litres, while twelve 200ml serves total 2.4 litres. The same unit count can therefore mean a different amount of mixer for your planned drinks.

    Check the total volume and individual container size before choosing between cases.

  • Assuming a light tonic has no sweeteners

    Schweppes Slimline lists aspartame. Britvic Mixers lists aspartame and saccharin in its low-calorie Indian tonic and includes a phenylalanine declaration.

    Read the current pack label if a guest needs to avoid a particular ingredient; choose another drink when the listed ingredients do not suit them.

  • Planning around every pictured mixed-pack flavour

    The Amazon.co.uk listing for the Fever-Tree mixed case says unavailable tonics may be replaced. That matters if a brunch drink depends on one specific flavour.

    Confirm the current assortment with the seller, or choose known flavours separately when the pairing must be exact.

Relevant tonic brands

These brand ranges offer different recipes and formats; check the particular product and pack rather than assuming a feature applies across a whole range.

Schweppes

Regular Indian Tonic Water and Slimline Tonic Water are both listed in 12 × 150ml formats by Amazon.co.uk.

  • The two packs offer the same number and size of individual serves.
  • Slimline lists 0g sugars per 100ml but contains aspartame; the regular tonic contains sugar and sodium saccharin. Check the current labels when ingredients matter to guests.

Fever-Tree

Fever-Tree describes its Premium Indian Tonic Water as intended for gin, vodka and fortified wines. An Amazon.co.uk listing also offers a mixed selection of 12 × 200ml bottles.

  • The listed mixed case provides 2.4 litres across several tonic styles.
  • The mixed-case seller says unavailable flavours may be substituted, so confirm the assortment if particular pairings matter.

Fentimans

Fentimans describes juniper berries, kaffir lime leaves and lemongrass in its Premium Indian Tonic Water; its Connoisseurs Tonic Water is presented as a more delicate style.

  • The two described tonic styles give hosts different flavour directions to consider.
  • The DrinkSupermarket case listing is for 24 × 200ml, so check the quantity if you need exactly 12 units.

Britvic

Britvic offers regular and low-calorie Indian tonic options. Britsuperstore lists both types in 24-packs.

  • The regular and low-calorie options let you choose between different recipes.
  • Britvic Mixers lists aspartame and saccharin in its low-calorie tonic and declares a source of phenylalanine. Check the ingredients and case count before buying.

Joybuy cases of 12

These Schweppes cases cover two fixed 12 × 150ml tonic choices for individual brunch drinks: Slimline and regular Indian tonic.

Schweppes Slimline Tonic Water, 12 × 150ml

Schweppes Slimline Tonic Water, 12 × 150ml

For individual drinks when guests prefer no-sugar tonic, this case provides twelve 150ml serves. The product information states 0g sugars per 100ml and lists aspartame; check the current label if a guest needs to avoid a listed ingredient.

View on Joybuy
Schweppes Indian Tonic Water, 12 × 150ml

Schweppes Indian Tonic Water, 12 × 150ml

For regular tonic in individual gin or vodka drinks, this case provides twelve 150ml serves. Its ingredient information lists sugar and sodium saccharin; check the current pack label if the precise sugar amount matters to your group.

View on Joybuy

Questions about brunch mixers

How much tonic is in a case of 12?

A case of 12 × 150ml contains 1.8 litres; a case of 12 × 200ml contains 2.4 litres. The Amazon.co.uk listings for the Schweppes cases and Fever-Tree mixed case illustrate those two formats. Choose the unit size according to the amount you plan to pour in each drink.

Does no-sugar tonic contain sweeteners?

It can. The Schweppes Slimline listing states 0g sugars per 100ml and lists aspartame, while Britvic Mixers lists aspartame and saccharin in its low-calorie Indian tonic. Read the current label when choosing for guests with ingredient restrictions.

What if a guest has previously reacted to quinine?

Check with the guest before serving tonic water, which contains quinine, and let them seek advice from their clinician or pharmacist if needed. The UK Medicines and Healthcare products Regulatory Agency’s prescribing guidance specifically mentions previous adverse reactions to quinine, including quinine in tonic water and other drinks; it is not a general ban on tonic water.

Can I rely on the exact flavours shown in a mixed case?

Not for the listed Fever-Tree mixed case without checking: its Amazon.co.uk seller says unavailable flavours may be substituted. Confirm the current assortment if one of your planned drinks needs a particular tonic.

Which pack details should I check when it arrives?

Check the unit count, container size and current ingredients against what you intended to serve. GOV.UK guidance says prepacked food requires mandatory label information and that labelling provided must be accurate and not misleading; use the actual pack to confirm details that matter to your guests.