Choose a 150ml multipack if you want individual mixer portions ready for several drinks across the week; compare the number of cans with how many serves you expect to make. For tonic, check the sugars and ingredients as well as the flavour: Schweppes Slimline lists 0g sugars per 150ml and uses aspartame, while Fever-Tree Refreshingly Light contains fructose and sugars. A 200ml Fentimans mixer suits a larger serve rather than a strict 150ml portion.
Individual 150ml cans let you open a mixer for one serve while leaving the rest of the weekly-shop pack unopened. Tesco Groceries lists Fever-Tree and Schweppes tonic in 150ml multipacks with different can counts.
A portioned tonic can still have very different ingredients. Tesco Groceries lists 0g sugars per 150ml for Schweppes Slimline, which uses aspartame; the Fever-Tree Refreshingly Light listing contains fructose and sugars.
If a 200ml serve fits your usual drink, Fentimans offers an alternative to the 150ml tonic packs. Its Premium Indian Tonic description names lemon oil, lemongrass and herbal infusions.
Start with the number and size of serves you will use during the week, then compare ingredients and the type of drink you plan to make.
| Priority | What to check | Your needs |
|---|---|---|
| Portions | Check both can count and serve size. The listed tonic formats include 8, 12 and 15 cans of 150ml; Fentimans describes a 200ml mixer format. | I want enough unopened portions for the drinks I expect to make, without choosing a larger serve than I normally use. |
| Sugars and sweeteners | Read the sugars figure with its per-serving or per-100ml basis, then check the ingredients. Tesco Groceries lists 0g sugars per 150ml and aspartame for Schweppes Slimline; Fever-Tree Refreshingly Light lists fructose and 3.8g sugars per 100ml. | If avoiding sugar matters to me, the word ‘light’ alone will not settle the choice. I also want to know which sweetener the tonic uses. |
| Flavour | Check whether the product is a classic, Mediterranean or botanical-style tonic, and read its stated ingredients. Treat manufacturer pairing suggestions as suggestions, not taste-test results. | I’m choosing a mixer for a particular gin, vodka or alcohol-free drink, so its flavour description matters as much as the pack format. |
| Serving volume | Compare the total volume as well as the number of containers: 12 × 150ml is 1,800ml, while an individual Fentimans mixer is 200ml. | For drinks across the week, I need a pack that matches both how often I will open a mixer and how much I pour each time. |
Fever-Tree Refreshingly Light lists fructose and 3.8g sugars per 100ml. Tesco Groceries lists 0g sugars per 150ml for Schweppes Slimline, which uses aspartame.
Compare the sugars line and ingredients list, keeping the different nutrition reporting bases in mind.
Fentimans describes a 200ml mixer format; the Schweppes and Fever-Tree multipacks discussed here contain 150ml portions. One container will therefore give you a different amount of mixer.
Check the container size against the drink you usually make before deciding how many to stock.
Quinine appears in the cited tonic product information. UK Medicines and Healthcare products Regulatory Agency guidance specifically notes previous adverse reactions to quinine, including quinine in tonic water, when discussing quinine prescribing.
If you have previously reacted to quinine or have a medicine-related concern, check the current label and seek individual advice from a pharmacist or clinician before choosing a quinine-containing tonic.
Tesco Groceries lists classic and Slimline tonic in 12 × 150ml packs.
Its 150ml tonic formats include Premium Indian and Refreshingly Light variants in different multipack sizes.
Fentimans describes a 200ml mixer range that includes Premium Indian Tonic.
Britvic announced a six-can, 150ml Crafted Lemonade multipack in May 2025.
Tesco Groceries lists 150ml Fever-Tree and Schweppes tonic multipacks alongside other mixer sizes.
These 150ml tonic multipacks are options for stocking individual mixers during a weekly shop. Compare pack count and variant before choosing.
No image available
Twelve individual cans suit a weekly shop where you want to open one 150ml mixer at a time. Tesco Groceries lists 0g sugars per 150ml for this tonic and identifies aspartame in its ingredients; check the current label if that ingredient matters to you.
No image available
The 15-can format provides individual 150ml portions for a larger number of drinks. The Joybuy product description identifies fructose and lists 3.8g sugars per 100ml, so this variant is not sugar-free.
No image available
Eight 150ml cans offer a smaller multipack of individual serves. Choose this Mediterranean variant if that flavour style fits the drinks you plan to make; check its label for sugars and ingredients rather than treating ‘light’ as a sugar-free claim.
No image available
This eight-can pack gives you 150ml portions when you want fewer mixers than a 12- or 15-can pack. Fever-Tree describes its Premium Indian tonic as a mixer for gin, vodka and vermouth; check the product label if sugar content affects your choice.
No image available
Twelve individual 150ml cans are an option for stocking tonic for several gin or vodka serves. If you are choosing between this Indian tonic and Schweppes Slimline, compare the current ingredients and sugars information on each label.
Choose 150ml cans if you expect to make drinks on separate occasions and want to leave unused mixer portions unopened. A larger bottle may fit better when several drinks will be made from it soon after opening; compare that plan with how many individual cans you would use.
No. Tesco Groceries lists 0g sugars per 150ml for Schweppes Slimline and identifies aspartame, while the Fever-Tree Refreshingly Light product information lists fructose and 3.8g sugars per 100ml. Compare both the ingredients and the stated measurement basis when choosing.
Check whether the tonic contains quinine and seek individual advice from a pharmacist or clinician before choosing it. UK Medicines and Healthcare products Regulatory Agency guidance notes previous adverse reactions to quinine, including reactions to quinine in tonic water, in its advice on quinine prescribing.