Regular tea, coffee and cereal users
If you pour soya drink several times a day, compare kcal per 100ml and consider the amount you actually use across those drinks and meals.
Who is this choice for?
How often you use a carton, and whether it replaces dairy regularly, changes which label details matter most.
People replacing dairy regularly
Check the individual carton for protein and declared calcium, iodine and vitamins rather than assuming every soya drink has the same nutrient profile.
Organic and short-ingredient-list shoppers
If organic status or a short ingredient list matters to you, weigh that preference against fortification. UK government guidance says plant-based drinks labelled organic cannot be fortified with nutrients.
What should you compare?
Start with energy for your usual pour, then check the exact carton for nutrients, allergens and instructions after opening.
Lower-energy unsweetened carton
Consider it when: Reducing the energy contributed by frequent pours is your main priority. ASDA Groceries lists JUST ESSENTIALS by ASDA Unsweetened Soya Drink at 19 kcal per 100ml.
Trade-off: Its listed protein is 2.0g per 100ml; check the pack for any nutrients you expect from a regular dairy replacement.
Unsweetened and fortified carton
Consider it when: You want a regular soya drink with declared protein and added nutrients. Waitrose & Partners lists calcium, iodine and vitamins in essential Unsweetened Soya Drink.
Trade-off: Waitrose lists that drink at 35 kcal per 100ml, compared with ASDA Groceries’ 19 kcal per 100ml for its JUST ESSENTIALS carton; account for the amount you pour.
Organic, short-ingredient-list carton
Consider it when: Organic status and a short ingredient list take priority. Waitrose & Partners lists water and organic soya beans for Plenish Organic No Added Sugar Soya.
Trade-off: UK government guidance says organic plant-based drinks cannot be fortified, so check how that fits a regular dairy-replacement routine.
| Priority | What to check | Your needs |
|---|---|---|
| Energy | Compare kcal per 100ml on the exact carton. For your pour, multiply that figure by the volume in ml divided by 100; the NHS explains that labels may also show values per portion. | Several pours in tea, coffee or cereal can add up, so I want to calculate what I actually use rather than rely on a suggested serving. |
| Sugars | Read the “of which sugars” value and its measurement basis. Check the exact variant: “unsweetened” and “no sugar” do not mean zero calories. | I want to compare declared sugars without mistaking the wording on the front of the carton for its energy value. |
| Protein and fortification | Compare protein on the same per-100ml basis where available, and check for declared calcium, iodine and vitamins. UK government guidance says nutrient content varies among plant-based drinks and organic versions cannot be fortified. | If soya drink regularly replaces dairy for me, I need to know what this particular carton declares, not just that it contains soya. |
| Allergens | Read the current allergen statement for soya and any other stated warnings. The Food Standards Agency identifies soya as an allergen. | I need to rule out soya drink for anyone with a soya allergy and check any other relevant warnings on the carton. |
| Storage | Check whether the unopened carton needs chilling, then follow its refrigeration and use-by instructions after opening. Stated periods differ between products. | A litre needs to fit how quickly my household will use an opened carton; otherwise a smaller format may be more practical. |
What is easy to overlook?
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Reading “no sugar” as “no calories”
A drink can declare 0g sugars and still provide energy. ASDA Groceries and Waitrose & Partners list 19 and 35 kcal per 100ml respectively for two different unsweetened cartons.
Compare kcal per 100ml, then calculate the contribution of your usual pour. The NHS notes that overall energy intake and use matter for weight loss.
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Assuming every soya drink has the same nutrients
Protein and added nutrients differ between the named products. UK government guidance says plant-based drinks vary considerably in nutrient content and that organic versions cannot be fortified.
For a regular dairy replacement, read the exact carton for protein, calcium, iodine and vitamins rather than relying on the word “soya”.
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Buying a litre without checking opened-carton instructions
ASDA Groceries says its JUST ESSENTIALS carton should be used within 4 days of opening, while Waitrose & Partners specifies 3 days for essential Unsweetened Soya Drink.
Check the storage instructions before buying and consider a smaller format if you are unlikely to finish a litre within the stated period.
An unfinished carton may mean discarding unused drink.
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Overlooking allergens because the drink is plant-based
The Food Standards Agency identifies soya as an allergen. Marks & Spencer also says its Unsweetened Soya Drink is not suitable for people with nut or peanut allergies.
Do not choose soya drink for someone with a soya allergy, and check the current pack for any other relevant allergen statements.
Brand and product-line references
These examples show why it matters to compare named cartons and variants rather than make assumptions about a whole brand.
Alpro
The Alpro Soya No Sugar chilled 1L carton listed by ASDA Groceries is one option for comparing declared sugars, energy and fortification.
- ASDA Groceries lists 33 kcal, 3.3g protein and 0g sugars per 100ml, plus calcium and vitamins B2, B12 and D.
- This chilled variant needs refrigeration between +1°C and +7°C and use within 5 days of opening; its instructions should not be assumed to apply to other Alpro variants.
JUST ESSENTIALS by ASDA
Its Unsweetened Soya Drink 1 Litre is a lower-energy example among the named cartons.
- ASDA Groceries lists 19 kcal, less than 0.5g sugars and 2.0g protein per 100ml.
- Check its current label for any fortification you require; do not assume that an unsweetened carton provides the same added nutrients as a fortified one.
essential Waitrose
The Unsweetened Soya Drink is a UHT option with declared protein and added nutrients.
- Waitrose & Partners lists 35 kcal, 3.4g protein and 0g sugars per 100ml, with calcium, iodine and vitamins D, B12 and B2.
- Once opened, Waitrose & Partners says to refrigerate it below 5°C and consume it within 3 days.
M&S Plant Kitchen
M&S Unsweetened Soya Drink is another example with declared fortification.
- Marks & Spencer lists 30 kcal, 2.8g protein and 0.4g sugars per 100g, plus calcium, iodine and vitamins D and B12.
- Marks & Spencer states that this product is not suitable for people with nut or peanut allergies. Its listed nutrition basis is per 100g, not per 100ml.
Plenish
Plenish Organic No Added Sugar Soya is an organic UHT option with water and organic soya beans listed as ingredients by Waitrose & Partners.
- Waitrose & Partners lists 32 kcal, 3.2g protein and 0g sugars per 100ml.
- UK government guidance says organic plant-based drinks cannot be fortified; check whether its declared nutrients meet what you want from a regular dairy replacement.
Joybuy product options
This long-life, multi-carton Alpro option is relevant if you use soya drink regularly and want to assess how much of a 1-litre carton you will use after opening. Check its own label for the nutrition and storage details of this variant.
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Alpro Soya No Sugars Long Life Drink, 8 x 1L
The 8 x 1L format suits a routine that calls for multiple cartons, provided you can use each carton within its stated period after opening. Compare this long-life variant’s own kcal per 100ml, nutrients and storage instructions; do not apply the chilled Alpro carton’s details to it.
Questions about choosing soya drink
Will switching to a no-sugar soya drink cause weight loss?
Not by itself. The NHS explains that weight loss requires using more energy than you take in. Compare kcal per 100ml and the amount you actually drink to see how a switch affects your overall intake.
Should I always choose the carton with the fewest calories?
Choose on energy alone only if that is the relevant difference for your use; a regular dairy replacement calls for a closer look at nutrients too. ASDA Groceries lists 19 kcal and 2.0g protein per 100ml for JUST ESSENTIALS Unsweetened Soya Drink, while Waitrose & Partners lists 35 kcal and 3.4g protein per 100ml, plus declared fortification, for essential Unsweetened Soya Drink.
Will an organic soya drink have added vitamins and minerals?
No added fortification should be assumed. UK government guidance says plant-based drinks labelled organic cannot be fortified with nutrients. Check the exact carton’s nutrition and ingredient information if particular nutrients matter to your choice.
Can someone with a soya allergy drink soya milk?
No. The Food Standards Agency identifies soya as an allergen and warns of a possible health risk for anyone with a soya allergy. Read the current pack for soya and any other relevant allergen warnings.
How long does a 1-litre carton keep after opening?
Follow the instructions on the exact carton, because the stated periods differ. Waitrose & Partners specifies 3 days for essential Unsweetened Soya Drink, ASDA Groceries specifies 4 days for JUST ESSENTIALS Unsweetened Soya Drink, and ASDA Groceries specifies 5 days for the chilled Alpro Soya No Sugar variant; each also needs refrigeration as directed after opening.