For an older adult who regularly uses soya drink instead of dairy milk, an unsweetened, calcium-fortified option is a practical starting point; check the label for vitamin D, vitamin B12 and iodine too, because plant-based drinks vary in their nutrient content, as the NHS and UK government note. Buy a bulk pack only if its actual volume and each carton’s storage instructions suit the household. Poor appetite or unintentional weight loss calls for healthcare or dietetic advice, not just a change of drink.
If soya drink goes into tea, cereal, porridge or cooking most days, compare unsweetened products with added calcium. Check the current carton for vitamin D, vitamin B12 and iodine rather than assuming every soya drink contains them. The NHS includes unsweetened, calcium-fortified plant drinks among dairy alternatives.
Protein and energy per 100ml matter when comparing drinks, but a different carton is not a substitute for assessing reduced food intake. The NHS identifies unintentional weight loss as a sign of possible malnutrition; seek healthcare or dietetic advice if it is a concern.
Check the number and size of cartons, where unopened packs should be kept, and how quickly each carton must be used after opening. Six 1L cartons contain 6 litres, while six imperial pints are about 3.41 litres: the two descriptions are not interchangeable.
Start with the role the drink will play in the person’s diet, then compare the nutrition label and the quantity the household can use.
| Priority | What to check | Your needs |
|---|---|---|
| Fortification | Look for added calcium on the carton, then check whether vitamin D, vitamin B12 and iodine are listed. The UK government’s July 2025 assessment notes that nutrient content varies considerably between plant-based drinks. | I use soya drink in place of dairy milk regularly, so I want to know which nutrients this particular carton provides. |
| Protein and energy | Compare protein in grams and energy in kcal per 100ml for the exact products. Alpro lists 5.0g protein and 57 kcal per 100ml for Soya High Protein Plain; Asda lists 3.3g and 33 kcal per 100ml for Alpro Soya No Sugar Chilled. | If food intake is poor or weight is falling, I need advice about the overall diet rather than relying on a higher-protein drink alone. |
| Sugars | Read the sugars figure per 100ml as well as words such as ‘unsweetened’ or ‘high protein’. Asda lists 0g sugars per 100ml for Alpro Soya No Sugar Chilled; that figure does not describe every Alpro formulation. | For everyday drinks and cooking, I may prefer an unsweetened option, while still considering protein and energy separately. |
| Pack volume | Multiply the carton size by the carton count. A 6 × 1L pack contains 6 litres, not six imperial pints; six 250ml cartons contain 1.5 litres. | How many cartons will we use before buying another pack, and do we have room to store them as instructed? |
| Allergens and opened-carton storage | Check the soya allergen declaration and follow the exact carton’s refrigeration and use-within instructions. Tesco lists five days after opening for its Soya Drink Unsweetened; M&S lists three days for its Unsweetened Soya Drink. | Everyone drinking it must be able to have soya, and we need to finish each opened carton within its stated period. |
Six 1L cartons contain 6 litres; six imperial pints are about 3.41 litres. Confusing the two can leave more drink to store and use than expected.
Check both carton count and net volume before choosing a multipack.
The UK government’s July 2025 assessment says the nutrient content of plant-based drinks varies considerably. A familiar brand name or an organic label does not tell you how much calcium, vitamin D, vitamin B12 or iodine a particular drink provides.
Compare the ingredients and nutrition information on the exact carton, especially when switching formulations.
‘No sugar’ describes one aspect of a drink; it does not establish that the drink meets the needs of someone eating less. The NHS identifies unintentional weight loss as a possible sign of malnutrition.
Seek healthcare or dietetic advice about poor intake or weight loss. If comparing drinks as part of a suitable plan, read both protein and kcal per 100ml.
Soya is an allergen, and opened-carton instructions differ by product. Tesco’s Soya Drink Unsweetened specifies five days after opening, while M&S Unsweetened Soya Drink specifies three.
Check allergen suitability before purchase, then refrigerate opened cartons and follow their own use-within instructions.
These examples show why the exact formulation matters more than the name on the front of the carton.
Alpro has distinct no-sugar and higher-protein soya drinks; compare their labels rather than treating them as nutritionally identical.
Tesco lists unsweetened 1L soya drinks for shoppers comparing routine dairy alternatives.
The Essential Unsweetened Soya Drink is a Waitrose own-label option to compare when added nutrients matter.
M&S lists both an unsweetened soya drink and a sweetened Plant Kitchen formulation, so check which one is being purchased.
Sainsbury's lists an Alpro No Sugar Long Life 1L soya drink; this is an Alpro product, not a Sainsbury's own-label formulation.
These options cover long-life soya drink, a plant-protein formulation and smaller ready-to-drink cartons. Check each pack’s stated quantity against the household’s intended use; a six-carton pack need not contain six pints.
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An option to consider for routine soya-drink use if eight 1L cartons suit the household. Check the current carton’s added nutrients and storage instructions; the stated pack volume is 8 litres, not six pints.
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For someone comparing plant-protein formulations, check the current nutrition label alongside the rest of the diet. The title includes ‘6’ and ‘1L’, but confirm the carton count and total pack volume before treating it as a 6 × 1L purchase. Seek healthcare or dietetic advice for poor appetite or unintentional weight loss.
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A 300ml black soybean drink for someone considering a single serving rather than a cupboard-stock multipack. Compare its current nutrition and allergen label with the nutrients needed from a routine dairy replacement.
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Six smaller cartons may suit individual servings. At 250ml each, they total 1.5 litres rather than six pints. Check the current label for added nutrients, sugars, allergens and instructions after opening.
No. Nutrient content varies between plant-based drinks, according to the UK government’s July 2025 assessment. If soya drink regularly replaces dairy milk, check the particular carton for added calcium, vitamin D, vitamin B12 and iodine rather than deciding from ‘organic’ on the front.
Do not assume that it can. Check how much vitamin D the exact drink provides per 100ml and consider it alongside other dietary sources. The NHS states that adults need 10 micrograms of vitamin D a day; ask a healthcare professional about individual concerns.
Seek healthcare or dietetic advice rather than relying on a different soya drink to address it. The NHS identifies unintentional weight loss as a possible sign of malnutrition; a drink’s protein figure alone cannot establish an appropriate overall plan.
Follow the instructions on that carton. Tesco says to refrigerate its Soya Drink Unsweetened and use it within five days of opening; M&S gives three days for its Unsweetened Soya Drink. Do not carry one product’s period over to another.
No. Soya drinks contain the allergen in their name and ingredients; check the current product label and choose a suitable alternative for anyone with a soya allergy.