If you want a measured protein contribution from one drink, choose a ready-to-drink shake with a stated amount per bottle and compare that amount alongside the bottle size. The cited regular Yazoo, FRijj and Mars milk drinks contain protein, but their listed amounts per 100ml are lower than those of the dedicated shakes examined. Check total sugars and milk allergens too; if you have kidney disease or a prescribed protein target, ask your renal team or dietitian before regularly adding protein drinks.
Who is this choice for?
People seeking a measured protein top-up
A ready-to-drink shake with protein stated per bottle makes it easier to compare servings. Tesco listings for specific UFIT and Optimum Nutrition shakes state 25g in a 330ml bottle or 50g in a 500ml bottle; those figures do not apply to every flavour or product in either range.
Shoppers comparing familiar milkshakes with protein shakes
If you usually buy a flavoured milk drink, compare its protein per 100ml and per bottle with a dedicated shake before treating them as interchangeable. The cited Yazoo, FRijj and Mars drinks list 3.3g, 3.7g and 3.5g protein per 100ml respectively.
Shoppers checking dairy or lactose requirements
Check the ingredients and allergen declaration on the exact drink. A lactose-free statement addresses lactose content; it does not establish that a milk-based shake is suitable for someone with a milk allergy.
What should you check?
Start with the amount in the bottle you would drink, then compare nutrition information and ingredients for that exact product. If “sparkling” matters to you, check whether the drink is described as carbonated rather than assuming the term applies to milkshakes.
| Priority | What to check | Your needs |
| Protein per drink |
Read grams of protein per bottle and its volume. For different bottle sizes, compare grams per 100ml as well. |
I want to know what one complete drink contributes, rather than rely on a front-of-pack protein description. |
| Total sugars |
Read total sugars per 100ml and for the amount you will drink. Do not treat “no added sugar” as “sugar-free”: Tesco lists 6.5g sugars per 100ml for its no-added-sugar Mars milk drink. |
The drink needs to fit alongside the rest of what I eat and drink, so the full-bottle figure matters to me. |
| Milk and other ingredients |
Check the exact bottle’s ingredient and allergen declaration. If you need a lactose-free drink, confirm that claim separately; it does not mean milk-allergen-free. |
I need to distinguish a lactose requirement from a milk allergy before choosing a dairy-based shake. |
| Prescribed protein intake |
Check any individual protein target with your renal team or dietitian before making a high-protein drink a regular addition. Royal Devon University Healthcare NHS Foundation Trust cautions that protein supplements may be unnecessary or harmful for people with kidney disease. |
If my protein intake has been individually prescribed, I need advice that accounts for my kidney condition and treatment. |
Common buying mistakes
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Choosing by a protein claim without reading the amount
A regular dairy milkshake can contain protein without contributing the same amount as a dedicated shake. The cited FRijj chocolate drink lists 3.7g per 100ml; Tesco’s stated protein and bottle volumes for selected UFIT and Optimum Nutrition shakes work out at approximately 7.6g to 10g per 100ml.
Compare protein for the complete bottle first. If serving sizes differ, compare the per-100ml figures too.
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Taking “no added sugar” to mean no sugar
A drink can have that label and still list sugars in its nutrition table. Tesco’s no-added-sugar Mars milk drink lists 6.5g sugars per 100ml.
Check total sugars and the bottle size when comparing drinks.
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Treating lactose-free as suitable for a milk allergy
A lactose-free milk-based shake may still contain milk, which the Food Standards Agency identifies as an allergen.
For a milk allergy, use the exact product’s ingredient and allergen declaration, not its lactose statement, to assess it.
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Adding a protein shake despite an individual protein target
Royal Devon University Healthcare NHS Foundation Trust cautions that protein supplements may be unnecessary or harmful for people with kidney disease.
If you have kidney disease or a prescribed protein intake, speak to your renal team or dietitian before regularly adding these drinks.
Brand and product-line references
These examples describe specific drinks and labels, not every product made by each brand or what Joybuy stocks.
UFIT
Tesco lists a 330ml UFIT strawberry shake stating 25g protein and a 500ml Pro50 strawberry drink stating 50g protein.
- Both cited listings state “no added sugar”.
- Check the nutrition and ingredient label for the particular bottle and flavour you choose.
Optimum Nutrition
Tesco lists a 330ml chocolate ready-to-drink shake stating 25g protein and a 500ml strawberry shake stating 50g protein.
- The protein amount and bottle volume are stated for both cited products.
- Those figures should not be assumed for other Optimum Nutrition drinks.
Arla Protein
Tesco’s listing for the 482ml chocolate milk shake states 26g protein per bottle.
- A stated whole-bottle amount helps when comparing it with other serving sizes.
- Compare the bottle volume as well as the protein amount; these are distinct measures.
Yazoo
Yazoo’s chocolate drink nutrition information lists 3.3g protein and 8.6g sugars per 100ml.
- Its per-100ml figures give a basis for comparison with other drinks.
- Calculate the amount for the bottle you choose before using it as a planned protein contribution.
Müller FRijj
Tesco lists 3.7g protein and 11.4g sugars per 100ml for the 330ml chocolate milkshake.
- The stated bottle size and per-100ml values allow a whole-bottle comparison.
- The cited chocolate drink is a regular flavoured milkshake, not a basis for judging every FRijj variant.
Mars
Tesco’s listing for the 400ml no-added-sugar chocolate milk drink states 3.5g protein and 6.5g sugars per 100ml.
- The nutrition figures let you assess more than the “no added sugar” wording.
- Check total sugars and the allergen declaration; the cited drink contains milk and barley.
Ready-to-drink shakes on Joybuy
These Joybuy options are ready-to-drink protein shakes for shoppers comparing a stated protein contribution with bottle size, sugars and milk ingredients. They are not a comparison of sparkling drinks or regular flavoured milkshakes.
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Applied Nutrition Vanilla Ice Cream Protein Shake, 8 × 500ml
A ready-to-drink multipack for comparing a measured contribution per bottle. The product information states 42g protein and 17g sugars per 500ml bottle; it identifies milk as an allergen. Check the exact label if milk ingredients affect your choice.
View on Joybuy
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Grenade Strawberries & Cream Protein Shake, 8 × 330ml
A ready-to-drink bottle for a measured protein contribution without mixing. The product information states 26g protein per 330ml bottle and identifies milk as an allergen. Check the nutrition panel for total sugars when comparing it with other drinks.
View on Joybuy
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Grenade Salted Caramel Protein Shake, 12 × 330ml
A 12-bottle ready-to-drink pack for someone who wants the same stated serving size across several drinks. The product information states 26g protein per 330ml bottle and identifies milk as an allergen. Check total sugars on the nutrition panel if that figure matters to your comparison.
View on Joybuy
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REP Vanilla Protein Shake, 8 × 250ml
A smaller ready-to-drink serving if bottle size is part of your choice. The product information states 20.3g protein and 10.8g sugars per 250ml can and identifies milk as an allergen. Compare the per-can figures rather than treating it as the same serving as a 330ml or 500ml bottle.
View on Joybuy
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Applied Nutrition Strawberries & Cream Protein Shake, 8 × 330ml
A ready-to-drink multipack with a stated amount for each bottle. The product information lists 20g protein and 11.6g sugars per 330ml bottle and identifies milk as an allergen; its “no added sugar” wording does not mean sugar-free. The product directions say not to exceed two bottles daily unless advised by a healthcare professional.
View on Joybuy
Frequently asked questions
Can a regular milkshake serve the same purpose as a protein shake?
Compare the amount you would actually drink rather than assuming they are equivalent. The cited Yazoo, FRijj and Mars drinks list 3.3g, 3.7g and 3.5g protein per 100ml respectively; protein amounts and bottle volumes stated in Tesco listings for selected dedicated shakes work out at approximately 7.6g to 10g per 100ml. A regular milkshake may still be your choice when a flavoured dairy drink, rather than a larger measured protein contribution, is the priority.
Does “no added sugar” mean a milkshake has no sugar?
No. Read the total sugars figure on the nutrition table: Tesco’s listing for the no-added-sugar Mars milk drink states 6.5g sugars per 100ml. Check the amount in the bottle as well as the per-100ml figure.
Is a lactose-free protein shake suitable for a milk allergy?
A lactose-free statement does not establish that a shake is free from milk allergens. Check the ingredients and allergen declaration for the exact product if you need to avoid milk.
Should someone with kidney disease add a high-protein shake?
Ask your renal team or dietitian before making one a regular addition. Royal Devon University Healthcare NHS Foundation Trust cautions that protein supplements may be unnecessary or harmful for people with kidney disease, so an individual protein target and treatment need to guide the decision.