Who is a large carton for?

A 1-litre carton suits planned servings at home; a smaller bottle is easier to take away from home.

Runners planning food after a long run at home

If you expect to pour several servings from one carton, compare carbohydrate and protein per serving and plan the rest of your food and fluids. A whole carton is not automatically one serving.

Runners choosing a protein-containing drink

A higher-protein milkshake may have less carbohydrate than conventional flavoured milk. Check both figures against the food you plan to have after training.

Runners who need a bottle away from home

For an occasional drink after a session, a single bottle may be more practical than an opened carton. Check its portion size, nutrition table and allergen declaration.

What should you check?

Decide whether the drink is mainly for planned servings at home or one portable serving, then compare nutrition per 100 ml and the amount you would actually drink.

PriorityWhat to checkYour needs
Carbohydrate and protein Compare both amounts per 100 ml and per planned serving. Tesco Groceries lists 5.7 g protein per 100 ml for Arla Protein and 8.8 g carbohydrate and 3.2 g protein per 100 ml for Yazoo. After a long or intense run, I want to know what the drink contributes alongside my other food and fluids. UK Sports Institute guidance calls for a carbohydrate- and protein-rich snack with fluids, followed by a meal shortly afterwards.
Pack and portion size Check the total volume, serving information and storage instructions after opening. Tesco Groceries lists both Arla Protein and Yazoo in 1-litre formats; the Yazoo carton states five servings. Will I use several servings from a carton, or would one bottle be easier to take with me?
Sugars and sweeteners Read the carbohydrate and sugars lines as well as any no-added-sugar wording. ASDA Groceries lists 7.1 g carbohydrate per 100 ml for the no-added-sugar-labelled Mars drink, which contains sweeteners. If I am comparing label claims, I want to know what the nutrition table says rather than assuming no added sugar means no carbohydrate.
Allergens Check the current ingredient and allergen declaration for the exact product. Arla Protein is described as lactose free but contains milk; ASDA Groceries also identifies barley in the Mars drink. Where I need to avoid an ingredient, I cannot use lactose-free or no-added-sugar wording as a substitute for the allergen label.

Buying pitfalls

  • Choosing by protein wording alone

    Tesco Groceries lists more protein per 100 ml for Arla Protein than for Yazoo, while Yazoo lists more carbohydrate per 100 ml. The relevant difference depends on what else you plan to eat after your run.

    Compare both nutrients on the same per-100-ml basis, then consider your intended serving and the rest of your food and fluids.

  • Treating a 1-litre carton as one serving

    A large pack is designed to be portioned: the Tesco Groceries Yazoo listing states five servings per litre. An opened carton also needs to be handled according to its storage instructions.

    Check how many servings you will use and whether you can refrigerate the carton after opening. Choose a single bottle if that better matches your plans.

    Buying more than you can use within the stated storage period can leave part of the carton unused.

  • Confusing lactose free with milk-allergy suitability

    Arla Protein is labelled lactose free but is not suitable for someone with a milk allergy. The compared dairy drinks contain milk, and the Mars drink also declares barley.

    Check the current allergen declaration for the exact pack. If you have an allergy, do not rely on a lactose-free claim to establish suitability.

Brand and product-line references

These examples illustrate differences in pack format and labels; they do not imply that every product from a brand has the same formulation.

Arla Protein

The chocolate milk shake listed by Tesco Groceries is a 1-litre, protein-focused option for planned servings at home.

  • Tesco Groceries lists 57 g protein per litre, or 19 g per stated 330 ml serving.
  • It contains milk despite being labelled lactose free; check its carbohydrate content alongside the rest of your planned food.

Yazoo

Tesco Groceries lists a 1-litre chocolate milkshake with five stated servings.

  • Its listed nutrition includes 8.8 g carbohydrate and 3.2 g protein per 100 ml.
  • It contains milk; follow the pack instructions for storage after opening.

Frijj

The chocolate milkshake listed by ASDA Groceries comes in a 330 ml bottle rather than a large carton.

  • ASDA Groceries lists 11.9 g carbohydrate and 3.7 g protein per 100 ml for this bottle.
  • It contains milk and does not meet a preference for a 1-litre pack.

Mars

ASDA Groceries lists a 400 ml milkshake labelled no added sugar, intended as a single-bottle option rather than a large carton.

  • Its listed nutrition includes 7.1 g carbohydrate per 100 ml; the product contains sweeteners.
  • It contains milk and barley. No added sugar does not mean carbohydrate free.

Joybuy milkshake options

These Applied Nutrition options are multipacks of individual protein-shake bottles for planned servings, not the 1-litre Arla Protein or Yazoo cartons discussed above. Check the bottle’s nutrition and allergen label against the role you want it to play after training.

Applied Nutrition Strawberries & Cream Protein Nutrition Shake, eight 330 ml bottles

Applied Nutrition Protein Nutrition Shake, Strawberries & Cream, 8 × 330 ml

The eight individual bottles suit planned servings when you do not want to open a large carton. It contains milk; check the bottle’s carbohydrate and protein values against your planned food after a run. Refrigerate after opening and consume within 12 hours, according to the supplied product information.

View on Joybuy
Applied Nutrition Double Chocolate Protein Nutrition Shake, eight 500 ml bottles

Applied Nutrition Protein Nutrition Shake, Double Chocolate, 8 × 500 ml

This multipack provides eight larger individual bottles for planned servings. It contains milk; compare the bottle’s carbohydrate and protein values with your intended serving and other post-run food. Refrigerate after opening and consume within 24 hours, according to the supplied product information.

View on Joybuy

Frequently asked questions

Can a milkshake replace my meal after a long run?

A milkshake can be part of your post-run food and fluid intake, but it should not stand in for the subsequent meal. UK Sports Institute guidance advises a carbohydrate- and protein-rich snack with fluids after intense or prolonged exercise, followed by a full meal shortly afterwards.

Should I choose Arla Protein or Yazoo in a 1-litre pack?

Compare them according to the nutrient you want the drink to contribute. Tesco Groceries lists 5.7 g protein per 100 ml for Arla Protein, while its Yazoo listing gives 8.8 g carbohydrate and 3.2 g protein per 100 ml. Consider the serving you will pour and the rest of your food, rather than treating either carton as a complete post-run plan.

How should I store a large milkshake after opening?

Refrigerate the Arla Protein or Yazoo 1-litre carton after opening and consume it within three days, according to the supplied retailer product information. Check the instructions on the pack you buy before planning several servings.

Is a lactose-free milkshake suitable for a milk allergy?

No: the lactose-free Arla Protein drink still contains milk and is identified as unsuitable for people with a milk allergy. Check the current allergen declaration on each product; the compared Mars drink also declares barley.

Does no added sugar mean no carbohydrate?

No. The Mars milkshake listed by ASDA Groceries is labelled no added sugar but lists 7.1 g carbohydrate per 100 ml and contains sweeteners. Read the nutrition table when comparing it with another drink.