Who is this for?

People replacing a planned snack

If a bar is taking the place of another snack, compare calories for the complete bar with the amount you planned to eat. Adding it to your usual food is a different choice: the NHS explains that weight loss depends on overall energy intake and use.

Shoppers comparing protein with calories

A protein figure alone does not tell you how much energy a bar contains. The reviewed UK product examples list 190–238 kcal per bar, according to Barebells UK, Myprotein, Tesco Groceries and PhD; check the exact flavour and serving size before comparing them.

Shoppers checking ingredients and allergens

Read the ingredient and allergen information for the precise bar before buying a multipack. The reviewed Barebells and Myprotein labels include warnings about excessive consumption having laxative effects, while their allergen statements differ by product.

What should you check?

Compare the portion you would actually eat first, then use the nutrition and ingredient information for that same flavour to decide whether it fits your plans.

PriorityWhat to checkYour needs
Calories and portion Check kcal per complete bar and the stated serving size. Use kcal per 100g as a second comparison when bar sizes differ. I am replacing a planned snack, so the whole bar needs to fit the amount of food I intend to have.
Protein and fibre Compare protein and, if relevant to your choice, fibre per bar alongside kcal per bar. Check that the figures refer to the exact flavour. Protein matters to me, but I do not want to choose a bar on its protein figure without seeing its calories.
Sugar and sweeteners Read sugars per bar separately from energy. Check the ingredients for polyols and read any warning on the pack. I want to understand what a low-sugar description means for this particular bar before buying several.
Ingredients and allergens Check the exact flavour’s ingredients, declared allergens and precautionary statements. Look for animal-derived ingredients if you avoid them. I need the bar I buy, not just the brand or range, to meet my ingredient and dietary requirements.

What can catch you out?

  • Choosing by a low-sugar description alone

    Low sugar does not tell you the calories in a whole bar. Tesco Groceries lists 1.3g sugars and 222 kcal for the reviewed 60g Grenade Carb Killa Chocolate Chip Salted Caramel bar.

    Check kcal for the complete bar and decide whether it replaces a snack or is additional food.

  • Buying a multipack before reading the sweetener information

    The reviewed Myprotein Layered and Barebells Cookies & Cream labels warn that excessive consumption may have laxative effects. A low-sugar description is not a reason to overlook the pack warning.

    Read the exact bar’s ingredients and warning before committing to a multipack, particularly if you do not know whether that formulation suits you.

  • Assuming every flavour meets the same dietary requirements

    Ingredients and precautionary allergen statements need to be checked for the particular product. For example, Barebells UK states that its reviewed Cookies & Cream bar may contain cereals containing gluten, soy, peanuts and nuts.

    Check the current pack’s full ingredient and allergen statements rather than relying on another flavour or a range-wide description.

Which brands are relevant?

Barebells

Barebells makes original and soft protein-bar formats. Barebells UK lists 190 kcal and 20g protein for its Cookies & Cream 55g bar.

  • The reviewed bar provides a specific per-bar figure for comparing a planned portion.
  • Its label warns about excessive consumption and lists possible contact with gluten-containing cereals, soy, peanuts and nuts; check the flavour you intend to buy.

Myprotein

Myprotein offers Layered Protein Bars. Its product information lists 212 kcal, 20g protein and 6.6g fibre per 60g bar for the reviewed variant.

  • The fibre figure gives shoppers another stated attribute to compare alongside calories and protein.
  • The reviewed product carries a warning about excessive consumption; Tesco Groceries also lists possible contact with peanuts, nuts and gluten for its Triple Chocolate Fudge listing.

Grenade

Grenade makes Carb Killa bars. Tesco Groceries lists 222 kcal, 21g protein, 1.3g sugars and 18g polyols per 60g reviewed Chocolate Chip Salted Caramel bar.

  • The stated sugar and protein figures can be considered alongside the calories in the same bar.
  • The low sugar figure does not make its per-bar energy low; check the exact flavour’s ingredients and allergen statement.

PhD

PhD offers Smart Bars. The reviewed PhD Smart Bar page displays 238 calories, 21g protein and 1g sugar for its displayed bar.

  • The displayed figures allow a per-bar calorie and protein check for that product.
  • Check the nutrition declaration for the exact flavour and pack rather than applying a displayed example across the range.

Quest

Quest makes protein bars. Quest Nutrition lists 190 calories and 20g protein for a Chocolate Peanut Butter 60g bar on its product page.

  • The product page identifies a specific bar size and serving.
  • Check the label and seller for the particular UK product before using those figures for a UK purchase.

Tesco

Tesco is a retailer, not a protein-bar manufacturer. Its grocery listings provide product-specific information for comparing bars from different brands.

  • An individual listing can help identify the flavour, bar size and stated nutrition basis.
  • Use the individual product and its pack label for the final ingredient and nutrition check, rather than treating a category listing as the detail for every bar.

Protein bar options on Joybuy

These Joybuy listings include Grenade Soft Core bars, a Grenade Oreo-flavour multipack and KIND Protein Dark Chocolate Nut Bars. Compare the nutrition and ingredients for each exact bar before deciding which, if any, fits a planned snack.

Grenade Soft Core Double Chocolate protein bars, pack of 12

Grenade Soft Core Double Chocolate, 12 × 50g

For a planned snack, compare the calories and protein per 50g bar, then check the ingredients for this Double Chocolate flavour before buying the 12-pack.

View on Joybuy
Grenade Soft Core Golden Caramel protein bars, pack of 12

Grenade Soft Core Golden Caramel, 12 × 50g

This is a 12-pack of 50g Golden Caramel bars. Check its own per-bar nutrition and ingredients rather than assuming they match the Double Chocolate flavour.

View on Joybuy
Grenade Soft Core Peanut Butter protein bars, pack of 12

Grenade Soft Core Peanut Butter, 12 × 50g

Each bar in this Peanut Butter 12-pack is listed as 50g. Check the exact flavour’s allergen statement as well as its calories per bar before choosing it.

View on Joybuy
Grenade Oreo Flavour protein bars, pack of four

Grenade Oreo Flavour Protein Bar, 4 × 60g

This four-pack contains 60g bars. If comparing it with the 50g Soft Core options, use the nutrition for one complete bar and check the Oreo flavour’s ingredients.

View on Joybuy
KIND Protein Dark Chocolate Nut Bars, pack of three

KIND Protein Dark Chocolate Nut Bars, 3 × 42g

These 42g bars come in a three-pack. Compare protein and calories per bar with the larger Grenade bars, and read the nut ingredient and allergen information before purchase.

View on Joybuy

Questions about choosing a bar

Should I compare calories per bar or per 100g?

Start with kcal per complete bar if you intend to eat the whole bar; use kcal per 100g to compare products of different sizes on a common basis. The NHS advises checking packet calorie information, so also confirm whether the stated serving is a full bar.

Does low sugar mean a protein bar is low in calories?

No: sugar and energy are different figures on the nutrition label. For example, Tesco Groceries lists 1.3g sugars but 222 kcal per 60g bar for the reviewed Grenade Carb Killa Chocolate Chip Salted Caramel variant. Check the calories in the portion you plan to eat.

Why do some bars carry a laxative-effect warning?

The reviewed Myprotein Layered and Barebells Cookies & Cream product information warns that excessive consumption may have laxative effects. Read the ingredients and warning on the exact pack, particularly before buying several bars.

What should I check before buying a protein-bar multipack?

Confirm the number and size of bars, then read the exact flavour’s per-bar nutrition, ingredients and allergen statement. Precautionary warnings can differ: Barebells UK says its reviewed Cookies & Cream bar may contain gluten-containing cereals, soy, peanuts and nuts, while Tesco Groceries lists possible contact with peanuts, nuts and gluten for the reviewed Myprotein Triple Chocolate Fudge bar.