Lunch planners watching calories
If a bar is part of your packed lunch, its kcal value for the amount you will eat matters more than a low-sugar description. Check whether the nutrition panel describes a whole bar or a different portion.
Who is this for?
Desk snackers comparing protein
A smaller bar may leave more room in a planned lunch but provide less protein than a larger one. Compare both figures for the same serving before deciding which snack role the bar will fill.
Buyers checking ingredients and polyols
If allergens or sugar alcohols matter to you, inspect the exact flavour’s current ingredients, allergen statements and pack warnings before making it a regular office snack.
What should you compare?
Start with the amount you will actually eat, then compare its protein content and ingredient label. A low-sugar claim cannot stand in for the kcal figure.
| Priority | What to check | Your needs |
|---|---|---|
| Calories per bar | Check kcal for the whole bar and its weight. NHS guidance notes that labels can show kcal per 100g or per portion, and a stated portion may differ from what you eat. | I want the bar to fit alongside the rest of my packed lunch, so the kcal figure for the amount I will eat is the useful comparison. |
| Protein per serving | Compare protein and kcal for the same serving: Myprotein UK lists 15g protein and fewer than 140 kcal for Lean Layered; Tesco lists 21g protein and 212 kcal for its 60g Grenade Cookie Dough bar. | A smaller snack may be enough for me, or I may prefer the additional protein in a larger bar if its calories fit my lunch plan. |
| Ingredients and polyols | Read the exact flavour’s ingredients, highlighted allergens, polyols and any pack warning. Tesco lists 19g polyols per bar for Grenade Cookie Dough. | Before packing a bar regularly, I need to know whether its ingredients or polyol content are relevant to me. |
| Pack and portion | Confirm the bar weight, the number of bars in a multipack and which portion the nutrition figures describe. | If I am packing one bar for each office day, I want to compare one bar with one bar rather than mistake a multipack figure for a serving. |
What is easy to overlook?
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Reading “low sugar” as “low calorie”
PhD lists 238 calories for its Smart Bar despite describing the range as low sugar. Sugar and kcal answer different questions.
Compare kcal for the whole bar before using sugar content to distinguish options.
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Choosing by kcal alone
Myprotein UK lists 15g protein and fewer than 140 kcal for Lean Layered, whereas Tesco lists 21g protein and 212 kcal for Grenade Cookie Dough. The smaller calorie figure comes with a smaller protein serving in these examples.
Decide what role the bar has in your lunch, then compare protein and kcal on the same per-bar basis.
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Overlooking polyols
Tesco lists 19g polyols in a Grenade Cookie Dough bar, and Myprotein’s Lean Layered information carries an excessive-consumption laxative-effect warning.
Read the polyol figure and any warning on the exact pack, particularly if you plan to eat more than one bar or other foods containing polyols.
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Using another market’s label for a UK pack
Nutrition and ingredient details for an overseas version should not be assumed to describe the flavour and pack you are buying in the UK.
Check the current UK pack’s serving size, nutrition table and allergen information before adding it to a routine lunch.
Which brands are relevant?
Myprotein
Its Lean Layered Protein Bar offers a smaller-bar option for comparing kcal and protein in a packed-lunch snack.
- Myprotein UK states that Lean Layered has 15g protein and fewer than 140 kcal per bar.
- Myprotein says this bar is not suitable for vegetarians and carries an excessive-consumption laxative-effect warning.
Grenade
Its bar flavours need comparing individually rather than treating one flavour’s nutrition as a range-wide figure.
- Tesco lists 212 kcal and 21g protein for the 60g Chocolate Chip Cookie Dough bar.
- That Tesco listing also gives 19g polyols per bar and identifies milk and soya; check the full allergen and cross-contact statements.
PhD
The Smart Bar range is another way to compare protein with calories rather than relying on its low-sugar positioning.
- PhD describes its Smart Bar as providing 20g protein per bar.
- PhD lists 238 calories per bar; check the current label for the particular flavour you intend to pack.
Barebells
Tesco lists a 55g Cinnamon Bun Soft Protein Bar, making the exact UK pack the relevant point of comparison.
- The listed bar size gives you a starting point for comparing a whole serving.
- Barebells cautions on its nutrition page that its products are not necessarily low- or reduced-calorie; check the UK pack for the flavour’s figures.
Quest
Quest is a protein-bar range to assess using the exact UK product label if you are considering it for lunch.
- The Quest S'Mores nutrition information considered here describes a US product page, not a confirmed UK pack specification.
Tesco
Tesco is a retailer, not a protein-bar manufacturer; its product pages can help you compare the specific bars and flavours listed there.
- Its Grenade Cookie Dough product information gives per-bar energy, protein and polyol figures.
- A category listing alone does not replace the full nutrition and allergen information for an individual bar.
Joybuy protein bar options
These Grenade multipacks offer individually sized bars to consider for office lunches. Compare the current per-bar nutrition and ingredient label for each flavour before choosing a pack.
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Grenade Soft Core Double Chocolate, 12 × 50g
The 12-pack contains 50g bars for packing one at a time. Check the current per-bar kcal, protein and polyols against your lunch plan; the product information identifies milk and soya allergens.
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Grenade Soft Core Golden Caramel, 12 × 50g
This pack contains twelve 50g bars. Compare the current per-bar kcal and protein figures, and read the polyol warning and allergen label; the product information identifies milk and soya.
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Grenade Soft Core Peanut Butter, 12 × 50g
The 50g bar size allows a one-bar lunch comparison across this range. The product information identifies peanut, milk and soya; check the full current label, including polyols, before packing it.
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Grenade Oreo Flavour, 4 × 60g
This four-pack contains 60g bars, so compare its per-bar kcal and protein with the 50g options rather than comparing pack totals. Check the current polyol figure and full allergen label; the product information identifies milk, gluten and soya.
Common questions
Should I compare protein bars per 100g or per bar?
For a packed lunch, start with the kcal and protein in the amount you will eat—often one whole bar. NHS guidance notes that labels may show kcal per 100g or per portion, so check the stated portion before comparing bars of different sizes.
Does “low sugar” mean a protein bar has fewer calories?
No. PhD describes its Smart Bar as low sugar while listing 238 calories per bar. Read the kcal figure for the exact bar separately from its sugar and protein figures.
What if I want more protein without overlooking calories?
Compare both figures for a whole bar. Myprotein UK lists 15g protein and fewer than 140 kcal for Lean Layered, while Tesco lists 21g protein and 212 kcal for the 60g Grenade Cookie Dough bar; choose according to the snack’s role in your lunch rather than protein alone.
What should I check about polyols before taking a bar to work?
Read the exact bar’s polyol figure and pack warning, especially if you may eat more than one. Tesco lists 19g polyols per bar for Grenade Cookie Dough, and Myprotein’s Lean Layered information warns that excessive consumption may produce laxative effects.
How do I check allergens across different flavours?
Read the current pack’s complete ingredients and precautionary allergen statements for each flavour. The Food Standards Agency says allergens present in prepacked food must be emphasised in its ingredients list; a range name cannot tell you everything in a particular bar.