Calorie-conscious evening snackers
If you want a sweet protein bar after dinner, the whole-bar kcal figure is more useful than a low-sugar claim alone when considering the rest of your evening food.
Who is this for?
People looking for a convenient protein snack
Compare protein and kcal for the complete bar, and distinguish a snack from a product intended to replace a meal.
Shoppers checking ingredients carefully
Milk, soy, peanuts, other possible allergens and sweetener warnings differ by product and flavour. Check the exact pack before choosing a bar.
What should you check?
Start with the portion you would actually eat, then compare the nutrition panel and ingredient declaration for that exact flavour.
| Priority | What to check | Your needs |
|---|---|---|
| Whole-bar energy | Find kcal per complete bar and its weight; do not compare a per 100g figure with a whole-bar figure. | I want to know what the bar adds to my evening food, rather than judging it by a low-sugar claim. |
| Protein and product role | Compare grams of protein for the full bar alongside kcal. Check whether the product is described as a snack or a complete meal. | A convenient protein snack might suit me, but I do not want to assume it provides everything a supper would. |
| Sugars and ingredients | Read sugars, carbohydrate and serving size on the same flavour’s panel; check the ingredients as well as front-of-pack wording. | If I prefer a less sugary bar, I still need to see its calorie total and what it contains. |
| Allergens and sweeteners | Read the exact pack’s allergen and possible cross-contact statements. Look for polyols and any excessive-consumption warning. | Ingredients and pack warnings matter to me before I try a flavour or buy several bars. |
Common buying mistakes
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Assuming low sugar means fewer calories
Named bars with low-sugar positioning can have different energy totals. Barebells UK lists 190 kcal for Cookies & Cream, while PhD lists 250 kcal for a Choc Brownie Smart Bar; the bars also differ in weight.
Compare kcal for each complete bar before looking at protein, sugars and carbohydrate on the same serving basis.
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Treating a protein snack as a complete supper
Myprotein describes its Soft Protein Bar as a snack, not a nutritionally complete meal. Its protein content alone does not establish that it can take the place of a varied supper.
Check the product’s intended role if you plan to use it instead of a meal, rather than relying on the word ‘protein’.
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Overlooking flavour-specific ingredients
Allergen statements differ between bars, and Grenade UK and PhD warn that excessive consumption of certain bars may cause laxative effects.
Read the ingredients, allergen statement and warnings for the exact flavour, particularly before buying a multipack.
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Buying a multipack before checking the flavour
An ingredient you need to avoid, or a flavour you do not want to eat repeatedly, can make a case impractical.
Check the exact flavour’s label and pack quantity before committing to multiple bars.
Brand references for comparing bars
The figures below belong to the named products and flavours, not every bar in a brand’s range.
Grenade
Grenade UK lists Peanut Nutter and Caramel Chaos among its 60g protein bars.
- Grenade UK lists 218 kcal and 20g protein for a Peanut Nutter bar.
- Peanut Nutter contains peanuts, milk and soy; Grenade also warns about excessive consumption because of polyols.
PhD
PhD offers Smart Bar multipacks in flavours with different nutrition figures.
- PhD lists 21g protein for a 64g Choc Brownie Smart Bar.
- That flavour has 250 kcal per bar, and PhD warns that excessive consumption may cause laxative effects.
Myprotein
Myprotein makes bars in different formats, including a High-Protein Bar and a Soft Protein Bar.
- Myprotein states 30g protein per High-Protein Bar, with nutrition information varying by flavour.
- Myprotein describes its Choc S'Mores Soft Protein Bar as a snack rather than a nutritionally complete meal.
Barebells
Barebells UK provides a per-bar nutrition panel for its 55g Cookies & Cream bar.
- Barebells UK lists 190 kcal, 20g protein and 3.5g fibre per Cookies & Cream bar.
- It contains milk proteins and collagen hydrolysate and may contain gluten-containing cereals, soy, peanuts and nuts.
Quest
Quest Nutrition publishes nutrition information for its S'Mores bar on a US product page.
- That US page lists 190 calories and 21g protein per 60g bar.
- Those are US-market figures; check the label of any specific UK product rather than applying them to another version.
Tesco
Tesco is a retailer listing protein bars from multiple brands, rather than the maker of a single protein-bar range.
- Its category includes individual bars and multipacks.
- A category listing cannot establish the ingredients or nutrition of a particular flavour; check its exact product label.
Joybuy protein bars
These Grenade bars offer different flavours and pack sizes to consider for an evening snack. Compare the current whole-bar nutrition and ingredient label for the exact variant before choosing.
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Grenade Soft Core Double Chocolate, 12 × 50g
A double-chocolate option for a planned evening snack. The pack contains twelve 50g bars; check the kcal per bar and the milk, soy and polyol information on the exact label.
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Grenade Soft Core Golden Caramel, 12 × 50g
A caramel-flavoured alternative if you prefer that flavour for an evening snack. The pack contains twelve 50g bars; compare whole-bar kcal and check the allergen and polyol declarations.
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Grenade Soft Core Peanut Butter, 12 × 50g
A peanut-butter-flavoured choice for an evening snack. The pack contains twelve 50g bars; check the complete nutrition panel and peanut, milk and soy declarations for this variant.
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Grenade Peanut Butter Protein Bar, 12 × 60g
This pack has twelve 60g bars for shoppers comparing a larger peanut-butter-flavoured portion. Check kcal and protein for the whole bar, plus its peanut, milk, soy and polyol information; do not apply figures from a differently named Grenade bar.
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Grenade Oreo Flavour Protein Bar, 4 × 60g
A four-bar pack with a different flavour and pack quantity from the peanut-butter listings. Each bar is 60g; compare its own whole-bar kcal and check the milk, gluten, soy and polyol information before choosing it for supper.
Questions about evening protein bars
How can I judge whether a protein bar fits a lower-calorie late supper?
Read the kcal figure for the whole bar and consider it alongside the rest of what you eat that evening. NHS Better Health advises paying attention to portions when reducing calories; ‘high protein’ and ‘low sugar’ do not tell you the bar’s energy total.
Can a protein bar take the place of supper?
Do not assume a protein snack is a complete meal. Myprotein explicitly describes its Soft Protein Bar as a snack rather than a nutritionally complete meal, so check a product’s intended role if you plan to eat it instead of supper.
Do allergens matter if a bar is labelled high protein or low sugar?
Yes. Check the exact flavour’s current pack: Barebells UK says Cookies & Cream contains milk proteins and may contain gluten-containing cereals, soy, peanuts and nuts, while Grenade UK says Peanut Nutter contains peanuts, milk and soy.
Why do some protein bars carry a laxative-effect warning?
Some bars contain polyols and carry an excessive-consumption warning. Grenade UK gives that warning for Peanut Nutter, and PhD gives one for its Smart Bars; read the warning on the particular pack you choose.