Calorie-conscious late-night snackers
If you want a small snack, compare kcal for the whole bar alongside its protein content. A high-protein claim alone does not tell you how the full portion fits your plan.
Who is this choice for?
People considering a snack after late training
If protein is part of your reason for choosing a bar, check how much the actual bar provides. The examples from Tesco, Barebells and PhD differ in both protein and calories per serving.
Shoppers checking ingredients or dietary suitability
Read the exact flavour’s ingredient list, allergen information and sweetener warnings before buying. Formulations can differ, even among bars sold for similar occasions.
What should you check?
Start with the whole-bar serving, then decide whether its protein content, ingredients and portion size fit the snack you want.
| Priority | What to check | Your needs |
|---|---|---|
| Whole-bar calories | Compare kcal per bar, not just per 100 g. Check bar weight too: Tesco lists the Bio&Me Cocoa bar at 146 kcal per 40 g bar, while Barebells lists Cookies & Cream at 190 kcal per 55 g bar. | I want a small snack and need to know what the entire portion contributes. |
| Protein and portion | Compare protein and kcal on the same serving basis. The Tesco-listed Bio&Me Cocoa bar provides 9.2 g protein per 40 g bar; Barebells Cookies & Cream provides 20 g per 55 g bar. | If protein is my reason for buying a bar, I want to weigh the amount against the size of the snack. |
| Ingredients and allergens | Read the label for the exact flavour, including its sweeteners, allergen statement and dietary labelling. Barebells Cookies & Cream contains sweeteners and carries an excessive-consumption laxative-effect warning. | I would rather check a bar’s ingredients in advance than assume ‘low sugar’ tells me whether it suits me. |
| Timing and size | Consider whether a light snack meets the need. Oxford Health NHS Foundation Trust says an empty stomach can be distracting at bedtime, while a heavy meal or sugary snack late at night can interrupt sleep. | If I am hungry close to bed, I want a portion that addresses that hunger without treating every protein bar as a light snack. |
Common buying mistakes
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Assuming ‘high protein’ means low calorie
PhD lists its Cookies & Cream Smart Bar at 238 kcal and 20 g protein per serving; Barebells lists Cookies & Cream at 190 kcal and 20 g protein per bar. The protein figure alone does not describe the whole snack.
Compare kcal and protein per complete bar before choosing which serving fits your plans.
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Overlooking sweeteners on a low-sugar bar
A low-sugar description does not replace the ingredient list. Barebells Cookies & Cream contains sweeteners and warns that excessive consumption may have a laxative effect.
Check the exact flavour’s ingredients and warnings, particularly if you know a sweetener does not agree with you.
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Assuming a protein bar is automatically a light bedtime snack
Bars vary in portion size and calories. Oxford Health NHS Foundation Trust notes that a light snack can be useful when hunger is distracting, but a heavy meal or sugary snack late at night can interrupt sleep.
Choose according to how hungry you are and the portion you intend to eat, rather than relying on the ‘protein bar’ label.
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Choosing a multipack from another flavour’s nutrition panel
Myprotein lists different calorie figures for its Soft Protein Bar flavours, including 244 kcal for Double Dark Chocolate and 256 kcal for Caramel Nut.
Check the flavour and whole-bar nutrition on the pack you intend to buy.
Brand and retailer references
Barebells
Its Cookies & Cream protein bar offers a point of comparison for shoppers seeking 20 g protein in a bar under 200 kcal.
- Barebells lists 190 kcal and 20 g protein per 55 g Cookies & Cream bar.
- That product contains sweeteners and carries an excessive-consumption laxative-effect warning; check its full allergen label.
PhD
The Cookies & Cream Smart Bar is a more substantial serving than the sub-200 kcal examples discussed here.
- PhD lists 20 g protein and less than 1 g sugar per 64 g serving.
- The same serving is listed at 238 kcal; low sugar does not mean low calorie.
Myprotein
Its Soft Protein Bar range illustrates why flavour-specific nutrition matters.
- Myprotein lists 16 g protein per Soft Protein Bar, with stated flavour examples including 244 kcal for Double Dark Chocolate and 247 kcal for White Chocolate Cookie.
- Its separate High-Protein Bar contains collagen and milk protein and is not suitable for vegetarians or vegans, according to Myprotein.
Grenade
Grenade describes its protein-bar range as high in protein and low in sugar.
- The range offers several flavours for shoppers comparing protein bars.
- Check kcal and ingredients on the precise flavour rather than treating a range-wide low-sugar description as a whole-bar calorie figure.
Tesco
As a retailer rather than a single bar manufacturer, Tesco provides listings for comparing individual products.
- Its Bio&Me Cocoa Protein Bar listing states 146 kcal, 9.2 g protein and 7.6 g fibre per 40 g bar, and labels it suitable for vegans.
- Use the nutrition and ingredient information for the particular product and pack you choose.
Quest
Quest describes its protein bars on its global product pages; that description is not a UK-specific nutrition label.
- Quest states 20 g protein for the bars described in its product range.
- Check the UK label for the exact flavour before comparing its calories, ingredients or dietary suitability.
Protein bars on Joybuy
These multipacks offer different protein-bar flavours to consider for a late-night snack. Check the exact bar’s kcal, protein, ingredients and allergens before deciding whether its portion suits you.
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Grenade Soft Core Double Chocolate, 12 × 50 g
A 12-bar multipack for comparing the Double Chocolate flavour with your preferred late-night portion. Each bar is listed as 50 g; check its nutrition panel and ingredients for the exact variant.
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Grenade Soft Core Golden Caramel, 12 × 50 g
The Golden Caramel variant is listed as 12 individually sized 50 g bars. Compare its whole-bar nutrition and ingredient list with any other flavour you are considering.
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Grenade Soft Core Peanut Butter, 12 × 50 g
This Peanut Butter variant comes as 12 bars of 50 g. Check the exact pack’s allergen statement as well as its per-bar calories and protein.
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Grenade Jaffa Quake, 12 × 60 g
These bars are listed at 60 g each, rather than the 50 g size of the Soft Core multipacks above. Compare nutrition per whole bar before drawing a conclusion from the pack or flavour name.
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Nature Valley Protein Salted Caramel Nut, 4 × 40 g
A four-bar pack with 40 g per bar. If you want a smaller portion, compare its actual per-bar kcal and protein with the other bars, and read the allergen statement.
Frequently asked questions
Can a protein bar fit a smaller midnight snack?
Yes, if its whole-bar portion fits what you intend to eat. Tesco lists the Bio&Me Cocoa bar at 146 kcal and 9.2 g protein per 40 g bar, while Barebells lists Cookies & Cream at 190 kcal and 20 g protein per 55 g bar. Compare both measures rather than assuming lower calories and higher protein always come together.
Is a protein bar a good choice immediately before bed?
Base the choice on hunger and portion size, not on protein alone. Oxford Health NHS Foundation Trust says a light snack can be useful when an empty stomach is distracting, while a heavy meal or sugary snack late at night can interrupt sleep.
What if sweeteners do not agree with me?
Read the exact bar’s ingredients and warnings before buying. Barebells Cookies & Cream contains sweeteners and states that excessive consumption may have a laxative effect; a low-sugar claim does not answer whether a particular formulation suits you.
How do I check whether a bar meets my dietary requirements?
Check the exact product and flavour label for ingredients, allergens and dietary statements. Myprotein says its High-Protein Bar contains collagen and milk protein and is not suitable for vegetarians or vegans; Tesco labels the Bio&Me Cocoa Protein Bar suitable for vegans.