People counting carbohydrate
Diabetes UK advises checking total carbohydrate on the back label. If you count carbohydrate, use the amount for the portion you will eat and follow your individual plan rather than judging a bar by its sugar claim.
Who needs which label information?
Shoppers also comparing fat
Compare fat per 100g across bars of different sizes, then look at saturated fat and the amount in the bar you intend to eat. Check total carbohydrate separately; a high-protein or low-sugar description does not answer either question.
Shoppers checking sweeteners and allergens
Read the ingredients, polyol information and allergen declaration for the exact flavour. Grenade and Quest describe sugar alcohols in their bars, while ingredients and allergen warnings differ between products.
What should you check before buying?
Check the amount in the bar you will eat, then use per-100g figures when comparing bars of different sizes.
| Priority | What to check | Your needs |
|---|---|---|
| Total carbohydrate | Find total carbohydrate on the back label. Check whether the stated serving is one whole bar or only part of it. | I count carbohydrate, so the amount in the portion I actually eat needs to fit my individual plan. |
| Sugar claims | Read sugars alongside total carbohydrate rather than using the front-of-pack claim alone. Tesco lists 1.4g sugars but 18g carbohydrate in a 60g Grenade Chocolate Chip Cookie Dough bar. | A low-sugar label is useful to notice, but I do not want to mistake it for a low total-carbohydrate figure. |
| Fat and saturated fat | Compare fat per 100g between different-sized bars. Check saturated fat and the amount in the portion as separate figures; traffic-light information does not show total carbohydrate. | If I am also trying to reduce fat, I need to compare that figure without losing sight of carbohydrate per bar. |
| Ingredients and allergens | Read the sweetener and polyol information, allergen declaration and any on-pack warning for the exact flavour. | Before choosing a multipack, I want to know whether its ingredients and allergen warnings work for me. |
Common label-reading mistakes
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Using sugar as the only carbohydrate check
A low sugar figure does not give the total carbohydrate in a bar. Tesco lists 1.4g sugars and 18g carbohydrate per 60g Grenade Chocolate Chip Cookie Dough bar.
Read total carbohydrate for the whole bar on the back label before deciding whether its portion fits your plan.
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Assuming less fat means less carbohydrate
Fat and carbohydrate are separate entries on the nutrition label. Comparing one does not establish the amount of the other.
If fat reduction matters to you, compare fat per 100g and check total carbohydrate per bar independently.
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Choosing a multipack before reading the ingredients
Some bars contain polyols and allergens that matter to the choice. Grenade warns that excessive consumption of its Caramel Chaos bar may have a laxative effect.
Check the exact flavour’s ingredients, allergen declaration and warnings before choosing a pack size.
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Relying on an older online nutrition panel
Tesco warns that food products can be reformulated, changing nutrition information, ingredients or allergens.
Recheck the current pack, particularly if you count carbohydrate, avoid an allergen or compare fat against a specific requirement.
Brand and retailer references
These examples show why figures and ingredients need to be checked for a particular bar and flavour, rather than assumed from its brand.
Grenade
Grenade sells dessert-style protein bars, including products described as low sugar.
- Tesco lists 21g protein, 1.4g sugars, 18g carbohydrate, 7.8g fat and 17g polyols per 60g Chocolate Chip Cookie Dough bar.
- That sugar figure does not establish a low-carbohydrate or reduced-fat snack; check the exact bar’s ingredients and allergen declaration too.
PhD
PhD presents its Smart Bar range as portable, high-protein, low-sugar snacks.
- PhD’s highlighted Smart Bar page displays 21g protein and 1g sugar for the featured product.
- Check total carbohydrate and fat on the selected flavour’s current pack rather than applying the featured figures across the range.
Myprotein
Myprotein offers bars with differing protein and carbohydrate amounts.
- Myprotein states that its Performance High-Protein Bar contains 30g protein and 23g carbohydrate per bar.
- Myprotein says nutrition can vary by flavour. Check the chosen bar’s label if you are counting carbohydrate or comparing fat.
Quest
Quest describes protein bars made with sugar alcohols.
- Quest advises that tolerance of sugar alcohols can vary.
- Check a UK retailer’s label for the exact bar instead of transferring nutrition figures from a US-labelled product.
Barebells
Barebells has protein bars listed by Tesco, including Cookies & Cream.
- Tesco’s Cookies & Cream listing states 20g protein and identifies sweeteners.
- Check total carbohydrate, fat and ingredients on the current label for the exact flavour before judging its fit.
Tesco
Tesco is a retailer listing protein bars from brands including Grenade and Barebells, not a protein-bar manufacturer in these examples.
- Its Grenade Chocolate Chip Cookie Dough listing gives figures per whole 60g bar, making sugars and total carbohydrate distinguishable.
- Tesco advises shoppers to read the pack because products can be reformulated.
Protein bars on Joybuy
These Grenade multipacks are options to assess if you want a protein bar and plan to check its carbohydrate portion. Their listing here does not establish that they meet a reduced-fat requirement or fit an individual diabetes plan; read the current pack before choosing.
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Grenade Soft Core Double Chocolate, 12 × 50g
For a counted snack, check total carbohydrate for one 50g bar against your own plan. This is a pack of 12; also check fat per 100g, polyols and allergens on the current label.
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Grenade Oreo Flavour, 4 × 60g
If the low-sugar description catches your eye, check total carbohydrate for a complete 60g bar as well. The pack contains four bars; compare fat per 100g and read the ingredients and allergens for this flavour.
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Grenade White Oreo, 12 × 60g
This 12-bar pack calls for the same portion check: read total carbohydrate for one 60g bar, not just sugars. Check the current label’s fat, polyol and allergen information before choosing the multipack.
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Grenade Soft Core Golden Caramel, 12 × 50g
If you are comparing 50g bars, use their per-100g fat figures alongside total carbohydrate per bar. This pack contains 12 bars; read the current ingredients, polyol information and allergen declaration for Golden Caramel.
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Grenade Soft Core Peanut Butter, 12 × 50g
Check total carbohydrate for a whole 50g bar if it needs to fit a counted snack. This is a pack of 12; inspect the current allergen declaration carefully for the Peanut Butter variant, along with fat and polyols.
Questions about choosing a bar
Does low sugar mean a protein bar is low in carbohydrate?
No. Diabetes UK advises checking total carbohydrate on the back label because it is not shown in front-of-pack traffic-light information. Use the figure for the whole bar or the portion you will eat, rather than relying on its sugar claim.
Does a lower-fat bar remove the need to check carbohydrate?
No. Fat and total carbohydrate are separate label figures. Compare fat per 100g if fat reduction matters to you, and check carbohydrate for the portion you intend to eat independently.
Why check polyols before buying a multipack?
Some protein bars contain polyols, and tolerance can vary. Grenade warns that excessive consumption of its Caramel Chaos bar may have a laxative effect; check the warning and ingredients for the exact bar you are considering.
What if I count carbohydrate for mealtime insulin?
Check the total carbohydrate in the portion and follow the individual approach agreed with your diabetes healthcare team. Diabetes UK explains that carbohydrate counting can help match insulin to food, but insulin-to-carbohydrate ratios differ between people.