Shoppers checking sugars
If you want a digestive labelled sugar-free, compare its sugars per 100 g with reduced-sugar and standard biscuits. Check carbohydrate separately: the two figures answer different questions.
Who is this choice for?
People planning a snack before exercise
Consider when you last ate, when you will exercise and what you expect the snack to provide before deciding whether a biscuit fits.
Shoppers checking sweeteners and allergens
If ingredients matter to you, read the pack for polyol sweeteners, consumption warnings and allergen declarations before eating close to a workout.
What should you check before choosing?
Start with the sugar claim, then assess the portion and timing of the snack; a sugar-free biscuit is not automatically the right choice for every session.
| Priority | What to check | Your needs |
|---|---|---|
| Sugar claim | Check the exact claim and sugars per 100 g. Legislation.gov.uk gives no more than 0.5 g per 100 g as the sugar-free threshold; McVitie's describes The Light One as reduced-sugar, not sugar-free. | If I specifically want a sugar-free biscuit, a reduced-sugar name will not settle the choice. |
| Snack timing | Consider your last meal and the time until exercise. University College London Hospitals NHS Foundation Trust describes exercise snacks in terms of their purpose and nutrients, including carbohydrate and protein. | I want to decide whether I need a snack before choosing a biscuit to eat. |
| Ingredients | Read the sweeteners, allergen declarations and consumption warning. Joybuy lists isomalt and maltitol in Gullón Zero Original Digestives, along with wheat, a possible milk or soya presence and a warning about excessive consumption. | Before eating close to training, I want to know what is in the biscuit and whether its warnings matter to me. |
| Portion comparison | Compare sugars and carbohydrate on the same per-100 g basis, then check the amount you intend to eat. Joybuy lists Gullón Zero at less than 0.5 g sugars and 68 g carbohydrate per 100 g; Sainsbury's lists 16.3 g sugars per 100 g for its standard Digestives. | A whole-pack label is not my portion. I want to compare the biscuits I might actually eat without treating sugar-free as carbohydrate-free. |
What is easy to overlook?
-
Reading ‘reduced sugar’ as ‘sugar-free’
McVitie's lists 8.9 g sugars per 100 g for The Light One. That does not meet the sugar-free threshold of no more than 0.5 g per 100 g stated by legislation.gov.uk.
For a sugar-free requirement, check both the claim and the sugars figure on the current pack.
-
Choosing workout fuel by the sugar claim alone
Joybuy lists 68 g carbohydrate per 100 g for Gullón Zero Original Digestives. A sugar-free claim does not tell you whether a biscuit suits the timing or purpose of your snack.
Decide whether you need to eat before the session, then assess the amount you plan to have.
-
Missing sweeteners and allergens
The listed Gullón Zero biscuit contains isomalt, maltitol and wheat, may contain milk or soya, and carries a warning that excessive consumption may have a laxative effect.
Read the delivered pack's ingredients, allergen declarations and warning before eating it.
Relevant biscuit brands
These named recipes illustrate different sugar claims and ingredients; a brand name alone does not establish what another recipe contains.
Gullón Zero
Its Original Digestives 400 g are listed by Joybuy as sugar-free.
- Joybuy lists less than 0.5 g sugars and 68 g carbohydrate per 100 g.
- The listing names isomalt, maltitol and wheat, and carries an excessive-consumption warning.
McVitie's
The Light One is a reduced-sugar digestive, rather than a sugar-free one.
- McVitie's describes this recipe as having 30% less sugar than the average digestive biscuit.
- Its listed 8.9 g sugars per 100 g does not make The Light One sugar-free; the maker's comparison does not apply to every other recipe.
Sainsbury's
Its own-label Digestives 400 g provide a standard-biscuit comparison.
- Sainsbury's lists 16.3 g sugars and 66.6 g carbohydrate per 100 g for this recipe.
- The listed biscuit contains sugar and is not a sugar-free substitute.
ASDA
Its Digestive Biscuits 400 g are another standard recipe to compare by label.
- ASDA lists 16 g sugars per 100 g for this product.
- The ingredient list includes sugar and invert sugar syrup, so this recipe does not meet a sugar-free requirement.
Tesco
Its own-label Digestive Biscuits 400 g offer a standard-recipe comparison.
- Tesco lists 15.3 g sugars per 100 g for this product.
- The recipe includes sugar and is not a sugar-free option.
M&S
Its Digestive Biscuits 400 g are a conventional recipe containing demerara sugar.
- M&S lists 18.2 g sugars per 100 g for this product.
- This recipe contains sugar ingredients and does not meet a sugar-free requirement.
Crawford's
The listed Digestives 400 g are a conventional biscuit comparison.
- Iceland Foods identifies wholemeal wheat flour in this Crawford's recipe.
- Its ingredient list also includes sugar and partially inverted sugar syrup; do not treat this recipe as sugar-free.
Sugar-free digestive on Joybuy
This Joybuy biscuit is a sugar-free digestive to assess for a pre-workout snack. Check its nutrition against the amount you intend to eat rather than using the sugar claim alone.
No image available
Gullón Zero Sugar Free Original Digestives 400 g
For a snack where a sugar-free biscuit is the priority, Joybuy lists less than 0.5 g sugars and 68 g carbohydrate per 100 g; check the amount you plan to eat. The listing names isomalt and maltitol, states that the biscuits contain wheat and may contain milk or soya, and warns that excessive consumption may have a laxative effect.
Questions about pre-workout digestives
Does sugar-free mean carbohydrate-free?
No. Joybuy lists Gullón Zero Original Digestives at less than 0.5 g sugars but 68 g carbohydrate per 100 g. Use the amount you intend to eat when comparing biscuits.
Do I need a biscuit before every workout?
Not necessarily. Consider when you last ate and the purpose of a snack before deciding whether to have one. University College London Hospitals NHS Foundation Trust describes exercise snacks in terms of their nutrients and the activity they accompany; a biscuit should not be assumed to meet every snack need.
Is a reduced-sugar digestive the same as a sugar-free one?
No. McVitie's calls The Light One reduced-sugar and lists 8.9 g sugars per 100 g. For a sugar-free claim, legislation.gov.uk gives a threshold of no more than 0.5 g sugars per 100 g, so check the exact pack rather than treating the claims as interchangeable.
How should I store an opened pack of Gullón Zero digestives?
Follow the pack instructions. The Morrisons listing for Zero Sugar Free Original Digestive Biscuits says to keep the pack cool and dry, protect it from sunlight and close it after opening.