Foods Containing E101 (Riboflavin)
E101 (Riboflavin) is produced by fermentation, though it can historically be sourced from milk or eggs, used as a food colouring to help add or restore colour to foods and drinks. Here's where you're most likely to find it on food labels.
Common foods that contain E101
E101 is used across sweets, soft drinks, desserts, ice cream, sauces and snacks. The foods where it appears most often include:
- Sweets
- Soft drinks
- Desserts
- Ice cream
- Sauces and snacks
Exact usage varies by brand and recipe — the only way to know for certain whether a specific product contains E101 is to check its ingredients list, where it must be declared by law, either as "E101" or as "Riboflavin".
How to spot E101 on a label
In the UK and EU, additives must appear in the ingredients list with their function and either their E-number or full name — for example "food colourings: E101" or "food colourings: riboflavin". In the US the E-number system isn't used, so look for the full name "Riboflavin" instead.
Should you avoid foods containing E101?
E101 is considered safe. It is authorised across the EU, UK and US, and safety evaluations by the European Food Safety Authority (EFSA) have not identified health concerns at the levels used in food. For most people there is no reason to avoid E101.
Full guide to E101: safety, vegan and halal status →
This section contains affiliate links. We may earn a small commission if you purchase through our links, at no extra cost to you.
Want to avoid E101?
Additive-free eating
Cookbooks and guides for cooking without additives.
Additive data sourced from Open Food Facts (ODbL licence) and the European Food Safety Authority (EFSA).