E-Numbers to Avoid in Pregnancy — A Practical Watchlist
No authorised E-number carries an official 'avoid in pregnancy' instruction in normal foods — but these are the additive groups worth moderating, and why.
Benzoates (E210–E213) and sulphites (E220–E228) are declared allergens. Nitrites/nitrates (E249–E252) mark out cured meats, which the NHS already advises limiting in pregnancy. Aspartame (E951) is safe at normal intakes with one exception: women with PKU must avoid it entirely.
See also: E-numbers and pregnancy: what's safe and what to watch, and 247FoodCheck for a full pregnancy food safety guide covering which foods to eat and avoid.
This page is general information — discuss your diet with your midwife or GP.
The pregnancy watchlist
| E-Number | Name | Safety | Details |
|---|---|---|---|
| E210 | Benzoic Acid | Some concerns | Full details |
| E211 | Sodium Benzoate | Some concerns | Full details |
| E212 | Potassium Benzoate | Some concerns | Full details |
| E213 | Calcium Benzoate | Some concerns | Full details |
| E220 | Sulphur Dioxide | Some concerns | Full details |
| E249 | Potassium Nitrite | Some concerns | Full details |
| E250 | Sodium Nitrite | Some concerns | Full details |
| E251 | Sodium Nitrate | Some concerns | Full details |
| E252 | Potassium Nitrate | Some concerns | Full details |
| E951 | Aspartame | Some concerns | Full details |
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Pregnancy Nutrition Guide
Additive-Free Cooking
Reduce additives naturally by cooking from fresh ingredients.
Food Intolerance Test
Home test kit to identify which additives or foods are affecting you.
Data: Open Food Facts (ODbL) · EFSA. General information only — not medical or dietary advice.