Other additives · Food additive

Potassium ascorbate (E303)

Updated October 2, 2026

Potassium ascorbate (E303) is a food additive in the “other additives” group. It appears in 13 products in our database, 5 of them sold in the US.

Quick facts

Also known as
E303
E-number
E303
Function
Other additives
Found in
13 products (5 sold in the US)

Foods that commonly contain Potassium ascorbate

Cakes 0% · 1
Confectioneries 0% · 1
Bars 0% · 1
Frozen foods 0% · 1
Beef dishes 0% · 1
Hummus 0% · 1
Spring waters 0% · 1
Cereal bars 0% · 1

Share of published products in each category whose ingredient list includes Potassium ascorbate.

Popular products with Potassium ascorbate

Peanut Butter Chocolate Chip Oat Bites e NOVA 4
Peanut Butter Chocolate Chip Oat Bites
Bobo's · 5 oat bites, 6.5 oz
432 kcal
16.2 Fat g
21.6 Sugar g
0.4 Salt g
per 100 g · 8.1 g protein
VeganVegetarian 1 allergen
Lemon Poppy Seed Oat Bar d NOVA 4
Lemon Poppy Seed Oat Bar
Bobo's · 3 oz
395 kcal
14 Fat g
23.3 Sugar g
0.4 Salt g
per 100 g · 7 g protein
Cereal bars
Jamaican Style Beef Patty NOVA 4
Jamaican Style Beef Patty
Caribbean food delights · 1
268 kcal
14.1 Fat g
1.4 Sugar g
1 Salt g
per 100 g · 8.5 g protein
2 allergens
Ched-shred NOVA 4
Ched-shred
Unknown brand
286 kcal
25 Fat g
0 Sugar g
1.9 Salt g
per 100 g · 0 g protein
P’jack Melts NOVA 4
P’jack Melts
Unknown brand
245 kcal
16.7 Fat g
0 Sugar g
2.3 Salt g
per 100 g · 0 g protein
VeganVegetarian
Panier de yoplait c NOVA 4
Panier de yoplait
Yoplait · 6
106 kcal
2.5 Fat g
16.7 Sugar g
0.1 Salt g
per 100 g · 2.8 g protein
Palm oil free 1 allergen
Wittmannsthaler Quelle a NOVA 4
Wittmannsthaler Quelle
Wittmannsthaler · 1,5 l
— kcal
— Fat
— Sugar
0.1 Salt g
per 100 ml
Spring waters
Hummus d NOVA 4
Hummus
salses fruits s&p
189 kcal
12 Fat g
1.8 Sugar g
3 Salt g
per 100 g · 6.5 g protein
Palm oil free
Boules cocos e NOVA 4
Boules cocos
Papagena · 120 g
602 kcal
44.6 Fat g
33.1 Sugar g
0.3 Salt g
per 100 g · 4.2 g protein
2 allergens
Macaronie aux boulettes de boeuf sauce tomate c NOVA 4
Macaronie aux boulettes de boeuf sauce tomate
collet · 300 g
250 kcal
5 Fat g
3.7 Sugar g
0.4 Salt g
per 100 g · 9.2 g protein
7 allergens

Potassium ascorbate-free alternatives

Popular products from the same categories that don't list Potassium ascorbate and score Nutri-Score A–C.

Malt Lunchbox Loaves c NOVA 4
Malt Lunchbox Loaves
Soreen · 150g
307 kcal
1.7 Fat g
22 Sugar g
0.5 Salt g
per 100 g · 7.7 g protein
VeganVegetarian 1 allergen
DONUT Juniors 12 RICH FROSTED a NOVA 4
DONUT Juniors 12 RICH FROSTED
Entenmann's
0 kcal
0 Fat g
0 Sugar g
0 Salt g
per 100 g · 0 g protein
4 allergens
Cupcakes a NOVA 4
Cupcakes
No Whey! Foods · 4 pack
Nutrition data not available
VeganVegetarian
Loaded Protein Cookie Browniez a NOVA 4
Loaded Protein Cookie Browniez
RYSE · 37.1 g
147 kcal
3 Fat g
2 Sugar g
0.8 Salt g
per 100 g · 25 g protein
3 allergens
Protein Bar, Chocolate Fudge Brownie c NOVA 4
Protein Bar, Chocolate Fudge Brownie
ALOHA
393 kcal
19.6 Fat g
8.9 Sugar g
0.4 Salt g
per 100 g · 25 g protein
Palm oil free

How to spot Potassium ascorbate on a label

Look for any of these names in the ingredient list:

Potassium ascorbateE303

Related additives

Silicon dioxide · E551Glycerol · E422Acacia gum · E414Gelatine · E428Malic acid · E296Ammonium carbonates · E503 All other additives

Frequently asked questions

What foods contain Potassium ascorbate?

In our database, Potassium ascorbate most often appears in cakes, confectioneries, bars and frozen foods.

How many products contain Potassium ascorbate?

13 published products on Foodmetria list Potassium ascorbate, including 5 sold in the United States. Counts come from ingredient lists in Open Food Facts and update daily.

Product data: Open Food Facts (ODbL), updated daily. Additive information is for general education and is not medical advice. Always check the package label. Our methodology.