Potassium Sorbate
Last reviewed October 18, 2026 · Evidence strength: Very limited · How we grade evidence
In plain words: Potassium sorbate is one of the most common mold-fighters in food. Studies haven't shown it harms people at the amounts used in food. The irritation and allergy concerns come from skin products like lotions, and even those reactions are uncommon.
Also listed on labels as: Potassium sorbate, Sorbic acid (E200), E202
What is it, and why is it in food?
Sorbic acid was first found in rowan berries. Its salt, potassium sorbate, stops mold and yeast. It's in cheese, baked goods, snack cakes, dressings, dried fruit, wine and drinks.
What does the science say?
| The popular claim | "Potassium sorbate can cause skin, eye and respiratory irritation and allergic reactions." (Dr. Eric Berg, in a list that covers supplements and personal-care products) |
| Our verdict on that claim | Not supported |
| Evidence strength | Very limited: no human evidence of harm from food; claims rest on skin-product reports and lab or animal data. |
| Kinds of studies | EU safety review; lab and animal studies |
- Eating it: There's no human evidence of harm at food levels. Gut-bacteria claims rest on lab and animal data only.
- Skin: Irritation and contact allergy are reported from cosmetics, and they're uncommon.
What do regulators say?
- EFSA (2019) set a group safe daily limit of 11 mg per kg of body weight, based on a large multigeneration animal study.1
- FDA: GRAS.
Who should be careful?
- People with a known contact allergy to sorbates in creams should mention it to their doctor; eating it is a separate question.
- No special group needs to avoid it in food.
How common is it in US foods?
In our check of USDA's Branded Foods database, 41,958 of 438,129 US packaged foods with an ingredient list name potassium sorbate or sorbic acid (about 9.6%, or roughly 1 in 10).2 It shows up most often in: cakes, cupcakes, snack cakes (4,909); cheese (3,148); salad dressing & mayonnaise (1,957); breads & buns (1,666); dips & salsa (1,471). These are label records companies sent to USDA, mostly in 2021 to 2023, so some products have changed since. Counts come from a text match of ingredient lists and are approximate.
Swaps and tips for families
- No swap needed.
- Foods without preservatives mold faster, so buy smaller amounts or freeze bread and cheese.
Beyond the plate: related non-food exposures
Potassium sorbate is a common preservative in lotions, shampoos and cosmetics. Rare skin irritation is reported from those uses, which is the context of the claim.
Frequently asked questions
Is potassium sorbate bad for you?
No. There's no human evidence of harm from the amounts in food, and Europe set a generous safe daily limit.
Is potassium sorbate natural?
Sorbic acid occurs in some berries, but the version in food is made in factories. It's chemically the same.
Can potassium sorbate cause allergies?
Rarely, as a skin reaction to creams and cosmetics. Reactions from eating it aren't well documented.
Related guides
Sources
Every source below was checked against PubMed, the publisher or the official page by our research team in October 2026.
- Opinion on the follow-up of the re-evaluation of sorbic acid (E200) and potassium sorbate (E202) as food additives. EFSA journal. European Food Safety Authority, 2019. PubMed 32626251 · doi:10.2903/j.efsa.2019.5625
- FoodData Central, Branded Foods dataset (release 2026-04-30). U.S. Department of Agriculture, Agricultural Research Service, 2026. Link
This guide is for general education. It is not medical advice and does not replace advice from your doctor, pediatrician, allergist or registered dietitian. If you think you or your child reacted to a food, talk to a health professional. Research changes; we review these pages when new evidence or rules come out. Last reviewed October 18, 2026. Spotted an error? Email [email protected].