About
Potassium is an essential dietary mineral and electrolyte required for normal cell function, fluid balance, nerve impulse transmission, and muscle contraction. It is naturally present in many foods and is also added in the form of potassium salts (e.g., potassium chloride) as a sodium substitute, stabiliser, or acidity regulator in processed foods.
Safety summary
Potassium is safe and beneficial for the general adult population at recommended dietary intake levels (3,500–4,700 mg/day); no tolerable upper intake level (UL) has been formally established for potassium from food sources by EFSA or WHO. Excess potassium intake (hyperkalemia) poses a risk primarily to individuals with impaired kidney function, who cannot excrete surplus potassium efficiently. Low potassium intakes are associated with elevated blood pressure and increased stroke risk in the general population.
Regulatory landscape
| Jurisdiction | Status | Note |
|---|---|---|
| EFSA (European Food Safety Authority) (European Union) | Approved | EFSA Panel on Dietetic Products, Nutrition and Allergies set an Adequate Intake (AI) of 3,500 mg/day for adult men and women. No formal UL has been set for potassium from food. Potassium salts (e.g., E 508 potassium chloride) are approved food additives under Regulation (EC) No 1333/2008. For lactating women the AI is 4,000 mg/day.source |
| FSSAI (Food Safety and Standards Authority of India) (India) | Approved | FSSAI FSS (Food Products Standards and Food Additives) Regulations 2011 permit use of potassium salts as food additives and salt substitutes. When a potassium salt is used as a salt substitute, total potassium expressed as mg cation per 100 g must be declared on the label. Note: FSSAI has banned potassium bromate specifically, which is a distinct compound.source |
| FDA (Food and Drug Administration) (United States) | Approved | Potassium chloride is affirmed as GRAS under 21 CFR 184.1622. Recommended dietary intake for adults is 4,700 mg/day. No formal UL set for food-source potassium; excess from supplements/salt substitutes may be hazardous to those with kidney disease.source |
Who should approach with care
Research citations
- 1FSSAI. FSS (Food Products Standards and Food Additives) Regulations 2011 — Chapter 2.11: Other Food Products and Ingredients. fssai.gov.in
- 2PubMed. Are Food Additives a Really Problematic Hidden Source of Potassium for Chronic Kidney Disease Patients? — PMC (Nutrients, 2021), 2021. ncbi.nlm.nih.gov
- 3FDA. Agency Response Letter GRAS Notice No. GRN 000618 — Potassium Chloride (21 CFR 184.1622), 2018. fda.gov
- 4PubMed. Revised Reference Values for Potassium Intake — PMC (Nutrition Reviews, 2017), 2017. pmc.ncbi.nlm.nih.gov
- 5EFSA. Dietary reference values for potassium — EFSA Journal 2016;14(10):4592, 2016. efsa.europa.eu
- 6EFSA. Dietary reference values: advice on potassium — EFSA Press Release, 2016. efsa.europa.eu
