| NRV | 2000 mg |
|---|---|
| 15% NRV (minimum for most claims) | 300 mg |
| Example ingredient form | potassium citrate or potassium chloride |
| Authorised claims (examples) | 3 |
Showing Potassium in the nutrient table
Give the amount of Potassium per daily dose, in mg, and the %NRV. A daily dose of 200 mg works out as 200 ÷ 2000 × 100 = 10% NRV. Check other doses with our %NRV calculator.
The nutrient table names the nutrient. The ingredients list names the form used, such as potassium citrate.
Is there a maximum dose?
The UK has no legal maximum for potassium in food supplements. The Department of Health and Social Care advice, published on the NHS website, is: 3,700 mg or less a day from supplements is unlikely to have obvious harmful effects. Older people shouldn’t take potassium supplements unless a doctor advises it.
Authorised health claims
These are examples of authorised claims on the GB nutrition and health claims register. Use them word for word or with wording that means exactly the same, and only when the daily dose provides at least 15% of the NRV (300 mg).
- “Potassium contributes to normal functioning of the nervous system”
- “Potassium contributes to normal muscle function”
- “Potassium contributes to the maintenance of normal blood pressure”
Check the full register entry before you print: some claims have extra conditions. See our health claims guide and how to check a claim on the register.
Labelling notes
Potassium is bulky, so supplements rarely reach a high %NRV in a capsule. Electrolyte powders are the usual format.
Check before you print. Claims and dose advice are summarised from the GB nutrition and health claims register and the NHS vitamins and minerals pages, as of October 2026. Confirm your final wording against the register.