What dietary advice should I provide to patients with hyperkalaemia to help manage their potassium levels?

Guideline-aligned answer with reasoning, red flags and references. Clinically reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP.

Posted: 16 August 2025 Guideline-Aligned (High Confidence) Clinically Reviewed
Dr Kola Tytler MBBS CertHE MBA MRCGPClinical Lead • iatroX

Dietary advice for patients with hyperkalaemia to manage potassium levels includes:

  • Advise patients to limit intake of high-potassium foods such as bananas, oranges, tomatoes, potatoes, green leafy vegetables, nuts, seeds, legumes, and certain fruits like apricots and raisins.
  • Encourage consultation with a specialist renal dietitian for individualised dietary assessment and advice, especially in patients with chronic kidney disease, as they may require tailored potassium and phosphate management.
  • Recommend avoiding salt substitutes that contain potassium and be cautious with medications or supplements that may increase potassium levels.
  • Monitor serum potassium regularly to assess the effectiveness of dietary modifications and adjust advice accordingly.

This advice aims to reduce potassium intake to prevent or manage hyperkalaemia, particularly in patients with impaired renal function or those on medications that increase potassium retention.

Note: The provided context primarily focuses on hypokalaemia and chronic kidney disease management but does not explicitly detail hyperkalaemia dietary advice. However, standard clinical practice and NICE guidelines for hyperkalaemia management recommend potassium restriction in diet as a key measure.

Educational content only. Always verify information and use clinical judgement.