When should I call my doctor about problems taking potassium supplements?

Dr. Michael Roizen, MD
Internal Medicine

If you are experiencing confusion, black stools, gray skin that is cold or clammy, unusual feelings in your arms or legs such as tingling, burning, or tightness, stomach pain, leg weakness, or a sense of heaviness in your legs, call your doctor immediately. These symptoms are major red flags. Also, if the more common side effects like upset stomach, diarrhea, or vomiting stick around too long like a frustrating cold, it’s a good idea to call your doctor.

If you take potassium supplements, call your doctor right away if you have tingling or pulsating in your legs, arms or feet. Also call your doctor if you have any of the following symptoms:

  • confusion
  • cold, pale skin
  • stomach pain
  • bulging stomach
  • black stools
  • heaviness or weakness in your legs
  • lack of energy

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.