Anyone experience high bp and high liver enzymes after taking Ketruda

October 3, 2026Navis AI

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For informational purposes only

This answer was generated by AI grounded in NCCN guidelines and published medical literature. It is not medical advice. Always consult your oncologist or care team before making treatment decisions.

Sources & medical oversight

  • Built by OpenCancer’s team of physician-scientists and cancer survivors.
  • Last updated October 3, 2026. Informational only — not a substitute for your oncology team.

Keytruda Side Effects: High Blood Pressure & Liver Enzyme Changes

Yes, these are recognized side effects that some patients experience with Keytruda (pembrolizumab), an immunotherapy drug. Let me explain what's happening and what you should know.

Understanding These Side Effects

High Blood Pressure (Hypertension):

  • Immunotherapy drugs like Keytruda can trigger immune-related adverse events (irAEs)
  • High blood pressure occurs in roughly 5-10% of patients on checkpoint inhibitors
  • It can develop during treatment or even after starting the drug
  • Usually manageable with medication, but needs monitoring

Elevated Liver Enzymes:

  • Liver enzyme elevation (hepatotoxicity) is a known immunotherapy side effect
  • Occurs when the immune system becomes overactive and affects liver cells
  • Can range from mild (asymptomatic) to severe
  • Typically monitored through regular blood tests (AST, ALT, bilirubin levels)

Why This Happens

Keytruda works by "releasing the brakes" on your immune system to fight cancer. Sometimes this immune activation affects healthy organs—including the liver and blood vessels—causing these side effects.

What You Should Do NOW

This requires prompt communication with your oncology team:

  1. Have you already reported these findings to your doctor? If not, contact them immediately—don't wait for your next scheduled visit
  2. When did these changes start? (timing helps your doctor assess causation)
  3. How elevated are your values? (severity determines management approach)
  4. Are you having symptoms? (fatigue, jaundice, swelling, headaches?)

Questions to Ask Your Oncologist

  • Are these changes related to Keytruda, or could other factors be involved?
  • Do my liver enzyme levels require dose adjustment or temporary pause of treatment?
  • Do I need blood pressure medication, or can lifestyle changes help?
  • How frequently will you monitor these values going forward?
  • What symptoms should prompt me to seek immediate care?

Important Context

According to ASCO (American Society of Clinical Oncology) Guidelines on immunotherapy management, elevated liver enzymes and hypertension are manageable side effects that don't automatically mean stopping treatment—but they do require close monitoring and may need intervention.

The NCCN (National Comprehensive Cancer Network) Guidelines recommend regular lab monitoring during immunotherapy, with specific protocols for managing immune-related adverse events based on severity grades.


This information is for educational purposes only. Always consult your healthcare team for personalized medical advice and decisions.

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