What are the signs and symptoms of calcium channel blocker (CCB) overdose?

Updated: Jan 04, 2021
  • Author: B Zane Horowitz, MD, FACMT; Chief Editor: Michael A Miller, MD  more...
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When calcium channel blocker ingestion is suspected, specifically question the patient or family about symptoms that may indicate cardiac or pulmonary manifestations of calcium channel blocker toxicity. Signs and symptoms may include any of the following:

  • Chest pain
  • Palpitations
  • Diaphoresis
  • Flushing
  • Weakness
  • Peripheral edema
  • Dyspnea
  • Drowsiness
  • Confusion
  • Seizure
  • Dizziness
  • Syncope
  • Headache
  • Nausea
  • Vomiting

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