#calcium_blocker__calciumblocker__calcium-channel_blocker__calciumchannelblocker  any of a class of drugs that block the flow of the electrolyte calcium (either in nerve cell conduction or smooth muscle contraction (of the heart)); has been used in the treatment of angina or arrhythmia or hypertension or migraine
  supertype:  medicament__medicine__medication__medicinal_drug__medicinaldrug  something that treats or prevents or alleviates the symptoms of disease
  subtype:  diltiazem__Cardizem  a calcium blocker (trade name Cardizem) used in treating hypertension or angina or heart failure
  subtype:  nifedipine__Procardia  calcium blocker (trade name Procardia); appears to increase the risk of recurrent heart attacks
  subtype:  verapamil__Calan__Isoptin  a drug (trade names Calan and Isoptin) used as an oral or parenteral calcium blocker in cases of hypertension or congestive heart failure or angina or migraine

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