IV / Oral
Verapamil
Isoptin
- Mechanism of Action
- Inhibits L-type calcium channels on ventricular myocardial, cardiac nodal and arteriolar smooth muscle cells.
- Pharmacology
- Non-selectively inhibit calcium channels in the heart and arterioles, resulting in cardiac depression and vasodilation.
Clinical Use
- Indications
- Hypertension
- Angina pectoris
- Rate control of atrial fibrillation
- Prophylaxis for paroxysmal supraventricular tachycardia (verapamil)
- Prevention of cluster headaches (verapamil)
- Prophylaxis of migraine (verapamil)
- Contraindications
- AV block
- Heart failure
- Beta blockers – due to cardio depression
- Adverse Effects
- Constipation
- Dizziness
- Headache
- Nausea
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