Nimodipine — Uses, Dosage, Side Effects & Safety

Drug class: Calcium Channel Blocker (Dihydropyridine)

Overview

Nimodipine is a prescription medication used primarily to reduce the risk of brain damage caused by bleeding from a ruptured blood vessel in the brain, known as a subarachnoid hemorrhage (SAH). It is not used to treat high blood pressure or other heart conditions. Nimodipine works by relaxing and widening blood vessels in the brain, which helps improve blood flow and prevents blood vessel spasms that can lead to further brain injury after a hemorrhage. This action helps protect brain tissue and supports recovery. Key points for patients: Take nimodipine exactly as prescribed, usually by mouth every 4 hours. Do not inject or administer intravenously, as this can be fatal. Report any signs of low blood pressure, dizziness, or allergic reaction to your healthcare provider.

Therapeutic uses

• Subarachnoid hemorrhage (SAH)
• Cerebral vasospasm
• Ischemic neurological deficit

Common side effects

• Headache
• Nausea
• Dizziness
• Flushing
• Hypotension
• Bradycardia
• Edema

Frequently Asked Questions about Nimodipine

What is nimodipine used for?

Nimodipine is used to reduce the risk of brain damage after a subarachnoid hemorrhage (bleeding in the brain). It helps prevent blood vessel spasms that can worsen brain injury.

How should I take nimodipine?

Take nimodipine by mouth, usually every 4 hours, on an empty stomach. Swallow capsules whole and do not inject or administer intravenously.

What are the most common side effects?

Common side effects include headache, flushing, nausea, increased heart rate, and mild dizziness.

Can I take nimodipine with other medications?

Nimodipine can interact with many medications, especially those affecting liver enzymes (CYP3A4). Always inform your doctor about all medicines and supplements you are taking.

What should I do if I miss a dose?

Take the missed dose as soon as you remember, unless it is almost time for your next dose. Do not double up doses.

Is nimodipine safe during pregnancy or breastfeeding?

Nimodipine should only be used during pregnancy or breastfeeding if clearly needed and prescribed by your doctor, as safety is not fully established.

Why can't nimodipine be given intravenously?

Intravenous administration of nimodipine can cause severe, potentially fatal hypotension and cardiac complications. Only oral administration is approved.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.