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Nimotop Side Effects

Generic name: nimodipine

Medically reviewed by Last updated on Dec 15, 2023.

Note: This document contains side effect information about nimodipine. Some dosage forms listed on this page may not apply to the brand name Nimotop.

Applies to nimodipine: oral capsule liquid filled, oral solution.


Oral route (Capsule, Liquid Filled)

Do not administer nimodipine intravenously or by other parenteral routes. Deaths and serious, life threatening adverse events have occurred when the contents of nimodipine capsules have been injected parenterally.

Serious side effects of Nimotop

Along with its needed effects, nimodipine (the active ingredient contained in Nimotop) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking nimodipine:

Less common

Other side effects of Nimotop

Some side effects of nimodipine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common

For Healthcare Professionals

Applies to nimodipine: oral capsule, oral liquid.


The most commonly reported side effects included decreased blood pressure, diarrhea, and rash.[Ref]


Very common (10% or more): Decreased blood pressure (up to 50%)

Common (1% to 10%): Bradycardia, edema, EKG abnormalities, flushing, tachycardia

Uncommon (0.1% to 1%): Hypotension, vasodilation

Frequency not reported: Congestive heart failure, deep vein thrombosis, hematoma, hypertension, palpitations, rebound vasospasm[Ref]


Common (1% to 10%): Diarrhea, gastrointestinal symptoms, nausea

Rare (0.01% to 0.1%): Ileus

Frequency not reported: Gastrointestinal hemorrhage, vomiting[Ref]


Common (1% to 10%): Acne, rash

Frequency not reported: Diaphoresis, itching[Ref]


Common (1% to 10%): Cramp, muscle pain[Ref]


Common (1% to 10%): Abnormal liver function test

Uncommon (0.1% to 1%): Elevated alkaline phosphatase levels, elevated ALT levels

Rare (0.01% to 0.1%): Transient increase in liver enzymes

Frequency not reported: Hepatitis, jaundice[Ref]

Nervous system

Common (1% to 10%): Headache

Frequency not reported: Alterations in consciousness, dizziness, lightheadedness, neurological deterioration[Ref]


Common (1% to 10%): Dyspnea

Frequency not reported: Wheezing[Ref]


Common (1% to 10%): Depression[Ref]


Uncommon (0.1% to 1%): Decreased platelet counts, thrombocytopenia

Frequency not reported: Anemia, disseminated intravascular coagulation[Ref]


Uncommon (0.1% to 1%): Allergic reaction[Ref]


Rare (0.01% to 0.1%): Injection site reaction, infusion site phlebitis, infusion site reaction, infusion site thrombophlebitis[Ref]


Frequency not reported: Phenytoin toxicity[Ref]


Uncommon (0.1% to 1%): Elevated lactate dehydrogenase levels, fluid retention, non-fasting elevated serum glucose levels

Frequency not reported: Hyponatremia[Ref]


1. (2002) "Product Information. Nimotop (nimodipine)." Bayer

2. Cerner Multum, Inc. "UK Summary of Product Characteristics."

3. Cerner Multum, Inc. "Australian Product Information."

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.