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Nimodipine Side Effects

In Summary

More frequently reported side effects include: hypotension. See below for a comprehensive list of adverse effects.

For the Consumer

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

Along with its needed effects, nimodipine 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
  • Blurred vision
  • chest pain or discomfort
  • confusion
  • difficult or labored breathing
  • fast, pounding, or irregular heartbeat or pulse
  • lightheadedness, dizziness, or fainting
  • shortness of breath
  • slow or irregular heartbeat
  • sweating
  • swelling
  • tightness in the chest
  • unusual tiredness or weakness

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
  • Abdominal or stomach cramps, discomfort, or pain
  • back pain
  • blemishes on the skin
  • constipation
  • diarrhea
  • discouragement
  • feeling sad or empty
  • headache
  • indigestion
  • irritability
  • lack or loss of appetite
  • loss of interest or pleasure
  • muscle pain
  • nausea or vomiting
  • pimples
  • rash
  • swollen mouth and tongue
  • tiredness
  • trouble concentrating
  • trouble sleeping
  • unpleasant taste
  • urge to have bowel movement

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. Cerner Multum, Inc. "Australian Product Information." O 0

2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

3. "Product Information. Nimotop (nimodipine)." Bayer, West Haven, CT.

Some side effects of nimodipine may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.