Nimodipine (Nymalize) is used to help prevent brain damage after an aneurysmal subarachnoid hemorrhage (a type of brain bleed). Your provider will typically start this medication in the hospital as soon as possible, but usually within 4 days of a subarachnoid hemorrhage. Nimodipine (Nymalize) is taken by mouth or given through a feeding tube every 4 hours for 3 weeks. Generic nimodipine comes as an oral capsule, while brand name Nymalize (nimodipine) comes as an oral liquid. The most common side effect of nimodipine (Nymalize) is low blood pressure, so your provider will check your blood pressure regularly while you're taking this medication.
Prevention of brain damage after a type of brain bleed called an aneurysmal subarachnoid hemorrhage (aSAH)
Nimodipine (Nymalize) is a calcium channel blocker. The exact way it works to help people after a brain bleed isn't known. But it's thought to relax the blood vessels in your brain to maintain blood flow and possibly prevent vasospasm. This helps to prevent further damage to the brain after a subarachnoid hemorrhage.
Source: DailyMed
Along with its needed effects, a medicine 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:
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 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
discouragement
feeling sad or empty
headache
indigestion
irritability
lack or loss of appetite
loss of interest or pleasure
nausea or vomiting
rash
swollen mouth and tongue
tiredness
trouble concentrating
trouble sleeping
unpleasant taste
urge to have bowel movement
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
Prevents worsening of brain function after brain bleed
Available in liquid form if you can't swallow the capsule
Treatment typically lasts 3 weeks
Low risk of serious side effects
Can interact with some common medications and supplements
Needs to be taken every 4 hours
Needs to be taken on an empty stomach
Can lower blood pressure and cause dizziness
Swallow nimodipine (Nymalize) capsules whole. If you're having trouble swallowing the capsules, contact your provider. They might be able to recommend other options for you, such as nimodipine (Nymalize) oral solution.
Take nimodipine (Nymalize) at least 1 hour before or 2 hours after a meal. It might be helpful to plan your meals since you need to take this medication every 4 hours.
You might feel dizzy when you start taking nimodipine (Nymalize) because it can lower your blood pressure. Also, taking nimodipine (Nymalize) with other blood pressure medications can cause your blood pressure to drop too much. Your provider might have you measure and record your blood pressure at home while taking nimodipine (Nymalize).
Make sure your medical team knows all the medications you're currently taking as soon as possible. This is because some medications, including the ones you might restart after you leave the hospital, can interact with nimodipine (Nymalize). For example, antibiotics like azithromycin (Zithromax) and fluconazole (Diflucan) can raise the level of nimodipine (Nymalize) in your body. Taking these medications together can raise your risk for side effects, like low blood pressure.
Avoid grapefruit or grapefruit juice while taking nimodipine (Nymalize) because it can raise the amount of the medication in your body, which raises your risk of side effects.
More tips for Nymalize (nimodipine) liquid only
If giving Nymalize (nimodipine) through a feeding tube, carefully flush the feeding tube after each dose with 10 mL of saline solution to make sure that all of the medication gets into the stomach. Never administer nimodipine (Nymalize) as an injection into the veins due to risk of severe and life-threatening harm.
Only use the oral syringe that comes with the medication to measure out your dose. Don't use household spoons because they aren't accurate and might cause you to take the wrong dose.
Nimodipine (Nymalize) can cause some serious health issues. This risk may be even higher for certain groups. If this worries you, talk to your doctor or pharmacist about other options.
Nimodipine (Nymalize) should only be given by mouth or in a feeding tube. Never inject nimodipine (Nymalize) into the veins because this can cause very serious and life-threatening heart and blood pressure
Risk factors: Taking other medications that lower blood pressure | Not enough fluid in your body | Having diarrhea or vomiting for a long time | Low salt levels in your body
Sometimes, taking nimodipine (Nymalize) can cause your blood pressure to drop too much. This can cause you to feel dizzy, tired, or lightheaded. Because of this, your provider will check your blood pressure regularly while you're taking nimodipine (Nymalize) at the hospital. Continue to check your blood pressure regularly after you're discharge from your hospital stay. To lower your risk of falls, sit down slowly while holding onto something stable. If you fall and hit your head, get medical help right away. If the dizziness is very bothersome or if you have other symptoms of low blood pressure, such as blurry vision or nausea, talk to your provider.
Make sure your medical team knows all the medications you're currently taking as soon as possible. This is because some medications, including the ones you might restart after you leave the hospital, can interact with nimodipine (Nymalize). For example, certain antibiotics or antivirals, such as clarithromycin (Biaxin) and ritonavir (Norvir) can raise the level of nimodipine (Nymalize) in your body, which can put you at higher risk for dangerously low blood pressure. Another example is that certain medications, such as carbamazepine (Tegretol) or phenytoin (Dilantin), can lower the level of nimodipine (Nymalize) in your body and cause it to not work as well. Ask your medical team to review all your current medications before you leave the hospital to make sure that there aren't any serious interactions with nimodipine (Nymalize).
Your provider will start nimodipine (Nymalize) for you as soon as possible, but within 4 days of a subarachnoid hemorrhage.
The typical dose is 60 mg by mouth every 4 hours for 3 weeks.
Your dose might be different if you've liver problems.
Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.
Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
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American Heart Association. (2016). Low blood pressure – when blood pressure is too low.
American Heart Association. (2021). What is an aneurysm?
Azurity Pharmaceuticals. (2023). Nymalize [package insert]. DailyMed.
Bauer, A. M., et al. (2014). Treatment of intracranial vasospasm following subarachnoid hemorrhage. Frontiers in Neurology.
Chong, J. Y. (2022). Subarachnoid hemorrhage (SAH). Merck Manual Professional Version.
Connolly Jr., E. S., et al. (2012). Guidelines for the management of aneurysmal subarachnoid hemorrhage. Stroke.
D'Souza, S. (2015). Aneurysmal subarachnoid hemorrhage. Journal of Neurosurgical Anesthesiology.
Hao, G., et al. (2022). Clinical effectiveness of nimodipine for the prevention of poor outcome after aneurysmal subarachnoid hemorrhage: A systematic review and meta-analysis. Frontiers in Neurology.
U.S. Food and Drug Administration. (2021). Grapefruit juice and some drugs don't mix.
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