Side effects of flunarizine: What you need to know
  • May, 6 2023
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Introduction to Flunarizine

As a health-conscious individual, it's essential to be informed about the medications we take and their potential side effects. Today, I will be discussing flunarizine, a calcium channel blocker commonly prescribed for the prevention of migraines and other vascular headaches. While flunarizine has been proven to be quite effective, there are some side effects that you need to be aware of. In this article, I'll be going over nine essential topics related to these side effects, so you can make an informed decision about whether flunarizine is right for you.

Common Side Effects of Flunarizine

As with any medication, there are some common side effects associated with flunarizine. While not everyone will experience these side effects, it's important to be aware of them. Some of the most common side effects include drowsiness, weight gain, nausea, and dry mouth. In most cases, these side effects are mild and will go away on their own as your body adjusts to the medication. However, if they persist or worsen, it's important to consult with your healthcare provider to discuss your options.

Depression and Flunarizine

One of the more concerning side effects of flunarizine is its potential to cause or worsen depression. This is because flunarizine can affect the levels of certain chemicals in the brain that are responsible for regulating mood. If you have a history of depression or are currently taking medication for depression, it's essential to discuss this with your healthcare provider before starting flunarizine. They may recommend an alternative treatment or closely monitor your mental health while you're taking the medication.

Effects on the Liver

Another important side effect to be aware of is flunarizine's potential impact on the liver. In rare cases, this medication can cause liver damage, which may lead to serious health complications. To minimize this risk, your healthcare provider will likely perform regular blood tests to monitor your liver function while you're taking flunarizine. If you notice any signs of liver problems, such as dark urine, yellowing of the skin or eyes, or severe abdominal pain, contact your healthcare provider immediately.

Interactions with Other Medications

Flunarizine may interact with other medications, leading to increased side effects or decreased effectiveness. Some common medications that may interact with flunarizine include antihistamines, other calcium channel blockers, and certain antidepressants. It's crucial to inform your healthcare provider of all the medications you're currently taking, including over-the-counter medications and supplements, to ensure there are no harmful interactions.

Pregnancy and Breastfeeding

If you're pregnant or planning to become pregnant, it's important to discuss the potential risks and benefits of taking flunarizine with your healthcare provider. While there is limited data on the effects of flunarizine during pregnancy, it's generally recommended to avoid this medication during pregnancy unless the benefits outweigh the risks. Additionally, flunarizine may pass into breast milk and could potentially harm a nursing infant. If you're breastfeeding or planning to breastfeed, discuss this with your healthcare provider before starting flunarizine.

Managing Side Effects

If you do experience side effects while taking flunarizine, there are some strategies that may help manage them. For drowsiness, it might be helpful to take the medication at bedtime to minimize daytime sleepiness. If you're experiencing dry mouth, consider sipping water throughout the day, chewing sugar-free gum, or using a saliva substitute. If you're struggling with weight gain, focus on maintaining a healthy diet and incorporating regular physical activity into your routine. Remember, it's essential to consult with your healthcare provider if your side effects are persistent or bothersome.

When to Seek Medical Attention

While most side effects of flunarizine are mild and manageable, there are some instances where immediate medical attention is necessary. If you experience any of the following symptoms, contact your healthcare provider or seek emergency medical care: severe allergic reactions, signs of liver problems, worsening depression or suicidal thoughts, or signs of an overdose.


Flunarizine can be an effective treatment option for preventing migraines and other vascular headaches. However, it's important to be aware of the potential side effects and discuss them with your healthcare provider before starting the medication. By understanding the risks and benefits, you can make an informed decision about whether flunarizine is the right choice for you. Always remember to consult with your healthcare provider if you have any concerns about side effects or if you're unsure about whether flunarizine is appropriate for your situation.

Caspian Osterholm

Caspian Osterholm

Hi, I'm Caspian Osterholm, a pharmaceutical expert with a passion for writing about medication and diseases. Through years of experience in the industry, I've developed a comprehensive understanding of various medications and their impact on health. I enjoy researching and sharing my knowledge with others, aiming to inform and educate people on the importance of pharmaceuticals in managing and treating different health conditions. My ultimate goal is to help people make informed decisions about their health and well-being.

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