Sibelium (Flunarizine) is prescribed for the prophylactic treatment of migraine. It can also help manage dizziness of vestibular/cerebrovascular origin, and peripheral circulation disorders caused by organic arteriopathies.





Janssen Pharma


5 mg




In pharmacology, comprehending drugs such as Sibelium can feel like maneuvering through a convoluted puzzle. Sibelius, primarily intended for preventing migraines, is a pharmaceutical with various benefits. It's essential to recognize that the significance of any medication lies not in its uses but also in its diverse range of side effects and potential interactions. This article endeavors to provide a manual elucidating the intricacies surrounding Sibelium, including its chemical composition and how it interacts with other substances.

What is Sibelium?

The chemical composition of Sibelium consists of flunarizine, a powerful calcium channel blocker. The specific inactive ingredients may vary depending on the company manufacturing the drug but commonly include substances like lactose and magnesium stearate. Sibelium falls under the class of calcium channel blockers and is often grouped with medications that regulate calcium levels in cells, impacting muscle contraction and nerve impulses. It's worth noting that although Sibelius is widely used worldwide, it has not yet received approval from the FDA in the United States, as per my update.

How Sibelium Works

Mechanism of Action; Essentially, Sibelium works by blocking calcium channels, which in turn regulates the flow of calcium ions. This regulation leads to the stabilization of cell membranes in the smooth muscle cells found in blood vessels. Pharmacokinetics; Absorption; Sibelius is quickly absorbed from the tract. Distribution: It is evenly distributed throughout parts of the body. Metabolism: The liver is primarily responsible for metabolizing Sibelium. Excretion; The main elimination route for Sibelium is through the pathways.

Approved Uses of Sibelium

Sibelius is a brand name for flunarizine, a calcium channel blocker that has anti-migraine and anti-vertigo effects. It is used to prevent migraine attacks and treat balance disorders caused by problems in the inner ear or brain. It works by improving the blood flow in the brain and reducing the abnormal activity of muscles that trigger migraines.


Off-Label Uses of Sibelium

Sibelius is not approved for treating anxiety, sleep disorders, or Meniere’s disease, but some studies have suggested that it may have some benefits for these conditions. However, the evidence is not conclusive and more research is needed.


Dosage and Administration Guidelines

Typical Dosage for Adults; The usual dose for adults is 10mg taken once a day. Dosage Adjustments for Groups; Elderly; It is generally recommended to reduce the dosage for older individuals. Children; Unless specifically prescribed by a healthcare professional, it is not recommended for children to use this medication. Different Forms Available; This medication is mainly found in tablet form although there may be versions as well.

Side Effects: What to Expect

Experienced Effects: Increase in body weight, feeling drowsy, and experiencing gastrointestinal problems. Serious Effects: If you notice symptoms like jaundice or severe allergic reactions, it is crucial to seek medical assistance. Potential Long-Term Risks: Prolonged use may have the potential to cause liver damage or result in dependence.

Interactions to be Cautious of

Interactions with Medications: There may be an increased effect when used together with other calcium channel blockers or beta blockers. Interactions with Food: Consumption of grapefruit juice can affect how the drug is broken down in the body, making it more robust and increasing the possibility of experiencing side effects. Alcohol Interaction: If Sibelium is taken with alcohol, it can enhance its properties, leading to higher levels of drowsiness and impaired motor skills.

Warnings and Contraindications

Medical Conditions: Individuals with preexisting conditions such as severe depression or hepatic impairment should avoid taking Sibelium. It is strongly recommended to discuss with healthcare professionals to disclose any current or past medical conditions. Allergic Reactions: Immediate discontinuation of Sibelium is necessary if an individual experiences reactions to flunarizine or other medication components. Look for symptoms like hives, facial swelling, and difficulties in breathing. Drugs to Avoid: Avoid taking calcium channel blockers, antipsychotic medications, and certain antibiotics like erythromycin along, with Sibelium. The simultaneous use of these medications can lead to drug interactions.

Special Considerations for Administration

Careful Administration

To ensure the safety and effectiveness of Sibelius, it is essential to monitor liver function tests and blood pressure and conduct psychiatric assessments for individuals on this medication. Before starting the treatment, it is recommended to establish baseline liver function tests and hemodynamic parameters. Additionally, ongoing evaluations should be conducted during long-term therapy.

Important Precautions

General Safety Measures: avoid consuming alcohol and operating machinery as it can cause drowsiness and impaired cognitive function. Precautions for Different Groups; Individuals: Dose adjustment may be necessary due to changes in how the body processes the medication. Pregnant and Breastfeeding Women; It is crucial to consult healthcare professionals for guidance and advice.

Administration to Specific Groups

Elderly Population

When it comes to adjusting the dosage and taking precautions, it is usually recommended to use doses. This helps prevent any side effects such as postural hypotension or sedation, from becoming worse.

Pregnant Women and Nursing Mothers

Risks and Suggestions: Studies conducted on animals have provided outcomes regarding teratogenic effects. It is recommended that the medication be given only if the potential advantages outweigh any risks to the unborn baby or young child.

Administration to Children

Dosage for children; It is not commonly recommended to use this medication in the population, and healthcare providers should thoroughly evaluate its use.

Overdosage: Emergency Measures

Symptoms of taking much medication: The effects can range from a significant drop in blood pressure to sudden liver failure. It is crucial to seek medical advice. What to do away: If the excessive intake happened recently, it might be helpful to wash the stomach or take activated charcoal promptly.

Storage and Handling Precautions

To ensure the drug remains effective for a period, storing it at a consistent temperature between 15 and 30°C and protecting it from direct exposure to light is essential. The typical shelf life of the drug can range from 24 to 36 months, depending on how it is stored according to the guidelines. When disposing of any expired medication, it is essential to follow pharmaceutical disposal protocols to minimize any potential environmental impact.

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