Buclizine is prescribed for managing nausea, vomiting, and dizziness linked to motion sickness or vertigo.




Adon Pharmaceuticals


25 mg



I. Introduction

A. Definition and Classification of Buclizine

Buclizine belongs to the generation of antihistamines and is classified as a piperazine derivative. Its primary role is to counteract H1 receptors, which allows it to act as an anticholinergic agent. This distinct interaction with the system makes it widely used in medicine, particularly for alleviating symptoms of nausea and dizziness.

B. Historical Background and Development

Buclizine was first discovered in the mid-20th century during an investigation into antihistamines that could effectively alleviate nausea. Researchers found it to be a compound with various benefits, including targeting specific receptors in the central nervous system reducing disturbances in the vestibular system, and managing peripheral symptoms of allergic reactions. Since its discovery, Buclizine has gained acceptance in clinical settings, and its potential applications continue to be explored and documented extensively.

C. Scope of the Article

This article explores the facets of Buclizine offering a thorough understanding of this pharmaceutical substance. It covers its definition, historical evolution, approved medical uses, off-label applications, and its use, in medicine. The aim is to provide healthcare professionals, researchers, and readers with an understanding of this critical medicinal compound.

II. Uses of Buclizine

A. Approved Medical Uses

Treatment for Nausea and Vomiting

Buclizine is known for effectively reducing feelings of nausea and vomiting. It works by blocking receptors in the vestibular system, which helps alleviate the triggers responsible for these symptoms. It is frequently used in recovery, chemotherapy, and even for motion sickness. Its effectiveness in these areas is widely acknowledged.


Management of Motion Sickness

B. Off-Label Uses

Appetite Stimulation

Buclizine, despite being used as an antihistamine, has been found to have additional benefits in stimulating appetite. It has shown the ability to trigger feelings of hunger, making it a valuable tool in the treatment of conditions such as anorexia or cachexia. While researchers are still studying the mechanism behind this effect and its usefulness, this area is gaining recognition.



1‘Despite ban, motion sickness medicine buclizine being sold as appetite stimulant’ | The Indian Express

2Government prohibits distribution, sale of Buclizine as ‘appetite stimulant’ | ET HealthWorld

3Buclizine: View Uses, Side Effects and Medicines | 1mg

4PROPAN, Buclizine HCI Multivitamins Mineral 120ml [PRESCRIPTION REQUIRED] | Watsons Philippines

5Buclizine: Uses, Interactions, Mechanism of Action | DrugBank Online

Migraine Control

While Buclizine was not initially intended for this purpose, its impact on specific neurotransmitter pathways has prompted researchers to explore its potential use in managing migraines. Several studies have indicated that it may have benefits in reducing the frequency and severity of migraines. This off-label application expands our knowledge and possibilities regarding the effectiveness of this medication.


1Buclizine - Watsons Health Hub

2Migraleve (paracetamol, codeine and buclizine) - NetDoctor

3Buclizine - Wikipedia

4Buclizine: Uses, Interactions, Mechanism of Action | DrugBank Online

C. Veterinary Applications

Buclizine is a drug that is used to treat motion sickness and itchiness of the skin in humans. It is a piperazine antihistamine with antimuscarinic and moderate sedative properties. It is utilized chiefly for its anti-vomiting activity and in the treatment of migraine along with analgesics1Buclizine is not approved for veterinary use in most countries, but it may be prescribed by veterinarians as an extra-label drug for animals, such as dogs and cats, to manage motion sickness and other conditions that cause nausea during travel2. The dosage and administration guidelines differ depending on the species, weight, age, and health status of the animal. Veterinary professionals should carefully consider the benefits and risks of using buclizine in animals, as well as the legal and ethical implications of extra-label drug use3.

Here are the references:

1Buclizine: Uses, Interactions, Mechanism of Action | DrugBank Online

2Aptiquik Syrup – The Veterinary Medicine

3Guidelines for the Use of Antibiotic Drugs - MSD Veterinary Manual


III. How Buclizine Works

A. Mechanism of Action

Buclizine, a type of antihistamine called piperazine, works in a way to achieve its effects. It blocks histamine H1 receptors, which leads to antiemetic (anti-nausea) results. By blocking these receptors, it diminishes the influence of histamine on the body. It also helps alleviate balance issues in the ear and reduces feelings of nausea and motion sickness. Additionally, its anticholinergic properties help reduce nerve signals that cause vomiting and sensations of nausea.

B. Pharmacodynamics and Pharmacokinetics

C. Cellular and Molecular Interactions

Buclizine operates within a system of connections affecting both cells and molecules. When it binds to H1 receptors it achieves effects; it reduces the permeability of blood vessels eases contractions in smooth muscles and lessens the flow of blood in capillaries. These combined interactions effectively alleviate symptoms like nausea, vomiting, and dizziness, highlighting the efficacy of Buclizine.

IV. Dosage and Administration

A. Standard Dosage Guidelines

The recommended dosages of Buclizine depend on the conditions being addressed. Generally, for motion sickness a daily dosage of 25 50 mg is advised. In cases where nausea and vomiting need to be controlled, 25 mg may be taken as required. It's important to note that these guidelines can vary depending on reactions and the judgment of medical experts.

B. Dosage Adjustments

Dosage adjustments for Buclizine might be needed in cases where individuals have liver or kidney impairments or other specific conditions. It is essential to monitor and assess the situation to ensure that the treatment is effective without causing any adverse effects.

C. Route of Administration

Buclizine is primarily given by mouth, either as tablets or syrup. Its convenient administration method makes it appropriate for patients receiving treatment outside of a hospital setting—those who are hospitalized. Healthcare providers typically provide instructions related to meals or other relevant factors.

D. Special Considerations for Various Age Groups and Health Conditions

Certain groups, like individuals, children, or those with specific health issues, require special attention. This includes adjusting the dosage for children and the elderly keeping an eye out for side effects in people with heart conditions and creating personalized dosing schedules to account for changes in metabolism or elimination rates. These considerations highlight the significance of tailoring Buclizine's administration to each person's needs.

V. Composition

A. Active Ingredients

The main component of Buclizine is Buclizine hydrochloride, which's responsible for its therapeutic benefits. This compound is carefully formulated to guarantee safety, effectiveness and stability.

B. Inactive Ingredients

The nonactive components found in Buclizine preparations can consist of substances that help improve the medication's characteristics promote consistency and stability, and enhance its taste and appearance. The exact composition of these ingredients may differ depending on the brand and formulation used.

C. Available Forms and Concentrations

Buclizine is offered in forms and strengths to meet the varying requirements of patients. These options encompass tablets, available in 25 mg or 50 mg concentrations, syrup formulations explicitly designed for pediatric use, and compound preparations that combine Buclizine with other active ingredients for specific purposes. The availability of these forms increases the flexibility and usefulness of Buclizine in medical practice.

VI. Storage

A. Optimal Storage Conditions

To maintain the effectiveness and stability of Buclizine, it is crucial to store it under conditions. These conditions involve; Temperature; Typically, it should be stored at room temperature, which ranges between 15 to 30°C. Humidity; It is recommended to protect it from moisture to avoid degradation. Light; Storing it in a place or its original container can help prevent any potential damage caused by light exposure. By following these guidelines, you can ensure that the medication remains therapeutically effective.

B. Shelf Life

Like medications, Buclizine has a specific period of effectiveness, usually lasting 2 to 3 years from the manufacturing date. After this time, the drug may lose its potency. It should be appropriately discarded. The precise expiration date is typically mentioned on the packaging. It must be strictly followed.

C. Handling Precautions

To safely handle Buclizine it is essential to take precautions. Make sure to keep the medication out of reach of children and avoid any contact with your eyes or open wounds. Only use the medication as instructed by healthcare professionals. These precautions are crucial, for ensuring safety and preventing any misuse.

VII. Interaction with Other Substances

A. Drug Interactions

The effectiveness of Buclizine may be. Lead to adverse effects due to its interaction with other medications. Some examples of known interactions include; drugs; These can potentially increase side effects such as dry mouth or urinary retention. Alcohol and CNS depressants; Using these substances with Buclizine may intensify the soothing effects. MAO inhibitors; It is important to note that the use of MAO inhibitors alongside Buclizine could potentially impact its metabolism, necessitating adjustments in dosage. To ensure safety and efficacy, managing and communicating these interactions with healthcare providers is crucial.

B. Food and Alcohol Interactions

While it is generally acceptable to take Buclizine with or, without food, there are a few considerations regarding its interactions; Avoid consuming alcohol while taking this medication as it can increase drowsiness. Additionally, high-fat meals may slightly affect the absorption of Buclizine although the impact is usually minimal. It is advisable to follow guidance to manage these interactions related to food effectively.

C. Effect on Laboratory Tests

Buclizine could potentially impact laboratory tests, such as; It may interfere with skin allergy tests because of its antihistamine properties. There's a chance it could alter the results of liver function tests. It is essential to inform the laboratory staff and healthcare providers about your usage of Buclizine to obtain test results.

VIII. Warnings and Contraindications

A. General Warnings

Some important things to be aware of when using Buclizine are; It might cause drowsiness. It's best to avoid driving or operating heavy machinery while taking it. Elderly patients may be at a risk of experiencing side effects. Hypersensitive people may have potential allergic reactions. Paying attention to these warnings and following them carefully for use is crucial.

B. Specific Contraindications

Buclizine should not be used in situations including; Patients with severe urinary retention. Individuals with angle closure glaucoma. Patients who are known to have a hypersensitivity to Buclizine. It is crucial to assess these contraindications to prevent any adverse effects.

C. Careful Administration and Monitoring

Administering Buclizine requires monitoring, especially in individuals with chronic respiratory conditions, prostatic hyperplasia, or cardiac ailments. It is essential to administer the medication to maximize its therapeutic benefits while minimizing any potential risks.

D. Important Precautions

It's essential to take precautions when using Buclizine. Consult with your healthcare provider if you're pregnant or breastfeeding. Also, be aware that the dosage may need to be adjusted if you have liver or kidney problems. It's crucial to monitor yourself for any side effects. Promptly report any unusual symptoms. These precautions are in place to ensure the effective use of Buclizine for different groups of patients.

IX. Special Administration Guidelines

A. Administration to the Elderly

Elderly individuals might pose difficulties when it comes to administering Buclizine. Because their pharmacodynamics and pharmacokinetics may be different, a few things need to be taken into account; It's advisable to start with a dosage to minimize the risk of experiencing side effects like dizziness and confusion. Regular monitoring of renal and hepatic functions is essential since these functions may not be functioning optimally in older adults. Being vigilant about drug interactions due to multiple medications is crucial. When dealing with the population, careful dosage adjustment and relying on clinical expertise are essential.

B. Administration to Pregnant Women and Nursing Mothers

When giving Buclizine to women and nursing mothers, it's crucial to take a careful approach. Regarding pregnancy, although there are studies in humans animal studies haven't shown any harmful effects on fetal development. However, doctors need to evaluate the potential benefits versus the risks involved. As for nursing mothers, we don't have information, on whether Buclizine is passed into human breast milk. Therefore caution is. Consulting healthcare providers is necessary. In both cases, it's essential to consider an approach based on assessing the risks and the specific clinical needs of each person.

C. Administration to Children

When giving Buclizine to children there are things to keep in mind; Make sure to use the right dosage according to their weight and age. Keep an eye out for any changes in behavior or hyperactivity. If there are formulations available it's preferable to use those. It's essential to follow the guidelines, for administering Buclizine to children in order to ensure safety and effectiveness.

X. Side Effects of Buclizine

A. Common Side Effects

Buclizine can cause some side effects, including; 1. Feeling tired; This is usually temporary. It may lessen over time as you continue taking the medication. 2. Mouth; You can manage this by practicing good oral hygiene and staying hydrated. These side effects are typically manageable. Do not usually require you to stop taking the medication.

B. Rare and Severe Side Effects

Some uncommon and severe adverse effects of Buclizine might include; allergic responses, difficulty in urination, and irregular heartbeats. If you experience any of these symptoms it is crucial to seek medical assistance and consider stopping the use of the medication.

C. Managing Side Effects

To effectively handle the side effects of Buclizine, it is essential to monitor and report any adverse reactions. Adjusting the dosage should always be done under supervision. Additionally, providing care, such as ensuring proper hydration can help alleviate symptoms like dry mouth. Taking an approach, to managing these side effects not only improves patient compliance but also enhances the overall therapeutic outcomes.

XI. Overdosage

A. Signs and Symptoms

An excessive amount of Buclizine can result in the following symptoms; drowsiness or loss of consciousness, difficulty breathing, and experiencing convulsions or seizures. It is crucial to identify these signs to take immediate action.

B. Emergency Treatment and Management

Managing an overdose of Buclizine necessitates medical attention. It may involve Providing supportive care to ensure proper airway and breathing, administering activated charcoal if the ingestion occurred recently, closely monitoring vital signs, and providing necessary symptomatic treatment. In emergencies, a comprehensive and adaptable approach is required.

C. Prevention and Education

To prevent overdosing on Buclizine, educating patients and caregivers about the significance of following the dosage is crucial. Additionally, storing the medication out of reach of children and maintaining regular follow-up appointments with healthcare providers is crucial. Employing a preventive approach plays a vital role in avoiding situations where overdosing may occur.

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