Antivom

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Antivom

Quick Facts

Property Description
Active ingredient Betahistine (as dihydrochloride salt)
Form Tablets, Oral Solution (Drops), Orally Dispersible Tablets
Pharmacological class Antivertigo Agent (N07CA01)
General purpose Symptomatic relief of dizziness and vertigo
Origin Synthetic Histamine Analogue

Antivom: Defining the Antivertigo Agent and Its Status

Antivom is a medicinal preparation whose core active component is Betahistine, and it is formally classified as an antivertigo agent (WHO ATC code N07CA01). This prescription-only medicine is a synthetic histamine analogue, structurally related to the body's natural histamine molecule. It is utilized as a drug for vestibular disorders, and the fundamental purpose of this medicine is to provide symptomatic treatment to help stabilize balance disorders and alleviate the feeling of spinning (vertigo) and intense dizziness.

Composition, Forms, and Differentiation

The core of Antivom is the single active ingredient product, Betahistine, most often used as its salt, Betahistine dihydrochloride. As a synthetic compound, its structure is derived from aminoalkylpyridine, acting on specific histamine receptors. The medicine is consistently manufactured for the oral route of administration and is supplied in varied dosage forms, including standard Tablets and liquid Oral Solution (Drops). While Betahistine is available under various trade names, Antivom specifically refers to the preparation manufactured by Uni-Pharma SA. Notably, the availability of an Oral Solution caters to patients who may find swallowing solid forms challenging, a feature that expands the medicine's utility.

What side effects are possible with Antivom?

Possible Side Effects and Safety Information

The safety profile of Antivom (Betahistine) is documented in official regulatory sources, which classify adverse reactions based on their frequency and the physiological system affected. Adverse effects are grouped by System-Organ-Class (SOC).

Frequency Category Representative Adverse Reactions
Common (affecting ge 1/100 people) Headache, Nausea, Dyspepsia
Rare (affecting ge 1/10,000 to <1/1,000 people) Vomiting, Gastrointestinal pain, Palpitations, Tiredness

Adverse reactions classified as Not Known (frequency cannot be estimated from available data) include severe hypersensitivity reactions like Anaphylaxis and Angioneurotic oedema (Angioedema), as well as cutaneous reactions such as rash and urticaria. Mild gastrointestinal complaints, such as abdominal pain, have been observed and may be mitigated by taking the dose during meals.

Regulatory documents highlight specific safety restrictions. Phaeochromocytoma and known Hypersensitivity to Betahistine are designated as contraindications. Caution is officially advised for patients with a history of peptic ulcer or bronchial asthma. Use in the pediatric population is not recommended due to a lack of complete safety and efficacy data, and use in pregnant or nursing women should be weighed carefully, as the potential risk remains unknown.

Overdose and Emergency Response

Overdose and When to Seek Help

Suspected overdose with Antivom (Betahistine) requires immediate medical attention. Official regulatory labeling documents the clinical presentation of overdose, which can vary depending on the amount taken. The information provided reflects the necessary actions and documented effects derived from government-authorized prescribing information.

Manifestations Description
Mild to Moderate Common signs reported at lower overdose levels include nausea, vomiting, abdominal pain (gastralgia), somnolence (sleepiness), and ataxia (lack of coordination).
Severe Serious complications, including seizures (convulsions), serious cardiac effects, and pulmonary complications, have been documented. These are typically associated with very high doses or when the medicine was taken in combination with other substances.

Emergency Action and Supportive Management

In the event of a suspected overdose, regulatory guidance strictly mandates that individuals seek immediate medical attention. Users must talk to a doctor or go to a hospital immediately and contact a local poison control center. No specific antidote is known for Betahistine overdose. Therefore, management is limited to symptomatic treatment and general supportive measures. Authorities note that gastric decontamination procedures, such as lavage, may be considered, particularly if initiated soon after ingestion. The potential for severe outcomes necessitates urgent professional clinical management and observation.

Therapeutic Uses of Antivom

The active substance in Antivom is betahistine, which is used for symptoms related to balance and inner ear disorders.

Antivom is commonly used to help with the management of Ménière's syndrome. This chronic inner ear condition presents with symptoms related to physical discomfort, which Antivom may assist with managing, including vertigo, tinnitus, hearing loss, and nausea and vomiting.

The medication is commonly used to help with managing conditions involving episodic or fluctuating manifestations. It is often used during phases when symptoms become more noticeable, and it contributes to improved comfort during symptomatic periods. It also assists with maintaining functional stability when symptoms are more noticeable.

“It is often used during phases when symptoms become more noticeable, particularly during phases of heightened physical discomfort.”

Quick Fact: Supports Management of Episodic Dizziness

Regulatory References

  1. European Commission's Union Register of medicinal products

Eligibility and Restrictions for Use

Official Eligibility and Non-Eligibility for Antivom

Regulatory documents define specific populations who can and cannot use Antivom (betahistine).


Contraindicated Populations (Must Not Use)

Classification Population/Condition
Absolute Prohibition Patients with Phaeochromocytoma (adrenal gland tumor)
Absolute Prohibition Patients with active Peptic Ulcer or a history of this condition
Absolute Prohibition Patients with known hypersensitivity to betahistine or its excipients

Age-Related Eligibility

Age Group Regulatory Status
Children & Adolescents (< 18) Not recommended due to insufficient data on safety and efficacy
Older Adults (> 65) Generally no dose adjustment is necessary based on post-marketing experience

Restricted or Conditional Use

Use requires caution and monitoring in patients with Bronchial Asthma or a history of peptic ulceration, and those with severe Hypotension. For Pregnancy and Lactation, use is generally not recommended; safety is unestablished, and use should only occur if clearly necessary. Regarding organ function, while no dose adjustment is typically required for patients with renal or hepatic impairment, specific clinical trials for these groups are not available.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The regulatory profile for Antivom (Betahistine) documents interactions primarily involving agents that affect its metabolic pathways or share its pharmacological target. Co-administration of Monoamino-oxidase (MAO) inhibitors, which include selective MAO-B inhibitors such as Selegiline, is expected to increase Betahistine plasma concentrations. This pharmacokinetic interaction occurs because MAO inhibitors interfere with the drug's metabolism. Caution is officially recommended when these medicines are used concomitantly.

Conversely, as Betahistine is a synthetic histamine analogue, the official labeling addresses the theoretical possibility of a mutual attenuation of effect when Antivom is taken alongside antihistamines ( H1 antagonists). Regarding drug-food interactions, regulatory information notes that food intake slows the rate of absorption, reducing the maximum plasma concentration ( C max). Despite this, the total extent of absorption ( AUC) remains comparable. The official profile lists no specific medicine formally labeled as contraindicated due to interaction risk. Furthermore, while there are no specific drug-drug interaction trials for patients with hepatic impairment, post-marketing experience suggests that no dose adjustment is necessary.

Mechanism of Action

Modulating Balance Signals via Central Histamine Receptors

This domain covers Antivom's primary mechanism, which is centered on the Histamine mathbfH3 Receptor ( H3 R) in the brainstem. By acting as an antagonist at these presynaptic receptors, the drug removes the inhibitory control over histaminergic neurons, substantially increasing the release of endogenous neurotransmitters in the vestibular nuclei. This disinhibition facilitates central vestibular compensation, leading to the rebalancing of asymmetrical neuronal activity.


Enhancing Microcirculation in the Inner Ear

The secondary mechanistic domain involves the drug's weak action as a partial agonist at the Histamine mathbfH1 Receptor ( H1 R) found on the vasculature of the inner ear. This interaction results in vasodilation of the local blood vessels, which increases blood flow to the labyrinthine structures. This enhanced microcirculation influences fluid and electrolyte dynamics within the inner ear's sensory apparatus, contributing to local hemodynamic modulation.

Dosage and Administration Information

Official Administration Protocol

Antivom (Betahistine) is exclusively designed for oral administration, utilizing available dosage forms such as tablets (8 mg, 16 mg, 24 mg) and, in some regions, an oral solution. The tablets should be swallowed whole with water. To mitigate potential mild gastric discomfort, the medication is directed to be taken preferably with or after meals.

Labeled Dosing and Frequency

The standard adult usage regimen is defined by a daily dose that must be administered in two or three divided doses. The typical starting dose for adults ranges from 8 mg to 16 mg, taken three times per day. The usual maintenance dose falls within the range of 24 mg to 48 mg daily, with a maximum daily dose of 48 mg which must not be exceeded.

Course Duration and Population-Specific Use

Treatment with Antivom is often considered long-term, as the time required to observe a full response can extend to several months. Specific rules apply to certain patient groups: no dose adjustment is generally considered necessary for older adults or individuals with renal or hepatic impairment. However, the use of Antivom is not recommended for the paediatric population (under 18 years of age) due to a lack of sufficient data regarding safety and efficacy.

Recent Clinical Evidence

Research Evidence for Antivom (Betahistine)

This section provides an overview of the scientific research base for Antivom, focusing on findings from formal clinical evaluations, such as randomized controlled trials (RCTs) and systematic reviews, as reported in authoritative scientific literature. The evidence helps frame the scientific evaluation and documents the study outcomes that were explored, without offering individual predictions or clinical advice.


Evidence for Use in Ménière's Syndrome

Research for Antivom in Ménière's syndrome primarily involves RCTs and subsequent meta-analyses designed to investigate the medicine against a placebo or another active comparator in adult patients. Studies focused on monitoring specific outcomes related to the disease, particularly the frequency and severity of vertigo attacks and changes in associated symptoms like tinnitus. Findings that help contextualize how patients reported their experience have been mixed. Some systematic reviews have described patterns related to changes in vertigo attack frequency; however, other high-quality, long-term RCTs reported that the measured difference in attack frequency between Antivom and placebo was not statistically significant.


Evidence for Other Vestibular Vertigo

Research has also explored the use of Antivom in individuals presenting with general peripheral vertigo that is not related to Ménière's syndrome. These studies typically monitored short-term changes over defined time intervals, examining outcomes such as the severity and duration of dizziness using patient-reported outcomes. Systematic reviews aggregating data for this indication noted that various patient-reported outcomes were described. However, the heterogeneity of the underlying conditions (mixed causes of vertigo) makes it difficult to draw a unified conclusion for all forms of peripheral vertigo.


Research Gaps and Remaining Uncertainties

Scientific reviews highlight areas where the evidence is limited or inconsistent. The inconsistent findings of high-quality randomized controlled trials regarding the primary outcome in Ménière’s syndrome constitute a significant uncertainty. Furthermore, data for sustained durability of measured responses remain insufficient in long-term studies (beyond nine to twelve months). The evidence quality varies across studies, and data for certain subgroups, such as older adults with multiple comorbidities, remain limited.

Key Studies & References

  1. Public Assessment Reports of the Medicines Evaluation Board in the Netherlands (MEB) - Betabare 24 mg tablets (Refers to regulatory stance, indication, and absence of new studies for abridged application)
  2. Independent meta-analysis study into betahistine adds to clinical validation for vertigo | Clinical Trials Arena (Discusses meta-analysis findings on BPPV and DHI measures)

Frequently Asked Questions (FAQ)

Common questions about Antivom (FAQ)

Q: Is Antivom the same kind of drug as Gravol or Dramamine?

Official documents classify Antivom as a synthetic histamine analogue and an antivertigo agent. Its action involves influencing specific receptors in the inner ear and brain. This mechanism is chemically different from many common over-the-counter anti-nausea medications, which are full H1 receptor antagonists (antihistamines).

Q: Why is Antivom sometimes prescribed for people having surgery?

The drug’s official regulatory indications focus on specific balance disorders. However, non-regulatory clinical studies have investigated the use of this substance in the context of post-operative nausea and vomiting (PONV) following certain surgical procedures. This research exists outside of the drug's official label.

Q: How quickly does Antivom usually start to work after taking it?

Official pharmacokinetic information shows that the concentration of the drug's main active metabolite in the blood typically reaches its maximum level about one hour after the medication is taken. This reflects the period when the drug is most concentrated in the systemic circulation.

Q: What is the average duration of action for a single dose of Antivom?

Based on regulatory pharmacokinetic data, the average elimination half-life for the main active metabolite is approximately 3.5 hours. This measurement describes the time it takes for half of the drug to be processed and removed from the bloodstream.

Q: Are there any common foods or drinks that should be avoided when taking Antivom?

Official regulatory information states that taking the medication with food can slow down the rate at which the drug is absorbed into the bloodstream. Specific food or beverage restrictions, such as grapefruit juice, are not listed in the product’s official documents. However, caution is generally advised regarding herbal remedies and supplements because they are often not tested for interactions with prescription medicines.

Q: Does Antivom cause drowsiness or fatigue?

According to official safety information, Tiredness is listed as a rare adverse reaction. While drowsiness is not listed as common, official documents advise that caution is necessary when driving or operating machinery, which is a standard warning for medicines that may affect the central nervous system.

Q: What happens if I miss a scheduled dose of Antivom?

Patient guidance leaflets often address the process for a forgotten dose. These documents advise that if a dose is missed, it can be taken as soon as the individual remembers, and the normal schedule should be resumed. Such leaflets indicate that a person should not take two doses at once to compensate for the missed one.

Q: Are there known interactions between Antivom and vitamins or supplements?

Official health guidance indicates that there is generally not enough information available to confirm the safety of taking complementary medicines, herbal remedies, and nutritional supplements with this drug. This is because these products are typically not included in the formal testing for drug interactions.

Q: Does Antivom interact with alcohol?

Patient information provided by regulatory bodies advises that consuming alcohol may increase the potential for drowsiness or fatigue. Official guidance notes that patients are often advised to limit alcoholic beverages until they know how the medication affects them.

Q: Has Antivom been studied in pediatric populations?

Official regulatory documents state that the use of this drug is not recommended for children and adolescents under the age of 18. This recommendation is based on a regulatory assessment concluding that there is currently a lack of sufficient data on safety and efficacy for this specific population.

Q: Is there a maximum amount of time a person should generally take Antivom?

Regulatory documents often describe the treatment as being 'long-term,' as a full response may take several months to be observed. Scientific reviews indicate that data on the long-term benefit and durability of responses is limited in studies extending past nine to twelve months.

Q: What is the difference between Antivom and other anti-nausea medications?

Antivom is formally classified as an antivertigo agent, meaning its primary purpose is symptomatic relief for balance disorders and dizziness. While it may help with associated nausea (a symptom of vertigo), it is not primarily classified as a treatment for nausea and vomiting in the same way as some other medicines.

Q: Is it normal to feel a dry mouth while taking Antivom?

Dry mouth is one of the potential gastrointestinal side effects that may be associated with this medication. This finding is included in some official regulatory and patient information documents.

Q: What is the general safety classification of Antivom?

Official regulatory status across major jurisdictions classifies Antivom as a prescription-only medicine. Its safety profile is detailed in official documentation, categorizing adverse reactions by frequency and listing absolute contraindications (conditions where the drug must not be used).

Q: Is there a generic version of Antivom available?

Official regulatory reports confirm that the active ingredient, Betahistine dihydrochloride, is an established and widely available substance. Due to this, the medication is available under the trade name Antivom as well as various different generic trade names globally.

Q: Why do some people experience dizziness from Antivom?

Dizziness is typically the symptom the drug is intended to treat, and it is not generally listed as a common or rare side effect at prescribed doses. However, official information notes that severe dizziness may be a potential sign of a serious allergic reaction or a symptom associated with an accidental overdose.

Q: Does Antivom need to be taken at the exact same time every day?

Regulatory documents specify that the total daily dose is to be taken in two or three divided doses throughout the day. The official regimen emphasizes the administration of the total daily dose rather than requiring the doses to be taken at the exact same minute or hour each day.

Q: What is the standard medical reason for a doctor to prescribe Antivom instead of an alternative?

Official regulatory documents indicate that the drug is indicated for the symptomatic treatment of a specific combination of symptoms known as Ménière's syndrome, and for general vestibular vertigo. It is formally classified as an antivertigo agent.

Q: Does Antivom affect one's ability to drive or operate machinery?

Official regulatory warnings note that caution is advised when performing tasks that require full alertness, such as driving or operating heavy machinery. This is advised because some individuals may experience side effects like tiredness or drowsiness.

Q: Can I take Antivom if I am already taking medication for high blood pressure?

Official regulatory documents advise caution for patients who have or have a history of severe hypotension (low blood pressure). There are no specific warnings listed for interactions with common classes of anti-hypertensive drugs.

Q: What is the legal status of Antivom in other countries like Canada or the UK?

Across international jurisdictions, including the United Kingdom and Canada, official regulatory designations confirm the drug is classified as a prescription-only medicine.

Q: Can taking Antivom cause changes in appetite?

Appetite changes are not listed as an adverse reaction in the commonly reviewed official regulatory documents. However, non-regulatory clinical research has been conducted to investigate the drug's potential effect on appetite and weight, based on its mechanism of action.

Q: What types of nausea is Antivom officially indicated to treat?

The drug is officially indicated for symptomatic treatment of Ménière's syndrome. Official documents confirm that the symptoms of Ménière's syndrome often include vertigo that is associated with secondary symptoms like nausea and/or vomiting.

Q: Are there any specific warnings for people with heart conditions who use Antivom?

Official safety documents advise caution for patients with severe hypotension (low blood pressure). Additionally, palpitations (a rare adverse reaction) are noted in the safety profile.

Q: What evidence exists about the use of Antivom for chronic conditions?

Scientific evidence, as summarized in regulatory reviews, primarily examines the drug's use in Ménière’s syndrome, which is a chronic condition. These reviews highlight that findings have been inconsistent and data on sustained benefits beyond nine to twelve months remain limited.

Q: What are the key safety warnings listed on the FDA label for Antivom?

The key warnings and contraindications (conditions where the drug must not be used) are consistent across major international regulatory documents. These include absolute prohibitions against use in patients with Phaeochromocytoma or known Hypersensitivity, as well as caution for patients with Bronchial Asthma or a history of peptic ulcer.

Q: Are there any specific instructions about discontinuing Antivom after long-term use?

Official information does not associate the drug with a risk of physical dependence or withdrawal effects. Therefore, the necessity for a gradual discontinuation (tapering) often associated with dependence-risk drugs is generally not required.

Q: What is the general mechanism of action for Antivom, in simple terms?

Official information suggests the drug may work in two ways to influence the body’s balance system. It is thought to increase blood flow to the inner ear and to help modulate, or rebalance, signals in the brain that process sensory information.

How should Antivom be stored and disposed of?

How to Store and Dispose of Betahistine (Antivom)

Betahistine preparations must be stored under controlled conditions to maintain stability, primarily at or below 25 C. The product must be kept out of the sight and reach of children and stored in its original outer carton to protect it from light and moisture. It is mandatory not to refrigerate or freeze this medicine.

Handling and Disposal

For the oral solution, stability is limited; any remaining medicine must be discarded 2 months after opening. Regulatory guidelines strictly prohibit disposing of unused or expired Betahistine in household waste or via wastewater. Disposal must be performed through official channels by returning the product to a pharmacist or a pharmaceutical take-back program.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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