Vastigo

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Medically reviewed

Marina Burgos

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 Vastigo

Property Description
Active ingredient Betahistine Dihydrochloride
Form Oral tablets
Pharmacological class Antivertigo agent, Histamine analogue
Common use Relief of vertigo and unsteadiness
Origin Synthetic small molecule

Vastigo is a common trade name for the prescription medicine containing the International Nonproprietary Name (INN) substance Betahistine Dihydrochloride. This medication is classified as an antivertigo agent, belonging to a specific pharmacological class used to address symptoms related to inner ear disorders. It is a synthetic small molecule and a structural analogue of histamine, a compound involved in balance and nervous system function. This agent is clinically recognized for its role in supporting vestibular health in adults.

Composition and Origin: The Histamine Analogue

The active ingredient in Vastigo is consistently Betahistine Dihydrochloride, which is a single-ingredient compound produced via chemical synthesis, not extraction from natural sources. Vastigo is typically manufactured for oral administration and presented as an oral tablet. This formulation is designed for routine use. The compound acts by influencing the histamine receptors in the brain and inner ear, which is central to its therapeutic function by modulating neuronal activity and blood flow.

General Purpose: Targeted Relief for Balance Issues

The overarching general purpose of Betahistine is to serve as a vestibular modulator, promoting stability and mitigating the symptoms of severe dizziness and vertigo. Its mechanism is understood to promote blood flow in the inner ear and enhance the brain's capacity to process balance signals effectively. It is commonly used when a patient experiences chronic feelings of unsteadiness or rotational dizziness, providing targeted support for the vestibular system.

Regulatory References

  1. Betahistine Summary of Product Characteristics (SmPC) (UK)

What side effects are possible with Vastigo?

Official Adverse Reactions and Safety Characteristics

The official regulatory documentation for Vastigo (Betahistine Dihydrochloride) details adverse reactions classified by frequency and impact on physiological systems. The most frequently documented adverse reactions are categorized as Common, meaning they are expected to occur in approximately 1% to 10% of patients based on clinical trial data. These common effects include Nausea, Dyspepsia, and Headache.

Other reactions, identified primarily through extensive post-marketing surveillance, are classified as Not Known frequency. These events span the Gastrointestinal disorders (e.g., vomiting, abdominal distension), Skin and subcutaneous tissue disorders (e.g., urticaria, pruritus, rash), and Immune system disorders.

Serious adverse reactions documented in regulatory sources are related to Hypersensitivity, including severe reactions such as anaphylaxis and angioneurotic oedema. Caution is formally advised for patients with certain pre-existing conditions, specifically those with a history of peptic ulcers or bronchial asthma, who should be carefully monitored.

Regarding safety restrictions, the medicine is contraindicated in individuals with Phaeochromocytoma or known hypersensitivity to the active substance. Furthermore, official labels advise that use is not recommended for children and adolescents due to insufficient data, and should be avoided during pregnancy and breast-feeding due to lack of comprehensive safety information.

Overdose and Emergency Response

Overdose and When to Seek Help

This section outlines the officially documented overdose manifestations of Vastigo (Betahistine Dihydrochloride) and the actions required by regulatory authorities for seeking medical assistance.

Documented Overdose Manifestations

Overdose presentations reported in regulatory documents vary based on the estimated dose ingested.

Severity Documented Clinical Manifestations
Mild to Moderate Nausea, somnolence (drowsiness), abdominal pain, dyspepsia (indigestion), vomiting, and ataxia (loss of coordination), typically associated with doses up to 640 mg.
Serious Complications Convulsions (seizures) have been reported with very high doses. Severe outcomes, including pulmonary and cardiac complications, have been observed in cases of intentional overdose, particularly when combined with other medicines.

Required Emergency Actions

The official labeling mandates immediate and supportive care in the event of an overdose:

  • Seek Immediate Help: If too many tablets are taken accidentally, the patient must tell a doctor or go to the nearest hospital casualty department immediately.
  • Antidote Status: No specific antidote is known or listed for Betahistine Dihydrochloride overdose in the official prescribing information.
  • Management: Treatment is symptomatic and supportive. Specific measures recommended within one hour after ingestion include general standard supportive measures, gastric lavage, and symptomatic treatment.

Therapeutic Uses of Vastigo

Main Uses and Benefits of Vastigo

Vastigo is a medication primarily prescribed for the management of vestibular disorders and specific symptoms related to inner ear imbalances. Its active component works by improving blood flow in the inner ear and modulating the activity of the vestibular nerve, which is responsible for maintaining balance and spatial orientation.

Treatment of Meniere's Disease

The primary clinical application of Vastigo is the management of Meniere's disease. This condition is characterized by a triad of core symptoms that the medication aims to alleviate:

  • Vertigo: Vastigo helps reduce the frequency and severity of episodes of spinning sensations or dizziness.
  • Tinnitus: It is used to manage the perception of ringing, buzzing, or other noises in the ear.
  • Hearing Loss: The medication may help stabilize or prevent the progression of fluctuant hearing impairment associated with the disease.

Management of Vestibular Vertigo

Beyond Meniere's disease, Vastigo is utilized for the symptomatic treatment of various forms of vestibular vertigo. These are conditions where a dysfunction in the peripheral vestibular system leads to a false sense of movement. By addressing the underlying pressure and circulation issues within the labyrinth of the ear, the medication helps patients regain a sense of equilibrium.

Clinical Benefits

The benefits of treatment with Vastigo focus on enhancing the patient's quality of life by minimizing the impact of balance-related symptoms. The key therapeutic goals include:

  • Reduction of symptom intensity: Decreasing the physical discomfort associated with sudden dizzy spells.
  • Prevention of attacks: Lowering the recurrence rate of acute symptomatic episodes.
  • Improved daily functioning: By stabilizing balance, the medication supports the ability to perform routine activities that might otherwise be hindered by disorientation or nausea.

Eligibility and Restrictions for Use

The eligibility for using Vastigo (Betahistine Dihydrochloride) is strictly determined by regulatory guidelines, outlining which populations are formally permitted or restricted from treatment. The use of Vastigo is primarily established for adult patients aged 18 years and older.

Contraindications and Prohibited Use

The medicine is contraindicated and must not be used by patients diagnosed with Phaeochromocytoma or those who have known hypersensitivity to the active ingredient or any excipients.

Population Restrictions

Use is not recommended for specific population groups due to insufficient data on safety and efficacy. This includes children and adolescents under 18 years.

Regarding reproductive status, the medicine is not recommended during pregnancy or for women who are breastfeeding as its status is not fully established in these populations by regulatory authorities.

Conditional Use and Caution

Regulatory caution and careful monitoring are advised for patients with certain pre-existing conditions, including Bronchial Asthma or a history of Peptic Ulcer. Additionally, special consideration is required for patients with hepatic impairment or renal impairment, where use is permitted only with regulatory caution.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory information for Vastigo (Betahistine Dihydrochloride) defines specific interaction patterns based on pharmacological class and metabolic pathways.


Documented Pharmacological and Metabolic Interactions

Category Interaction Pattern Restriction / Outcome
H1 Antagonists (Antihistamines) Pharmacodynamic interaction Co-administration may result in a mutual attenuation of effect for both substances.
Monoamine Oxidase ( MAO) Inhibitors Metabolic inhibition Documented in vitro to inhibit Betahistine metabolism, potentially increasing Betahistine plasma exposure.

Food and Absorption Kinetics

Food intake is officially documented to slow the rate of Betahistine absorption, resulting in a lower maximum plasma concentration ( C max). However, the regulatory information indicates that the overall extent of Betahistine absorption remains unchanged. An official case report notes an interaction with ethanol (alcohol). No mandatory timing separation rules are currently documented for this medication, nor are there population-specific cautions regarding the severity of these interactions.

Mechanism of Action

Targeted Receptor and Enzyme Modulation

Vastigo acts on defined biological targets, specifically engaging certain receptor or enzyme systems to initiate or block signaling. This interaction facilitates the rapid adjustment of activity within core systems.


Signal Transduction and Pathway Dampening

The drug operates within well-characterized molecular cascades, where it acts to modulate signaling patterns associated with specific physiological responses. By altering the signaling dynamics in defined neural or humoral pathways, Vastigo reduces signal transduction intensity, thereby limiting the propagation of excessive signaling.


Regulation of Physiological Responses

The mechanism regulates physiological responses across relevant central and/or peripheral contexts. By influencing core feedback mechanisms within these pathways, Vastigo modifies activity in overactive processes, which results in physiological adjustments.

Dosage and Administration Information

How to Use Vastigo

Vastigo (Betahistine Dihydrochloride) is administered exclusively by the oral route as a tablet. The medication is available in multiple dosage strengths, including 8 mg, 16 mg, and 24 mg tablets. The total quantity of medicine used daily is based on the prescribing professional’s assessment.


Standard Adult Administration and Dosing

Administration follows a divided-dose schedule, meaning the total daily amount is separated into two or three doses taken throughout the day. The initial dose range for adults is typically 8 mg to 16 mg per dose, taken three times daily. The usual maintenance dose range is between 24 mg and 48 mg in total per day. It is an administration constraint that the total daily dose should not exceed 48 mg.

Tablets should be taken with or immediately following meals to ensure consistency and minimize potential gastric discomfort. They must be swallowed whole without chewing. While clinical improvement may be observed within a few weeks, the best outcome is often obtained after a few months of continuous treatment, framing its use as part of a long-term plan.


Population-Specific Use

Population Group Official Labeled Instruction
Children and Adolescents (< 18 years) Not recommended due to lack of sufficient data on efficacy and safety.
Older Adults No specific dose adjustment is generally necessary based on post-marketing experience.
Hepatic or Renal Impairment No specific dose adjustment appears necessary based on current post-marketing experience.

If a dose is missed, the guidance is to skip that dose and take the next scheduled dose at the usual time; a double dose should never be taken to compensate.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Vastigo

Evidence for Use in Ménière's Disease

Vastigo (Betahistine Dihydrochloride) was studied for a number of Randomized Controlled Trials (RCTs) and subsequent large Systematic Reviews and Meta-analyses. These studies were used in research exploring how symptoms change over time for adults diagnosed with Ménière's disease, a condition characterized by fluctuating or episodic manifestations. The research examined outcomes related to physical discomfort, specifically tracking the frequency, duration, and severity of acute vertigo attacks, alongside tinnitus and aural fullness.

Early research and some pooled evidence reported changes in the frequency of vertigo episodes over the short-term study period. However, more recent, high-quality, and longer-term trials have provided different findings. Some studies observing responses over defined time intervals showed no statistically significant difference when compared to a placebo for key primary outcomes like vertigo attack frequency. Findings were mixed across the reported studies, especially concerning effects on hearing or tinnitus.

Evidence for Use in General Vestibular Vertigo

Research studies explored the use of Vastigo in conditions associated with acute or disruptive episodes of vertigo arising from various or unspecified vestibular causes. This evidence largely comes from Meta-analyses that have pooled data from multiple Randomized Controlled Trials (RCTs). These studies examined overall outcomes related to systemic or functional imbalance and the accompanying symptoms, such as nausea and vomiting.

The aggregated data describe patterns in symptom measurements compared against control groups in these general, heterogeneous populations. The certainty remains low for the use of Vastigo in this broad, non-specific group of vestibular disorders. This low certainty stems from the high variability among the patients included in the pooled trials and the risk of bias documented in many of the historical studies.

Evidence Quality and Research Gaps

Overall, the research evidence for Vastigo contributes to the broader evidence landscape, but the evidence quality varies across studies. The main research limitations include a lack of consistency in how outcomes are measured, the frequent use of modest sample sizes, and limited information for long-term outcomes. Additionally, the fact that the primary outcomes are often patient-reported outcomes describing perceived discomfort means the findings are difficult to isolate from the spontaneous variability of the underlying condition.

Key Studies & References

  1. Meta-analysis of clinical studies with betahistine in Ménière's disease and vestibular vertigo
  2. Report from a Consensus Conference on the treatment of Ménière's disease with betahistine: rationale, methodology and results

Frequently Asked Questions (FAQ)

Common questions about Vastigo (FAQ)

Q: What is the primary condition Vastigo is approved to treat?

Regulatory documents state that Vastigo is indicated for the treatment of symptoms associated with Meniere’s syndrome. This condition typically involves a combination of vertigo (dizziness), tinnitus (ringing in the ears), and hearing loss.

Q: How is Vastigo described in official sources regarding its intended purpose?

Official documents describe Vastigo as an antivertigo agent. Its regulatory intent is to reduce episodes of recurrent vertigo associated with Meniere’s disease.

Q: Is Vastigo classified as a medication for pain management?

No. Vastigo is not classified for pain management. Its approved use, according to regulatory documents, is specifically for symptoms related to Meniere’s syndrome.

Q: How long does the effect of a typical dose of Vastigo last in the body?

The main substance of Vastigo is rapidly broken down in the body. According to official data on its pharmacokinetics, the primary inactive metabolite is excreted with a half-life of approximately 3.5 hours.

Q: Are changes in sleep patterns, such as insomnia or drowsiness, listed as common side effects of Vastigo?

Official safety information indicates that the potential for side effects such as drowsiness or fatigue has been reported. This may indirectly affect a patient’s sleep patterns.

Q: What are the most frequent side effects that have been reported with Vastigo?

Commonly reported adverse effects documented in official information include headache and mild gastrointestinal issues, such as nausea, vomiting, or stomach pain.

Q: What specific drugs or supplements are officially listed as interacting with Vastigo?

Official product information notes that co-administration with monoamine oxidase (MAO) inhibitors is a contraindication or warning. Additionally, the efficacy of Vastigo may be affected by the concurrent use of certain antihistamines.

Q: Does Vastigo have a known interaction risk with common over-the-counter cold medicines?

Since some over-the-counter cold medicines contain antihistamines, and official documents indicate antihistamines may reduce the effectiveness of Vastigo, this potential interaction is noted in regulatory warnings.

Q: Are there any specific foods or drinks that should be avoided while using Vastigo?

Regulatory patient information states that normal eating and drinking can generally be continued. However, the official product information describes taking the tablets with or immediately after meals as a way to minimize any potential gastric discomfort.

Q: What were the key results or endpoints of the major clinical studies on Vastigo?

Studies examined the drug’s effectiveness in treating symptoms of Meniere’s disease. Key results indicated improvements in the severity and frequency of vertigo attacks experienced by patients.

Q: Why might a doctor prescribe Vastigo instead of another drug for the same condition?

Regulatory patient information notes that the side effect profile of Vastigo often includes a reduced incidence of sedation. This characteristic may be noted by a prescribing professional.

Q: Does Vastigo have any effect on blood pressure or heart rate?

Official safety information lists an increase in heart rate or palpitations as a possible side effect.

Q: Is it considered normal to feel mild stomach discomfort when first starting Vastigo?

Mild gastric complaints, such as abdominal bloating, have been observed in some patients. Regulatory information describes that taking the medication during or immediately following meals may help minimize these symptoms.

Q: What is the known interaction between Vastigo and alcohol?

Regulatory patient information indicates that drinking alcohol is permissible while using Vastigo.

Q: What are the known cardiac effects of Vastigo, according to official data?

The potential cardiac effects that have been reported include an increase in heart rate or the experience of palpitations.

Q: Can Vastigo cause dizziness, lightheadedness, or problems with coordination?

While dizziness is a primary symptom of the condition Vastigo treats, official safety information notes that drowsiness or fatigue has been reported as a side effect. This potential impact on daily activities is noted in product information.

Q: How quickly do most side effects associated with Vastigo typically resolve?

Gastrointestinal symptoms are described in regulatory documents as often subsiding between doses. Taking the medication with food may also help minimize these symptoms. Documented hypersensitivity reactions are generally reported to quickly resolve after the drug is discontinued.

Q: Are there specific patient populations who are explicitly advised against using Vastigo?

Yes, Vastigo is explicitly advised against (contraindicated) for individuals who have a tumor of the adrenal gland (pheochromocytoma) or a history of peptic ulcers.

Q: Is Vastigo authorized for use during pregnancy or while breastfeeding?

The safety of Vastigo in human pregnancy has not been definitively established. Regulatory information describes the need for a professional risk-benefit assessment before use during pregnancy. It is also not known whether the drug is excreted into human milk.

Q: How does Vastigo differ in composition from common vitamins or supplements?

Vastigo is a type of medicine classified as a histamine analogue. This chemical classification means it is distinct in composition and action from common vitamins or dietary supplements.

Q: What research data is available regarding the long-term safety of Vastigo?

The active ingredient in Vastigo is described in official regulatory information as generally having a safety profile that supports long-term use. Minimal serious side effects have been reported with continuous use.

Q: Are there general recommendations for monitoring blood work or other tests while using Vastigo?

While not a universal requirement, official safety documents note that liver problems, including increased liver enzymes, have been reported as an adverse effect. This may be a factor considered by professionals during clinical practice.

Q: Is it documented that Vastigo can cause dry mouth or changes in taste?

Yes, official safety information indicates that dry mouth is listed among the possible digestive-related adverse effects reported for the medicine.

Q: Is Vastigo an antibiotic, a steroid, or another class of medicine?

Vastigo belongs to a specific class of medicines known as histamine analogues.

Q: What are the documented safety concerns regarding high blood pressure and Vastigo use?

Vastigo is explicitly advised against (contraindicated) for patients who have high blood pressure specifically due to a tumor of the adrenal gland, known as pheochromocytoma.

Q: How is Vastigo's potential impact on cognitive function or alertness described?

Clinical studies specifically investigating the ability to drive or operate machinery found that Vastigo had no or negligible effects on cognitive function or alertness.

Q: Do official documents mention the potential for severe allergic reactions to Vastigo?

Yes, the potential for severe allergic reactions (hypersensitivity) is documented. Signs may include difficulty breathing or swelling of the face, tongue, or throat.

Q: Does Vastigo carry a risk of headache based on clinical trial data?

Yes, regulatory documentation lists headache as a nervous system disorder and a frequently reported side effect in clinical trial data.

Q: What is the typical age range of individuals involved in the primary research for Vastigo?

The indication and research for Vastigo focus on adults (18 years and above). Due to a lack of sufficient data on efficacy and safety, the drug is not recommended for pediatric patients.

Q: Is Vastigo suitable for people with a history of stomach ulcers?

No, official product information explicitly states that Vastigo is contraindicated (advised against) in patients who have a history of peptic ulcers.

Q: How long after discontinuing Vastigo does the drug typically remain in the system?

The drug is rapidly converted into an inactive metabolite, which is then readily excreted in the urine. Regulatory data reports the half-life of this metabolite as approximately 3.5 hours.

Q: Does taking Vastigo affect my ability to drive or operate machinery?

Studies show that Vastigo has no or negligible effects on the ability to drive or use machines. However, the official product information notes that if side effects such as drowsiness occur, caution is advised.

How should Vastigo be stored and disposed of?

How to Store and Dispose of Vastigo (Betahistine Dihydrochloride)

Official regulatory documents define specific conditions for storing and disposing of Vastigo tablets to maintain quality and safety. The medicine must be stored at or below 30°C or at controlled room temperature (15°C to 30°C).

Storage Requirements

Condition Requirement
Temperature Below 30°C or controlled room temperature.
Protection Store away from moisture, heat, and direct sunlight.
Packaging Keep the tablets in the original pack to preserve integrity.
Child Safety Must be kept out of the sight and reach of children.

Disposal Instructions

Unused or expired tablets should be managed according to local regulation. Disposal into drains, wastewater, or onto the ground is forbidden. Consult a pharmacy or local authority for official medicine take-back programs.

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

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