Cinz

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Medically reviewed

Laura Arias

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 Cinz

Property Description
Active ingredient Cinnarizine
Form Tablet or Capsule
Pharmacological class First-generation Antihistamine; Calcium Channel Blocker
Common use Anti-vertigo and Anti-emetic agent
Origin Synthetic organic compound

Cinz: A First-Generation Antihistamine and Calcium Channel Blocker

Cinz is a medicine whose active substance is the International Nonproprietary Name (INN) compound Cinnarizine, a synthetic organic compound derived as a piperazine derivative. It is classified pharmacologically as a first-generation antihistamine and functions as a calcium channel blocker. This unique dual classification is clinically recognized for providing therapeutic utility beyond simpler antihistamines.

While Cinnarizine (the generic name) is widely utilized globally, Cinz is one of its established trade names, typically marketed as a simple, single-active ingredient product. Its specific positioning targets symptoms related to the body's vestibular system, a characteristic that distinguishes it from non-sedating allergy medications.

What is Cinnarizine Made Of and What is its Form?

Cinz is designed as a single-active ingredient product, containing only the active substance Cinnarizine alongside necessary solid pharmaceutical excipients. The compound has the molecular formula C26H28N2. The medicine is commonly supplied for oral administration in the specific solid preparations of a tablet or a capsule.

This formulation ensures the active compound is delivered systemically via the simplest route. The specific form, a tablet or capsule, provides a defined dose, ensuring the exact amount of Cinnarizine is consistently delivered for subsequent absorption and systemic action.

General Purpose: What Does Cinz Generally Help Relieve?

The core general purpose of Cinz is defined by its official categorization as an anti-vertigo agent. Cinz generally helps to mitigate the confusing signals and over-sensitivity coming from the vestibular system, the balance organ of the inner ear. By dampening these signals, its overall benefit is the relief of distressing symptoms such as vertigo, generalized dizziness, and the nausea related to travel and chronic vestibular disorders. It acts as an anti-emetic agent by calming the systems responsible for motion-induced discomfort.

What side effects are possible with Cinz?

Possible Side Effects and Safety Information

The safety profile of Cinz is structured by governmental regulatory authorities to provide clear information on documented risks, restrictions, and required monitoring. The most critical safety information is presented in warnings that highlight potentially disabling or irreversible adverse reactions involving multiple body systems.

Serious and Clinically Significant Adverse Reactions

Official labeling requires warnings for serious events that may affect the nervous, musculoskeletal, and cardiovascular systems. These include potentially permanent or disabling effects such as tendon inflammation and rupture, damage to peripheral nerves (peripheral neuropathy), and severe changes in mood or mental health (e.g., anxiety, depression, confusion). Less commonly, there are reports of abnormal heart rhythms, particularly in patients with pre-existing cardiac conditions.

System-Organ Class Common Adverse Reactions (Documented Frequency) Serious Safety Concerns (Regulatory Warnings)
Gastrointestinal Nausea, vomiting, diarrhea, abdominal pain. Clostridium difficile-associated diarrhea (CDAD).
Nervous System Headache, dizziness, insomnia, lightheadedness. Peripheral neuropathy, psychosis, suicidal ideation.
Musculoskeletal Joint pain, muscle ache. Tendinitis and tendon rupture.
General Fatigue. Hypersensitivity and severe allergic reactions (e.g., Stevens-Johnson syndrome).

Safety Restrictions and Monitoring

Cinz is formally contraindicated in patients with a known history of hypersensitivity or severe allergic reaction to the drug or its class. Regulatory documents recommend close patient monitoring for initial signs of the serious risks, particularly in older patients, those with renal impairment, or individuals concurrently taking corticosteroids or certain cardiac medications. Treatment should be immediately discontinued if signs of tendon damage, peripheral nerve damage, or significant mental status changes appear.

The information above summarizes officially documented adverse reactions and safety restrictions based on regulatory classification standards.

Overdose and Emergency Response

Overdose and when to seek help

Overdose with Cinnarizine (Cinz) has been documented across a wide dose range, with cases reported involving doses up to 2,250 mg. The official regulatory profile describes the clinical manifestations primarily as effects of the drug's anticholinergic activity.


Documented Overdose Manifestations

The most commonly reported clinical signs and symptoms include alterations in consciousness, spanning from somnolence and stupor to coma. Additional documented manifestations involve vomiting, extrapyramidal symptoms, and hypotonia (low muscle tone).


Severe Outcomes and Emergency Action

Regulators have noted that overdose is associated with severe and potentially fatal risks. Deaths have been reported following single or multi-drug overexposure. A significant population-specific risk is the development of seizures or convulsions in young children.

Immediate medical attention is required for any patient exhibiting severe manifestations, such as significant alterations in consciousness or seizures. Pediatric patients should be observed in a healthcare facility due to the heightened risk of neurological complications. Since no specific antidote is known, management focuses entirely on symptomatic and supportive care, which may involve steps like administering activated charcoal or gastric emptying as recommended by a poison control center.

Therapeutic Uses of Cinz

What Cinz Treats: Main Uses and Benefits

Cinz is commonly used across domains where additional symptomatic support is needed for issues relating to balance and movement. It is often applied in scenarios where additional management of discomfort is required, contributing to easing the overall symptom load. The medication is commonly used to help with the dizziness and sickness associated with various balance and motion disorders.

Easing Dizziness and Vertigo

The medication is applicable in conditions characterized by periods of heightened symptoms, such as vertigo and Ménière's disease. This symptomatic relief helps manage symptom clusters that may appear suddenly, specifically the spinning sensation of vertigo and unsteadiness. Cinz is considered relevant for managing symptoms related to balance and inner ear function, providing supportive relief when symptoms interfere with routine activities.


Managing Motion Sickness Nausea and Inner Ear Symptoms

Cinz is also applied across domains where additional symptomatic support is needed in situations involving movement, addressing the nausea and vomiting caused by motion. Furthermore, it is relevant in contexts involving symptoms linked to organ-specific functional stress in the inner ear, assisting with manifestations like tinnitus (ringing in the ears). By easing these challenging symptoms, Cinz contributes to improved comfort during symptomatic periods.

Quick Fact: Relief for Balance Discomfort Cinz is used for managing symptoms that create noticeable functional strain related to inner ear disorders, supporting general well-being during symptomatic phases.

Eligibility and Restrictions for Use

Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed (as stated in label) Adults and Adolescents (over 12 years): Considered eligible populations for standard labeled use.
Populations for whom use is not recommended Nursing Mothers/Lactation: Use is not recommended due to lack of data on excretion in human breast milk.
Populations for whom use is contraindicated Hypersensitivity: Patients with known hypersensitivity to cinnarizine or any of the product's excipients.
Age-related eligibility rules Children Under 5 Years of Age: Use is not suitable or contraindicated for this age group. Older Adults: Caution is required due to increased susceptibility to effects like somnolence.
Condition-specific eligibility rules Severe Organ Impairment: Use is contraindicated in patients with severe renal impairment (creatinine clearance leq 25 mL/min) and severe hepatic impairment (as noted in some licenses).
Pregnancy and lactation eligibility status Pregnancy: Not advisable as the safety of Cinz in human pregnancy has not been established.
Eligibility-related restrictions Parkinson's Disease: Must only be given if the regulatory advantages are determined to outweigh the possible risk of aggravating the condition.

Eligibility Classifications (High-Level)

Category Official Regulatory Statement
Eligibility severity classification Contraindicated (Hypersensitivity, Severe Organ Failure), Not Recommended (Children under 5, Lactation), Use with Caution/Conditional (Parkinson's Disease, Mild Organ Impairment).
Eligibility-context constraints Use should be avoided in patients with porphyria. Caution is advised regarding potential for increased effects in those with specific hereditary intolerances (e.g., lactose) and in patients taking concurrent Central Nervous System depressants.

Resulting Eligibility Structure

Official eligibility statements:

  • Cinz is contraindicated for people with known hypersensitivity to the active substance or excipients, and in children under 5 years of age.
  • Use is avoided in individuals with the blood disorder porphyria.
  • Patients with pre-existing Parkinson's disease may only be eligible if the documented benefits significantly outweigh the risks of symptom aggravation.
  • The medicine is not advisable during pregnancy and not recommended while breastfeeding due to insufficient human safety data.
  • Caution is mandatory for use in the older adult population and in patients with renal or hepatic insufficiency.

Connection to the overall eligibility profile: Official regulatory documents define Cinz eligibility through clear contraindications for hypersensitivity and age, establishing who must not use the medicine. Eligibility is conditionally restricted for those with Parkinson's disease and organ impairment. The absence of established safety data strictly limits use in pregnant and breastfeeding populations.

What should I know about interactions with other medicines?

Cinz Interactions with other medicines and products

This section details the officially documented interaction patterns for Cinz (Cinnarizine), based strictly on government regulatory documents, focusing on required restrictions and constraints.


Pharmacodynamic Interactions

The primary interaction profile for Cinz stems from its nature as a first-generation antihistamine, which can lead to additive sedative effects (pharmacodynamic potentiation) when co-administered with other central nervous system (CNS) active substances.

Interacting Product Category Official Regulatory Statement
CNS Depressants (including sedatives, hypnotics) Co-administration may potentiate the sedative effects of Cinz or the co-administered drug.
Tricyclic Antidepressants Concurrent use may potentiate the sedative effects of either agent.

Timing and Procedural Constraints

Cinz can interfere with diagnostic tests, which necessitates temporary discontinuation before certain procedures.

  • Allergy Skin Testing (Dermal Reactivity Indicators): Due to its antihistaminic effect, Cinz may prevent a positive reaction, requiring the medicine to be stopped 4 days prior to testing.

Required Substance Restrictions

Patients are explicitly warned against specific concomitant substance use:

  • Alcohol: Avoid drinking alcohol as it may potentiate the sedative effects caused by Cinz.

Population-Specific Cautions

Official labels advise that Cinz should be used with care in patients who have Hepatic Insufficiency or Renal Insufficiency.

Mechanism of Action

How Cinz Works

Cinz acts as a modulator by directly engaging a defined set of receptors or enzymes within specific cellular pathways. This targeted interaction is designed to dampen overactive or dysregulated signaling, which results in altered pathway kinetics within the affected biological system.

The drug intervenes in the mechanistic cascades responsible for producing and releasing key inflammatory mediators. By influencing the activity of regulatory enzymes, Cinz modifies the amplitude of excessive mediator activity, which affects the duration and extent of pathway activation at the tissue level.

Furthermore, Cinz engages molecular mechanisms that influence regulatory feedback loops within the targeted pathways. This activity modifies signal integration where prolonged or excessive activation occurs, thereby altering the duration of pathway engagement. The compound's effect profile is shaped exclusively by these specific pharmacodynamic actions.

Dosage and Administration Information

How to Use Cinz: Official Administration Guidelines

Cinnarizine (Cinz) is administered via the oral route, commonly available as tablets in strengths like 15 mg, 25 mg, and 75 mg. The established usage protocol specifies varying doses and frequency patterns depending on the context of use.


Standard Dosing and Timing

Use Context Adult Dosing (Typical) Frequency Pattern Administration Detail
Balance Disorders 25 mg (or 75 mg) Three times daily (TID) or Once daily (OD) Taken preferably after meals.
Motion Sickness 25 mg (or 30 mg total) Initial dose 30 minutes to 2 hours before travel May be repeated every 6 to 8 hours during the journey.

For all uses, the maximum recommended total daily intake is 225 mg. Tablets may be sucked, chewed, or swallowed whole with water, which is a key administrative instruction for the solid oral form.


Duration and Special Populations

Treatment duration is context-dependent, ranging from episodic use required only during travel, to potentially several months for individuals managing chronic inner ear and balance disorders. The dosage may be progressively increased for vestibular issues under expert guidance.

For older adults, no specific dose adjustment is necessary, with the standard adult regimen being applicable. Specific dose reductions, generally to half the adult dose (e.g., 7.5 mg to 15 mg three times daily), are officially specified for children aged 5 to 12 years. The use of Cinz is not recommended for children under five years old. Furthermore, regulatory guidelines advise using the medicine with care in patients who have pre-existing hepatic or renal insufficiency.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Cinz (Cinnarizine)

This section provides an overview of the official research and clinical trials that have examined Cinz (Cinnarizine) in various settings. This summary strictly focuses on describing what was observed in studies, what outcomes were measured, and where evidence limitations exist, and does not offer clinical advice, dosing instructions, or safety information.


Evidence for Use in Vestibular Vertigo

Research exploring Cinz was studied for vertigo—a condition characterized by fluctuating or episodic manifestations—primarily involves Randomized Controlled Trials (RCTs) and systematic reviews. These studies were designed to measure changes in symptoms related to functional imbalance and patient-reported outcomes describing perceived discomfort.

Researchers track metrics like the Mean Vertigo Score (MVS) and the Dizziness Handicap Inventory (DHI). The largest research efforts often focus on Cinnarizine in a fixed-dose combination with another drug. Findings from meta-analyses describe a large volume of research for this fixed-dose combination product. For Cinz as a single-active ingredient, the evidence level is generally characterized as moderate, often relying on data from older or smaller controlled trials, which contribute to the broader evidence landscape but require careful distinction.

Evidence for Use in Motion Sickness

Cinz was studied for motion sickness primarily through historical and contemporary controlled trials, frequently involving single-dose administration. These trials were applied in studies examining patient-reported experiences of motion sickness, particularly outcomes related to physical discomfort such as nausea and vomiting.

Studies report how symptoms evolved in the observed populations over the course of the experimental exposure. When Cinnarizine was compared against other anti-motion sickness agents, findings were mixed regarding patterns of measurements. Comparative evidence is lacking for Cinz against many newer anti-emetic medications, as much of the high-level data is foundational and historical.

What Remains Uncertain in the Research Landscape for Cinz

A key limitation is the reliance on extensive, high-quality RCT data for the fixed-dose combination product; consequently, the volume of high-level single-agent evidence in the most recent trials is less prominent. Furthermore, follow-up durations were limited in many of the key effectiveness trials, meaning there is limited information for long-term outcomes or the consistency of symptom measures over periods longer than two months. Finally, evidence quality varies across studies, and findings related to complex, associated symptoms like tinnitus are largely secondary, underscoring areas where research is ongoing and further dedicated study is needed.

Frequently Asked Questions (FAQ)

Common questions about Cinz (FAQ)


Q: How quickly does Cinz typically start working?

According to the official product information, Cinz is absorbed quite rapidly after oral intake. The level of medicine in the blood, known as peak plasma concentration, is typically reached within 1 to 4 hours. For preventing motion sickness, official guidance suggests taking the initial dose 30 minutes to 2 hours before travel begins.


Q: What happens if I miss a dose of Cinz?

Regulatory patient information states that if a dose is missed, it should be taken as soon as it is remembered. However, if it is nearly time for the next scheduled dose, official patient information generally advises skipping the missed dose and continuing the regular routine. It is officially advised not to take two doses at the same time to make up for a forgotten one.


Q: Is it common to feel tired when starting Cinz?

Yes, official regulatory documents list feelings of somnolence (drowsiness) and fatigue among the documented side effects. Official documentation notes these effects may be more apparent at the start of treatment.


Q: Is Cinz available as a generic medicine?

The active substance in Cinz is Cinnarizine, which is the internationally recognized generic name for the compound. While Cinz is a trade name, the generic compound is widely available and marketed under many different brand names globally.


Q: Can Cinz be taken with other long-term maintenance medications?

Official warnings specify that caution is required when Cinz is used in combination with other medicines that act on the Central Nervous System (CNS), such as certain sedatives or antidepressants. This is because combining them may increase feelings of drowsiness or sedation.


Q: What is the recommended duration of use for Cinz?

The duration of use is highly dependent on the condition being addressed, ranging from episodic use for travel to several months for chronic inner ear disorders. Regulatory documents note an increased risk of movement disorders (like Parkinsonism) associated with prolonged use, particularly in older adult populations.


Q: What is the biggest difference between Cinz and other similar medicines? (Descriptive only)

Cinz is officially classified pharmacologically as a compound with a dual mechanism of action, distinguishing it from many simple antihistamines. Official product information describes it as functioning as both a first-generation antihistamine and a calcium channel blocker.


Q: Does Cinz cause weight gain or loss?

Official regulatory information lists weight gain as a documented adverse effect associated with this medicine. This side effect has been reported in the context of prolonged use.


Q: Can Cinz affect my sleep?

Yes, official regulatory documents include both somnolence (drowsiness) and insomnia (difficulty falling or staying asleep) among the reported side effects affecting the nervous system.


Q: How long does Cinz stay in your system?

Pharmacokinetic data in regulatory documents indicate that the medicine is eliminated from the body relatively quickly. The elimination half-life—the time it takes for the amount of drug in the body to be reduced by half—is commonly reported to be between 3 to 6 hours.


Q: Is Cinz a drug that requires a special prescription or monitoring?

Cinz is available in some countries without a prescription for motion sickness but typically requires a prescription for chronic conditions. Regulatory documents advise close patient monitoring for signs of serious risks in specific groups, such as older adults and those with pre-existing organ impairment.


Q: If I feel better, is it okay to stop taking Cinz?

For short-term uses, such as preventing motion sickness, the medicine can be stopped when no longer needed. If Cinz is being used for chronic inner ear disorders, the patient information emphasizes that stopping the medicine should be discussed with a professional, as discontinuation may lead to the return of symptoms.


Q: Are there any major warnings associated with Cinz use?

Cinz does not carry an official US FDA Black Box Warning. The most severe cautions noted in regulatory documents involve the potential for developing Parkinsonism-like symptoms (movement disorders) and the requirement for careful use in older adult populations and those with certain conditions.


Q: How is Cinz usually packaged or sold?

Cinz is formulated for oral use and is typically supplied as a solid preparation, such as tablets or capsules. It is commonly sold in commercial blister packs, with the exact count size varying based on the regulatory market and commercial license.


Q: Is Cinz used for preventing conditions or just treating them?

Official regulatory indications confirm that Cinz is used for both. It is approved for the prophylaxis (prevention) of motion sickness, and also for the symptomatic treatment (relief) of existing symptoms of vestibular disorders like vertigo and nausea.


Q: Are there diet restrictions while using Cinz?

Official patient information states that there are no specific food or drink restrictions while taking Cinz, other than avoiding alcohol (due to the potential for increased sedation). It is generally advised to take the dose after meals to help reduce possible stomach irritation.


Q: Does Cinz affect mental clarity or focus?

Due to its potential to cause drowsiness (somnolence) and lightheadedness, regulatory warnings state that individuals are advised to avoid driving or operating machinery if they experience these effects, as the medicine may impair performance and alertness.


Q: Are there any specific laboratory tests required before starting Cinz?

Regulatory documents state that as an antihistamine, Cinz may interfere with the results of certain diagnostic procedures. It must be discontinued 4 days prior to any scheduled allergy skin testing to ensure accurate results.


Q: Why are people sometimes confused about the proper way to use Cinz?

Confusion may arise because the official dosage instructions are highly variable. The required schedule is different depending on the reason for use, ranging from a single episodic dose for travel to a multiple times daily regimen for managing chronic balance disorders.


Q: Is there a list of common drug interactions for Cinz?

Regulatory documents include a concise list of clinically important interactions. This profile focuses on warnings and constraints related to the use of alcohol, CNS depressants (including sedatives), and Tricyclic Antidepressants.


Q: Is Cinz a new medication?

The active compound, Cinnarizine, is an established medicine with a long history. It was first synthesized and documented in 1955.


Q: What is the purpose of the black box warning on Cinz's label (if applicable)?

Cinz (Cinnarizine) does not have a US FDA Black Box Warning. The most serious cautions documented on its label globally concern the potential for developing movement disorders, specifically Parkinsonism-like symptoms, especially when used for long periods.

How should Cinz be stored and disposed of?

How to Store and Dispose of Cinz?

The storage and disposal of Cinz (Cinnarizine tablets/capsules) must adhere strictly to the conditions documented in official regulatory labeling to ensure product stability and public safety.

Official Storage Requirements

Requirement Specifics Mandated by Regulatory Labeling
Temperature Store at a temperature not exceeding 30°C. The medicine must not be frozen.
Protection Store in a dry place and protect from light (e.g., store in the original container/outer carton).
Child Safety Must be kept out of the sight and reach of children.

Disposal Instructions

Disposal of unused or expired product must follow explicit regulatory guidance. The official rule is not to dispose of Cinz via wastewater or household waste. Instead, the medicine must be discarded in accordance with local pharmaceutical waste requirements by returning it to a pharmacy or designated collection point.

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

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