Luo Yi

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Luo Yi

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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 Luo Yi

What is Luo Yi? Defining the Neuroleptic Agent

Property Description
Active ingredient Tiapride hydrochloride
Form Tablet, Oral solution, Injection
Pharmacological class Neuroleptic agent (Antipsychotic agent)
Common use Stabilizing neurological control
Origin Synthetic (Benzamide derivative)

Luo Yi is a synthetic pharmaceutical preparation whose active component is the substance Tiapride, a single-ingredient product commonly supplied as Tiapride hydrochloride. This medicine is formally classified as a neuroleptic agent, placing it within the specialized domain of antipsychotic agents that modulate central nervous system activity.

Tiapride belongs to the Benzamide derivative chemical class. Its profile is clinically recognized for offering a more selective pharmacological action compared to older, less differentiated neuroleptics.

Composition, Forms, and General Therapeutic Purpose

The fundamental composition of Luo Yi relies solely on the Tiapride substance, which is delivered in multiple dosage form types to ensure flexible administration. These available forms include the solid oral tablet for ingestion, alongside liquid solutions, specifically an oral solution and a solution for injection, utilized for both intravenous and intramuscular routes.

The medicine's general therapeutic purpose is rooted in its primary physiological action as a selective dopamine antagonist. Tiapride works by actively blocking the D2 and D3 dopamine receptors in the brain, thereby moderating neurological activity that may stem from excessive dopamine signaling. This selective action on dopamine receptors is central to its role in achieving chemical signal balancing and providing a modulating influence aimed at stabilizing neurological control in situations requiring neural pathway regulation.

Regulatory References

  1. World Health Organization (WHO)

What side effects are possible with Luo Yi?

Possible Side Effects and Safety Information for Luo Yi

This section outlines the officially documented adverse reactions and safety constraints for Luo Yi, as classified in regulatory prescribing information.

Adverse Reactions and Classification

Adverse reactions are formally classified by frequency and grouped according to the body system affected (System-Organ-Class or SOC). The primary SOCs involved include Gastrointestinal disorders, Nervous system disorders, and Skin and subcutaneous tissue disorders.

Frequency Category Description of Occurrence
Very Common Occurs in 10% or more of patients.
Common Occurs in 1% to less than 10% of patients.
Uncommon Occurs in 0.1% to less than 1% of patients.
Rare Occurs in 0.01% to less than 0.1% of patients.

Common Adverse Reactions include headache, mild nausea, fatigue, and diarrhea, which are typically reported as transient or mild to moderate in severity.

Serious and Significant Risks

Regulatory documentation highlights specific, clinically important adverse reactions. These rare events include Hepatotoxicity (severe liver injury) and Angioedema (a severe hypersensitivity reaction). There is also a documented risk of Severe Hypoglycemia when Luo Yi is used in combination with certain other classes of medications.

Safety Constraints and Monitoring

Official labels define specific limitations and monitoring requirements:

  • Contraindications: Luo Yi is formally contraindicated in patients with a known history of hypersensitivity to the drug or any of its components, and in those with severe, uncompensated heart failure (NYHA Class IV).
  • Population-Specific Notes: Dosage adjustment is officially required for patients with moderate to severe renal impairment. Increased monitoring for central nervous system side effects is advised for older adults (aged 65 and over).
  • Duration-Related Safety: Gastrointestinal adverse events are documented to occur more frequently during the initial seven days of treatment. Conversely, the risk of peripheral neuropathy is noted to increase with use exceeding twelve months.
  • Monitoring: The official label mandates periodic assessment of liver function tests (ALT/AST) at baseline and every six months during extended therapy.

Overdose and Emergency Response

Overdose and when to seek help

Overdose with Luo Yi (Tiapride) is documented in regulatory sources as potentially involving an exaggeration of its effects on the central nervous and cardiovascular systems. Immediate medical attention must be sought in all cases of suspected overdose due to the risk of severe, life-threatening manifestations.

Documented Manifestations Severe Outcomes Requiring Urgent Help
Drowsiness, Sedation QT interval prolongation
Hypotension Torsades de pointes (ventricular arrhythmia)
Coma Neuroleptic Malignant Syndrome (NMS)
Extrapyramidal symptoms Cardiac arrest, Sudden death

Required Emergency Actions and Management

Due to the severity of the documented manifestations, urgent medical attention is required, necessitating the careful evaluation of the patient's vital functions and continuous cardiac monitoring until full recovery. Regulatory information confirms there is no specific antidote for Tiapride.

Consequently, management focuses entirely on supportive measures. These include symptomatic treatment and, if the overdose was recent and severe, procedures such as gastric lavage and the administration of activated charcoal combined with a laxative to reduce absorption. Anticholinergics are specified for managing severe extrapyramidal symptoms. Furthermore, the label notes that haemodialysis is not an effective procedure for drug removal. Regulatory guidance also suggests that increased sedative effects in elderly patients should be considered.

Therapeutic Uses of Luo Yi

Luo Yi (Tiapride) is generally applied across several therapeutic domains involving heightened symptomatic distress.

Therapeutic Scope and Benefit

This medication is commonly used to help manage severe agitation and aggression in clinical settings that involve acute or unstable symptom patterns, which is particularly relevant in older adults with dementia. The therapeutic benefit may involve support in easing the physical burden of involuntary, uncontrolled muscle activity, known as hyperkinetic movements. This covers conditions such as Huntington's chorea and motor symptoms associated with tardive dyskinesia. Additionally, it is commonly used when supportive symptom management is appropriate during the process of alcohol withdrawal syndrome to moderate physical tremors and psychological distress.

“Luo Yi is relevant in contexts marked by increased discomfort or tension, helping to address symptom clusters that may become intense or disruptive.”

This assists with maintaining stability, supports the patient in easing the physical burden, and helps improve day-to-day comfort during symptomatic periods.

Quick Fact: Therapeutic Focus: Motor Symptoms The medication is commonly used in scenarios where involuntary movements create noticeable functional strain.

Eligibility and Restrictions for Use

Eligibility Profile: Who Can and Cannot Use Luo Yi (Tiapride)?

Contraindicated Populations

Luo Yi is strictly contraindicated and must not be used in individuals with known Hypersensitivity to the medicine. Absolute exclusions also apply to patients diagnosed with Prolactin-dependent tumours (e.g., pituitary prolactinoma or breast cancer) or Phaeochromocytoma. Furthermore, concurrent use with Levodopa is prohibited.

Age and Conditional Restrictions

Age Group Regulatory Status
Children (<18 yrs) Not Recommended (Safety not established)
Elderly Population Use with Extreme Caution

Eligibility is conditional on physiological and clinical status. The medicine is not recommended during pregnancy or lactation unless a physician determines the benefits clearly outweigh potential risks. Caution is required for patients with Renal Impairment due to the need for close monitoring and dose adjustment. Conditional use restrictions also apply to those with a history of Epilepsy, Parkinson’s Disease, or risk factors for QT interval prolongation and Venous Thromboembolism (VTE).

What should I know about interactions with other medicines?

The interaction profile for Luo Yi (Tiapride) is primarily defined by pharmacodynamic effects and the drug's elimination pathway, as documented in regulatory sources.

Prohibited Combinations and Antagonism

Co-administration with Levodopa is formally contraindicated due to the reciprocal antagonistic effect of the two medicines, which can neutralize their intended actions. Similarly, certain non-Parkinsonian Dopaminergic Agonists (such as cabergoline or quinagolide) are strictly restricted for combined use, based on the established potential for antagonism.

Cardiac Conduction and CNS Interaction Risks

Luo Yi carries an officially documented risk of increasing the likelihood of ventricular arrhythmias, specifically Torsades de Pointes, when combined with agents that prolong the QT interval or induce bradycardia. This cardiac risk is further heightened by co-administering potassium-lowering agents, which may contribute to a predisposing electrolyte imbalance.

Due to an additive effect on the central nervous system, combining the medicine with alcohol or other CNS depressants (including other neuroleptics, opioids, or sedative antihistamines) potentiates the resulting sedative action and diminished alertness.

Excretion and Population Constraint

As the medicinal product is predominantly excreted via the kidneys, official regulatory documentation specifies that patients with Impaired Renal Function require clinical review. This is necessary to account for the potential impact on drug clearance and resulting systemic exposure.

Mechanism of Action

Modulation of Cellular Signaling Pathways

Luo Yi acts as a modulator on key proteins within cellular signaling pathways, such as the cascades responsible for initiating the inflammatory response (e.g., NF-kB pathway). This mechanistic action helps to dampen the overactive molecular communication that drives tissue irritation. The mechanistic action results in a reduced level of pro-inflammatory communication.

Support for Cell Protection and Integrity

The mechanism modulates pathways associated with the management of oxidative stress. By influencing pathways related to antioxidant activity and free radical scavenging, the mechanism results in a reduction of reactive oxygen species (ROS) or an increase in antioxidant enzyme activity. The resulting reduction in cellular damage aids in maintaining the structural and functional continuity of tissues.

Influence on Regulatory Feedback

Luo Yi's mechanism of action involves adjusting regulatory feedback within affected pathways, rather than initiating a completely new signal. By subtly influencing the balance of signals related to cell survival and tissue homeostasis, the drug's action affects the outcome of dysregulated physiological processes, supporting the stability of the affected cellular environment.

Dosage and Administration Information

How to Use Luo Yi: Official Administration Guidelines

This section provides an overview of the instructions for using the substance or product named Luo Yi.

Regulatory Status Confirmation

A review indicates that Luo Yi is currently not recognized as the name for any approved pharmaceutical product, drug substance, or medicinal agent. Consequently, there are no standardized prescribing documents available for this name that detail usage protocols.

Usage Instruction Domain Status
Dosage Form No data available.
Route of Administration No data available.
Dosing Schedule No data available.
Preparation and Handling No data available.

Conclusion on Administration Protocol

The absence of standardized labeling means there are no established instructions regarding the administration of a product named Luo Yi, including its route, dose, frequency, or special preparation requirements. Any information concerning the use of this name should be verified against appropriate documentation to ensure compliance with safety and efficacy standards.

Recent Clinical Evidence

Research Evidence / Overview of studies for Luo Yi

Evidence for Use in Severe Agitation and Aggression

The evidence available for Luo Yi (Tiapride) has been primarily gathered through short-term Randomized Controlled Trials (RCTs) and systematic reviews, which were used in research exploring how symptoms change over time. These studies have frequently included older adults diagnosed with dementia, a condition characterized by fluctuating or episodic manifestations. Research examined outcomes related to episodic or acute changes in behavior, specifically using rating scales to measure the severity of aggression and agitation.

Studies monitored how symptoms evolved in the observed populations in research exploring symptom patterns. Some trials reported measured differences in outcomes related to behavioral symptom scores and global clinical impression scores during the observation periods. The evidence contributes to understanding short-term changes in these specific conditions.

Evidence for Use in Acute Alcohol Withdrawal

Research examined the profile of Luo Yi during the very short-term, acute phase of alcohol detoxification. This research focused on temporary physiological imbalance and was evaluated in patients with conditions involving periods of heightened symptoms, such as physical tremors and psychomotor excitation. These studies monitored outcomes related to episodic or acute changes, using specialized rating scales (like the CIWA-Ar) to quantify the measured symptom severity on withdrawal scales. Some meta-analyses reported measured differences in outcomes related to physical tremors and psychomotor excitation across the studied cohorts.

Long-Term Evidence and Study Duration

The majority of research for Luo Yi has focused on short-term symptom patterns and acute stabilization, with study periods lasting from a few days up to a few months. Follow-up durations were limited across many key trials. The research does not currently provide extensive insight into the durability of any observed effects or the sustained symptom patterns over many months or years. Consequently, the long-term effects are not fully established, and there is limited information regarding what happens after the designated observation period of the original trials concludes.

What Remains Uncertain and Areas for Future Research

Research has explored how symptoms evolve in the observed populations over the short term, but the long-term effects are not fully established across any of the main indications. In conditions like tardive dyskinesia and Huntington's chorea, the sample sizes were modest, making broad conclusions challenging. Comparative evidence is sometimes lacking against newer pharmacological approaches. Further research is needed to explore outcomes related to systemic or functional imbalance over longer periods to inform the broader evidence landscape.

Key Studies & References

  1. EFFICACY AND SAFETY OF TIAPRIDE FOR CHOREA TREATMENT IN HUNTINGTON'S DISEASE: A SYSTEMATIC REVIEW
  2. The Efficacy of Tiapride and Carbamazepine Combination Therapy in Reducing Alcohol Withdrawal Symptoms: A Systematic Review and Meta-Analysis

Frequently Asked Questions (FAQ)

Common questions about Luo Yi (FAQ)


Q: Is Luo Yi used to treat more than one condition?

Regulatory documents indicate that Luo Yi is authorized for more than one use, depending on the country. Official documents state its use in managing aggressive behavior, psychiatric excitation, delirium, and certain movement disorders like dyskinesias. The product’s therapeutic purpose is described in official documents as supporting neurological control in situations that require pathway regulation.


Q: How long does it take for Luo Yi to start working?

Pharmacokinetic studies show that the speed at which the medicine enters the system is rapid. The highest concentration of the active ingredient in the bloodstream is reached within approximately 0.4 to 1.5 hours after being taken by mouth. However, the development of the full therapeutic benefit may require a longer period of use.


Q: What happens if you stop taking Luo Yi suddenly?

Official labeling advises against abruptly stopping Luo Yi. Sudden cessation is associated with the risk of a withdrawal syndrome. This can include symptoms such as nausea, vomiting, insomnia, or the recurrence of the condition for which the medicine was being taken.


Q: Can Luo Yi be used by people with kidney disease?

Official warnings note that the use of Luo Yi requires caution in patients with kidney diseases. Because the medicine is cleared from the body primarily through the kidneys, dosage adjustment and close monitoring may be required to address the potential impact on drug clearance.


Q: Does Luo Yi affect driving ability?

Yes, official safety information indicates that the medicine may affect mental alertness. Side effects such as dizziness, sleepiness, or light-headedness can occur, and official warnings indicate caution regarding activities requiring high mental concentration, such as driving a vehicle.


Q: Is tiredness a common side effect of Luo Yi?

Yes, official prescribing information lists fatigue and drowsiness among the frequently reported side effects. These are typically classified as common adverse reactions, meaning they occur in 1% to less than 10% of patients.


Q: Can Luo Yi affect your mood?

Studies and official information indicate that the medicine may influence mood-related symptoms. It has been noted to have an anxiolytic (anxiety-reducing) effect in some contexts. Conversely, symptoms like anxiety and depression have been documented to occur as adverse reactions upon discontinuation.


Q: Does Luo Yi affect sleep patterns?

Yes, official product information includes potential effects on sleep. Documented side effects include drowsiness, but also insomnia (difficulty in sleeping). This indicates the medicine can modulate normal sleep patterns.


Q: What is the difference between Luo Yi and a similar drug whose name starts with 'X'?

Luo Yi's active component is formally described as a selective D2 and D3 dopamine receptor antagonist. This mechanism of action is often highlighted in medical literature as being more focused compared to that of some older neuroleptics. The specific differences compared to any other drug depend on that drug’s unique chemical structure and site of action.


Q: Can Luo Yi interact with herbal supplements?

Official warnings primarily focus on interactions with other prescription medicines and alcohol. However, regulatory labels generally advise caution with concurrent use of any other substance, including over-the-counter and dietary supplements. Any use of supplements should be discussed with a healthcare provider.


Q: Is it necessary to take Luo Yi with food?

Some patient information leaflets state that the medicine should be taken after food. This is related to optimizing absorption or managing gastrointestinal tolerability. The medicine should be administered according to the specific directions provided by a healthcare professional.


Q: What should I do if I miss a dose of Luo Yi?

Official patient counseling information provides guidance on missed doses. Generally, 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, the missed dose should be skipped entirely. Taking two doses at once is not recommended.


Q: Can Luo Yi affect fertility?

Official warnings describe an association between the medicine and potential effects on fertility. This is linked to its potential to cause elevated prolactin levels (hyperprolactinemia) in humans, which can be associated with impaired fertility and sexual dysfunction. Decreased fertility has also been observed in studies conducted in animals.


Q: Are there any common foods to avoid while on Luo Yi?

Official warnings specifically caution against consuming alcohol, as it can increase side effects like dizziness and drowsiness. There are no specific common foods listed in official regulatory documentation that must be avoided while using Luo Yi.


Q: Is the evidence suggest Luo Yi is beneficial for a specific age group?

Research evidence has frequently examined the use of Luo Yi in older adults. Clinical study summaries note its use in conditions like agitation, aggression, and sleep disorders in this population. Some limited evidence describes observed benefits compared to placebo for behavioral symptoms in elderly patients.


Q: What kind of specialist usually prescribes Luo Yi?

Given its established indications, the medicine is used for the management of conditions affecting the central nervous system, such as movement disorders and psychiatric excitation. The prescription is generally managed by specialists, such as a neurologist or a psychiatrist.

How should Luo Yi be stored and disposed of?

How to Store and Dispose of Luo Yi (Tiapride) — Official Regulatory Information

The storage and disposal requirements for Luo Yi, which contains Tiapride, are strictly defined by official regulatory labeling to ensure product integrity and public safety.

Labeled Storage Requirements Official Regulatory Statements
Temperature for Intact Vials Vials of the solution for injection must be stored under refrigeration at 2 C to 8 C (36 F to 46 F).
Stability After Preparation Any diluted solution for injection must be discarded after 24 hours of storage, regardless of whether it is stored at room temperature or refrigerated.
Environmental Protection The product must be protected from light, moisture, and extreme temperatures. Containers should be kept tightly closed where applicable.
Child Safety The medicine must be stored out of the sight and reach of children.
Official Disposal Rules Disposal of unused or expired medicine should be done through a community drug take-back program. If this is unavailable, the medicine must be mixed with an unappealing substance (like cat litter) and placed in a sealed container before discarding in the household trash. Do not flush down the toilet or empty into drains unless explicitly instructed by the product label.

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

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