Amide

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Amide

Method of action: Antipsychotic, Psycholeptics

Treatment option: Delirium, Hallucinations

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 Amide

Amide (Amisulpride): Defining the Medicinal Entity and Classification

Property Description
Active Ingredient Amisulpride
Form Oral tablet, Solution for injection
Pharmacological Class Atypical Antipsychotic Agent (Second-Generation)
Common Use Stabilizing thought processes; relieving severe nausea
Origin Synthetic substituted benzamide derivative

Amide is the preparation containing the International Nonproprietary Name (INN) drug, Amisulpride, which is primarily categorized as an atypical antipsychotic agent (second-generation antipsychotic). Amisulpride is chemically a synthetic substituted benzamide derivative, a structural feature that places it within the Benzamides subclass of antipsychotics.

The active ingredient, Amisulpride, is a single-component product derived entirely through chemical synthesis, with its high limbic system selectivity being a key differentiating factor that helps reduce the potential for movement-related effects often associated with less selective compounds. The medication is prepared for patient use in two key dosage forms: a solid oral tablet for ingestion and an aqueous solution for intravenous injection.

Core Purpose: The Dual Role of the Atypical Antipsychotic

The general purpose of Amisulpride stems from its selective dopamine D2 and D3 receptor antagonist function, meaning it precisely modulates the signaling of dopamine, a critical brain chemical. This core mechanism serves its primary role as a neuropsychiatric agent, providing support for the stabilization of thought processes and emotional regulation. The profile of Amisulpride is characterized by its ability to selectively bind to these receptors, which is its basis for helping maintain a balanced mental state.

Significantly, Amisulpride also possesses a distinct utility as an antiemetic agent, providing relief for feelings of sickness and vomiting. This dual-purpose classification is noteworthy: its effectiveness in preventing and treating postoperative nausea and vomiting is a recognized clinical application. The resulting functional breadth makes Amisulpride a versatile compound.

Regulatory References

  1. PubMed Review
  2. dopamine D2 and D3 receptor antagonist

What side effects are possible with Amide?

Possible Side Effects and Safety Information

The safety profile of Amide (Amisulpride) is officially documented by government regulatory authorities, detailing adverse reactions by their physiological impact and frequency. This information is classified according to standard regulatory terminology, such as those established by the European Medicines Agency (EMA) and the U.S. Food and Drug Administration (FDA).


Frequency-Classified Adverse Reactions

Adverse reactions are grouped by their likelihood of occurrence:

  • Very Common (Affecting ge 1 in 10 patients): The most frequently reported effects are Extrapyramidal Symptoms (EPS), which include involuntary movements, tremor, and rigidity.
  • Common (Affecting ge 1 in 100 to <1 in 10 patients): These include hyperprolactinaemia (leading to endocrine-related effects like amenorrhoea or galactorrhoea), somnolence, insomnia, anxiety, agitation, weight gain, and common gastrointestinal effects like constipation and nausea.
  • Uncommon/Rare: Less frequently observed effects include seizures, tardive dyskinesia, confusion, hyperglycemia, bradycardia, and blood cell count changes such as neutropenia or leukopenia.

Serious Adverse Reactions and Safety Constraints

The official labeling documents rare, serious reactions that primarily affect the heart and blood systems:

  • Serious Events: These include Neuroleptic Malignant Syndrome (NMS) and severe cardiovascular events such as QT interval prolongation, Torsade de pointes, and ventricular fibrillation.
  • Safety Constraints: Amide is formally contraindicated in patients with pre-existing conditions sensitive to prolactin, such as prolactin-dependent tumours (e.g., prolactinoma or breast cancer), and is not recommended for use in children up to puberty.

Population and Duration Patterns

Regulatory safety notes indicate that Acute Extrapyramidal Symptoms may appear early in treatment and are often dose-related. Tardive dyskinesia is typically associated with long-term administration. Special safety considerations are specified for older adults (due to increased risk of hypotension) and require dose adjustment in patients with renal impairment.

Overdose and Emergency Response

Overdose and when to seek help — Official Regulatory Information for Amide

Domain Official Regulatory Statements
Documented Manifestations Overdose may present with signs of Central Nervous System (CNS) depression, which can range from drowsiness to coma, along with cardiovascular effects such as bradycardia (slow heart rate) and hypotension (low blood pressure). Neurological signs like extrapyramidal symptoms (including acute dystonic reactions) are also documented in regulatory reports.
Life-Threatening Risks The primary severe risk is dose-dependent QT interval prolongation, which is officially known to potentiate the risk of serious ventricular arrhythmias, specifically Torsades de Pointes (TdP). Fatal outcomes, including cardiac arrest, have been reported. The potential for Neuroleptic Malignant Syndrome (NMS) is a further serious outcome to monitor.
When to Seek Urgent Help Immediate medical attention is required for any suspected overdose. Additionally, emergency services must be contacted immediately if severe signs, such as those indicative of NMS (e.g., unexplained hyperthermia or muscle rigidity), are observed.
Management & Monitoring No specific antidote is known for Amide overdose. Treatment is restricted to being symptomatic and supportive. Regulatory documents mandate continuous cardiac monitoring (ECG) until the patient is fully recovered, with recommendations for observation for a minimum of 16 hours following a large ingestion.

Connection to the overall overdose profile: Regulatory documents explicitly define the Amide overdose profile by focusing on serious cardiotoxicity and CNS manifestations, which mandates immediate medical intervention. Since no specific antidote is known, official guidance stresses that care is symptomatic and supportive, focused critically on continuous ECG monitoring to manage the documented risk of severe ventricular arrhythmias. Caution is also noted for the elderly due to the potential for increased sedation and hypotension, and for patients with renal impairment due to altered elimination.

Therapeutic Uses of Amide

Amisulpride is commonly used across therapeutic domains, supporting symptomatic management in both mental health and acute physical distress contexts. Its clinical relevance spans the management of long-term thought disorders and the relief of sudden, severe gastrointestinal symptoms.

It is commonly used for managing conditions characterized by periods of heightened symptoms, specifically schizophrenic disorders and certain affective symptoms like those seen in dysthymia. It also provides essential support in the management of severe nausea and vomiting, particularly in the postoperative setting.

The medication plays a role in managing and easing the overall symptom load, which may assist with maintaining a sense of stability when symptoms are more noticeable and supports general well-being during symptomatic phases. It is relevant for managing symptom clusters that may become intense or disruptive, including active manifestations like delusions, hallucinations, apathy, and social withdrawal.

“The goal of management is to ease the patient’s overall symptom load, which contributes to improved day-to-day comfort during symptomatic periods.”


Quick Fact: Relief for Severe Nausea and Psychotic Symptoms


Regulatory References

  1. NIH LiverTox overview

Eligibility and Restrictions for Use

Who can and cannot use Amide?

Amide (Amisulpride) is officially established for use in adult populations under standard labeled conditions. Regulatory documents define specific absolute exclusions and conditional use requirements based on patient characteristics and pre-existing conditions.


Absolute Contraindications (Must Not Use)

The medicine is formally contraindicated and must not be used by patients with a known hypersensitivity to amisulpride, those diagnosed with prolactin-dependent tumors or phaeochromocytoma, and women who are lactating. Use is also strictly prohibited in children up to puberty due to a lack of established safety and efficacy data.


Conditional Use and Restrictions

Amide is not recommended for use in adolescents (under 18) for the antipsychotic indication. Older adult patients require particular caution. Severe renal impairment is an absolute contraindication, while moderate renal impairment requires use to be conditional upon specific dose modifications. For pregnant women, use is generally not recommended, and close monitoring is required for patients with comorbidities like diabetes mellitus or a history of epilepsy.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documentation structures the interaction profile of Amide (Amisulpride) around two primary concerns: the risk of additive cardiac toxicity and the potentiation of central nervous system (CNS) effects. All interaction information is derived from government-approved labeling.

Formally Contraindicated Combinations

The co-administration of Amide is contraindicated with certain drug classes due to the high risk of serious cardiac events, primarily Torsade de Pointes, or reciprocal antagonism of therapeutic effects. These combinations include:

  • Medicines that induce Torsade de Pointes: This extensive class includes, but is not limited to, Class Ia and Class III antiarrhythmics, certain neuroleptics (e.g., Thioridazine), and other agents like Pentamidine.
  • Dopamine Agonists (including Levodopa): Co-use results in the reciprocal antagonism of effects.

Pharmacodynamic and Exposure-Modifying Interactions

Interaction Type Interacting Substance/Class Official Outcome/Restriction
CNS Effects Enhancement CNS Depressants (e.g., Narcotics, Benzodiazepines) Enhanced central depressant effects and decreased alertness are documented.
Substance-Specific PD Alcohol Amide may enhance the central effects of alcohol; co-use is formally not recommended.
Cardiac Risk Augmentation Bradycardia-Inducing Agents, Hypokalaemic Agents Not recommended due to increased risk of Torsade de Pointes.
Exposure Modification Clozapine Co-administration is noted to increase the plasma levels of Amide.

Population-Specific Constraints

ECG monitoring is officially recommended for patients with pre-existing cardiac conditions, cardiac conduction disorders, or electrolyte abnormalities (such as hypokalemia or hypomagnesemia) who are taking other medicinal products known to prolong the QT interval.

Mechanism of Action

The pharmacodynamic action of this class of compounds involves selective, concentration-dependent inhibition of voltage-gated sodium channels ( Na v), primarily localized within the axonal membranes of sensory and motor neurons.

The agent, often in its ionized form, binds reversibly within the Na v channel's intracellular pore. This binding interaction stabilizes the channel in the inactivated state, preventing its recovery to the resting state and subsequent opening.

At the cellular level, this inhibitor action prevents the rapid influx of Na^+ ions required for the ascending phase of the action potential. This blockage prevents nerve membrane depolarization and interrupts the propagation of the nerve impulse along the axon. The intracellular consequence is a disruption of excitability in the targeted neural tissue. The system-level physiological consequence is a localized, reversible modulation of afferent and efferent neuronal signaling.

Dosage and Administration Information

How to Use Amide: Administration and Use

Amide (Amisulpride) is administered through distinct routes and schedules defined by its therapeutic context. For the management of long-term thought stabilization, the medication is typically administered via the oral route as a tablet. Doses are individualized but generally range from 50 mg/day to 800 mg/day, with a maximal daily dose that should not exceed 1200 mg. Oral administration exceeding 400 mg per day must be taken as two divided doses, while lower doses may be taken once daily. The oral tablet should preferably be taken before meals.

Initial treatment for acute episodes may utilize an intramuscular injection before transitioning to the oral form. Separately, Amide is utilized via the intravenous (IV) route as a single injection for antiemetic purposes. The standard regimen for the prevention of postoperative nausea and vomiting (PONV) is a single 5 mg dose given at the time of anesthesia induction, or a 10 mg dose for treating established PONV. The IV solution is administered undiluted and must be infused over a short period of 1 to 2 minutes.

High-level use protocols require specific dose adjustments for certain populations. Patients with moderate kidney impairment, defined as creatinine clearance between 30 and 60 mL/min, must have their oral dose reduced by one-half. Further reduction to one-third of the standard dose is required for severe impairment, and the medication is not recommended for children and adolescents. Discontinuation of high-dose oral therapy should be gradual.

Recent Clinical Evidence

Research evidence / Overview of Studies for Amide (Amisulpride)

Evidence for use in Schizophrenia and Psychotic Disorders

The research foundation for Amide relies primarily on numerous short-term (6 to 12 weeks) and longer-term randomized controlled trials (RCTs), as well as systematic reviews and meta-analyses. These studies were used in research exploring how symptoms change over time in adult patients with conditions characterized by fluctuating or episodic manifestations.

In these trials, researchers primarily monitored outcomes related to symptom intensity or variability. They used standardized scales to measure changes in overall symptom severity and assessed specific symptom axes, including outcomes related to symptom intensity (positive symptoms) and outcomes describing perceived discomfort or activity level (negative symptoms).

Research describes patterns observed during the study periods: specifically, studies monitored changes measured during the short-term intervals. Comparative evidence examining head-to-head outcomes against other treatments is still being accumulated, and findings were heterogeneous across some specific comparisons.

Evidence for use in Postoperative Nausea and Vomiting (PONV)

Amide was evaluated in multiple randomized, double-blind, placebo-controlled trials focusing on its role in research contexts involving prevention of acute or disruptive episodes and as a rescue treatment for patients experiencing acute symptoms following surgery. These studies explored outcomes related to physical discomfort and systemic or functional imbalance.

Studies focused on monitoring a key outcome known as Complete Response. Research describes that this outcome was monitored over a defined time interval of 24 hours post-surgery and monitored the reported incidence of vomiting and the need for subsequent rescue medication in the study populations. Follow-up durations were limited, as the primary research focus centered only on the immediate 24-hour post-surgical window.

What is Still Uncertain About Amide's Research Base

One key area of uncertainty is the long-term characterization of outcomes; evidence is limited and does not fully establish the effects extending significantly past the one-year mark. Additionally, comparative evidence is lacking against the full spectrum of available newer medications. Furthermore, there is limited data for Amide in controlled trials involving pediatric populations for either psychotic disorders or postoperative nausea, and data for other special groups remain insufficient.

Frequently Asked Questions (FAQ)

Common questions about Amide (FAQ)

Q: Is Amide a pain reliever or is it for a chronic condition?

Amide is not classified as a general pain reliever. Official product information indicates that the medication is approved for two distinct purposes: the management of acute and chronic schizophrenic disorders, which are often long-term conditions, and the short-term prevention or treatment of postoperative nausea and vomiting (PONV).

Q: Is Amide a generic drug or is it only available as a brand name?

Amide is the common name for the active ingredient, which is known internationally as Amisulpride. This is the generic name for the drug. It is sold by manufacturers under various brand names, such as Barhemsys (for injection) or Solian (for oral tablets).

Q: Do side effects from Amide typically lessen or go away after the first few weeks?

Official product information indicates that some initial side effects, such as feelings of nervousness, may lessen or resolve as treatment continues. Other effects, particularly those involving movement (extrapyramidal symptoms), are often related to the dosage being used and may be reversible with modifications. However, not all side effects will necessarily diminish over time.

Q: Why do some users report stomach upset or nausea when taking Amide?

Nausea, vomiting, and constipation are all listed as common adverse reactions associated with this medication, according to regulatory documents. These effects occur in approximately 1 to 10 out of every 100 patients. The specific biological reason (mechanism) for this common side effect is not typically detailed in general patient information.

Q: Is a slight rash or minor skin irritation a normal reaction to Amide?

Official safety information states that skin reactions are uncommon or rare. Reported adverse effects include urticaria (hives) and angioedema (swelling beneath the skin). Increased sensitivity to sunlight, known as photosensitivity, has also been noted in post-marketing reports.

Q: How quickly does it usually take for Amide to start showing its intended effect?

The medication is absorbed quickly after an oral dose, with a peak concentration in the blood achieved within about one hour. However, when used for chronic conditions, the full therapeutic benefits of Amide may take several weeks of consistent use to become fully noticeable.

Q: What is the general guidance if a person misses a scheduled dose of Amide?

Regulatory patient information generally describes taking the missed dose as soon as it is remembered, unless it is almost time for the next scheduled dose. A key instruction in the official labeling is that a double dose must never be taken to compensate for a missed one.

Q: Can Amide be taken for a long period of time, or is it intended for short-term use?

Official regulatory documents confirm that Amide is approved for the treatment of both acute and chronic schizophrenic disorders, which often require long-term treatment. Conversely, its indication for managing postoperative nausea and vomiting is specifically intended as a short-term, single-dose treatment.

Q: Is there a warning about Amide use for people with pre-existing kidney or liver problems?

Regulatory warnings exist regarding both the kidney and liver. The medication is eliminated primarily through the kidneys, and severe kidney disease is a contraindication for use. Additionally, cases of severe hepatotoxicity (liver damage) have been reported. Due to this, the official labeling notes the importance of monitoring for possible signs like jaundice.

Q: Does Amide carry a Black Box Warning or other major safety alerts from regulators?

As a medication belonging to the class of atypical antipsychotics, Amide is subject to regulatory warnings concerning this drug class. Official safety alerts indicate that this class of medication is associated with an increased risk of death when used to treat older adults with mental confusion related to dementia-related psychosis.

Q: Is it normal to feel a temporary headache when first starting a course of Amide?

Official safety documents list headache as a reported adverse effect of Amide. While its frequency can vary, its inclusion in regulatory labeling means it is a known possible effect of the medication.

Q: Does taking Amide affect the results of routine laboratory or blood tests?

The use of Amide may be associated with changes in the results of routine laboratory and blood tests. These changes, noted in official documents, include elevations of liver enzyme levels, alterations in blood cell counts (such as leukopenia), and high blood sugar (hyperglycemia).

Q: What is the difference between Amide and its active metabolite?

The drug's active ingredient, Amide, is not broken down significantly by the liver. Instead, it is primarily responsible for its own pharmacological effects and is mostly excreted either unchanged or as inactive substances. This means that the main medicinal effect comes directly from the drug itself, rather than from a secondary active substance produced in the body.

How should Amide be stored and disposed of?

How to Store and Dispose of Amisulpride

Official storage and disposal instructions are defined by the specific formulation of Amisulpride. All forms of the medicine must be kept out of the sight and reach of children.

Storage and Stability

Formulation Key Storage Requirement Post-Opening Stability
Oral Tablets Store in the original package; some labels specify do not store above 25°C. Up to Expiry Date
Solution for Injection Must be protected from light; keep in the protective carton. Must be administered within 12 hours of removal from carton.
Oral Solution No special storage precautions for unopened product. Must be discarded 60 days after first opening.

Disposal

The regulatory label instructs users to not throw away any medicines via wastewater or household waste. Disposal of unused or expired product must be done in accordance with local requirements, and patients are advised to ask their pharmacist for guidance.

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

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