Vomend

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

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

Overview of Vomend

Property Description
Active ingredient Metoclopramide
Form Solution for Injection (for Vomend product)
Pharmacological class Antiemetic, Prokinetic Agent
General purpose Relieves nausea and vomiting, improves digestive motility
Origin Synthetic (Substituted benzamide)

What Is Vomend and What Is Its General Purpose?

Vomend is defined as a specific veterinary medicinal product that is clinically recognized for its role in managing gastrointestinal distress, classified as a dual-action agent: an antiemetic and a prokinetic agent. Its general purpose is to provide relief from nausea and vomiting by controlling the central reflex that initiates sickness while simultaneously improving the mechanical movement of contents through the upper gastrointestinal tract. This dual mechanism is intended to alleviate the feeling of illness while addressing physical issues like reduced gastro-intestinal motility and stomach stagnation, thereby coordinating muscle contractions and supporting proper digestion. Metoclopramide is utilized for managing vomiting and gastrointestinal motility disorders as part of its therapeutic application.


What is the Active Ingredient in Vomend?

The sole active ingredient in Vomend is Metoclopramide (INN), a synthetic compound chemically classified within the substituted benzamide group. Metoclopramide serves as the single-ingredient component responsible for the drug’s dual activity and is typically formulated as the hydrochloride monohydrate salt. Metoclopramide achieves its antiemetic effects by acting as a Dopamine receptor antagonist centrally, in the chemoreceptor trigger zone. This means the medication works by blocking signals in the brain that would otherwise trigger the sickness response. While the active substance is generally available across various dosage forms such as tablets and oral solutions, Vomend itself is uniquely formulated and marketed specifically as a sterile solution for injection for its target patient group, facilitating rapid administration via the parenteral route using an aqueous vehicle.

Regulatory References

  1. Metoclopramide on the Essential Medicines List
  2. [WHO Essential Medicines List]

What side effects are possible with Vomend?

Possible side effects and safety information

The safety profile for the active ingredient in Vomend, metoclopramide, is characterized by potential effects on the nervous system and, rarely, the cardiovascular system, as documented in official regulatory documents. Adverse reactions are classified by frequency based on official standards.

Officially Classified Adverse Reactions

Adverse effects are documented across several system-organ classes, including the Nervous System, Psychiatric Disorders, Endocrine System, and Cardiovascular System.

Frequency Classification Examples of Documented Effects
Very Common Somnolence (drowsiness)
Common Diarrhoea, asthenia (weakness), extrapyramidal disorders, restlessness, depression, parkinsonism
Uncommon Bradycardia (slow heart rate), confusion, hyperprolactinaemia, hypotension, hypersensitivity
Rare Seizures, hallucinations
Not Known Circulatory collapse, shock, Methemoglobinemia, cardiac arrest

Serious Adverse Reactions and Safety Patterns

Regulatory documents highlight the risk of Tardive Dyskinesia (a potentially irreversible involuntary movement disorder) which is primarily associated with prolonged use of the medicine. Due to this risk, treatment duration is typically limited to no more than three months. Acute Extrapyramidal Symptoms (EPS) are also officially documented, which may appear at the start of treatment, particularly in children and young adults.

Serious cardiovascular events, including circulatory collapse and severe bradycardia, have been reported, primarily following rapid intravenous administration of the injection.

Population-Specific Safety Considerations

The official label requires attention to specific patient populations. Older adults may be more susceptible to certain neurological adverse effects, and the risk of tardive dyskinesia is associated with advanced age. For patients with renal impairment or severe hepatic impairment, regulatory documents mandate a dose reduction to account for decreased drug clearance and to mitigate the risk of adverse reactions. The medicine is formally contraindicated in individuals with phaeochromocytoma, gastrointestinal haemorrhage, obstruction, or a history of tardive dyskinesia.

Overdose and Emergency Response

Vomend Overdose and When to Seek Help

Overdosage with metoclopramide, the active ingredient in Vomend, may be associated with manifestations affecting the central nervous system and gastrointestinal tract. Documented clinical signs include drowsiness, confusion, disorientation, diarrhea, and Extrapyramidal Reactions (EPR), which involve involuntary muscle movements. In cases involving unintentional misadministration in infants and children, overdose has been reported to cause seizures and lethargy.

Immediate medical help is required if a suspected overdose has led to severe symptoms such as collapse, difficulty breathing, or seizures. The official guidance from regulatory authorities states to seek immediate medical attention and contact the poison control center.

Life-threatening outcomes that may be associated with metoclopramide overdose include the potential for Neuroleptic Malignant Syndrome (NMS) and the risk of Methemoglobinemia, particularly documented in neonates. Treatment for overdose is primarily symptomatic and supportive. While there is no known specific antidote for metoclopramide toxicity itself, treatments such as anticholinergic drugs may be used to manage the EPR symptoms. Overdose symptoms are typically self-limiting and are often reported to resolve within 24 hours. Official prescribing information notes that dialysis is not expected to be an effective method of drug removal.

Therapeutic Uses of Vomend

What Vomend Treats: Main Uses and Benefits

Vomend is commonly used to provide symptomatic relief, assisting with the manifestations of nausea and vomiting (emesis). It is applied across domains where additional symptomatic support is needed during acute or episodic changes, which helps to manage the risk of fluid loss and subsequent dehydration.


This medication helps address symptom clusters that may be linked to organ-specific functional stress in the digestive tract. It is relevant for easing symptoms like gastric discomfort and loss of appetite, which may be associated with functional stability challenges. Vomend is commonly used across conditions presenting with acute episodes of vomiting, conditions where symptoms are linked to organ-specific functional stress, and for managing digestive symptoms that complicate systemic illnesses like chronic kidney disease.

“Supportive relief from symptoms associated with vomiting is commonly used to assist in maintaining patient comfort and stability.”


Vomend is relevant when short-term symptomatic assistance is needed in clinical settings, such as managing vomiting associated with certain drug therapies. This supportive use provides support that contributes to easing the overall symptom load and helps improve comfort during symptomatic periods.

Quick Fact: Relief for Nausea and Vomiting Vomend is relevant for managing symptoms that interfere with daily functioning, and is commonly used to help with episodes of nausea and vomiting.

Regulatory References

  1. FDA DailyMed label for Maropitant Citrate

Eligibility and Restrictions for Use

The official regulatory profile for Vomend (Metoclopramide) strictly defines the populations for whom use is permitted, restricted, or prohibited, based on established clinical and physiological criteria.

Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed Dogs and Cats are the approved target species.
Populations for whom use is contraindicated Use is strictly prohibited for animals with gastrointestinal perforation or obstruction. A contraindication also applies in cases of known hypersensitivity to Metoclopramide or any excipient.
Condition-specific eligibility rules Dosage must be adapted for patients with renal insufficiency or hepatic insufficiency. Use must be avoided in animals with epilepsy or seizure disorders, pheochromocytoma, and in dogs experiencing pseudopregnancy.
Age and Reproductive Status Use during pregnancy and lactation is conditional, requiring a formal benefit/risk assessment by the prescriber. Dosage requires careful observation in cats and small breed dogs.

Summary of Regulatory Profile Regulatory documents define eligibility by imposing an absolute ban on patients with compromised GI integrity. The profile mandates restricted, conditional use for patients with organ-function impairment (hepatic or renal insufficiency) and specific neurological or endocrine disorders. For reproductive states, eligibility is conditional, requiring a formal assessment to ensure the expected benefit justifies the use.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define specific co-administration constraints based on the potential for altered drug effects or increased risk of adverse events when Vomend (metoclopramide) is used concurrently with certain medications.


Pharmacodynamic and Risk-Based Interactions

Interacting Product Category Official Constraint/Consequence Mechanistic Basis (Regulatory Statement)
Anticholinergic Drugs (e.g., Atropine) Avoid co-administration in cases of gastritis; otherwise, use is not contraindicated. May counteract the effects of metoclopramide on gastrointestinal motility.
Neuroleptics (Phenothiazines, Butyrophenones) Concurrent use increases risk. Increased risk of extrapyramidal effects.
Central Nervous System (CNS) Depressants Use caution; lowest dosage advised. Can potentiate the action of CNS depressants, increasing the risk of excessive sedation.

Procedural and Compatibility Restrictions

Official labeling mandates that Vomend must not be mixed with other medicinal products unless specific compatibility studies confirm the safety of the mixture. This is a critical procedural restriction to prevent physical or chemical incompatibility.

Mechanism of Action

Central Neural Signal Suppression

The drug functions as an antagonist (blocker) at Dopamine D2 receptors primarily located in the brain's Chemoreceptor Trigger Zone (CTZ). This interaction prevents the binding and activation of dopamine, resulting in a suppression of the central trigger signals that initiate the reflex. This mechanism modulates neural signaling patterns characteristic of the CTZ pathway.

Modulating Upper Gastrointestinal Motility

In the walls of the gastrointestinal tract, the drug acts as an agonist (activator) at Serotonin 5-HT4 receptors. This targeted effect enhances the release of acetylcholine, thereby increasing the force and coordination of the muscle contractions in the stomach and small intestine. This action increases the speed of gastric emptying and enhances forward peristaltic flow through the upper digestive tract.

Dual Mechanistic Regulation

The overall physiological effect is achieved through this dual mechanism: concurrently inhibiting central signaling pathways while enhancing peripheral muscle coordination. This integrated action targets and modulates two distinct biological systems, influencing the observed physiological response.

Dosage and Administration Information

How to Use Vomend

The usage of Vomend (Metoclopramide Solution for Injection) follows established administration protocols.

Administration Protocol

The medication is administered via the parenteral route, for both Intravenous (IV) and Intramuscular (IM) injection. Standard adult dosing regimens define a single dose of 10 mg, with a strict ceiling on the maximum recommended daily dose of 30 mg.

Administration frequency is constrained by a mandatory minimal interval of 6 hours between administrations, even if a dose is rejected, to manage overall exposure. For the IV route, the dose must be delivered as a slow bolus over at least 3 minutes.

Duration and Adjustments

Treatment with the injectable solution is designated as short-term use. The maximum duration of injectable use is typically limited to 5 days for most applications, and to 48 hours for established postoperative nausea and vomiting (PONV). Clinical guidelines stipulate that use should transition to an oral or rectal formulation as soon as clinically possible.

Dosage adjustments are required for certain populations. Patients with moderate to severe renal impairment or severe hepatic impairment must have their dose reduced by 50% or more, depending on the degree of organ function compromise. These instructions define the standardized, time-bound, and dose-controlled administration approach.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Vomend (Metoclopramide)

This section describes the types of scientific research conducted on the active ingredient in Vomend, Metoclopramide. It outlines what studies examined, how findings were described in the research, and what aspects remain unclear, according to authoritative regulatory and peer-reviewed sources.


Evidence for Use in Managing Diabetic Gastroparesis

Metoclopramide was studied in research involving adults diagnosed with diabetic gastroparesis. Research primarily involved short-term Randomized Controlled Trials (RCTs) and crossover studies, used in research exploring how symptoms change over time. These studies explored patient-reported outcomes, focusing on how specific gastrointestinal symptoms were measured over the study period. Studies documented the measurements of symptom change observed in the study populations over defined periods, generally lasting 4 to 12 weeks. Long-term outcomes beyond 12 weeks remain uncertain due to limited data.

Evidence for Use in Acute Nausea and Vomiting

Research examined Metoclopramide in clinical settings characterized by acute or disruptive episodes of nausea and vomiting, such as following surgery or associated with emetogenic chemotherapy. Studies monitored outcomes describing episodic or acute changes, primarily focusing on the ability to achieve complete control of vomiting and the reported change in nausea intensity. The evidence quality varies based on the specific cause of the vomiting, and comparative evidence is lacking against some newer treatments.


Research Gaps and Remaining Uncertainty

The evidence quality varies across indications. Follow-up durations were limited across major clinical trials, which focused on short-term outcomes. Research regarding the sustained measurements of outcomes of continuous or extended use for managing chronic conditions has been a significant limitation. Data for specific patient groups, such as infants with GERD, show inconsistent outcomes, and sample sizes were modest in some studies evaluating use in older adults. Comparative evidence is lacking in some areas against contemporary alternative therapies.

Key Studies & References

  1. Metoclopramide in the treatment of diabetic gastroparesis
  2. Nausea and Vomiting Related to Cancer Treatment (PDQ®)–Health Professional Version
  3. Reglan - Drug Summary (Includes Pediatric GERD trial data and dosing limits)

Frequently Asked Questions (FAQ)

Common questions about Vomend (FAQ)

Q: What is Vomend used for?

A: Vomend is an official product name for the medicine rolapitant, which belongs to a class of medicines called NK1 receptor antagonists. According to the official product information, it is indicated for preventing delayed nausea and vomiting associated with certain types of chemotherapy.

Q: How does Vomend work to prevent nausea and vomiting?

A: Studies and official information indicate that Vomend works by blocking a substance in the body called substance P, which is a chemical that plays a role in causing nausea and vomiting. By blocking its receptor, known as the NK1 receptor, the medicine helps prevent these symptoms from developing after chemotherapy.

Q: Can Vomend be used for nausea that is not caused by chemotherapy?

A: Regulatory documents state that Vomend is specifically indicated for the prevention of delayed nausea and vomiting associated with emetogenic chemotherapy. Its use for other causes of nausea or vomiting is not included in the official approved indications.

Q: Can Vomend be taken with or without food?

A: According to the official product information, Vomend can be taken with or without food. This indicates that administration is not dependent on meal times.

Q: Does Vomend make you drowsy or sleepy?

A: Official information indicates that common side effects observed in clinical studies include general feelings of tiredness, known as asthenia. Official prescribing information notes asthenia (feelings of tiredness) as a common side effect in clinical studies.

How should Vomend be stored and disposed of?

Storage and Disposal Requirements for Vomend

The storage and handling of Vomend solution for injection must strictly follow regulatory guidance to ensure product stability and safety.


  • Storage Conditions: The product must be stored in the original package to ensure it is protected from light. It is specified that the solution must not be frozen.
  • Stability Limits: The shelf life of the unopened medicinal product is two years. After the vial is first opened, the solution must be used within 28 days.
  • Child Safety: Vomend must be kept out of the sight and reach of children.

  • Disposal Instructions: Unused or expired Vomend should not be disposed of via wastewater. Disposal must adhere to local requirements and applicable national collection systems, such as take-back schemes, for proper environmental handling.

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

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