Gastromotil

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Gastromotil

What is Gastromotil?

Gastromotil is a pharmacological treatment designed to manage symptoms associated with delayed gastric emptying and gastrointestinal motility disorders. It belongs to a class of medications known as dopamine antagonists, specifically acting as a peripheral dopamine receptor blocker.

Primary Mechanism

The active component in Gastromotil works by facilitating the movement of food through the digestive tract. It targets the muscles of the lower esophagus and stomach to increase coordination and contraction strength. By accelerating the transit of contents from the stomach into the small intestine, it helps reduce the sensation of fullness and pressure.

Therapeutic Use

This medication is primarily utilized to address physical discomforts related to slow digestion. Its application is common in managing a variety of upper gastrointestinal symptoms, including:

  • Nausea and Vomiting: Reducing the urge to vomit by stabilizing gastric movement.
  • Early Satiety: Addressing the feeling of being full shortly after starting a meal.
  • Bloating: Relieving the sensation of abdominal distension caused by retained food or gas.
  • Epigastric Pain: Managing discomfort or burning localized in the upper abdomen.

Unlike some other medications in its class, Gastromotil is designed to act primarily on the peripheral nervous system, focusing its effects on the digestive system rather than the central nervous system.

Regulatory References

  1. Domperidone (Motilium) Information
  2. NIH Domperidone Information
  3. Domperidone (StatPearls)

What side effects are possible with Gastromotil?

Possible Side Effects and Safety Information

Official regulatory documents define the safety profile of Gastromotil (Domperidone) by classifying adverse reactions and establishing critical constraints for use. The most serious concern documented by regulatory agencies relates to cardiovascular risks.

Officially Documented Adverse Reactions

The following effects are listed in regulatory safety documents, grouped by their classification or the body system involved:

Classification/System Examples of Listed Effects
Serious Adverse Reactions Sudden cardiac death, Serious Ventricular Arrhythmias (including QTc prolongation), Convulsions, Anaphylactic reaction, Extrapyramidal disorders.
Uncommon Effects Diarrhea, Headache, Somnolence (sleepiness), Anxiety, Asthenia (feeling weak), Rash, Pruritus.
Reproductive/Endocrine Galactorrhea, Gynecomastia (breast enlargement in men), Amenorrhea (absent periods), Breast tenderness.

Key Safety Restrictions and Risk Factors

The medicine is subject to several safety restrictions based on documented risk factors:

  • Contraindications: Gastromotil is strictly contraindicated in individuals with moderate to severe hepatic impairment, known pre-existing cardiac conditions (e.g., congestive heart failure), and significant electrolyte disturbances.
  • Dose and Duration: The risk of serious ventricular arrhythmias is documented to be higher with higher doses (specifically over 30 mg/day) and with longer-term use.
  • Population Specific: Safety warnings note a potentially higher risk of serious heart events in older adults. Dosage frequency requires adjustment in patients with severe renal impairment.

Overall Safety Profile

The regulatory safety profile is defined by the need to manage the documented, rare risk of cardiac complications and to avoid use in patients with specific underlying medical conditions that increase this risk. Official safety notes advise that treatment must be stopped if signs or symptoms associated with cardiac arrhythmia occur.

Overdose and Emergency Response

Overdose and when to seek help

Official regulatory documents require that immediate medical attention must be sought or emergency services must be contacted upon the suspicion of an overdose of Gastromotil (Domperidone).

The officially documented overdose profile is structured around potential severe outcomes and clinical manifestations.

Documented Manifestations Severe Outcomes
Somnolence and Disorientation Ventricular Arrhythmias
Extrapyramidal Reactions (EPS) QT Interval Prolongation
Convulsions and Agitation Life-threatening cardiac risk

These manifestations include central nervous system (CNS) effects such as somnolence, disorientation, and movement disorders like extrapyramidal reactions. CNS-related adverse effects are noted to occur more frequently in infants and children following overdose.

Overdose has been associated with the risk of developing serious ventricular arrhythmias and QT interval prolongation, requiring continuous ECG monitoring and close clinical observation. Treatment is strictly symptomatic and supportive, and official regulatory information states that no specific antidote is known. Management procedures may include the consideration of gastric lavage or administration of activated charcoal.

Therapeutic Uses of Gastromotil

What Gastromotil Treats: Main Uses and Benefits

Gastromotil is commonly used to help with the relief of symptoms of nausea and vomiting. This primary therapeutic benefit is considered relevant for easing symptoms that interfere with daily functioning and become noticeable during episodes of sudden symptom escalation. It is considered relevant for providing short-term symptomatic assistance.


Key Applications and Symptom Support

The medication is applied across domains where additional symptomatic support is needed to address pronounced discomfort, particularly in conditions characterized by periods of heightened symptoms. It is used for managing symptoms associated with acute or episodic changes, often used during phases when symptoms become more noticeable. Gastromotil's role may assist with reducing the overall symptom load when these manifestations are temporarily overwhelming. This approach helps maintain a sense of stability when symptoms are more noticeable.


Symptomatic Focus: Acute Discomfort

Regulatory References

  1. UK Medicines and Healthcare products Regulatory Agency (MHRA) guidance

Eligibility and Restrictions for Use

Gastromotil is subject to strict eligibility rules documented by regulatory agencies due to concerns regarding cardiac risk. It is contraindicated and must not be used by patients with several conditions or in combination with specific medications.

Populations for whom use is Contraindicated

  • Cardiac/Electrical Conditions: Patients who have or have had a prolonged QTc interval (a heart rhythm abnormality), underlying cardiac diseases such as congestive heart failure, or significant electrolyte disturbances (like hypokalaemia or hypomagnesaemia).
  • Hepatic Impairment: Patients with moderate or severe liver impairment.
  • Gastrointestinal Integrity: Patients with conditions where stimulating gut motility is harmful, such as gastro-intestinal hemorrhage, mechanical obstruction, or perforation.
  • Drug Interactions: Patients concurrently taking medicines that are known to prolong the QT interval or potent CYP3A4 inhibitors (which increase the drug's concentration).
  • Other: Patients with a prolactin-releasing pituitary tumour (prolactinoma) or known hypersensitivity to the medicine.

Age and Special Populations

  • Pediatrics: Use is generally not recommended or contraindicated in children under 12 years of age or adolescents weighing less than 35 kg.
  • Elderly: Caution is advised, and a higher risk has been observed in patients over 60 years of age.
  • Pregnancy/Lactation: Use is not recommended unless the expected benefit outweighs the potential hazard. The medicine is excreted in breast milk.

What should I know about interactions with other medicines?

The official interaction profile of Gastromotil (Domperidone) is strictly defined by government regulatory agencies through classifications based on metabolic clearance and cardiac risk.

Contraindicated Combinations

Co-administration is formally prohibited with medicines that pose a serious risk of increasing Domperidone exposure or prolonging the heart's electrical conduction interval (QTc).

  • Potent CYP3A4 Inhibitors: These are contraindicated because this pharmacokinetic interaction significantly reduces the medicine's metabolic clearance. This leads to multi-fold elevated plasma concentrations and substantially increased cardiac risk, as documented for certain macrolide antibiotics (e.g., Erythromycin) and azole antifungals (e.g., Ketoconazole).
  • QT-prolonging Medicines: These are contraindicated due to a pharmacodynamic interaction that results in an additive effect on the QTc interval, thereby increasing the risk of serious ventricular arrhythmias. This category includes certain antiarrhythmics, antipsychotics, and antidepressants.

Other Documented Interactions

  • Gastric Acidity Reducers: Products such as antacids or antisecretory agents are documented to decrease the oral bioavailability of Domperidone. A mandatory timing rule is therefore required in the official label, stating that these products must not be taken simultaneously.
  • Food: Administration of the oral tablet form after a meal results in delayed absorption and a slight increase in total exposure (AUC).

Population-Specific Cautions

Regulatory labels contain restrictions for certain populations where interactions are more clinically significant:

  • Hepatic Impairment: Domperidone is formally contraindicated in patients with moderate or severe liver impairment due to reduced drug clearance and resulting accumulation risk.
  • Renal Impairment: Patients with severe renal impairment require a reduced dosing frequency for repeated administration to prevent drug accumulation, as the drug's elimination half-life is prolonged.

Mechanism of Action

How Gastromotil Works

The mechanism of action for Gastromotil involves Dopamine D2 receptor antagonism in two distinct physiological locations, resulting in prokinetic and anti-emetic pathway modulation.


Influence on Gastrointestinal Motility through Peripheral Antagonism

The molecule blocks Dopamine D2 receptors and D3 receptors primarily located on nerve cells in the wall of the stomach and upper intestine. This mechanistic interaction removes the inhibitory effect of dopamine, which results in an increase in the release of Acetylcholine—the neurotransmitter that stimulates muscle contraction. This action enhances the strength and coordination of peristalsis and increases pressure on the Lower Esophageal Sphincter (LES), resulting in faster clearance of stomach contents.


Interruption of the Vomiting Reflex Signal at the Chemoreceptor Trigger Zone

Gastromotil’s anti-emetic mechanism also stems from D2 receptor antagonism, but this occurs in the Chemoreceptor Trigger Zone (CTZ). The CTZ is a specialized area in the brainstem that monitors chemical signals in the bloodstream. By binding to receptors in this area, the drug reduces the sensitivity of the CTZ to circulating chemical stimuli, thereby interrupting the signaling cascade that initiates the involuntary act of vomiting. This action results from the drug's peripheral selectivity, as the CTZ lies outside the main physiological blood-brain barrier.

Dosage and Administration Information

Official Administration Guidelines for Gastromotil

Gastromotil (Domperidone) is formally designated for use at the lowest effective dose for the shortest duration necessary. The medicine is available for Oral administration (tablets, suspension) and, where licensed, Rectal administration (suppositories).

Usage Component Official Labeled Instruction
Standard Adult Dosing 10 mg per oral dose, taken up to three times daily, with a maximum total dose of 30 mg per day.
Dosing Interval A minimum interval of 8 hours must separate each dose administration.
Timing with Meals Oral forms should be taken 15 to 30 minutes before meals; taking the drug after a meal may delay its absorption.
Treatment Duration The treatment duration is typically restricted to a maximum of seven consecutive days.
Renal Impairment In cases of severe renal impairment, the dosing frequency must be reduced to once or twice daily, dependent on the severity.
Age/Weight Restriction Use of the 10 mg oral dose is generally restricted to adolescents 12 years of age and older who weigh 35 kg or more.
Missed Dose Rule If a scheduled dose is missed, it should be omitted entirely, and the normal dosing schedule resumed. The dose must not be doubled.
Special Handling Oral tablets must be swallowed whole and should not be crushed. Antacids should not be taken at the same time as oral forms.

This official protocol is strictly structured to standardize the use of the medicine, clearly defining the maximum dosage, minimum timing, and duration parameters required for its short-term utilization.

Recent Clinical Evidence

Research evidence / Overview of studies for Gastromotil

Evidence for Use in Acute Nausea and Vomiting

Research examining Domperidone in the context of acute feelings of sickness has involved various short-term Randomized Controlled Trials (RCTs) and multicenter studies. These research scenarios focused on adult populations experiencing episodic or acute manifestations of nausea and vomiting. Studies explored how symptoms evolved in the observed populations during the study period.

Trials were designed to examine short-term symptom changes, comparing those receiving the medicine against those receiving a placebo. Findings described changes observed in the studies related to symptoms within the first few days of use. Research contributes to understanding short-term changes that were measured using patient-reported outcomes describing perceived discomfort.

What remains uncertain is the durability of these patterns. Long-term effects are not fully established, as follow-up durations were limited in these acute trials. There is also limited information for long-term outcomes for individuals who use the medicine for extended periods.


Research in Chronic Gastrointestinal Motility Disorders

For conditions involving persistent issues like delayed stomach emptying, known as gastroparesis, research evaluated Domperidone in the context of conditions characterized by functional limitations. The evidence base includes open-label trials and retrospective observational studies, which often focused on adult patients whose symptoms were refractory (meaning previous standard care approaches had been unsuccessful).

Studies monitored outcomes related to systemic or functional imbalance over observation periods that were typically medium-term (e.g., eight weeks). Research monitored measurements in specific symptom scores, such as the Gastroparesis Cardinal Symptom Index, evidence contributes to understanding symptom evolution in these highly specialized populations.


Evidence for Use in Pediatric Populations

Research for conditions characterized by acute or disruptive episodes in younger individuals has involved very short-term, double-blind Randomized Controlled Trials (RCTs). These studies were concentrated on pediatric subjects experiencing acute vomiting, most often linked to acute gastroenteritis. The findings from these pediatric trials have been mixed. Some studies reported measurements suggesting a particular pattern of symptom evolution, while other research described patterns where there was little difference observed compared to the control group.


Evidence Quality and Areas of Uncertainty

For acute nausea and vomiting in adults, the evidence largely describes short-term measurements. However, for use in conditions where symptoms may vary in intensity, the existing studies have often been too small or too limited in duration.

Areas where research data remain insufficient include outcomes for long-term, repeated use. Furthermore, findings were mixed in pediatric research, indicating a need for more consistent and definitive data. The overall evidence base highlights what is known—and what is still uncertain. The study results reflect the specific conditions under which they were conducted and research does not determine whether an individual will respond similarly.

Key Studies & References

  1. Domperidone for nausea and vomiting: lack of efficacy in children; reminder of contraindications in adults and adolescents (MHRA/GOV.UK Update)
  2. A systematic review of the efficacy of domperidone for the treatment of diabetic gastroparesis
  3. CARDIAC SAFETY AND CLINICAL EFFICACY OF DOMPERIDONE USE IN GASTROPARESIS USING AN FDA APPROVED IND PROTOCOL: A PROSPECTIVE 11-YEARS STUDY

Frequently Asked Questions (FAQ)

Common questions about Gastromotil (FAQ)


Q: How quickly should I expect Gastromotil to start working?

Official documentation indicates that the active ingredient, domperidone, reaches its highest concentration in the blood within approximately 30 to 60 minutes after taking an oral dose. This concentration curve suggests when the medicine's effects are typically beginning.


Q: How long does the effect of one dose of Gastromotil typically last?

Studies and official product information indicate that the half-life of the active ingredient is generally around 7 to 9 hours in healthy individuals. The reported half-life is aligned with the need for a specific time interval between doses, as described in administration guidelines.


Q: Is Gastromotil the same as other common stomach medicines like omeprazole or famotidine?

No. Official documents describe Gastromotil as a prokinetic agent and a dopamine antagonist, meaning it primarily helps stimulate movement in the digestive tract. This action is different from medicines like omeprazole or famotidine, which are used to reduce stomach acid.


Q: Why would a doctor prescribe Gastromotil instead of just a regular medicine for heartburn?

Official regulatory guidance states that Gastromotil is formally authorized for the relief of nausea and vomiting. It is not authorized to treat general conditions like heartburn or acid reflux, which are the primary uses of general acid-reducing medicines. Its use is targeted specifically at symptoms related to impaired stomach movement.


Q: Is Gastromotil available over the counter?

The availability status varies by country. In some regions, it is a prescription-only medicine, while in others, it may be available without prescription under specific safety controls by a pharmacist.


Q: Is Gastromotil approved for children to use?

Regulatory documents state that Gastromotil is generally no longer authorized for use in children under 12 years of age or those weighing less than 35 kg. Regulatory documents indicate that use is generally for adolescents 12 years of age or older who meet specific weight criteria.


Q: Are there different strengths or formulations of Gastromotil?

Yes, regulatory documents describe that the active ingredient is available in different strengths, such as 10 mg tablets, and different forms, including oral suspensions and suppositories.


Q: Is Gastromotil safe to use for a long period of time?

Official warnings note that the documented risk of serious cardiac side effects may be higher with longer-term use. Official regulatory labels specify that the medicine is to be used for the shortest possible duration, which is typically restricted to a maximum of seven consecutive days.


Q: Is it true that Gastromotil can cause hormone-related side effects?

Yes. The active ingredient can cause a temporary increase in the hormone Prolactin. This effect is responsible for certain side effects listed in official documents, such as galactorrhea (unexpected milk production) and gynecomastia (breast enlargement in men).


Q: Can Gastromotil cause drowsiness or affect driving?

Official safety documents list Somnolence (sleepiness) as an uncommon side effect. Official safety documents contain a warning that if feelings of dizziness or sleepiness occur, activities such as driving or operating machinery should be avoided.


Q: Can I take Gastromotil if I am already taking a blood pressure medicine?

The main caution involves combining Gastromotil with medicines that prolong the QT interval or affect the CYP3A4 enzyme. Official guidance emphasizes the importance of reviewing all concurrent medications, including those for blood pressure, to ensure they do not carry QT-prolonging effects or cause CYP3A4 inhibition.


Q: Does Gastromotil interact with herbal supplements like St. John's Wort?

Regulatory documents list several drug interactions involving the CYP3A4 enzyme that clears the medicine from the body. Because St. John's Wort can affect the CYP3A4 enzyme, it may have an impact on Gastromotil levels, which is noted as a potential interaction in official guidance.


Q: Why is it recommended to take Gastromotil before meals?

Official documents state that the medicine should be taken before a meal because taking it after a meal may cause a delay in the absorption of the active ingredient. Taking it as directed helps ensure the medicine is absorbed efficiently.


Q: What is the connection between Gastromotil and dopamine receptors?

Gastromotil is formally described as a Dopamine D2 receptor antagonist. The medicine's function is to block (antagonize) these receptors in the gastrointestinal tract and the brain's vomiting center to produce its prokinetic (motility-enhancing) and anti-emetic (anti-sickness) effects.


Q: Is Gastromotil meant to be taken regularly or only when symptoms occur?

Official dosing guidelines describe a standard regimen of up to three times daily for a short-term duration. The standard regimen described in official dosing guidelines involves taking the medicine up to three times daily for a short-term duration to manage acute symptoms.


Q: Can Gastromotil help with stomach bloating?

Regulatory reviews have concluded that Gastromotil should no longer be authorized to treat isolated symptoms such as bloating or other general stomach discomfort. Its formal authorization for use is limited to the management of nausea and vomiting.


Q: Is Gastromotil a prescription-only medicine?

The prescription status varies by country. While it is a prescription-only medicine in some regions, it may be available as an over-the-counter medicine in others, often with pharmacist consultation and limitations on quantity.


Q: What should someone do if they suspect a serious but rare side effect from Gastromotil?

Official safety warnings state that treatment must be stopped immediately if signs of heart rhythm abnormality or other serious adverse events occur. The official warning requires immediate cessation of treatment, and regulatory guidance instructs users to seek prompt medical attention.


Q: Do men and women experience different side effects from Gastromotil?

Official documentation lists certain side effects, such as gynecomastia (breast enlargement) for men and amenorrhea (absent periods) for women, which are reflective of the different biological impact of the medicine.


Q: Is the effectiveness of Gastromotil consistent across all patient groups?

Official reviews of clinical research indicate that findings were mixed in certain groups, such as children under 12 years of age, leading to the current restriction of use in that population. The evidence base includes mixed findings in certain groups, such as children under 12, which led to restrictions in use for that population.


Q: How do regulatory agencies describe the benefit-risk profile of Gastromotil?

Regulatory agencies have concluded that the benefit-risk profile is considered positive under strict conditions, which require use to be limited to authorized indications and avoidance in high-risk patients. This conditional conclusion is based on managing the documented cardiac risks.


Q: Can Gastromotil cause a dry mouth?

Yes, official patient information describes dry mouth as a common side effect of Gastromotil.


Q: Is the use of Gastromotil restricted in any patient populations?

Yes, the use is restricted (contraindicated) for patients with heart problems, moderate or severe liver impairment, and significant electrolyte disturbances. Use is also restricted in children under 12 or those weighing less than 35 kg.


Q: What is the maximum amount of time Gastromotil is typically prescribed for?

The regulatory duration of treatment should generally not exceed seven consecutive days. This restriction is in place to manage the documented risk profile of the medicine.


Q: Does taking Gastromotil affect lab test results?

The medicine can cause an increase in the hormone Prolactin, which can be measured in a lab test. However, official documents do not generally specify interference with standard lab test panels, so the impact is specific to the Prolactin level.


Q: Does Gastromotil have any known interaction with alcohol?

While official core regulatory labels may not list alcohol as a formal contraindication, patient information documents note that alcohol can potentially worsen side effects such as feeling sleepy. Therefore, caution is generally recommended.

How should Gastromotil be stored and disposed of?

Storage and Disposal Conditions for Gastromotil

Official regulatory labeling dictates specific storage and disposal requirements for Gastromotil (domperidone) to ensure its stability and safe handling.

Required Storage Conditions

Requirement Specific Condition
Temperature Store below 25°C (77°F).
Protection Keep in the original container, protected from light and moisture.
Prohibitions Do not refrigerate or freeze.
Child Safety Keep out of the sight and reach of children.
Stability Do not use the medicine after the labeled expiry date (EXP).

Disposal of Unused Medicine

Expired or unused Gastromotil must not be discarded in household trash or poured down a drain (wastewater). Disposal must strictly adhere to local requirements for pharmaceutical waste. Individuals should consult a pharmacist for the proper procedure to safely dispose of the medicine.

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

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