Cirulan

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Cirulan

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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 Cirulan

Property Description
Active ingredient Metoclopramide hydrochloride (Metoclopramide Hcl)
Form Tablet, oral solution, orally disintegrating tablet (ODT), and sterile injection
Pharmacological class Prokinetic agent and Antiemetic agent
Origin Synthetic

What Kind of Medicine is Cirulan?

Cirulan is a synthetic, single-ingredient pharmaceutical containing Metoclopramide hydrochloride (Metoclopramide Hcl). This compound places it in the pharmacological class of both prokinetic agents and antiemetic agents. It is used for its effectiveness in controlling nausea and vomiting across various clinical contexts. For the patient, this means the medicine is broadly purposed for providing relief from feelings of sickness. Metoclopramide is the generic name for this compound, and its mechanism relies on modulating neurochemicals, notably acting as a Dopamine D2 receptor antagonist in the central nervous system.


Composition and Available Forms

The active entity, Metoclopramide Hcl, is the core component, paired with appropriate excipients to create multiple finished forms for patient flexibility. The medication is available in solid oral preparations like standard tablets and fast-acting orally disintegrating tablets (ODTs), alongside liquid oral solutions and sterile injection solutions. The ODT form provides an alternative for patients who may have difficulty swallowing. The medication supports oral, intramuscular, or intravenous routes of administration, accommodating various patient needs and circumstances where immediate effect is required.


General Purpose and Action

The overall purpose of Cirulan is to restore comfortable upper gastrointestinal function by leveraging its dual action. Its general benefit is derived from stimulating the muscular contractions of the stomach to ensure quicker emptying. Simultaneously, it works to block the neurochemical signals in the brain that trigger the vomiting reflex. By addressing both the physical stagnation in the gut and the central stimulus for sickness, the medication helps reduce discomfort caused by slow motility and provides control over the emetic response.

What side effects are possible with Cirulan?

Possible Side Effects and Safety Information

The official safety profile of Cirulan (metoclopramide hydrochloride) details adverse reactions classified by frequency and affected physiological system, as documented by government regulatory authorities.


Frequency and System-Specific Reactions

The most frequent adverse reactions, often documented as Very Common or Common in regulatory labeling, are primarily associated with the Nervous System and Psychiatric Disorders. These include drowsiness, restlessness, fatigue, lassitude, and depression. Diarrhoea is also listed as a common gastrointestinal effect. Reactions classified as Uncommon may include hypersensitivity.

Serious Safety Considerations

The medicine is associated with a risk of serious, involuntary movement disorders. The regulatory profile highlights Extrapyramidal Symptoms (EPS), which may occur at the start of treatment or after a single dose, and Tardive Dyskinesia (TD). TD is a serious, potentially irreversible, movement disorder whose risk increases with the duration of treatment and total cumulative dose. Treatment duration is generally limited to 12 weeks to mitigate this risk. Other serious reactions include Neuroleptic Malignant Syndrome (NMS), Methemoglobinemia, and cardiovascular events such as cardiac arrest or severe bradycardia, particularly noted with intravenous administration.


Population and Duration Notes

The official labeling includes safety considerations for specific populations. Older adults face an increased risk of potentially irreversible Tardive Dyskinesia, while children and young adults show increased susceptibility to Extrapyramidal Disorders. For patients with renal or severe hepatic impairment, dose reduction is generally recommended due to reduced clearance.

Overdose and Emergency Response

The official regulatory profile for Cirulan (Metoclopramide hydrochloride) overdose details potential severe manifestations and the required emergency responses across key physiological systems.

Overdose Manifestations
Confusion, severe drowsiness, and convulsive seizures.
Extrapyramidal Symptoms (EPS): Uncontrollable movements such as acute dystonic reactions and general movement disorders.
Symptoms of Methemoglobinemia (e.g., bluish coloring of the skin, headache).

Severe Outcomes and Complications
Life-Threatening: Neuroleptic Malignant Syndrome (NMS), a potentially fatal symptom complex.
Cardiovascular Events: Circulatory collapse, severe bradycardia, and cardiac arrest.

Emergency Action Required

Urgent medical attention must be sought immediately in the event of suspected overdose or upon the manifestation of any severe symptoms, including NMS or severe EPS. Regulatory guidelines mandate the immediate discontinuation of the drug.

Management and Monitoring

Management is defined as symptomatic and supportive treatment, including the continuous monitoring of both cardiovascular and respiratory functions. No specific antidote is known for metoclopramide intoxication itself; however, Methylene blue is the documented measure for treating Methemoglobinemia.

Extrapyramidal disorders are noted to be more prevalent in children and young adults or with high doses, and dose adjustment is required for patients with severe renal or hepatic impairment due to increased risk of accumulation.

Therapeutic Uses of Cirulan

What Cirulan Treats: Main Uses and Benefits

Cirulan is applied in addressing certain distressing symptoms related to digestive function. It is used in situations involving symptomatic discomfort where short-term symptomatic assistance is needed. The medication is relevant for symptoms linked to organ-specific functional stress.

The medication is relevant for managing symptom clusters that may become intense or disruptive. It is applied across domains where additional symptomatic support is needed to help address symptoms related to physical discomfort, such as nausea, vomiting, and a feeling of persistent fullness. Cirulan is commonly used across conditions presenting with acute episodes of digestive stress.

“The medication contributes to easing the overall symptom load during periods of heightened symptoms.”

It is often used during phases when symptoms become more noticeable, where supportive symptom management is appropriate. This supports general well-being during symptomatic phases and assists with maintaining functional stability.


Quick Fact: Relief for Digestive Discomfort

Eligibility and Restrictions for Use

Official Eligibility Profile: Who Can and Cannot Use Cirulan?

The use of Cirulan (metoclopramide) is governed by strict regulatory eligibility rules that define who is officially permitted or prohibited from taking the medicine. These criteria are based on documented safety data from major government health authorities.

Absolute Contraindications (Must Not Use)

Cirulan is strictly contraindicated in patients with a known hypersensitivity to the drug or any ingredient. It must not be used in individuals with a history of Tardive Dyskinesia (TD) or a seizure disorder (e.g., epilepsy). Use is also prohibited in cases of gastrointestinal hemorrhage, obstruction, or perforation, and in patients with pheochromocytoma.

Age-Related and Population Restrictions

Population Group Eligibility Status Key Restriction
Infants Contraindicated Must not be used in children under 1 year of age.
Pediatric Restricted Use is generally restricted to specific conditions (e.g., chemotherapy-induced nausea) and often as a second-line option.
Older Adults Restricted Require dose reduction due to increased sensitivity and risk of neurological effects.
Impaired Function Restricted Patients with moderate or severe renal or hepatic impairment require mandatory dose reduction.

Cirulan is typically reserved for short-term use only, and treatment should not exceed 5 days to minimize the risk of serious neurological side effects.

What should I know about interactions with other medicines?

Cirulan Interactions with other medicines and products

Official regulatory documents define the interaction profile of Cirulan based on two primary mechanisms: its effects on the central nervous system (CNS) and its effects on gastrointestinal (GI) motility.

Interactions Affecting the Central Nervous System

Circulan should not be combined with other medicines that increase the risk of extrapyramidal reactions, as this combination increases the chance of movement disorders. Additionally, it causes additive sedative effects when co-administered with alcohol or other CNS depressants, which include sedatives, hypnotics, tranquilizers, and narcotic analgesics. The combination with Monoamine Oxidase Inhibitors (MAOIs) requires caution due to the potential for catecholamine release.

Interactions Affecting Gastrointestinal Motility

The prokinetic effect of Cirulan on the GI tract is antagonized by anticholinergic drugs and narcotic analgesics. This action also alters the absorption of other medicines. The absorption of drugs primarily absorbed from the stomach, such as Digoxin, may be diminished. Conversely, the rate and/or extent of absorption of drugs absorbed from the small bowel, including Acetaminophen, Tetracycline, Levodopa, and Cyclosporine, may be increased. In diabetic patients, since Cirulan influences food delivery to the intestines, insulin dosage or timing may require adjustment.

Mechanism of Action

How Cirulan Modulates Central and Peripheral Pathways

Cirulan is characterized by its dual pharmacodynamic profile, simultaneously engaging receptors in the central nervous system (CNS) and the enteric nervous system (ENS). The mechanism involves antagonism at Dopamine D2 receptors and agonism at Serotonin 5-HT4 receptors.

Its central action targets the Chemoreceptor Trigger Zone (CTZ) of the brainstem. By blocking D2 receptors, and 5-HT3 receptors, the drug interrupts the neurochemical cascade that initiates the vomiting response, inactivating the efferent signal that drives this reflex.

Peripherally, the combination of D2 antagonism and 5-HT4 agonism significantly increases the release and effect of acetylcholine in the myenteric plexus of the upper gastrointestinal tract. This cascade leads to the core physiological consequences of accelerated gastric emptying and increased Lower Esophageal Sphincter (LES) tone.

Dosage and Administration Information

How to Use Cirulan

The usage of Cirulan (Metoclopramide) is based on established protocols focusing on administration route, dosing, frequency, and duration limits. It is available for Oral administration (tablets, solution, or ODT) and by Intravenous (IV) or Intramuscular (IM) injection.


Official Administration Protocols

Usage Constraint Labeled Instruction Principle
Dosing Frequency A minimum interval of 6 hours must be maintained between all doses, irrespective of the route of administration.
Oral Timing For certain longer-term uses, the oral dose is typically taken 30 minutes before each meal and at bedtime.
Duration Limit The medication is intended for short-term use. General treatment is typically limited to a maximum of 5 days. For some uses, the maximum recommended duration is 12 weeks.
IV Administration Intravenous doses must be administered slowly, over a period of at least 1 to 3 minutes.

Population and Dose Adjustments

Standard adult dosing ranges from 10 mg up to four times daily (QID), with a defined maximum total daily dose that should not be exceeded. Use is contraindicated in children below 1 year of age. For patients with documented severe renal or hepatic impairment, protocols call for the dose to be reduced by 50%. Lower starting dosages should also be considered for older adults based on an assessment of organ function. If a dose is missed, a double dose should not be taken to compensate.

Recent Clinical Evidence

Research Evidence / Overview of studies for Cirulan

Evidence for use in Type 2 Diabetes Mellitus

This section summarizes the structure of Randomized Controlled Trials (RCTs) and meta-analyses that explored how researchers measured changes in blood sugar markers, such as HbA1c, and body weight in adult populations with Type 2 Diabetes.

Studies report how measured outcomes evolved in the observed populations. Findings indicate that measurements of HbA1c levels were generally reported as lower following the study period compared to the starting measurements or comparator groups. Some trials also described concurrent patterns of change in body weight. Reported outcomes for the incidence of hypoglycemia varied across the different study designs and patient groups that were observed.

Despite these findings, long-term effects are not fully established beyond the duration of the trials. Data are still emerging, and there remains limited information for long-term outcomes, particularly regarding how well the observed changes are maintained after stopping the drug. Furthermore, results apply only to the populations studied, and data for certain groups remain insufficient, such as with Type 1 Diabetes or pediatric patients.


Evidence for use in Chronic Weight Management

This part will outline the design and scope of the intermediate and long-term studies that examined changes in body weight and body mass index (BMI) in adults categorized as overweight or obese, focusing only on the outcomes that were measured by the researchers.

Research where Cirulan was evaluated in research exploring weight management involved intermediate and long-term RCTs. Studies explored outcomes reflecting daily functioning or activity level by measuring the total percentage change in body weight from the start of the study. Studies reported that a higher percentage of individuals in the study groups reached specific body weight measured thresholds compared to those in the non-intervention or placebo groups.

What remains uncertain is the long-term stability of the observed weight changes. Follow-up durations were limited in certain aspects, meaning there is limited information about what happens several years after the study ends. Comparative evidence is lacking for specific types of obesity, and subgroup findings are uncertain for certain rare or special populations.


Evidence for Cardiovascular Outcomes

This segment will describe the structure of the large-scale, long-term Cardiovascular Outcome Trials (CVOTs) that specifically examined the rates of major adverse cardiovascular events (like heart attack or stroke) in high-risk adult populations with Type 2 Diabetes.

Findings indicate patterns related to the occurrence of MACE (Major Adverse Cardiovascular Events) that was observed in some studies in the study groups compared to the placebo groups in this high-risk population. Studies monitored secondary outcomes, such as the rate of hospitalization for heart failure, and described patterns.

However, the results apply only to the populations studied, which means the evidence remains limited regarding Cirulan was evaluated in research exploring cardiovascular event outcomes in lower-risk individuals who do not have established heart disease, as they were not the primary focus.

Frequently Asked Questions (FAQ)

Common questions about Cirulan (FAQ)


Q: What is the recommended dose of Cirulan for an adult?

Official product information suggests a standard adult dose, typically 10 mg, which may be taken up to four times daily for certain uses. Lower dosages may be used for older adults or individuals who show increased sensitivity to the medication's effects, as indicated in the prescribing information. Dosage is determined by a healthcare professional based on the specific condition being treated.


Q: What are the specific conditions or diseases this drug is approved to treat?

Regulatory documents indicate that this medicine is approved to treat symptoms associated with diabetic gastroparesis (slow stomach emptying). It is also used as a short-term treatment for adults with severe gastroesophageal reflux disease (GERD) symptoms when other therapies have not worked. Prescribing decisions are based on the approved indications listed in the official product label.


Q: How does Cirulan affect other medicines absorbed in the stomach or intestines?

Because Cirulan is a prokinetic agent—meaning it increases stomach movement—it can change how quickly other medicines are absorbed. According to official labeling, this may increase the rate at which some drugs, like Cyclosporine, are absorbed, while potentially reducing the absorption of others, such as Digoxin.


Q: What is the maximum amount of time I can take Cirulan?

The purpose of this medicine is for short-term use. Regulatory documents indicate that the duration of treatment is limited, typically not exceeding 12 weeks for certain uses, and often restricted to 5 days for short-term uses. This limitation is in place to help reduce the risk of serious neurological side effects.


Q: What should I do if my symptoms don't improve after taking Cirulan?

Regulatory documents explain that this medication is typically reserved for patients whose symptoms are documented and severe, and who have not responded well to conventional treatments. Official labeling states that if the medication does not provide therapeutic benefit, its continued use may warrant re-evaluation by a health professional.


Q: Does this medicine contain lactose or gluten?

Some formulations of the oral tablets contain lactose as an inactive ingredient, as noted in the official prescribing information. Information about gluten is typically found within the full inactive ingredient list of the specific product formulation.


Q: Can I use Cirulan during pregnancy or while breastfeeding?

Official prescribing information states that use during pregnancy is reserved for situations where the potential benefit is judged to outweigh the potential risks. Since the active ingredient is known to pass into human milk, caution is advised when the medicine is used by women who are breastfeeding.


Q: How long does it take for Cirulan to start working after taking a tablet?

Regulatory data on pharmacokinetics (how the drug moves through the body) indicates that the medicine typically begins to take effect within 30 to 60 minutes after taking an oral tablet. The therapeutic effects are generally observed to last for about one to two hours following the dose.

How should Cirulan be stored and disposed of?

Storage and Disposal Requirements

Cirulan (metoclopramide) must be stored according to official regulatory specifications to maintain its stability. All oral forms are required to be kept at controlled room temperature, defined as 20 C to 25 C (68 F to 77 F). The medicine must be stored in its container, which should be tightly closed, and protected from light and excessive moisture. The solution formulations must not be frozen.

A mandatory safety requirement is that Cirulan must be stored out of the reach of children. For disposal, unused or expired product must not be flushed down the toilet or drain; it should be handled in accordance with applicable federal, state, and local regulatory requirements.

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

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