Klometol

Quick links to important sections

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 Klometol

Quick Facts

Property Description
Active Ingredient Metoclopramide (INN)
Form Tablet, Oral Solution, Injectable Solution
Pharmacological Class Antiemetic Agent, Prokinetic Agent
General Purpose Relieves nausea and vomiting, stimulates gut motility
Origin Synthetic chemical compound

Klometol: Definition and Core Pharmacological Class

Klometol is the brand name for the prescription-only medicine whose sole active ingredient is Metoclopramide, typically used as the hydrochloride salt. This synthetic chemical is categorized as both an Antiemetic Agent and a Prokinetic Agent. This dual designation reflects its action as a Dopamine D2 Receptor Antagonist, which centrally blocks signals in the brain that trigger sickness while simultaneously acting peripherally on the digestive tract. Metoclopramide modulates both the neurological vomiting reflex and the physical movement of the upper gut.


Composition, Origin, and Available Forms

Klometol is provided as a single-ingredient product, containing only the active substance Metoclopramide, which is chemically a substituted benzamide derivative of synthetic origin. The medicine is manufactured in several dosage forms, allowing for multiple routes of administration. These forms include the standard tablet, a liquid oral solution (syrup) often prepared with an aqueous solution as the base, and the sterile injectable solution for parenteral use (intravenous or intramuscular administration).


What is the General Purpose of a Prokinetic Agent?

The general purpose of Klometol is to relieve generalized symptoms of nausea and vomiting by improving the function of the upper digestive system. This means the medicine's main role is to alleviate discomfort arising from both the feeling of sickness and slow stomach movement. A Prokinetic Agent is specifically defined as a medicine that enhances and coordinates the movement, or motility, along the gastrointestinal tract. Klometol acts by increasing the strength of muscle contractions in the stomach and small intestine, thereby accelerating gastric emptying and reducing the chance of digestive contents flowing backward. This dual anti-sickness and pro-movement function addresses issues related to digestive slowness and neurological triggers of distress.

What side effects are possible with Klometol?

Klometol (metoclopramide) is generally prescribed for short-term use—typically no more than 12 weeks—due to the risk of serious neurological side effects. Patients should not exceed the prescribed dose or duration of treatment.

Potential Side Effects

Common side effects are often mild and may include:

  • Drowsiness, fatigue, or lack of energy
  • Restlessness (akathisia) or nervousness
  • Headache and dizziness
  • Diarrhea

These effects may subside as your body adjusts to the medication. You should avoid driving or operating heavy machinery until you know how Klometol affects you.

Serious or less common side effects require immediate medical attention. These include:

System Serious Side Effect Symptoms to Watch For
Neurological Tardive Dyskinesia (TD) Uncontrollable, repetitive movements, especially of the face (lip smacking, grimacing, tongue movements). Risk increases with longer use.
Neuroleptic Malignant Syndrome (NMS) High fever, severe muscle stiffness, confusion, and changes in heart rate or blood pressure.
Extrapyramidal Symptoms Tremors, muscle spasms (dystonia), rigidity, or trouble keeping balance.
Psychiatric Depression Worsening depression or thoughts of self-harm.
Allergic Anaphylaxis Swelling of the face, tongue, or throat; difficulty breathing; or hives.

Safety Information and Contraindications

Klometol is contraindicated for patients with known hypersensitivity, gastrointestinal bleeding, obstruction, or perforation, epilepsy or a seizure disorder, and a type of adrenal gland tumor called pheochromocytoma. Caution is advised for those with Parkinson's disease, heart failure, high blood pressure, kidney or liver impairment, and a history of depression.

Pregnancy and Breastfeeding: Consult your doctor, as the drug may cross the placenta and is excreted in breast milk.

Overdose and Emergency Response

An overdose of Klometol (metoclopramide) may lead to a variety of symptoms, primarily related to its effects on the central nervous system. Immediate medical attention is required if an overdose is suspected or confirmed.

Signs and Symptoms of Overdose

The effects of Klometol overdose are generally self-limiting but can be severe. Key symptoms include:

  • Central Nervous System Effects: Severe drowsiness, confusion, disorientation, or seizures.
  • Movement Disorders: Uncontrolled muscle movements, which are known as extrapyramidal reactions. These can manifest as involuntary movements of the face, tongue, neck, or limbs (e.g., dystonia).
  • Other Potential Effects: Lack of energy, bluish discoloration of the skin (cyanosis) due to methemoglobinemia (rarely reported, primarily in infants), and headache.

When to Seek Help

If you or someone else has taken more than the prescribed dose of Klometol, or if any of the following severe symptoms occur, immediately contact emergency medical services or a poison control center for advice:

  • Seizures or fitting.
  • Severe disorientation or loss of consciousness.
  • Uncontrolled or unusual muscle movements.
  • Trouble breathing or bluish lips/skin.

Overdose management is supportive and may involve administering medication to control extrapyramidal symptoms. Symptoms typically resolve within 24 hours. Do not induce vomiting unless specifically instructed by a healthcare professional.

Therapeutic Uses of Klometol

What Klometol Treats: Main Uses and Benefits

Klometol (Metoclopramide) is a medication utilized for targeted symptomatic support across domains involving certain distressing symptoms related to heightened physiological activity. It is applied when symptoms that interfere with daily functioning may create noticeable physiological strain.

The medication is commonly used to help manage symptoms associated with Diabetic Gastroparesis (conditions linked to organ-specific functional stress), Gastroesophageal Reflux Disease (GERD) (conditions where functional stability becomes affected), and to assist with the control of acute, disruptive sickness in clinical settings. This includes post-operative nausea and vomiting (PONV) and severe sickness linked to chemotherapy or radiotherapy. Additionally, it is applied during episodes of acute migraine to address the associated profound and debilitating nausea and vomiting.

Symptom Relief Summary

Symptom Focus Associated Condition Categories Patient Benefit Focus
Nausea and Vomiting Acute Clinical Sickness, Acute Migraine Supports patients during difficult episodes
Early Fullness and Heartburn Diabetic Gastroparesis, GERD Contributes to easing the overall symptom load

“Klometol supports patients during difficult episodes by easing distress and contributing to improved comfort during symptomatic periods.” The use of this medicine supports general well-being and may assist with maintaining functional stability when digestive and sickness symptoms become more noticeable.

Eligibility and Restrictions for Use

Klometol (Metoclopramide) is governed by strict population eligibility rules outlined in regulatory documents (e.g., FDA, EMA SmPC). These rules determine who is approved to use the medicine, who must avoid it, and who requires restricted use.

Populations for Whom Use is Contraindicated

Klometol must not be used in patients with the following conditions, as stated in regulatory labeling:

  • Gastrointestinal Hemorrhage, Mechanical Obstruction, or Perforation
  • Epilepsy or a history of seizure disorder
  • Pheochromocytoma (or suspected catecholamine-releasing tumor)
  • Parkinson's Disease
  • History of Tardive Dyskinesia or a dystonic reaction to metoclopramide
  • Children aged less than 1 year
  • Known Hypersensitivity to the drug or its components

Age-Specific and Conditional Eligibility

Population Group Regulatory Status / Restriction
Children (1–18 years) Restricted as a second-line option for specific indications (e.g., CINV, PONV).
Elderly Patients Eligible, but use is conditional. A dose reduction may be necessary due to potential functional decline and increased sensitivity.
Severe Organ Impairment Conditional use in patients with severe renal or hepatic impairment, requiring an official dose reduction due to slower drug clearance.
Pregnancy / Lactation Use is not recommended in breastfeeding mothers or near the end of pregnancy (third trimester).

These official eligibility rules serve as the mandatory framework for determining patient suitability for Klometol therapy.

What should I know about interactions with other medicines?

Klometol (metoclopramide) has several documented interactions with other medicines and products, which are structured by their effect on drug concentrations or body systems according to regulatory documents.

Contraindicated Combinations

  • Levodopa and other Dopaminergic Agonists are contraindicated because metoclopramide's dopamine-blocking action mutually antagonizes the effects of these agents.

Pharmacokinetic Interactions

Metoclopramide is a substrate for the CYP2D6 enzyme. Co-administration with strong CYP2D6 inhibitors (such as fluoxetine or quinidine) increases metoclopramide's systemic exposure, which may necessitate a dosage reduction as advised in the prescribing information. Conversely, metoclopramide's prokinetic effect on the stomach alters the absorption of other oral drugs:

  • Cyclosporine: Plasma concentrations of cyclosporine may be increased, requiring monitoring.
  • Digoxin: Plasma concentrations of digoxin may be decreased, requiring monitoring.
  • Paracetamol (Acetaminophen): Absorption is enhanced.

Pharmacodynamic Interactions

These involve additive or counteracting effects on body systems:

  • CNS Depressants: Combining with substances like opioids, sedatives, or tranquilizers potentiates the effects of Central Nervous System depression, increasing the risk of sedation.
  • Neuroleptics: The risk of developing extrapyramidal disorders is increased due to the additive antidopaminergic activity.
  • Anticholinergics/Opioids: These agents mutually antagonize metoclopramide's effect on gastrointestinal motility.

Food, Alcohol, and Specific Conditions

  • Alcohol (Ethanol): Use of alcohol is not recommended as it potentiates the sedative effects.
  • Insulin: Due to accelerated gastric emptying, diabetic patients may require adjustments to the timing or dose of their insulin to account for altered food transit.
  • Population Notes: Patients identified as CYP2D6 poor metabolizers have naturally higher exposure, which is a key consideration when co-administering any interacting medicines.

Mechanism of Action

Central Suppression of Emesis Signals

Klometol's mechanism involves antagonism (blockade) of Dopamine D2 receptors and Serotonin 5 HT3 receptors within the brain's Chemoreceptor Trigger Zone (CTZ). By blocking these receptors, the mechanism prevents the neurological cascade that receives stimuli and initiates the emesis reflex (vomiting reflex). The central D2 antagonism is also non-selective, extending to receptors in the nigrostriatal pathways, a functional consequence of its molecular action.


Peripheral Modulation of Gut Motor Function

The peripheral mechanism operates in the Enteric Nervous System (ENS) of the upper gut wall. This dual action combines D2 receptor antagonism with Serotonin 5 HT4 receptor agonism. This modulation increases the local release of acetylcholine, the primary excitatory neurotransmitter that regulates smooth muscle contraction. The resulting physiological consequence is an increased rate of gastric emptying and greater propulsive peristalsis (movement) through the stomach and small intestine. This action is anatomically specific, resulting in minimal effect on the motility of the distal large intestine.

Dosage and Administration Information

How to use Klometol (Metoclopramide) — Established Administration Guidelines

Klometol is available for oral (tablet, solution, orally disintegrating tablet) and parenteral (Intravenous/Intramuscular) administration. Dosage and duration of use are governed by clinical guidelines, which vary by jurisdiction and condition.

General Dosing and Administration

Administration Rule Clinical Guideline Profile A Clinical Guideline Profile B
Dosing Frequency (Oral) Typically four times daily, 30 minutes before each meal and at bedtime. Up to three times daily (conventional formulations).
Maximum Treatment Duration Generally not to exceed 12 weeks for any treatment duration. Maximum of 5 days for all approved indications.
Adult Daily Dose Up to 40 mg (diabetic gastroparesis) or 60 mg (GERD). Max 30 mg/day or 0.5 mg/kg body weight.

Procedural and Age-Specific Rules

Oral Administration: Tablets and solutions are taken on an empty stomach, approximately 30 minutes before each meal and at bedtime. Orally disintegrating tablets must be removed from the package using dry hands and placed immediately on the tongue to dissolve and be swallowed with saliva. Liquid formulations require measurement with an appropriately designed graduated oral syringe for accuracy.

Parenteral Administration: Intravenous (IV) doses must be administered as a slow bolus over at least 1 to 2 minutes or over at least 3 minutes, depending on specific clinical guidelines, to minimize the risk of adverse reactions.

Pediatric Use: Klometol is not recommended for children under 1 year of age and is restricted to second-line therapy for specific types of nausea and vomiting in older children, with dosing based on body weight (0.1 to 0.15 mg/kg per dose).

Missed Dose: If a dose is missed, it should be taken as soon as remembered, unless it is nearly time for the next scheduled dose. Do not take a double dose to compensate for a missed one.

Recent Clinical Evidence

Research evidence / Overview of studies for Klometol

Evidence for Gastrointestinal Motility-Related Conditions

This section provides an overview of the research, primarily randomized controlled trials and functional studies, that examined Klometol in research exploring conditions related to delayed stomach movement, detailing the specific symptoms and physiological functions measured in these trials.

Diabetic Gastroparesis (DGP)

Research exploring this condition was primarily conducted through short-term, randomized controlled trials (RCTs). The trials focused on outcomes related to physical discomfort, such as nausea, bloating, and fullness, often applied in studies examining patient-reported experiences. Studies monitored measurements of both subjective symptom scores and objective physiological parameters related to gastric emptying over the trial duration. The follow-up durations were limited, and long-term outcomes and the impact of treatment beyond a few months (typically 12 weeks) are not fully established by the existing research.

Gastroesophageal Reflux Disease (GERD)

Klometol was evaluated in research exploring conditions involving periods of heightened symptoms, such as GERD, through short-term clinical trials. The research examined outcomes related to systemic or functional imbalance, including objective measurements like pressure in the lower esophagus. Findings were mixed when used over long periods or alongside other standard treatments. Research evaluating the long-term patterns for the drug's chronic use is not supported by consistent evidence, and regulatory bodies have noted that certainty remains low for its extended management.

Evidence for Acute Nausea and Vomiting

This section summarizes the structure of clinical research, including systematic reviews and single-dose trials, that evaluated Klometol in settings of acute sickness associated with migraine, surgery, or specific anticancer treatments.

Acute Migraine Nausea and Vomiting

Research exploring short-term symptom changes in acute migraine attacks involved Randomized Controlled Trials (RCTs). Trials examined whether administration during periods of increased symptom activity was associated with measurements of change in both headache scores and the level of associated nausea over a few hours. However, comparative evidence is lacking regarding the most effective administration route and different dosage levels.

Post-Operative and Chemotherapy-Related Sickness

Klometol was evaluated in research contexts involving fluctuating or unstable symptoms, specifically in preventing sickness after surgery (PONV) and in managing sickness linked to chemotherapy or radiotherapy. Studies monitored responses over defined time intervals, typically 24 to 48 hours. Comparative evidence described patterns where the drug was used less frequently than certain agents in current treatment guidelines for specific contexts, and the treatment duration is restricted to a few days.

Key Studies & References

  1. Pharmacological Approaches to Diabetic Gastroparesis: A systematic review of randomised clinical trials
  2. Parenteral metoclopramide for acute migraine: meta-analysis of randomised controlled trials
  3. BC Cancer Guidelines for Prevention and Treatment of Chemotherapy-Induced Nausea and Vomiting in Adults (referencing metoclopramide's role in breakthrough CINV)

Frequently Asked Questions (FAQ)

Common questions about Klometol (FAQ)

Q: What is Klometol used for?

Klometol is authorized for treating various conditions related to the stomach and intestines. Official documents state it is used to manage nausea and vomiting, including those caused by chemotherapy or migraine. It may also be used in certain diagnostic procedures.

Q: How does Klometol work in the body?

Klometol contains the active substance metoclopramide. Regulatory information indicates that it works on the brain and the digestive system to help control the signals that trigger nausea and vomiting. It also helps move food through the stomach and small intestine more quickly.

Q: Can Klometol cause movement problems?

According to the official product information, Klometol can potentially cause extrapyramidal disorders (movement problems), particularly in young adults and children. These may include involuntary movements or muscle spasms. Regulatory warnings indicate that these effects are often reversible upon stopping treatment, but patients should report any movement issues to a healthcare professional immediately.

Q: Is it safe to drink alcohol while taking Klometol?

Official product information recommends against consuming alcohol while using Klometol. Alcohol can significantly increase the sedating effects (making a person drowsy or less alert) of the medication. Because of this risk, activities requiring full mental alertness, such as driving or operating machinery, should be approached with extreme care.

Q: Can I take Klometol during pregnancy?

Official information states that the use of Klometol during pregnancy is generally restricted to situations where a healthcare professional has determined the benefits outweigh the potential risks. While some data suggest a lower risk for occasional use, long-term or high-dose use is typically avoided. It is essential to follow the advice of the prescribing doctor.

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

Regulatory documents warn against taking more than the prescribed amount to compensate for a missed dose. The prescribed dosing schedule should be maintained, ensuring the recommended interval between doses is followed. If there are concerns about a missed dose, the patient should consult their healthcare provider.

How should Klometol be stored and disposed of?

Klometol (metoclopramide) must be stored and disposed of according to official regulatory labeling to ensure product quality and safety.

Labeled Storage and Handling

Requirement Official Regulatory Statement
Temperature Store at Controlled Room Temperature, 20 C to 25 C (68 F to 77 F), avoiding excessive heat.
Protection Keep the container tightly closed to protect contents from moisture. Liquid forms must be protected from light and not frozen.
Stability The oral solution may have a time-limited in-use stability (e.g., 12 weeks) after opening. Unused portions of injectable forms must be discarded.
Child Safety Mandatory storage rule to keep the medicine out of the sight and reach of children.

Official Disposal Rules

Unused or expired Klometol must be disposed of according to local regulations for pharmaceutical waste. Labeling cautions against disposing of the medicine via sewage or general trash. Consumers should use drug take-back programs whenever available to ensure proper environmental disposal.

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

Available in countries:

Equivalent of Klometol found in:

A-Z Index: