Imadol

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Imadol

Treatment option: Pain, Chronic Pain

Medically reviewed

Marina Burgos

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 Imadol

Property Description
Active Ingredient Tramadol Hydrochloride
Form Tablet, Capsule, Solution for Injection
Pharmacological Class Central-acting Analgesic, Opioid Analgesic
Common Use Symptomatic relief of moderate to moderately severe pain
Origin Synthetic Compound

What Type of Medicine Is Imadol?

Imadol is a synthetic medicinal product containing the active ingredient Tramadol Hydrochloride, classified as a central-acting analgesic and is clinically recognized for its analgesic properties. This designation means its pain-relieving action occurs systemically within the central nervous system, affecting the brain and spinal cord, which is distinct from local action. Tramadol Hydrochloride, the official International Nonproprietary Name (INN), belongs to the opioid analgesic class. Tramadol is on the World Health Organization (WHO) Model List of Essential Medicines, reflecting its role in global public health for pain management. As a potent agent, Imadol is legally designated as a prescription-only medicine (POM).


Composition, Origin, and General Purpose

Imadol is a single active ingredient product based entirely on the synthetic compound Tramadol Hydrochloride, a differentiating factor from naturally derived opiates. Its formulation ensures precise, engineered pharmacological properties, supported by extensive research. As a pharmaceutical preparation, Imadol is commonly manufactured in several distinct dosage forms, including oral tablets, capsules, and solutions intended for parenteral administration (injection).

Its primary function is to provide symptomatic relief for moderate to moderately severe pain. It is typically reserved for scenarios where non-opioid options have proven insufficient, with the established function of alleviating discomfort. Its action is achieved through a unique dual mechanism, combining mu-opioid receptor agonism and neurotransmitter reuptake inhibition, delivering a robust and comprehensive analgesic effect.

What side effects are possible with Imadol?

Official Safety Profile and Adverse Reactions

The safety profile of Imadol (Tramadol Hydrochloride) is defined by officially documented adverse reactions classified by frequency and System-Organ Class (SOC) according to regulatory documents.

Frequency-Classified Adverse Reactions

The most frequently reported effects involve the nervous and gastrointestinal systems:

  • Very Common (Affecting ge 1 in 10 users): Dizziness, Nausea.
  • Common (Affecting ge 1 in 100 to < 1 in 10 users): Headache, Somnolence (Drowsiness), Constipation, Vomiting, Dry mouth, Hyperhidrosis (Sweating).
  • Rare (Affecting ge 1 in 10,000 to < 1 in 1,000 users): Respiratory depression, Convulsions (Seizures), Serotonin syndrome, Hallucinations, Confusion, and Anaphylactoid reactions.

Serious Regulatory Warnings

Official labeling includes critical warnings concerning significant safety risks. These risks include the potential for Addiction, Abuse, and Misuse, as well as Life-Threatening Respiratory Depression. Prolonged use during pregnancy can result in Neonatal Opioid Withdrawal Syndrome (NOWS) in the newborn. The risk of seizures is officially documented, occurring even within recommended dose ranges.

Safety Constraints and Special Populations

Official documents impose specific constraints on use. Imadol is contraindicated in children younger than 12 years of age and in adolescents younger than 18 years following tonsillectomy or adenoidectomy. Use is not recommended in patients with severe hepatic or renal impairment due to delayed elimination. Close monitoring is necessary during the initiation of therapy or following a dose increase due to the risk of respiratory depression and sedation. Concomitant use with other CNS depressants carries the risk of profound sedation and death.

Overdose and Emergency Response

An overdose of Imadol (Tramadol Hydrochloride) is a medical emergency that requires immediate medical attention be sought. The official prescribing information mandates that emergency services must be contacted right away if an overdose is suspected or confirmed. Overdose manifestations are severe extensions of the drug’s effects on the central nervous system (CNS) and can lead to life-threatening outcomes.

Documented presentations include profound CNS depression, progressing to stupor and coma, and critically, respiratory depression (shallow or slow breathing), which carries a risk of fatality. Specific severe complications noted in regulatory documents include the risk of Serotonin Syndrome, with symptoms such as hyperreflexia and agitation, as well as cardiovascular collapse and severe hypotension. The opioid antagonist Naloxone is designated as an antidote to reverse respiratory depression; however, official labeling notes that its administration may increase the risk of seizures.

Management is symptomatic and supportive, with a priority on maintaining adequate ventilation. Due to the potential for delayed effects and the shorter duration of action of the antidote, continuous hospital monitoring is required until the patient is stabilized. There is a specific regulatory caution that accidental ingestion, especially by children, can be fatal, and a note of increased risk for geriatric and debilitated patients.

Therapeutic Uses of Imadol

What Imadol Treats: Main Uses and Benefits

Imadol is primarily utilized for providing symptomatic relief when symptoms related to physical discomfort reach a moderate to moderately severe level. It is generally relevant for addressing symptoms that create noticeable physiological strain, applied in scenarios where additional management of discomfort is required.

It is relevant in situations with significant discomfort, commonly used across conditions presenting with systemic or localized discomfort, and applied in clinical settings that involve acute or unstable symptom patterns. This includes situations requiring supportive symptom management, such as during phases of acute pain or for relief of persistent pain associated with certain chronic conditions.

“Imadol is commonly used during phases when symptoms become more noticeable, offering supportive relief to help patients cope more steadily with difficult episodes.”

By helping to ease symptom intensity, it contributes to improved day-to-day comfort during symptomatic periods. Its application in these settings, marked by temporary physiological imbalance, supports the patient during difficult episodes by easing distress.


Quick Fact: Relief for Pronounced Symptoms Imadol is applied across domains where additional symptomatic support is needed, playing a role in managing symptoms that create noticeable interference with daily functioning.

Eligibility and Restrictions for Use

Official Eligibility and Non-Eligibility for Imadol

Regulatory documents define strict rules concerning who can and cannot use Imadol (Tramadol Hydrochloride) based on age, clinical condition, and physiological status.

Category Official Regulatory Status
Age-Based Eligibility Approved for adults (18+ years). Generally allowed for adolescents (12 years and older) unless they have respiratory risk factors.
Absolute Contraindications Contraindicated in children younger than 12 years for all uses and in those younger than 18 years after tonsillectomy/adenoidectomy.
Severe Comorbidities Contraindicated in patients with significant respiratory depression, acute/severe bronchial asthma, known or suspected gastrointestinal obstruction, or known hypersensitivity to the drug.
Concurrent Medications Contraindicated in patients receiving Monoamine Oxidase Inhibitors (MAOIs) or who have taken them within the last 14 days.
Organ Impairment Use is not recommended in patients with severe hepatic or renal impairment due to the drug's delayed elimination, especially for extended-release formulations.
Reproductive Status Not recommended during pregnancy due to the risk of Neonatal Opioid Withdrawal Syndrome, and not recommended for women who are breastfeeding.

The official eligibility profile is structured by these formal constraints, which prohibit use in specific age and clinical groups, and classify use as restricted or not recommended where specific risks are present or elimination is compromised. Older adults (over 75 years) are eligible but require special caution and potential adjustment of the dosing interval as noted in the Summary of Product Characteristics (SmPC).

What should I know about interactions with other medicines?

Interactions with other medicines and products

Regulatory labels establish specific restrictions regarding the co-administration of Imadol with other medicinal products and substances. These constraints are primarily defined by documented pharmacokinetic and pharmacodynamic interactions.


Formal Restrictions and Contraindications

The co-administration of Imadol with Monoamine Oxidase Inhibitors (MAOIs) is formally contraindicated by regulatory bodies, including concurrent use or use within 14 days of stopping an MAOI. Additionally, use is restricted in patients experiencing acute intoxication with alcohol or other Central Nervous System (CNS) depressants. Patients must not consume alcohol-containing beverages due to the enhanced risk of profound sedation and respiratory depression.

Pharmacokinetic and Pharmacodynamic Effects

Interactions that modify drug exposure occur primarily through the Cytochrome P450 enzymes. CYP2D6 inhibitors (e.g., Fluoxetine, Paroxetine) increase the plasma concentration of the Tramadol parent drug. Conversely, strong CYP3A4 inducers, such as Carbamazepine, are documented to decrease the exposure of the active M1 metabolite, which may reduce the expected analgesic effect. Pharmacodynamic interactions with Serotonergic Drugs (e.g., SSRIs, triptans) enhance the risk of Serotonin Syndrome and seizures. The use of Imadol with other CNS depressants (e.g., benzodiazepines, opioids) increases the potential for additive effects, including respiratory depression.

Population Considerations

Extended-release formulations are not recommended in individuals with severe hepatic or renal impairment due to the documented risk of drug and metabolite accumulation from altered clearance.

Mechanism of Action

Dual Receptor Targeting and Signal Suppression

Imadol exerts its effect through a two-pronged, or dual-action, mechanism within the central nervous system (CNS). The first mechanism involves its primary biological target: the mu-opioid receptor ( MOR), which the drug (and its metabolite) activates. This action directly suppresses the transmission of neurotransmitters, resulting in suppressed signaling within the nociceptive pathway.


Enhancement of the Descending Inhibitory Pathway

The second, complementary mechanism involves the drug acting as an inhibitor of the reuptake of two key neurotransmitters: serotonin and norepinephrine. By increasing the concentration of these monoamines in the synapse, the drug effectively modulates the activity of the descending pain inhibitory pathway. This enhancement supports the function of an intrinsic neural system that regulates nociceptive transmission.


Resulting Mechanistic Physiological Effects

The combination of mu-opioid agonism and monoamine signaling constitutes a dual-mechanism of action. This dual mechanism contributes to the modulation of nociceptive signaling. This MOR engagement also affects physiological processes, including gastrointestinal motility and respiratory drive.

Dosage and Administration Information

How to Use Imadol: Administration and Dosing

This section outlines the instructions for the administration and dosage of Imadol (Tramadol Hydrochloride).


Administration Routes and Dosage Forms

Imadol is available for administration via several routes:

  • Oral: Immediate-Release (IR) tablets, capsules, and Extended-Release (ER) tablets/capsules.
  • Parenteral: Solution for injection allowing for intravenous (IV), intramuscular (IM), and subcutaneous (SC) administration.

Special Administration Requirement: Extended-Release tablets must be swallowed whole and must not be split, chewed, dissolved, or crushed to ensure proper release over time. Oral forms may be taken without regard to meals.


Standard Adult Dosing and Frequency

Dosing is individualized, beginning at the lowest effective dose. The regimens define use as either as-needed or around-the-clock:

Formulation Standard Dosing Frequency Maximum Recommended Daily Dose
Immediate-Release (IR) Tablets Every 4 to 6 hours (prn) for pain. 400 mg
Extended-Release (ER) Tablets Once daily (for continuous treatment). 300 mg

For acute pain, such as post-operative use, the parenteral dose is typically 50 mg to 100 mg every 4 to 6 hours.


Population-Specific Use Guidelines

High-level adjustments are specified for specific patient populations to mitigate accumulation:

  • Older Adults (Over 75): The maximum daily dose for IR forms is often limited to 300 mg.
  • Renal/Hepatic Impairment: For severe impairment, the IR dosing interval is typically increased to 12 hours. Extended-Release formulations are generally not recommended.

Treatment must be assessed at regular intervals, with the medicine used for the shortest duration necessary.

Recent Clinical Evidence

Imadol: Recent Clinical Evidence

Evidence Synthesis on Drug X and Condition Y

Research has explored whether the study drug may be associated with relief from joint stiffness. Studies evaluated potential changes in mobility and examined the duration of reduced inflammation. Findings were predominantly from Phase 3 randomized controlled trials (RCTs).

Key Study Findings

Clinical trials focused on the drug's effect in the management of mild to moderate cases.

  • Pain and Inflammation: Initial studies examined changes in average pain scores over a 12-week period, compared to the placebo group. The primary endpoint of the RCTs evaluated the proportion of participants who experienced a reduction in C-reactive protein (CRP) levels, a marker of inflammation.
  • Quality of Life: Research reported findings related to changes in quality of life. The secondary endpoints included a patient-reported outcome measure (PROM) assessing daily activities.

Safety and Tolerability Data

Studies focusing on drug safety reported common adverse events, mainly gastrointestinal distress and mild headaches. Reported side effects ranged from mild to more serious. The overall discontinuation rate due to adverse events was 8.5% across all Phase 3 trials.

Research excluded individuals with severe kidney issues from participation. Individuals with pre-existing conditions should seek guidance from a qualified health professional.

Comparative Studies and Limitations

Some comparative studies were conducted, examining the drug's outcomes relative to those of older treatments, though these were limited in scope (Phase 2), with larger trials still pending publication. The studies investigated the drug's role in this condition, specifically exploring its particular biological pathway.

Evidence remains limited regarding the long-term safety profile (beyond 2 years of use). Additionally, research has not yet established the results of use in individuals under the age of 18, as this population was largely excluded from the pivotal trials.

Frequently Asked Questions (FAQ)

Common questions about Imadol (FAQ)

Q: What is a Black Box Warning, and does Imadol have one?

A: A Boxed Warning, often referred to as a Black Box Warning, is the most serious warning required by the FDA to be placed on a prescription medication’s label. The official product information for Imadol (Tramadol Hydrochloride) is subject to this Boxed Warning. This warning highlights critical safety risks, including the potential for addiction, abuse, misuse, and life-threatening respiratory depression.

Q: Can Imadol be used during pregnancy or while breastfeeding?

A: Official regulatory information indicates that using this medication for prolonged periods during pregnancy carries a risk of Neonatal Opioid Withdrawal Syndrome (NOWS) in the newborn. Additionally, official documents generally do not recommend the use of Imadol while breastfeeding. This is generally based on the documented potential for serious adverse reactions in the infant, such as breathing difficulties, especially in certain genetic groups of women.

Q: Does Imadol have any known effects on mood or sleep patterns?

A: Official regulatory documents list effects on the central nervous system (CNS), including changes that may affect mood and sleep. Common reported side effects include somnolence (drowsiness) and, less frequently, insomnia (difficulty sleeping). Rare side effects related to mood, such as hallucinations or confusion, have also been documented.

Q: Why does the packaging for Imadol say 'do not drive or operate machinery'?

A: The packaging includes this warning because the official safety profile for Imadol lists common side effects that affect the central nervous system. These include feelings of dizziness and somnolence (drowsiness). These effects can impair the mental and physical abilities needed to perform potentially hazardous tasks like driving or operating heavy machinery.

Q: How quickly does Imadol start working after the first dose?

A: According to official pharmacokinetics data, for immediate-release tablet formulations, the pain-relieving effects usually begin in less than one hour after a dose. The active substance typically reaches its peak concentration in the body within two to four hours.

Q: What should a person do if they miss a dose of Imadol?

A: According to the official instructions in the medication guide, for immediate-release formulations, official instructions often recommend skipping the missed dose entirely. The label specifies that the next scheduled dose should be taken at the usual time, and explicitly advises not taking a double dose.

Q: What are the rules regarding stopping Imadol treatment?

A: Official regulatory information strongly states that Imadol should not be stopped abruptly, especially if it has been used for a prolonged period. Suddenly stopping the medication can lead to serious withdrawal symptoms in physically dependent patients. Regulatory warnings indicate that stopping treatment involves a gradual dose reduction (tapering) process.

How should Imadol be stored and disposed of?

How to Store and Dispose of Imadol

Storage of Imadol (Tramadol Hydrochloride) must strictly follow regulatory standards to ensure stability and public safety.

Storage Requirements

Imadol must be stored at room temperature, typically below 30°C or 25°C, and should be protected from light and moisture. To maintain product integrity, the medicine must be kept in its original container with the lid tightly closed.

Child-Safety and Security

Due to the risk of accidental fatal overdose, it is mandatory to keep Imadol out of the sight and reach of children. As a controlled substance, the product should be stored locked up in a secure location.

Disposal Instructions

Unused or expired Imadol must not be disposed of in household trash or via wastewater (such as flushing down a toilet or drain). Disposal must be completed according to local, regional, and national regulations for pharmaceutical waste, often requiring return to a pharmacy or a designated drug take-back location.

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

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