Altadol

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Altadol

Treatment option: Pain, Chronic Pain

Medically reviewed

Laura Arias

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 Altadol

What is Altadol? (Tramadol Hydrochloride)

Property Description
Active ingredient Tramadol Hydrochloride (INN)
Form Tablet, Capsule, Oral Solution, Injectable Solution
Pharmacological class Opioid Analgesic, Serotonin–Norepinephrine Reuptake Inhibitor (SNRI)
General purpose Relief of moderate to moderately severe pain
Origin Synthetic Compound

Defining Altadol: Active Ingredient and Origin

Altadol is a prescription-only pharmaceutical preparation whose sole active substance is the synthetic compound Tramadol Hydrochloride (INN). The drug is chemically manufactured, placing its origin firmly in the synthetic category. Unlike combination products, Altadol is a single active ingredient product, available in various pharmaceutical preparations to facilitate clinical needs, including immediate-release and extended-release tablets or capsules, as well as oral solution and injectable solution.

Pharmacological Classification and Dual Action

Altadol is professionally categorized as a centrally acting analgesic belonging to the opioid analgesic class. Its mechanism is unique due to its multimodal action, functioning as a weak mu-opioid receptor agonist while also acting as a weak Serotonin–Norepinephrine Reuptake Inhibitor (SNRI).

Pharmacological studies describe the clinical efficacy of this dual mechanism, which involves effects on both opioid receptors and monoamine reuptake. This dual-action mechanism indicates the medicine affects pain signals through two different, complementary pathways in the nervous system. The active metabolite, O-desmethyltramadol (M1), is significantly more potent than the parent drug itself, highlighting the body's role in activating its strongest pain-relieving effects.

General Purpose of Altadol

The general purpose of Altadol is to provide effective relief from pain by interrupting the pain signals within the central nervous system. This medication is specifically utilized in the management of pain considered moderate to moderately severe, such as following a medical procedure or severe injury. The dual-action mechanism, which targets both opioid pathways and modulates descending pain-inhibitory pathways, is clinically recognized as part of its efficacy profile when managing significant discomfort.

What side effects are possible with Altadol?

Possible Side Effects and Safety Information

Altadol contains components associated with two distinct sets of serious safety risks as defined in regulatory documents: the inherent risks of opioid medications and the risks of acetaminophen overdose.

Serious and Clinically Significant Adverse Reactions

  • Respiratory Depression: This can be life-threatening and is a risk particularly during the initiation of therapy or following a dose increase. It is especially noted in elderly, debilitated, or pediatric patients.
  • Hepatotoxicity: The acetaminophen component carries a severe risk of liver damage, liver failure, or death, especially when the maximum daily dose is exceeded or when used with other acetaminophen-containing products.
  • Addiction, Abuse, and Misuse: As an opioid, Altadol is classified as a Schedule IV controlled substance due to its potential for physical dependence, abuse, and subsequent life-threatening overdose.
  • Serotonin Syndrome and Seizures: Serotonin Syndrome is a potentially fatal condition that can occur with Altadol use, especially when taken with other serotonergic agents (such as MAOIs or SSRIs). Seizures have been reported even at recommended doses.

Common Adverse Reactions

Adverse events reported most frequently in clinical trials include effects on the Central Nervous System (e.g., dizziness, somnolence, headache) and the Gastrointestinal System (e.g., nausea, constipation, vomiting).

Population-Specific Restrictions

Contraindications include use in children under 12 years of age and in children under 18 following tonsillectomy/adenoidectomy. Caution is required in patients with severe hepatic or renal impairment, increased intracranial pressure, or a history of substance abuse. Use during pregnancy may result in Neonatal Opioid Withdrawal Syndrome.

Overdose and Emergency Response

Altadol overdose is defined by official regulatory documents as a severe, potentially life-threatening emergency primarily characterized by a dual toxicological presentation. Documented clinical manifestations often include severe Central Nervous System (CNS) depression, resulting in profound somnolence, loss of consciousness, and coma. The most critical risk is life-threatening respiratory depression and apnea, which can be fatal. Neurological outcomes linked to the drug's serotonergic activity include generalized seizures and the rapid development of Serotonin Syndrome, often accompanied by miosis or muscular hypotonicity. Accidental ingestion by children is cited as a significant risk leading to fatal overdose.

Regulators mandate that individuals seek immediate medical attention and contact emergency services immediately upon the signs of respiratory difficulty, severe sedation, or seizure activity. The official management protocol specifies the use of the opioid antagonist Naloxone to address respiratory depression; however, the label warns that this reversal is only partial and may increase the risk of seizures. Supportive measures, including airway management and anticonvulsant medication for seizure control, are essential. Extended observation and continuous monitoring in a hospital setting are required due to the prolonged effect of the drug, even after initial treatment.

Therapeutic Uses of Altadol

What Altadol Treats: Main Uses and Benefits

The primary therapeutic use of Altadol is indicated for the management of symptoms related to physical discomfort and symptoms that create noticeable physiological strain. It may be part of symptomatic management for symptoms related to physical discomfort that have become intense or disruptive.


This medication is commonly used across conditions presenting with acute episodes and those characterized by periods of heightened symptoms (e.g., chronic ongoing pain). It is relevant for easing symptoms associated with surgical recovery, various types of injuries, and symptoms that become more disruptive during flare-ups. Altadol helps address symptom clusters that may become intense or disruptive, contributing to improved comfort during periods of heightened symptoms, and may assist with maintaining functional stability.

Quick Fact: Symptomatic Support for Moderate-to-Severe Discomfort

Altadol is generally applied in scenarios where additional management of discomfort is required for symptoms ranging from moderate to severe intensity. It supports patients during episodes of heightened discomfort and assists with maintaining functional stability.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility Scope

Category Official Regulatory Statement
Populations for whom use is allowed (as stated in label): Adult patients (18 years and older) for whom use is generally established under standard labeled conditions.
Populations for whom use is not recommended (if applicable): Patients with severe hepatic or severe renal impairment ( CrCl < 30 mL/min); breastfeeding women; and patients with suicidal ideation or addiction history.
Populations for whom use is contraindicated: Patients with known hypersensitivity to the drug or opioids; patients in a state of acute intoxication (e.g., alcohol, opioids, CNS depressants); patients with significant respiratory depression or severe, unmonitored asthma; and patients concurrently taking or having recently taken Monoamine Oxidase Inhibitors (MAOIs) within 14 days.
Age-related eligibility rules: The medicine is contraindicated in children younger than 12 years of age. It is also contraindicated for post-operative pain management following tonsillectomy or adenoidectomy in children younger than 18 years.
Condition-specific eligibility rules: Uncontrolled epilepsy or seizure disorders are an absolute contraindication. Use is restricted in patients with increased intracranial pressure or head trauma.
Pregnancy and lactation eligibility status (if explicitly documented): Prolonged use during pregnancy carries a risk of Neonatal Opioid Withdrawal Syndrome; therefore, use is not recommended for a prolonged period. Use is not recommended during lactation.
Eligibility-related restrictions: Use requires caution in older adults (over 75 years) due to increased sensitivity and potential for prolonged elimination. Use is avoided in adolescents (12–18 years) with other risk factors for respiratory depression.

Eligibility Classifications (High-Level)

Official eligibility statements:

  • Altadol is contraindicated for children under 12 and for post-surgical pain management (tonsillectomy/adenoidectomy) in adolescents under 18.
  • The medicine must not be used in patients with significant respiratory depression or acute intoxication with alcohol or central nervous system depressants.
  • Use is not recommended in patients with severe hepatic or severe renal impairment.

Connection to the overall eligibility profile: Official regulatory documents define the eligible user population for Altadol by establishing a formal set of non-eligibility rules rooted in patient safety. These rules formally exclude individuals based on specific physiological states, comorbidities, age groups, and organ function status, classifying exclusions as absolute contraindications or restricted uses. The profile strictly governs who can and who cannot use the medicine according to governmental labeling.

What should I know about interactions with other medicines?

Altadol Interactions with other medicines and products

This section outlines the formally documented interaction patterns for Altadol (Tramadol Hydrochloride) as stated in authoritative government regulatory sources.


Interaction Scope

Category Description
Medicinal product categories with documented interactions Monoamine Oxidase Inhibitors (MAOIs), Serotonergic Drugs, other Central Nervous System (CNS) Depressants, CYP2D6 Inhibitors, CYP3A4 Inhibitors, and CYP3A4 Inducers.
Timing-based interaction rules MAO Inhibitors: Concurrent use is prohibited, and a 14-day washout period is required after stopping an MAOI before initiating Altadol.
Interaction-related restrictions Alcohol (Ethanol): Consumption of alcohol-containing beverages is prohibited due to the enhanced risk of profound sedation and respiratory depression. St. John's Wort: Officially documented interaction due to potential for altered metabolism and enhanced serotonergic effects.
Population-specific interaction notes Renal Impairment: Delayed elimination may lead to increased exposure of the parent drug and its active metabolite, potentially increasing the risk from co-administered interacting substances.

Official Interaction Statements

  • Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is contraindicated due to the high risk of Serotonin Syndrome and seizures.
  • Combining with other CNS Depressants, including alcohol, may result in additive effects leading to profound sedation, respiratory depression, coma, and death.
  • CYP2D6 inhibitors (e.g., Quinidine) may alter the pharmacokinetic profile, resulting in increased Altadol plasma concentration and a simultaneous reduction in the concentration of the active metabolite (M1).
  • The co-administration of CYP3A4 inducers such as Carbamazepine is not recommended because it significantly increases Altadol's metabolism, resulting in a reduced analgesic effect.

Connection to the overall interaction profile

Regulatory documents define Altadol's interaction structure through mandatory constraints related to its dual activity as an opioid agonist and a Serotonin–Norepinephrine Reuptake Inhibitor (SNRI). These constraints include formal prohibitions against specific drug classes and substances, and warnings that pharmacokinetic interactions via CYP450 enzymes can significantly modify the exposure of the drug and its active metabolite.

Mechanism of Action

Altadol, a racemic compound, exerts its effects primarily within the central nervous system through a dual mechanism of action involving both opioid and monoaminergic pathways.

Its (+)-enantiomer and the active metabolite, (+)-O-desmethyl-Altadol (M1), function as agonists at the mu-opioid receptor (MOR). Activation of the G-protein coupled mu-opioid receptor reduces intracellular cyclic adenosine monophosphate (cAMP) levels via inhibition of adenylate cyclase. This cellular modification results in the inhibition of nociceptive neurotransmitter release within the periaqueductal gray and spinal cord. M1 exhibits a higher affinity for the MOR than the parent compound.

Simultaneously, the parent drug modulates descending inhibitory pathways by functioning as an inhibitor of the serotonin and norepinephrine transporters. The (+)-enantiomer preferentially inhibits serotonin reuptake, and the (−)-enantiomer preferentially inhibits norepinephrine reuptake. This action increases the synaptic concentration of both serotonin and norepinephrine in the spinal dorsal horn, augmenting monoaminergic inhibition of afferent pain transmission.

Dosage and Administration Information

Altadol is administered either orally (as immediate-release or extended-release tablets/capsules or solution) or parenterally via intravenous (IV), intramuscular (IM), or subcutaneous (SC) injection. The regimen is typically determined by the specific formulation used, and the medication may be taken with or without food.

For immediate-release (IR) oral forms, the usual dose is 50 mg to 100 mg taken every four to six hours as needed for relief. The total dosage per day should generally not exceed 400 mg. Dosing may also begin with a slow titration starting at 25 mg once daily for patients not requiring rapid onset.

Extended-release (ER) oral forms are designed for once-daily administration and must be swallowed whole with liquid. These forms must not be crushed, chewed, split, or dissolved to maintain their intended release properties. The starting dose for an adult is typically 100 mg once daily, with dose adjustments made in increments of 100 mg every five days, not to exceed a daily maximum of 300 mg.

Specific procedural instructions apply to certain groups. For older adults (over 75 years), the daily dose is restricted to a maximum of 300 mg. Patients with severe renal impairment (creatinine clearance < 30 mL/min) require an extended dosing interval for the IR form (e.g., every 12 hours), while the ER form is generally not advised. Treatment cessation requires a gradual dose reduction (tapering) to manage procedural discontinuation symptoms.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Altadol


Evidence for use in Acute Pain

Altadol was studied for outcomes related to physical discomfort that follows medical procedures, such as surgery, or a severe injury. The core evidence for this use comes primarily from short-term Randomized Controlled Trials (RCTs) and systematic reviews. The studies monitored outcomes such as the patient-reported intensity of discomfort using standardized scales, the time to a reported change in discomfort level, and the need for rescue medication.

The research describes a substantial body of short-term data for which findings showed similar patterns in controlled clinical settings. Findings generally indicate that Altadol was observed in studies relevant in trials assessing short-term or episodic symptom patterns. Follow-up durations were limited to the initial period of recovery, and data are still emerging for the most severe forms of acute, trauma-related pain.


Evidence for use in Chronic Non-Cancer Pain

Research exploring the use of Altadol for chronic, ongoing conditions is based on different body of evidence, mainly consisting of meta-analyses and intermediate-term trials lasting up to 16 weeks. These studies explored complex conditions characterized by fluctuating or episodic manifestations, particularly in adults. Researchers examined outcomes related to daily functioning or activity level.

The overall evidence across different chronic conditions evidence quality varies across studies and the certainty remains low. Findings were mixed, and many studies reported that the changes measured in pain scores or function were sometimes minimal. The evidence landscape highlights that the consistency of findings can be uncertain due to variability in study designs and the diverse causes of chronic discomfort.

Research in Chronic Pain due to Osteoarthritis

Altadol was evaluated in studies for conditions marked by functional limitations such as chronic discomfort associated with osteoarthritis of the hip and knee. These trials typically had follow-up durations that were limited to about 12 weeks. The available data provides context but not individual predictions. The evidence shows patterns related to short-term changes, but long-term outcomes are not fully established.


Research on Long-Term Outcomes and Follow-up

Research exploring long-term outcomes and durability of findings for Altadol is significantly limited. The vast majority of high-quality Randomized Controlled Trials applied in studies examining chronic discomfort have follow-up durations that were limited to intermediate periods (e.g., three to four months). While some observational settings evaluating daily-life functioning exist for longer periods, these types of studies can only describe patterns observed in the studies; they cannot establish a definitive causal link. Consequently, long-term outcomes are not fully established.


What is Still Uncertain About Altadol Research

The research on Altadol highlights areas where certainty remains low, and where more research is needed. A primary research limitation frame is the lack of long-term evidence, particularly regarding the outcomes associated with use extending beyond a few months, especially for chronic discomfort. Furthermore, the evidence quality varies across studies, with data available for acute pain but lower certainty findings for chronic and cancer-related conditions. This ongoing uncertainty means that the research contributes to the broader evidence landscape, but does not determine whether an individual will respond similarly to the patients observed in the original studies.

Frequently Asked Questions (FAQ)

Common questions about Altadol (FAQ)


Q: How long does it take for Altadol to start working?

According to the official product information, the pain-relieving effect of Altadol typically begins within approximately one hour after administration. The maximum pain relief, or peak effect, is generally reached about two to three hours after the dose is taken.

Q: What happens if I forget a dose of Altadol?

Official information suggests the missed dose be skipped entirely. The subsequent dose would then be taken at the next regularly scheduled time, and it is advised not to take a double dose to compensate for a missed one.

Q: Can Altadol be used for cancer-related pain?

Regulatory documents indicate that Altadol is approved for the management of moderate to moderately severe pain, and the extended-release form is used for chronic pain requiring around-the-clock treatment. The prescribing information specifies its use for these general categories of pain, without specifically excluding or mentioning cancer-related pain.

Q: Is it safe to use Altadol during pregnancy?

Official prescribing information warns that prolonged use of this medication during pregnancy can lead to the newborn developing Neonatal Opioid Withdrawal Syndrome (NOWS). This is a potentially serious condition that requires specialized medical care for the baby. Official labeling states that use for an extended period during pregnancy is not recommended due to this risk.

Q: What is the difference between an immediate-release and an extended-release tablet?

The key difference lies in the release mechanism and dosing schedule. The immediate-release form is typically administered multiple times per day for as-needed pain relief. The extended-release form is designed for once-daily administration to provide a continuous, sustained level of medication for persistent, chronic pain.

Q: What should I do in the event of an overdose?

Suspected overdose requires immediate emergency medical attention as stated in regulatory guidelines. Symptoms of overdose can include severe respiratory depression (very slow or shallow breathing), pinpoint pupils, or loss of consciousness. Official safety information indicates that a medication called naloxone may be administered by healthcare professionals to reverse severe respiratory depression.

Q: What should I do if my Altadol prescription runs out?

Altadol is classified as a controlled substance, and its prescriptions are subject to refill restrictions. Because this medicine requires a gradual dose reduction (tapering) upon stopping, if a prescription is running out, contact with the prescribing healthcare professional is required for a new prescription and clinical reassessment.

Q: What is a drug take-back program and where can I find one?

Official guidance recommends drug take-back programs as the preferred method for safe disposal of unused or expired medications. These programs may include collection points at certain pharmacies or DEA-sponsored National Take Back Days. Government resources or the DEA website can be used to locate authorized collection sites.

How should Altadol be stored and disposed of?

How to Store and Dispose of Altadol?

Altadol (Tramadol Hydrochloride) must be stored and handled according to specific regulatory requirements to maintain its stability and ensure safety.

Storage Requirements

Condition Requirement
Temperature Store at controlled room temperature, generally 20 C to 25 C (68 F to 77 F). Do not freeze.
Container Keep in the original container and keep the container tightly closed.
Protection Protect the medicine from light and moisture.
Child Safety Keep Altadol out of the sight and reach of children.

Disposal

Unused or expired Altadol must be disposed of according to local requirements for pharmaceutical waste. Do not throw the medicine into wastewater or household trash unless directed by official disposal instructions, such as those provided by a drug take-back program.

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

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