Contramal

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Contramal

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 Contramal

Property Description
Active Ingredient Tramadol Hydrochloride
Pharmacological Class Centrally acting opioid analgesic
Forms Injection solution, capsules, tablets (including sustained-release), suppositories
Common Use Management of moderate to moderately severe pain
Origin Synthetic compound

What Type of Medicine is Contramal and Its Active Ingredient?

Contramal is a pharmaceutical preparation containing the active ingredient Tramadol Hydrochloride (HCl), which is officially classified as a centrally acting opioid analgesic. This medication is a synthetic opioid, meaning its chemical structure is manufactured in a laboratory, distinguishing it from natural opiates. As a single-ingredient product, it is generally reserved for situations where non-opioid pain relievers are deemed ineffective. Other common trade names containing the same formulation include Ultram and Tramal, reflecting the widespread clinical recognition of the molecule.

How is Tramadol Different from Other Analgesics, and What is its General Purpose?

Tramadol Hydrochloride achieves its general therapeutic purpose of pain relief through a distinctive dual mechanism of action that is pharmacologically supported by extensive clinical evidence. Its action involves both binding to the mu-opioid receptors in the central nervous system and simultaneously inhibiting the reuptake of the neurotransmitters norepinephrine and serotonin. This dual function is clinically recognized for providing effective pain management.

What Are the Available Forms of Contramal?

Contramal is supplied in various pharmaceutical preparations to facilitate different routes of administration. These forms include a solution for injection (for parenteral use), standard capsules, suppositories, and the distinguishing feature of sustained-release tablets. The sustained-release formulation is a key differentiator, as it is specifically designed to provide a longer duration of action suitable for the continuous management of ongoing moderate to moderately severe pain in adult patient populations. The availability of both oral and injectable solutions provides important flexibility for clinicians.

Regulatory References

  1. centrally acting opioid analgesic
  2. pain relief
  3. pharmaceutical preparations
  4. solution for injection
  5. capsules
  6. suppositories
  7. sustained-release tablets

What side effects are possible with Contramal?

Contramal, which contains the active ingredient tramadol, is an opioid analgesic and carries risks associated with this class of medication, including the potential for dependence, abuse, and misuse. Patients should be monitored closely for signs of addiction, and the medication should be tapered gradually when stopping use to prevent withdrawal symptoms.

Common Side Effects

Many patients experience side effects, particularly when first starting treatment. These are usually mild and may include:

System Side Effect
Central Nervous System Dizziness, drowsiness, headache
Gastrointestinal Nausea, vomiting, constipation, dry mouth
Other Sweating

Serious Warnings and Precautions

Contramal may cause serious, potentially life-threatening side effects. Seek immediate medical attention if you experience signs of:

  • Respiratory Depression: Slowed, shallow, or difficult breathing. This risk is increased, especially when taken with other central nervous system depressants, including alcohol.
  • Serotonin Syndrome: A rare but serious condition. Symptoms may include agitation, hallucinations, rapid heartbeat, fever, sweating, muscle stiffness, and severe nausea/vomiting.
  • Seizures: Tramadol can lower the seizure threshold. The risk is higher at higher doses or in patients with pre-existing seizure disorders.
  • Allergic Reaction: Swelling of the face, lips, tongue, or throat; hives, or severe rash.

Contraindications and Risk Groups

Contramal is generally contraindicated in patients with:

  • Severe breathing problems, such as severe asthma.
  • Recent use of monoamine oxidase inhibitors (MAOIs) or other centrally acting analgesics.
  • A blockage in the stomach or intestines (paralytic ileus).

Use with extreme caution in patients with a history of substance abuse, head injury, increased intracranial pressure, or severe kidney/liver impairment. Due to the risk of dizziness and drowsiness, patients should avoid driving or operating heavy machinery until they know how the medication affects them.

Overdose and Emergency Response

Contramal (Tramadol Hydrochloride) overdose carries the risk of serious, life-threatening, or fatal outcomes documented in official regulatory labeling. Immediate medical attention must be sought for any suspected overdose or accidental ingestion.

Documented Overdose Presentations

The clinical presentation involves severe effects on the Central Nervous System (CNS) and respiratory systems. Manifestations include profound sedation, stupor, and coma. The most severe outcome is life-threatening respiratory depression, which can progress to respiratory and cardiovascular arrest. Other formally documented presentations include seizures/convulsions, severe hypotension, and pupillary constriction (miosis).

Required Emergency Response

Regulators specify that the opioid antagonist Naloxone should be administered to reverse the opioid-induced respiratory depression. Supportive management measures are also required, including maintaining a clear airway and administering specific medication (e.g., benzodiazepines) to control overdose-related seizures, which Naloxone may not reverse.

Specific Risks in Overdose

Official labeling contains a critical warning that accidental ingestion of even a single dose, especially by a child, can result in a fatal overdose. Furthermore, the risk of life-threatening respiratory depression is heightened in certain populations, including ultra-rapid metabolizers and elderly or debilitated patients.

Therapeutic Uses of Contramal

This medication is commonly used for managing moderate to moderately severe pain in situations where additional management of discomfort is required.

What Contramal Treats: Main Uses and Benefits

Contramal may be part of symptomatic management used to address symptoms related to physical discomfort across several symptomatic domains. It is often considered relevant in clinical settings that involve acute or unstable symptom patterns, such as post-operative discomfort or pain from a serious injury. It is commonly used to help with symptoms that interfere with daily functioning, providing supportive relief when symptoms become more noticeable.

This medication is also used for managing conditions characterized by recurrent or episodic manifestations, like pain associated with osteoarthritis or certain types of lower back issues. It contributes to easing the overall symptom load associated with persistent or escalating pain, helping patients cope more steadily with difficult acute episodes and assisting with maintaining functional stability.


Quick Fact: Relief for Persistent Symptoms
Contramal is relevant when symptoms create noticeable physiological strain and supportive symptom management is appropriate, assisting with maintaining functional stability during periods of discomfort.

Regulatory References

  1. MedlinePlus Drug Information on Tramadol

Eligibility and Restrictions for Use

Contramal (Tramadol Hydrochloride) eligibility is strictly defined by regulatory authorities based on age, existing medical conditions, and physiological status.

Contraindicated Populations

Contramal is contraindicated in patients with: acute intoxication (alcohol, hypnotics, opioids); significant respiratory depression or acute/severe asthma; known gastrointestinal obstruction; and concurrent use of MAO inhibitors or use within the last 14 days [FDA, SmPC].

Age- and Condition-Based Restrictions

Population Eligibility Status
Children under 12 years Contraindicated for all uses [FDA]
Adolescents under 18 Contraindicated post-tonsillectomy/adenoidectomy [FDA]
Severe Renal/Hepatic Impairment Not Recommended (Extended-release forms) [FDA]
Pregnancy/Lactation Not Recommended; use in pregnancy carries a risk of Neonatal Opioid Withdrawal Syndrome [FDA]

Eligibility is further restricted for individuals with a history of suicidal tendencies or drug dependence, where the medication is advised to be avoided or used only under strict medical supervision [FDA, SmPC]. Older adults (over 75 years) require caution due to prolonged drug elimination [SmPC].

What should I know about interactions with other medicines?

Interactions with other medicines and products — official regulatory information for Contramal

Interaction Scope

Property Content
Medicinal product categories with documented interactions Monoamine Oxidase Inhibitors (MAOIs), Serotonergic Drugs, Central Nervous System (CNS) Depressants, Other Tramadol Products, Drugs that lower the seizure threshold, CYP2D6 Inhibitors, CYP3A4 Inhibitors, CYP3A4 Inducers.
Specific interacting medicines (if explicitly listed) Carbamazepine, Alcohol, St. John’s Wort (herbal product).
Mechanistic basis of interactions (only if stated in label) Pharmacokinetic alteration (CYP2D6- and CYP3A4-mediated metabolism); Pharmacodynamic reinforcement (additive CNS depression and enhanced serotonergic effects).
Timing-based interaction rules (if applicable) Must not be used concurrently with MAOIs, nor within a mandatory 14-day interval of stopping MAOIs.
Population-specific interaction notes (if applicable) Severe Hepatic Impairment and Creatinine Clearance <30 mL/min (metabolism and clearance are affected, requiring restrictions on extended-release formulations).
Interaction-related restrictions Do not co-administer with MAOIs; Do not use with other tramadol-containing products; Co-administration with alcohol is restricted.

Interaction Classifications (High-Level)

Property Content
Interaction severity classification (as defined in official documents) Contraindicated (MAOIs, other tramadol products, alcohol in acute intoxication); Serious/Clinically Significant (Serotonergic drugs, CNS depressants, CYP inhibitors/inducers).
Regulatory basis (EMA / FDA / etc.) Based on FDA Prescribing Information and DailyMed monographs, reflecting official regulatory assessment.
Interaction-context constraints (as defined in official documents) Administration restrictions (14-day washout period for MAOIs); Co-administration prohibitions (alcohol, other opioids, psychotropics in acute intoxication); Exposure risk notes (altered metabolism in hepatic impairment).

Official interaction statements:

  • Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is a formally contraindicated combination, requiring a mandatory 14-day separation period.
  • Combining Contramal with other serotonergic drugs or CNS depressants increases the officially documented risk of seizures and respiratory depression due to pharmacodynamic reinforcement.
  • Inhibitors of CYP2D6 or CYP3A4 may cause a pharmacokinetic interaction leading to an increase in tramadol plasma concentrations and/or a decrease in the active M1 metabolite.
  • The CYP3A4 inducer Carbamazepine is noted to increase metabolism, which significantly reduces the analgesic effect of tramadol, and its use is not recommended.
  • Restrictions on extended-release use apply to patients with severe hepatic impairment or creatinine clearance <30 mL/min due to altered drug metabolism and clearance.

Connection to the overall interaction profile (2–4 sentences): Official regulatory documents define the product's interaction structure primarily through two key mechanisms: pharmacodynamic reinforcement involving serotonergic and CNS depressant effects, and pharmacokinetic alteration centered on the CYP2D6 and CYP3A4 metabolic pathways. This structure establishes several mandatory constraints, including formal contraindications with MAOIs and prohibitions against concomitant use with other CNS depressants and other tramadol products, as explicitly required in the regulatory labeling.

Mechanism of Action

Contramal, containing tramadol, modulates central nervous system signaling through a dual mechanism involving opioid and monoaminergic pathways. The parent compound, tramadol, and its primary active metabolite, O-desmethyltramadol (M1), interact with the mu-opioid receptor (MOR), a G-protein-coupled receptor. Tramadol functions as a weak MOR agonist, while M1 exhibits a significantly higher affinity and acts as a stronger MOR agonist.

Activation of the MOR inhibits adenylate cyclase activity, thereby decreasing intracellular levels of cyclic adenosine monophosphate (cAMP). This leads to the modulation of ion channel function, specifically promoting potassium efflux and inhibiting calcium influx, which consequently reduces neuronal excitability and neurotransmitter release.

Concurrently, both tramadol enantiomers weakly inhibit the reuptake of the monoamines norepinephrine (NE) and serotonin (5-HT) by blocking their respective neuronal transporters (NET and SERT). This inhibition elevates the concentration of NE and 5-HT in the synaptic cleft, enhancing the activity of descending inhibitory pathways within the spinal cord. The combined agonism at the MOR and the inhibition of monoamine reuptake result in the modulation of somatosensory processing at the system level.

Dosage and Administration Information

How to Use Contramal: Official Administration Guidelines

Contramal (Tramadol Hydrochloride) is administered through several approved routes, primarily oral and parenteral (Intravenous, Intramuscular, or Subcutaneous injection). The method of administration is strictly tied to the specific pharmaceutical form being used.

Dosing and Schedule Patterns

The dosage regimen is determined by the formulation type. Immediate-Release (IR) forms are typically dosed between 50 mg and 100 mg per administration and are intended for use every 4 to 6 hours as required. Upward dose adjustments may begin as low as 25 mg every three days. The authorized maximum daily dose for IR formulations is 400 mg. Conversely, the Extended-Release (ER) forms are typically started at 100 mg and are taken once daily to maintain continuous systemic exposure. Both oral forms may be taken with or without food.

Special Procedural Conditions
Extended-release tablets must be swallowed whole and must not be crushed, chewed, split, or dissolved to protect the integrity of the controlled-release mechanism.

Population-Specific Adjustments

Official labeling requires specific dose modifications for certain populations. For older adults (over 75 years), the maximum daily dose for IR forms may be restricted to 300 mg, and the dosing interval may be extended. Patients with severe renal impairment (creatinine clearance < 30 mL/min) are generally restricted to a maximum of 200 mg per day with the dosing interval increased to 12 hours. The medication should be used for the shortest duration consistent with treatment goals, and discontinuation involves a gradual dose taper.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Contramal

Evidence for Use in Acute Pain

Research has explored Contramal for managing acute, short-term pain by using single-dose models and short-term randomized controlled trials (RCTs). These studies were conducted during periods of increased symptom activity, such as after surgical procedures. Researchers studied outcomes related to physical discomfort by measuring endpoints like pain intensity scores and recording the need for additional medication over defined, short time intervals. Findings describe patterns observed in these studies, including measurements of outcomes related to perceived discomfort. The current research structure provides limited information for long-term outcomes or repeated dosing beyond a few days; follow-up durations were limited, often to just 24 hours.


Evidence for Use in Chronic Musculoskeletal Pain

Studies monitored how the medicine was used in chronic pain conditions, particularly those characterized by fluctuating or episodic manifestations, such as osteoarthritis and persistent low back pain. This research base includes Randomized Controlled Trials (RCTs) summarized in larger Systematic Reviews and Meta-analyses. Studies explored outcomes reflecting daily functioning or activity level, using tools like physical function scales. The certainty remains low to moderate across the comprehensive reviews, and some analyses of the measured pain scores reported patterns that were sometimes described as having a limited scope. Follow-up durations were limited, typically running up to three months.


Key Limitations and Areas of Research Uncertainty

Research has also examined the medicine's use in pain associated with nerve conditions, such as painful diabetic neuropathy, but the evidence is limited, and its quality is frequently rated as low. For all indications, long-term effects are not fully established due to limited follow-up duration in most trials. Comparative evidence is lacking for specific patient subgroups that may respond differently, such as older adults, and data for certain groups remain insufficient. The data show patterns related to symptom change under study conditions, but comparative evidence is lacking against key alternatives in certain scenarios. Research provides context but not individual predictions, and the findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Contramal (FAQ)

Q: Can Contramal cause sleep problems or insomnia?

Official drug information mentions potential effects on the central nervous system, including drowsiness (somnolence) and dizziness. Although insomnia (the inability to sleep) may not be listed as a common side effect in all primary labeling, the drug's dual action is known to affect systems that regulate wakefulness.


Q: Do people develop a tolerance to Contramal over time?

Regulatory documents officially warn users about the risk of addiction, abuse, and misuse associated with this medication. They also require that dosage be gradually reduced (tapered) when stopping use to prevent withdrawal symptoms. The regulatory focus on dependence and withdrawal is closely connected to the pharmacological concept of tolerance.


Q: Can Contramal affect mood or cause feelings of depression?

Official information states the medication may cause changes in mood or nervousness as potential undesirable effects. The drug's mechanism involves neurotransmitters that help regulate mood. However, depression itself is not typically listed as a common side effect in the primary regulatory information.


Q: How often do people report feeling 'foggy' or having trouble concentrating on Contramal?

Official product information lists common central nervous system side effects such as drowsiness, dizziness, and headache. These effects are generally recognized as potentially impairing cognitive function, which can be perceived by patients as having difficulty concentrating or feeling 'foggy'.


Q: What kind of specialist usually prescribes Contramal?

Regulatory documentation states that this medication is intended to be prescribed by healthcare professionals who are knowledgeable about the use of opioids and how to manage the associated risks. The official documents do not restrict the prescribing of Contramal to a single medical specialty.


Q: Is there a generic version of Contramal available?

Yes. Contramal is a brand name for the active ingredient, which is Tramadol Hydrochloride. Regulatory bodies like the U.S. FDA have approved and list generic versions of this product for marketing.


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

Official regulatory guidance regarding a missed dose of a regularly scheduled medication is typically to take the dose as soon as it is remembered. However, if it is almost time for your next scheduled dose, the guidance is generally to skip the missed dose and resume the regular schedule. Regulatory information specifies that a double dose should never be taken to make up for a missed dose.


Q: Why is Contramal restricted in some countries?

The active ingredient, tramadol, is subject to national and international controls due to its potential for abuse and misuse. For example, it is designated as a Schedule IV controlled substance in the United States. This classification places restrictions on how the drug is prescribed, handled, and dispensed to minimize the risk of diversion.


Q: Can people who have recovered from addiction take Contramal?

Regulatory documents advise that the drug must be used with significant caution in individuals with a personal or family history of substance abuse or addiction. The official guidance emphasizes that the prescribing healthcare professional must carefully weigh the risks and benefits due to the inherent potential for misuse.


Q: Why is Contramal considered a Schedule IV drug in the U.S. (or similar class elsewhere)?

The drug was placed into Schedule IV of the Controlled Substances Act (CSA) because regulatory agencies determined it has a currently accepted medical use for pain management. This scheduling indicates a low potential for abuse relative to Schedule III drugs, and that abuse may lead to only limited physical or psychological dependence.

How should Contramal be stored and disposed of?

Contramal (Tramadol) must be stored under specific environmental and security conditions to maintain product stability and prevent accidental exposure.

  • Storage Temperature: Store the product at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F), with temporary excursions permitted up to 30 C.
  • Protection Requirements: The medicine must be protected from light and moisture and kept in a tight, light-resistant container. The solution for injection must be protected from freezing.
  • Child-Safety Mandate: As an opioid, Contramal must be stored securely, out of the sight and reach of children, in a locked cabinet or inaccessible location.
  • Disposal Instructions: Disposal of unused or expired medicine must follow local regulations. The preferred method is using an authorized drug take-back program. Failing that, specific procedures are required for discarding potent opioids to prevent harm.

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

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