Contramal LP

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Contramal LP

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 LP

Property Description
Active ingredient Tramadol hydrochloride
Form Extended-release (LP) tablet or capsule
Pharmacological class Opioid analgesic; Serotonin-Norepinephrine Reuptake Inhibitor (SNRI)
General purpose Management of moderate to moderately severe pain
Origin Synthetic (man-made)

What is Contramal LP and What Type of Medicine is It?

Contramal LP is a specific brand of a synthetic, oral medication primarily classified as an opioid analgesic (pain reliever). Its single active ingredient is Tramadol hydrochloride, a compound clinically recognized for treating moderate to moderately severe pain when simpler analgesics are insufficient. This prescription-only medicine belongs to a class of drugs that acts specifically on the central nervous system. This particular brand, Contramal LP, is designed to be long-acting, which differentiates its therapeutic profile from immediate-release versions of Tramadol sold under other names.

Composition and Form: What Does 'LP' Mean?

The 'LP' in Contramal LP stands for Long-acting or Prolonged-release, indicating it is specially formulated to release the active ingredient slowly over many hours. This medicine is manufactured as an extended-release tablet or capsule. The composition ensures that the Tramadol hydrochloride is contained within a system that regulates the rate at which the drug is absorbed into the bloodstream. This design helps maintain a stable, consistent level of the active substance over time.

General Purpose: Why is Contramal LP Designed as a Long-Acting Pill?

The primary purpose of the Contramal LP design is to provide continuous, steady pain management, such as relief for chronic, ongoing discomfort. The formulation maintains a stable therapeutic level in the body, which helps ensure that pain relief is sustained consistently throughout the day and night. Extended-release formulations are designed to deliver sustained concentrations, making them suitable for managing chronic pain that requires round-the-clock symptom control. The long-acting nature makes it uniquely suited for pain management scenarios requiring continuous relief.

Regulatory References

  1. NIH: Tramadol (oral route) - MedlinePlus

What side effects are possible with Contramal LP?

Possible Side Effects and Safety Information

The official safety profile for Contramal LP (Tramadol hydrochloride extended-release) is structured by government regulatory bodies to classify documented adverse reactions and safety constraints. These effects are organized by frequency and the System-Organ-Class (SOC) affected, such as the Nervous System and Gastrointestinal tract.


Frequency-Classified Adverse Reactions

The regulatory documents classify side effects based on incidence observed in clinical data and post-marketing experience. Very Common (ge 1/10) effects include nausea, dizziness, and somnolence (drowsiness). Reactions classified as Common (ge 1/100 to < 1/10) include headache, vomiting, constipation, dry mouth, and sweating.


Serious Adverse Reactions and Constraints

Official labels detail significant, high-severity risks. The most serious documented risk is life-threatening respiratory depression. Other serious reactions include Serotonin Syndrome, seizures/convulsions, and serious Anaphylactoid Reactions. The medicine carries a risk for the development of Opioid Use Disorder (physical and psychological dependence).

Safety-related constraints define where use is restricted. The drug should not be used in individuals with severe respiratory depression, severe hepatic or renal impairment, or in patients receiving Monoamine Oxidase Inhibitors (MAOIs). Additionally, official safety statements advise that the risk of respiratory depression is highest upon initiation of therapy and following a dose increase.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Contramal LP (Tramadol hydrochloride) is documented in regulatory sources as a medical emergency. The officially reported clinical manifestations are consistent with the medication's effects on the central nervous system, primarily including profound somnolence that may progress to a loss of consciousness or coma, along with generalized seizures (convulsions) and miosis (pinpoint pupils). Vomiting is also a documented manifestation.

Regulators require immediate medical attention for any suspected overdose. Emergency services must be contacted if the patient exhibits signs of life-threatening respiratory depression (severely slowed or stopped breathing), cardiovascular collapse (severe hypotension), or loss of consciousness. Severe outcomes explicitly listed in official documentation include respiratory arrest, cardiac arrest, and the development of Serotonin Syndrome.

Overdose management is symptomatic and supportive, focusing critically on maintaining adequate ventilation. While the opioid antagonist naloxone is used to treat associated respiratory depression, official labeling notes that its effect may be only partial and that its administration carries a documented risk of increasing the likelihood of seizures. Furthermore, standard detoxification methods like haemodialysis are not considered effective. A fatal overdose risk is documented specifically in cases of accidental ingestion by children and co-ingestion with other CNS depressants.

Therapeutic Uses of Contramal LP

What Contramal LP Treats: Main Uses and Benefits

Contramal LP is commonly used to help with symptoms related to physical discomfort over a prolonged period, focusing on supportive symptom management. It is generally used for managing moderate to moderately severe pain associated with conditions presenting with systemic or localized discomfort.

This formulation is relevant in contexts requiring around-the-clock symptom control. The long-acting nature of Contramal LP contributes to maintaining a sense of stability when symptoms are more noticeable for a prolonged period. This medication is considered relevant in contexts where additional management of discomfort is required after prior symptom approaches, and is commonly used to help with musculoskeletal discomfort and refractory pain patterns.

The primary benefit is that this steady action may help patients cope more steadily with symptom fluctuations and contributes to improved day-to-day comfort during symptomatic periods.

“This medication may assist with maintaining functional stability in situations where symptoms interfere with routine activities.”


Quick Fact: Symptom Support for Continuous Discomfort
Contramal LP is considered relevant for easing symptoms related to physical discomfort that is persistent and requires sustained symptomatic assistance over a 24-hour period. It may assist with maintaining functional stability in situations where symptoms interfere with routine activities, contributing to overall comfort.

Eligibility and Restrictions for Use

Official Eligibility for Contramal LP

Contramal LP's use is strictly defined by regulatory eligibility rules established in government labeling. The medicine is primarily indicated for Adults 18 years and older who require continuous, around-the-clock management for moderate to moderately severe pain.

Absolute Contraindications (Must Not Use):

  • Age: Children younger than 12 years of age, and individuals under 18 years following tonsillectomy or adenoidectomy.
  • Conditions: Patients experiencing significant respiratory depression or severe bronchial asthma.
  • Concurrent Use: Individuals using Monoamine Oxidase Inhibitors (MAOIs) or within 14 days of discontinuing them.
  • Acute States: Patients with acute intoxication from alcohol or other centrally acting depressant drugs, or known hypersensitivity to tramadol.

Restricted and Conditional Use: The medicine is not recommended for patients with severe renal impairment (creatinine clearance less than 30 mL/min) or severe hepatic impairment. Use in pregnancy and lactation is generally not recommended, with prolonged use in pregnancy posing a risk of Neonatal Opioid Withdrawal Syndrome. Use in older adults (over 75 years) requires greater caution, and it should be avoided in adolescents 12-18 with co-existing respiratory risk factors.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Contramal LP, which contains Tramadol hydrochloride, is subject to specific regulatory restrictions and documented pharmacokinetic and pharmacodynamic interactions.

Formal Prohibitions and Exposure Alterations

Classification Interacting Substance/Class Official Interaction Description
Contraindicated Monoamine Oxidase Inhibitors (MAOIs) Prohibited due to the documented, severe risk of Serotonin Syndrome and seizures. Use is prohibited for 14 days after MAOI therapy is stopped.
Restriction Alcohol Prohibited for co-consumption due to the significant risk of profound sedation, respiratory depression, coma, and death.

Pharmacokinetic and Pharmacodynamic Interactions

Co-administration with other substances can alter the plasma concentration of Tramadol or intensify its central effects:

  • Serotonergic Drugs (e.g., SSRIs, SNRIs, Triptans): These combinations increase the risk of Serotonin Syndrome due to additive effects on the serotonergic system, as noted in official labeling.
  • CNS Depressants: Co-use with other Central Nervous System depressants, including benzodiazepines, is associated with additive risk of profound sedation and potentially life-threatening respiratory depression.
  • CYP2D6 & CYP3A4 Inhibitors: Inhibitors like Quinidine or Ketoconazole may officially increase the parent drug (Tramadol) exposure. Inhibition of CYP2D6 can specifically decrease levels of the active M1 metabolite.
  • CYP3A4 Inducers: Inducers like Carbamazepine or the herbal product St. John’s Wort may reduce Tramadol plasma concentrations, potentially diminishing its effect.

In patients with hepatic or renal impairment, the clearance of the medicine is reduced, which can potentially exacerbate the effects of co-administered agents that affect metabolism.

Mechanism of Action

The physiological activity of Contramal LP is achieved through a dual, synergistic mechanism that acts centrally to inhibit central nociceptive signal transmission. The long-acting formulation ensures the mechanism exerts prolonged influence on biological targets. The first component is mediated by the active metabolite, O-desmethyltramadol (M1). M1 acts as an agonist at the mu-opioid receptors (muOR) in the central nervous system, which directly reduces the intensity and transmission of central nociceptive signals in the spinal cord and brain.

The second mechanism involves the parent drug, Tramadol, acting as a weak inhibitor of the neuronal reuptake of both Serotonin and Norepinephrine. This increases the availability of these neurotransmitters, increasing the modulation of descending inhibitory pathways that modulate signals attempting to ascend to the brain. The maximal physiological activity is dependent on the body's ability to metabolize the parent drug into the active M1 form via the CYP2D6 enzyme.

Dosage and Administration Information

The administration of Contramal LP, an extended-release formulation of tramadol, is defined by specific guidelines to ensure appropriate use for scheduled, continuous symptom management. The medicine is taken orally once daily. Its long-acting design means it is intended for round-the-clock administration and is not indicated for as-needed (prn) use.

The dosing regimen begins with a starting dose of 100 mg taken once per day. If dose adjustments are necessary, they are typically made in increments of 100 mg, with the maximum recommended daily dose being 300 mg. The medication may be taken without regard to food, though consistent timing, such as always taking it with a meal or always taking it without, is specified in administration instructions.

A core requirement for this extended-release product is the administration method: the tablets or capsules must be swallowed whole with liquid and must not be cut, crushed, chewed, split, or dissolved. Special instructions apply to certain populations: use is generally not recommended in patients with severe hepatic or renal impairment, and caution is advised for older adults, particularly those over 75 years of age. When the medicine is to be stopped, the dose must be gradually tapered according to a procedural schedule rather than abruptly discontinued, and concomitant use with other tramadol products is prohibited.

Recent Clinical Evidence

Research Evidence / Overview of Studies

I. Overall Findings and Study Scope

This section reviews the clinical research that has evaluated Contramal LP (a sustained-release tramadol formulation). The available evidence is based primarily on randomized controlled trials (RCTs) and long-term observational studies in patients with chronic pain.

Studies have investigated the activity of tramadol on certain biological markers related to the condition, consistent with its dual mechanism of action as an opioid agonist and a reuptake inhibitor of norepinephrine and serotonin.

II. Clinical Efficacy and Symptom Management

A. Key Outcomes in Short-Term Trials

Initial clinical trials have examined whether the use of Contramal LP was associated with changes in self-reported pain intensity and physical function. Research frequently used the Numerical Rating Scale (NRS) or Visual Analog Scale (VAS) to measure pain change over periods typically lasting 12 weeks. Findings have generally reported small but statistically significant differences in pain scores compared to placebo, although some effects have fallen below the commonly accepted threshold for minimal clinically important difference.

Research examined whether the formulation was associated with changes in inflammation markers over the course of the studies. Longer studies, lasting up to one year, evaluated the effects of the formulation over an extended period. These trials monitored participants for changes in the recurrence of symptoms.

B. Safety and Tolerability Profile

Adverse events were commonly reported in the clinical trials, consistent with opioid compounds. The most frequently reported side effects included gastrointestinal upset, nausea, dizziness, somnolence, and constipation. These events were commonly reported across the clinical trials.

Some studies have evaluated the safety of the sustained-release formulation over extended periods, including research involving participants with kidney impairment. Research in specific populations is limited, and most data come from individuals without severe co-existing health conditions. Other research has analyzed and compared findings from Contramal LP studies with data available for other treatment options, focusing on key outcomes.

Frequently Asked Questions (FAQ)

Common questions about Contramal LP (FAQ)


Q: Is Contramal LP a type of narcotic painkiller?

Contramal LP’s active ingredient, tramadol, is officially classified as an opioid analgesic, which is a type of pain reliever that acts on the central nervous system. Because of its mechanism and potential for misuse, regulatory agencies classify it as a controlled substance. The term 'narcotic' is sometimes used by the public to describe this category of medicine.


Q: How long do the pain-relief effects of Contramal LP usually last?

Contramal LP is specifically engineered as an extended-release or long-acting formulation. Official product information indicates that this long-acting design supports a once-daily regimen for sustained pain management over approximately a 24-hour period. This provides continuous relief for chronic pain.


Q: How does the 'LP' (Long-Period) mechanism of Contramal LP actually work in the body?

The 'LP' formulation uses a specific drug delivery technology to control the rate at which the active ingredient enters your bloodstream. This slow, controlled release helps to maintain a stable, consistent level of the drug in your system. This design prevents rapid fluctuations and ensures the pain relief is sustained over an extended period.


Q: Is Contramal LP habit-forming or addictive?

Official warnings state that, like other opioid compounds, Contramal LP carries a risk for the development of both physical and psychological dependence and Opioid Use Disorder (OUD). Healthcare providers should monitor patients for signs of dependence during treatment with this medication.


Q: What are the symptoms of withdrawal if I stop taking Contramal LP suddenly?

Stopping this medication abruptly can lead to symptoms of opioid withdrawal. For this reason, official drug administration guidelines emphasize that the dose must be gradually reduced (tapered) over time when treatment is ending. This gradual process is intended to minimize the potential for withdrawal effects.


Q: Why do some people feel anxious or have mood changes on Contramal LP?

Common central nervous system side effects listed in regulatory documents include dizziness, headache, and drowsiness. Official reports also document less common effects such as mood alterations and anxiety. These effects may be linked to the drug’s dual mechanism of action, which involves the reuptake of neurotransmitters.


Q: Does Contramal LP help with nerve pain (neuropathic pain)?

Contramal LP is indicated for treating moderate to moderately severe pain. Its dual mechanism of action involves the inhibition of serotonin and norepinephrine reuptake. These systems are known to modulate pain signals, which is why the drug's mechanism is sometimes relevant to nerve pain.


Q: Can you take Contramal LP with common over-the-counter pain relievers like ibuprofen?

Regulatory documents advise consulting with a healthcare professional before combining Contramal LP with any other medication, including over-the-counter products. Official product information strictly advises against using Contramal LP with any other product that contains tramadol.


Q: Does Contramal LP affect sleep patterns?

Official product information indicates that Contramal LP can affect sleep. Somnolence (drowsiness) is listed as a very common side effect. Conversely, regulatory documents also list insomnia (difficulty sleeping) as a less common adverse reaction.


Q: Can Contramal LP be used for breakthrough pain if I'm already taking it regularly?

The Contramal LP formulation is designed for scheduled, continuous pain management, often referred to as around-the-clock control. Official indications state that the long-acting tablets are not intended for 'as-needed' (prn) use, which includes the management of sudden, temporary breakthrough pain.


Q: Does Contramal LP show up on drug tests?

Yes, the active ingredient, tramadol, is an opioid analgesic and is detectable in biological samples. As a controlled substance, it is often included in drug screening panels used for medication monitoring.


Q: Can Contramal LP be used for long-term use?

Contramal LP is indicated for the continuous, around-the-clock management of pain. However, official guidelines recommend that treatment be regularly re-evaluated by a healthcare provider to ensure that the benefits continue to outweigh the risks of chronic opioid use.


Q: Is Contramal LP safe for people with a history of seizures?

Official warnings state that the use of Contramal LP is associated with an increased risk of seizures or convulsions. Use is generally not advised for people with a history of seizure disorders or those taking other medications that can increase seizure risk.


Q: How long does Contramal LP stay in your system after the last dose?

The half-life of tramadol and its active metabolite typically ranges from approximately 5 to 9 hours, according to official pharmacological data. The drug and its metabolites are primarily eliminated from the body via excretion in the urine (kidneys).


Q: Does tolerance develop quickly with Contramal LP?

Official documents recognize that tolerance may develop with chronic use. Tolerance refers to the need for a higher dose to maintain the same level of pain relief over time. This development is associated with the risk of dependence.


Q: What should I tell my dentist before a procedure if I am taking Contramal LP?

Official product information highlights the importance of notifying all healthcare providers, including dentists, about this medication. This is necessary because Contramal LP can interact with certain pain relievers, sedatives, and anesthetics that may be used during procedures.


Q: Is it mandatory to take Contramal LP with food?

According to the official administration instructions, Contramal LP may be taken without regard to food. However, it is recommended that you take the medicine at a consistent time each day, either always with a meal or always without one.


Q: Are there generic versions of Contramal LP available?

The active ingredient in Contramal LP, tramadol hydrochloride, is available in multiple generic extended-release forms. Availability of these generic options is subject to the specific prescribing regulations in your location.


Q: Is Contramal LP a controlled substance in many countries?

Yes, the active ingredient, tramadol, is designated as a controlled substance in the United States and is similarly regulated by national health authorities in many other countries. This regulation is put in place due to its potential for misuse.


Q: How is Contramal LP eliminated from the body?

Official pharmacological studies indicate that Contramal LP and its metabolized components are primarily eliminated from the body via excretion in the urine. Therefore, the clearance of the drug relies mainly on normal kidney function.


Q: Why do doctors prescribe Contramal LP instead of immediate-release Contramal?

The long-acting 'LP' formulation is prescribed when a patient requires continuous, around-the-clock pain relief. It provides steady drug levels over the day. Immediate-release formulations, by contrast, are used for acute pain episodes that require quick, but short-term, relief.

How should Contramal LP be stored and disposed of?

How to Store and Dispose of Contramal LP?

Regulatory documents outline specific requirements for the storage and disposal of Contramal LP (Tramadol Hydrochloride) to maintain its stability and prevent misuse.


Official Storage Conditions

Contramal LP must be stored at controlled room temperature, typically between 20 C and 25 C. The medicine must be kept in a closed container and protected away from heat, moisture, and direct light; it must also be kept from freezing.

As an opioid analgesic, safe storage is mandatory: the product must be stored out of the reach of children and pets. Accidental ingestion, especially by children, can result in a fatal overdose.


Official Disposal Protocol

Any unused or expired medicine must be disposed of in accordance with local requirements. The preferred method is using an official drug take-back program. If this option is unavailable, the product may be disposed of in household trash after being mixed with an undesirable substance and sealed, following guidelines from regulatory authorities.

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

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