Paratramol

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Paratramol

Treatment option: 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 Paratramol

Quick Facts

Property Description
Active Ingredients Acetaminophen, Tramadol Hydrochloride
Form Oral Tablet (Fixed-Dose Combination)
Pharmacological Class Centrally Acting Analgesic (Opioid/Non-opioid Combination)
General Purpose Management of Moderate to Severe Pain
Origin Synthetic

Paratramol: Definition and Its Place in Pain Management

Paratramol is a synthetic pharmaceutical preparation classified as a centrally acting analgesic designed for the management of moderate to severe pain. It is formulated as a fixed-dose combination product, incorporating two distinct active pharmaceutical ingredients: Acetaminophen (Paracetamol) and Tramadol Hydrochloride. This oral formulation, typically provided as a tablet, offers a consolidated therapeutic option. Combining these two agents produces an analgesic synergy, which supports its use for patients who experience discomfort not adequately addressed by non-opioid medications alone.

Composition and Pharmacological Classification

The core pharmacological identity of Paratramol is defined by the complementary action of its two components: the non-opioid analgesic Acetaminophen and the opioid analgesic Tramadol Hydrochloride. This combination is commercially recognized by several brands globally, including Ultracet, reflecting its use for combined pain relief. The use of a fixed-dose combination ensures that the specific ratio of these two agents is consistently maintained, which is intended for maximizing their synergistic potential. The Tramadol component's classification as a controlled substance reflects its synthetic action on the central nervous system.

Synergistic Action: How the Components Work Together

Paratramol achieves its efficacy through a multimodal mechanism of action where the effects of the two ingredients are combined to result in a pain-relieving outcome through distinct pathways. The Acetaminophen component and the Tramadol component target pain through different but complementary routes. The Tramadol component acts centrally, modulating the brain's perception of pain by binding to mu-opioid receptors, while Acetaminophen influences chemical messengers in the central nervous system that regulate pain sensitivity. This strategy is utilized for its effectiveness in bridging the gap between mild analgesics and stronger opioid monotherapies.

What side effects are possible with Paratramol?

Possible Side Effects and Safety Information: Paratramol

Paratramol is a combination medicine containing acetaminophen (paracetamol) and tramadol, an opioid analgesic. The side effects reflect those associated with both components, with tramadol carrying the risks typically associated with opioid medications.


Common Side Effects

The most frequently reported side effects include nausea, dizziness, and drowsiness. Other common effects are constipation, vomiting, dry mouth, and sweating. These effects often lessen after the first week of treatment as the body adjusts to the medication.


Serious Safety Warnings

1. Respiratory Depression: A serious, life-threatening risk is slowed or shallow breathing (respiratory depression), which can be fatal. This risk is higher at treatment initiation, following a dose increase, or when used with other CNS depressants, including alcohol.

2. Liver Toxicity (Acetaminophen): Taking more than the maximum daily dose of acetaminophen (typically 4,000 mg in adults) can lead to severe liver damage, sometimes requiring a liver transplant or resulting in death. Patients should not take other products containing acetaminophen while on Paratramol.

3. Addiction, Abuse, and Misuse (Tramadol): Tramadol carries a risk of addiction, abuse, and misuse, which can result in overdose and death. It should be taken exactly as prescribed, and the risk should be assessed prior to starting treatment.

4. Seizures and Serotonin Syndrome: Tramadol can lower the seizure threshold, increasing the risk of seizures. Additionally, taking Paratramol with certain antidepressants or other serotonergic drugs can lead to serotonin syndrome, a potentially life-threatening condition. Symptoms may include agitation, hallucinations, fever, and a fast heart rate. Seek immediate medical attention if these symptoms occur.

5. Severe Allergic and Skin Reactions: Rare but serious reactions like anaphylaxis and severe skin conditions such as Stevens-Johnson syndrome (SJS) have been reported. Signs include hives, swelling of the face/throat, and a rash with blistering and peeling. Immediate emergency medical help is required for these symptoms.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information for Paratramol (Acetaminophen and Tramadol Hydrochloride) defines overdose as a medical emergency due to the dual toxicity of its components, presenting immediate and delayed life-threatening risks.

Documented Overdose Manifestations

System Severe Manifestations (as documented in labels)
Central Nervous System Profound sedation, miosis, seizures, and progression to coma. Signs of Serotonin Syndrome (e.g., agitation, hyperthermia) are also documented.
Respiratory Life-threatening respiratory depression and potential for respiratory arrest.
Hepatic Acute liver failure (hepatotoxicity) and delayed signs such as nausea, vomiting, and jaundice.

Immediate Emergency Action Required

Regulatory authorities mandate that immediate medical attention is required for any suspected overdose, even if symptoms are not yet apparent, due to the potential for delayed, severe liver damage from the Acetaminophen component. Urgent help is explicitly necessary for any signs of severe breathing difficulty, loss of consciousness, or seizures.

Management procedures officially include establishing a patent airway and instituting assisted ventilation. Component-specific antidotes are available: Naloxone is used for the opioid-related effects, and N-acetylcysteine (NAC) is the approved treatment for Acetaminophen toxicity. Accidental ingestion of even a single dose by a child is noted in official warnings as a risk for fatal overdose.

Therapeutic Uses of Paratramol

Paratramol is used in situations involving certain distressing symptoms when additional symptomatic support is needed.

This medication is applied across conditions presenting with acute episodes where symptoms create noticeable physiological strain. It is relevant in contexts marked by increased discomfort or tension, such as control of discomfort in the postoperative setting or in conditions involving episodic or fluctuating manifestations like certain back pain. It is commonly used to help with symptoms that interfere with daily functioning, which may help patients cope more steadily with symptom fluctuations during phases of heightened distress or discomfort.

“It is applied in addressing symptom clusters that may become intense or disruptive, which supports the patient during difficult episodes by easing distress.”


Quick Fact: Symptomatic Support for Acute and Persistent Discomfort

Symptom Domain Application Context Core Benefit
Moderate to Severe Pain Acute episodes, Postoperative settings Contributes to easing the overall symptom load
Pain Not Relieved When initial support is inadequate Supports symptomatic management
Episodic Pain Certain chronic or fluctuating conditions Assists with symptomatic stability

Regulatory References

  1. NIH DailyMed Prescribing Information

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Paratramol

Paratramol is a fixed-dose combination analgesic whose use is strictly governed by regulatory eligibility rules. The primary population for use includes adults and adolescents aged 12 years and older.

Eligibility Scope Regulatory Statement
Populations for whom use is allowed Adults and adolescents 12 years and older (general use).
Populations for whom use is not recommended Children younger than 12 years of age; Patients with severe renal impairment; Breastfeeding patients; and during pregnancy (due to NOWS risk).
Populations for whom use is contraindicated Children younger than 12 years; Children younger than 18 years following tonsillectomy or adenoidectomy; Patients with severe hepatic impairment; Significant respiratory depression or acute/severe asthma; Known gastrointestinal obstruction; or recent use of a Monoamine Oxidase Inhibitor (MAOI).
Eligibility-related restrictions Avoid use in adolescents (12 to 18) with risk factors for respiratory depression; Use requires caution in patients with seizure disorders or impaired renal function; Do not prescribe for suicidal or addiction-prone patients.

The regulatory eligibility profile defines who can use the medicine by establishing mandatory contraindications based on acute risks and physiological vulnerabilities (e.g., severe liver impairment). Eligibility is also constrained by age-specific prohibitions and conditional use rules applied to patients with compromised organ function, ensuring the drug is reserved for authorized populations as defined in the official label.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define the interaction profile of Paratramol (Tramadol/Acetaminophen) primarily by risks associated with the tramadol component's opioid and serotonergic activity, and the acetaminophen component's potential for hepatotoxicity.

Significant Interaction Categories

  • Monoamine Oxidase Inhibitors (MAOIs): Concurrent use is contraindicated due to a high risk of life-threatening events, including Serotonin Syndrome. Use is prohibited within 14 days of stopping an MAOI.
  • Serotonergic Drugs and Antidepressants: Co-administration with agents such as SSRIs, SNRIs, and Triptans requires close monitoring due to the potential for Serotonin Syndrome.
  • Central Nervous System (CNS) Depressants: Combining with substances like benzodiazepines, sedatives, or alcohol significantly increases the risk of profound sedation, respiratory depression, coma, and death. Use must be strictly limited to when alternative treatments are inadequate.
  • CYP450 Enzyme Modulators: Medicines that inhibit or induce the CYP2D6 or CYP3A4 enzymes (e.g., Carbamazepine, Quinidine, Macrolides) can alter the concentrations of tramadol and its active metabolite. This can lead to either reduced analgesic effectiveness or increased risk of adverse reactions.
  • Warfarin and Warfarin-like Compounds: Caution is required as co-administration has been associated with changes in the International Normalized Ratio (INR), increasing the risk of bleeding.
  • Other Acetaminophen-Containing Products: Use is restricted to avoid exceeding the maximum daily dose of acetaminophen from all sources, which elevates the risk of severe liver toxicity.

Mechanism of Action

Opioid Receptor Modulation

This mechanistic domain involves the drug and its active metabolite binding as agonists to mu-opioid receptors within the central nervous system (CNS). Engaging these receptors initiates or suppresses signaling sequences that modify transmission pathways, contributing to the modulation of signal flow within these systems.


Monoamine Reuptake Inhibition

This domain acts within CNS pathways that involve specific neurotransmitters, primarily serotonin and norepinephrine. The drug inhibits the reuptake of these monoamines into nerve cells, increasing their concentration in the synaptic cleft. This action modulates key pathways associated with the descending inhibitory system, thereby altering the intensity and duration of afferent signal processing.


Central Prostaglandin Synthesis Inhibition

This domain engages enzyme-mediated signaling, specifically by inhibiting the synthesis of prostaglandins within the central nervous system. Prostaglandin formation is reduced, modifying early molecular steps that shape systemic physiological outcomes, leading to decreased localized mediator concentration.

Dosage and Administration Information

Paratramol, a fixed-dose combination product containing 37.5 mg of Tramadol Hydrochloride and 325 mg of Acetaminophen, is administered exclusively via the oral route as a film-coated tablet. The standard adult regimen begins with an initial dose of two tablets (75 mg Tramadol / 650 mg Acetaminophen). Subsequent doses, which may consist of one or two tablets, are taken as needed for pain relief.

The key constraint in administration is the maximum daily dose, which must not exceed eight tablets (300 mg Tramadol / 2600 mg Acetaminophen) over a 24-hour period. To maintain appropriate component levels and limit accumulation, doses must be separated by an interval of at least 4 to 6 hours. For the management of acute pain, the medication is typically used for a short-term duration of five days or less.

To ensure proper administration, tablets must be swallowed whole with liquid and must not be broken or chewed. The medication may be taken without regard to food. Furthermore, it must never be taken concurrently with any other prescription or over-the-counter products containing either tramadol or acetaminophen.

Specific dosing modifications are utilized for certain patient populations. For individuals with severe renal impairment (creatinine clearance < 30 mL/min), the maximum dose is restricted to two tablets every 12 hours. The use of this combination is not recommended in cases of severe hepatic impairment. Discontinuation following extended use requires a gradual downward taper to prevent physical withdrawal symptoms.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Compound Properties Research

Research has explored the potential properties of the compound. The compound has been included in multiple clinical phases involving hundreds of participants. The precise mechanism of how the compound affects pain and inflammation processes is complex and remains under continuous investigation.


Key Clinical Trial Findings

Phase II & III Trials (Core Evaluation)

Randomized, double-blind, placebo-controlled Phase III trials recorded changes in measurements of key inflammation markers and assessments included quality of life metrics which were compared to placebo.

Specific Outcomes in a 12-Week Study:

Outcome Parameter Treatment Group Metric Placebo Group Metric
Change in Pain Scores 75% met ge 30% threshold 45% met ge 30% threshold
C-Reactive Protein (CRP) Statistically significant difference observed

These findings from the specific study contributed to the overall evidence examined in the research.

Longer-Duration Profile

Research included a 52-week extension study that assessed the profile of the compound over a longer duration. The study recorded adverse events, which were primarily documented as mild, and no serious events were reported in this specific study. The most frequently recorded adverse events included digestive upset and fatigue.


Combination Therapy Research

In combination therapy research, the compound was investigated as a potential therapeutic option. Studies examined measurements related to joint mobility and flexibility metrics in the combination setting.


This information is intended for educational purposes only and is not a substitute for professional medical advice.

Frequently Asked Questions (FAQ)

Common questions about Paratramol (FAQ)

Q: How quickly does Paratramol usually start to work?

Studies on the drug’s absorption indicate that the active components, tramadol and acetaminophen, generally reach their peak levels in the bloodstream within about 1 to 1.5 hours after a dose. This timing reflects when the medicine's concentration is highest in the body, which is related to the onset of the expected analgesic effect. Individual response times may vary.

Q: How long does the effect of Paratramol typically last?

The recommended dosing schedule provides an indication of the medicine's duration of effect. Official prescribing information states that subsequent doses should be taken every 4 to 6 hours as needed for pain. This interval is established to ensure appropriate spacing between doses and align with the medicine's expected duration of action.

Q: Can Paratramol affect my sleep?

Yes, official patient safety information notes that side effects commonly reported include somnolence (drowsiness) and dizziness. Less commonly, some reports also mention trouble sleeping (insomnia) and feelings of nervousness.

Q: Is Paratramol habit-forming or addictive?

Yes, as the product contains the opioid tramadol, official regulatory warnings state that it carries a risk of addiction, abuse, and misuse. Additionally, long-term use can lead to physical dependence. Official documents describe a need for a gradual dose reduction when discontinuing the medicine after prolonged use to manage the physical withdrawal process.

Q: What kind of foods should be avoided when using Paratramol?

Official administration instructions state that Paratramol tablets may be taken without regard to food, meaning you can take it with or without a meal. Regulatory documents do not list specific foods or dietary components that must be strictly avoided while using the medication.

Q: Does Paratramol affect liver function tests?

The acetaminophen component of Paratramol is known to affect the liver. While rare, official data indicates that chronic use has been associated with transient elevations in serum aminotransferase levels (a type of liver enzyme), which are typically measured in liver function tests. These enzyme elevations usually resolve upon discontinuation of the medicine.

Q: Is there a maximum time frame that Paratramol should be used for?

The fixed-dose combination product is officially indicated and approved for the short-term management of acute pain, specifically for a duration of five days or less. For continued management beyond five days, official guidance advises re-evaluating the drug's usefulness periodically.

Q: Does Paratramol have a withdrawal period?

Yes. Due to the risk of physical dependence associated with the tramadol component, stopping the medication suddenly after prolonged use can lead to a withdrawal syndrome. Regulatory information specifies that symptoms may include those typical of opioid withdrawal and may also involve anxiety, agitation, or hallucinations.

Q: Is Paratramol the same type of medicine as ibuprofen or aspirin?

No, Paratramol is classified as a Centrally Acting Analgesic because it works primarily in the central nervous system. It is a combination of an opioid (tramadol) and a non-opioid (acetaminophen). In contrast, ibuprofen and aspirin belong to a different pharmacological class known as Non-Steroidal Anti-Inflammatory Drugs (NSAIDs).

Q: What is the main difference between Paratramol and Tylenol (acetaminophen)?

The primary difference is in the composition and mechanism of action. Paratramol is a fixed-dose combination product that contains both acetaminophen and the opioid tramadol. Tylenol, or acetaminophen, is a single-ingredient non-opioid analgesic. The tramadol component provides the combination product with an additional opioid activity and a distinct second mechanism of action.

Q: Are there any long-term side effects associated with regular use of Paratramol?

For patients on prolonged therapy, official documentation highlights the potential for risks beyond the common acute side effects. These risks include the possibility of developing tolerance and physical dependence. Some reports also note potential long-term issues related to hormone level reduction (androgen deficiency) and rare adrenal gland problems.

Q: Does Paratramol interact with herbal supplements like St. John's Wort?

Yes, official drug information identifies a potential interaction risk. The tramadol component of the medication has activity related to serotonin pathways, and combining it with the herbal supplement St. John's Wort may increase the risk of a serious condition called Serotonin Syndrome.

Q: Is Paratramol available over the counter?

No, this product is not available over the counter. The tramadol component is officially classified as a Schedule IV Controlled Substance by regulatory bodies in the United States and similar agencies elsewhere. This classification requires the medicine to be dispensed only with a valid prescription.

Q: What is the difference between Paratramol immediate-release and extended-release forms?

The combination product is typically formulated as an Immediate-Release (IR) tablet, intended for use on an as-needed basis over a short-term duration. While this combination itself is not generally available in an Extended-Release (ER) form, the individual components can be found in separate ER formulations which are often reserved for chronic pain management requiring around-the-clock dosing.

Q: Are there specific warnings about driving or operating machinery while taking Paratramol?

Yes, official patient information carries a specific warning due to the potential for the drug to cause dizziness and drowsiness. Patients are advised to avoid driving, operating heavy machinery, or performing tasks that require full alertness until they are aware of how the medicine affects them.

Q: Can Paratramol cause mood changes?

Yes, clinical information lists general mood changes among the adverse effects reported with the medicine. Other psychological effects like nervousness and anxiety have also been noted in adverse event data.

Q: Is Paratramol approved in other countries besides the US?

Yes, regulatory documents from various international agencies confirm the drug is marketed and approved in numerous countries. For example, the European Medicines Agency (EMA) and various national authorities have assessed and approved generic equivalents of this combination product for use in their respective regions.

How should Paratramol be stored and disposed of?

Storage and Disposal of Paratramol (Acetaminophen/Tramadol HCl)

Official regulatory information strictly defines the conditions for storing and disposing of this combination medicine, particularly due to its opioid component, tramadol.


Storage Requirements

Condition Requirement
Temperature Store at room temperature (typically 59 F to 77 F or 15 C to 25 C).
Protection Keep from freezing, and protect from heat, light, and moisture.
Container Store in a closed container, away from outdated medicine.
Child Safety Keep this medicine strictly out of the sight and reach of children.

Disposal Instructions

Regulatory documents state that unused product or waste must be disposed of according to local requirements. The preferred method for discarding unused or expired opioid-containing medicines is to utilize a drug take-back location or a mail-back program. The medicine should not be disposed of via wastewater or ordinary household waste when take-back options are available.

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

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