Setamol

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Medically reviewed

Rosario Oropesa

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 Setamol

Property Description
Active ingredient Acetaminophen (Paracetamol)
Form Tablet, Capsule, Oral Solution, Suppository, Intravenous Solution
Pharmacological class Analgesic, Antipyretic (Non-opioid)
Common purpose Relief of mild-to-moderate pain and reduction of fever
Origin Synthetic (P-Aminophenol Derivative)

What Type of Medicine is Setamol (Acetaminophen)?

Setamol is a medicinal product whose active ingredient is Acetaminophen, scientifically known by its International Nonproprietary Name (Paracetamol). This drug is classified pharmacologically as a non-opioid analgesic and an antipyretic, placing it within the category of synthetic compounds known as P-Aminophenol Derivatives. The fundamental identity of Acetaminophen has been recognized for decades, characterized by established pharmacological action profiles. Unlike many prescription-only medications, Setamol is often positioned as an over-the-counter (OTC) drug, making it readily accessible for common, self-limiting symptoms.


Primary Purpose and General Benefit

The general purpose of Setamol is to provide effective, symptomatic relief from mild-to-moderate pain and to aid in the reduction of fever. Acetaminophen is included on essential medicines lists for these primary uses. The benefit of Setamol is demonstrated in common use scenarios, such as alleviating discomfort associated with headaches or reducing elevated body temperature during a cold. This action confirms its role as a versatile first-line treatment for basic pain and fever management. Notably, this mechanism differs from non-steroidal anti-inflammatory drugs (NSAIDs) because it generally lacks significant anti-inflammatory effects throughout the body.


Forms, Formulations, and Flexibility

Setamol is produced in a wide variety of dosage forms to suit patient needs, which is a key distinguishing factor of this INN. These forms include traditional tablets and capsules, alongside liquid preparations such as oral solutions and suspensions (the latter being specifically formulated for easy administration to children). The availability of these multiple pharmaceutical preparations ensures the drug can be administered through various routes of administration, including oral and rectal use.

Regulatory References

  1. World Health Organization

What side effects are possible with Setamol?

Possible Side Effects and Safety Information

Setamol (Acetaminophen/Paracetamol) has an officially documented safety profile characterized by adverse reactions classified according to their frequency and the system-organ class they affect, as defined in regulatory documents like the FDA Prescribing Information and the EMA SmPC. The most critical safety concern is hepatotoxicity, which involves liver damage that can progress to acute liver failure, primarily when the maximum daily dose is exceeded (overdose) or during prolonged, chronic use.

Adverse Reaction Classifications

Adverse reactions are grouped into categories such as common, uncommon, and rare events. Common reactions, particularly in certain formulations, may include nausea and vomiting. Less common or rare effects involve the skin and subcutaneous tissue (e.g., rash, pruritus) and, rarely, blood and lymphatic system disorders (e.g., thrombocytopenia, agranulocytosis).

Serious Safety Considerations

The regulatory profile highlights several serious adverse reactions. Beyond liver failure, these include Severe Cutaneous Adverse Reactions (SCARs), such as Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), which are classified as very rare. Rare anaphylactic shock (severe allergic reaction) is also listed under immune system disorders.

Population-Specific Constraints

Official labeling specifies that the medicine is contraindicated in individuals with severe hepatic impairment or a known hypersensitivity to the substance. Increased susceptibility to liver damage is also noted for patients with chronic alcohol use or those who are malnourished, emphasizing that safety is conditional on a patient’s underlying health status as detailed in government regulatory texts.

Overdose and Emergency Response

The official regulatory profile for a Setamol (Acetaminophen/Paracetamol) overdose centers on the risk of severe, delayed, and progressive organ damage. Documented initial manifestations may be mild, non-specific, or entirely absent, including symptoms such as nausea, vomiting, paleness, or stomach pain. However, this asymptomatic latency does not preclude the onset of severe toxicity. The most serious officially documented outcomes are Acute Liver Failure (Hepatotoxicity) and Hepatic Necrosis, which carry a risk of death or may necessitate a liver transplant.

Government health authorities strictly mandate that individuals seek immediate medical attention or contact emergency services for any suspected overdosage, regardless of whether clear symptoms are present. This urgent action is required because the specific antidote, N-acetylcysteine (NAC), is most effective when administered within the critical hours following ingestion. The official management protocols rely on immediate laboratory monitoring, including the Serum Acetaminophen Level and Liver Function Tests, often utilized with the Rumack-Matthew Nomogram to guide the timely administration of the antidote and subsequent supportive care. Failure to seek immediate help can result in irreversible, life-threatening complications.

Therapeutic Uses of Setamol

What Setamol Treats: Main Uses and Benefits

Setamol (Acetaminophen) is a non-opioid analgesic and antipyretic agent that plays a role in managing a range of common symptomatic manifestations, particularly those related to physical discomfort and systemic imbalance, focusing on pain and fever.

Symptomatic Relief and Application

The medication helps address symptom clusters that may become intense or disruptive, commonly used for manifestations such as everyday headaches, musculoskeletal aches, dental discomfort, and episodic pain including primary menstrual cramping. It is also relevant in contexts involving heightened systemic burden, used specifically to help moderate and reduce fever that accompanies various acute symptomatic illnesses.

Setamol is applied across conditions characterized by periods of heightened symptoms, which may include discomfort from the common cold or influenza, and is often used during phases when symptoms become more noticeable, such as following minor dental or surgical procedures. The medication provides support that helps ease the overall symptom burden, supporting general well-being during symptomatic phases.

“Applied across domains where additional symptomatic support is needed, this agent is relevant for easing distressing physical manifestations during difficult symptomatic episodes.”

Quick Fact

Quick Fact: Relief for Episodic Discomfort
Setamol is considered relevant for easing symptoms that may intensify temporarily, such as tension headaches or acute muscle stiffness, and assists with maintaining functional stability, which helps improve day-to-day comfort.

Eligibility and Restrictions for Use

Who Can and Cannot Use Setamol?

Setamol (Acetaminophen/Paracetamol) is an over-the-counter medicine, but its eligibility for use is strictly defined by government regulatory documents. These rules determine who must avoid the drug and who must use it conditionally.


Populations with Absolute Contraindications

Official labeling mandates that Setamol must not be used by certain populations due to high risk:

  • Severe Hepatic Impairment: The drug is absolutely contraindicated in patients with severe active liver disease or severe hepatic impairment.
  • Hypersensitivity: Individuals with a documented severe allergy or hypersensitivity reaction to acetaminophen or any formulation excipients.

Age and Condition-Based Restrictions

Population/Condition Eligibility Status (Regulatory Basis)
Children under specified minimum age Use is restricted; typically requires explicit guidance for those under two years of age.
Severe Renal Impairment Requires conditional use, often mandating longer dosing intervals and reduced total daily dose.
Pregnancy Use is allowed when clinically necessary, but is restricted to the lowest effective dose for the shortest duration (EMA SmPC).
Breastfeeding Use is generally acceptable at standard therapeutic doses.

The general adult population is eligible for use, provided they do not fall into the strictly contraindicated categories.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Interactions with Setamol (Acetaminophen) are officially documented in regulatory labels, focusing on pharmacokinetic alterations, enhanced toxicity risks, and pharmacodynamic effects.

Contraindicated Combination

The co-administration of Setamol with any other product containing Acetaminophen is strictly prohibited to prevent exceeding the maximum dose and mitigate the severe risk of hepatotoxicity (liver damage).

Pharmacokinetic Interactions

Interaction Type Interacting Substances Official Regulatory Outcome
Clearance Reduction Probenecid, Isoniazid Substantially reduces Acetaminophen clearance; may necessitate consideration of a dose reduction.
Toxicity Risk Increase Carbamazepine, Phenytoin, Rifampicin, St John's Wort These hepatic enzyme inducers increase the risk of Acetaminophen-induced hepatotoxicity, particularly in cases of overdose.
Absorption Rate Alteration Metoclopramide, Domperidone Increase the speed of Acetaminophen absorption.
Colestyramine Decreases the speed of absorption; requires separation of administration by at least one hour if a rapid effect is needed.

Pharmacodynamic and Population-Specific Interactions

Regular, prolonged daily use with Warfarin or other Coumarins enhances the anticoagulant effect, requiring increased monitoring of the International Normalized Ratio (INR) to manage the heightened risk of bleeding. Zidovudine co-administration is associated with an increased incidence of neutropenia. Furthermore, labels identify patients with chronic alcoholism or those using hepatic enzyme inducers as having a greater danger of severe liver damage.

Mechanism of Action

Setamol (Paracetamol/Acetaminophen) modulates signaling pathways primarily within the central nervous system (CNS). Its primary actions involve the inhibition of prostaglandin H₂ synthetase (PGHS), particularly the cyclooxygenase (COX) component, though this activity is highly dependent on local peroxide concentrations. Setamol functions as a reducing co-substrate at the peroxidase (POX) site of COX, which limits the necessary radical formation for subsequent enzyme activity. This action restricts the biosynthesis of prostaglandins (PGs) within the CNS.

Additionally, Setamol undergoes biotransformation to form the active metabolite AM404 in the CNS. AM404 is an agonist at the transient receptor potential cation channel subfamily V member 1 (TRPV1), and also interacts with the endocannabinoid system, influencing the CB1 receptor signaling cascade. The compound also impacts descending serotonergic pathways and the nitric oxide (NO) synthesis pathway, contributing to system-level modulation of neuronal signaling.

Dosage and Administration Information

Administration Scope and Protocols

Setamol (Acetaminophen/Paracetamol) is administered according to standardized use protocols. The medicine is authorized for administration through oral, rectal, and intravenous (IV) routes, corresponding to its availability as tablets, suppositories, and solutions for infusion. The usage protocol requires precise dosing and scheduling to ensure proper use.

The standardized adult single dose for immediate-release oral forms typically ranges from 325 mg to 1,000 mg, while the dosing frequency is generally every 4 to 6 hours as required. A fundamental principle of administration is the strict daily limit: the maximum adult dose, derived from all sources of the drug (prescription and over-the-counter), must not exceed 4,000 mg within a 24-hour period.

Administration constraints are specific to the dosage form. Oral forms may be taken with or without food. Extended-release tablets must be swallowed whole and cannot be crushed or cut. Intravenous administration requires specific procedural control; the dose must be administered over a controlled 15-minute infusion period. Special instructions are required for certain populations; for instance, the dosing interval is typically extended for patients with severe renal impairment to account for slower clearance.


Connection to the Overall Use Protocol

Established protocols define a rigid use framework characterized by specified administration routes, exact dose ranges, and mandated time intervals between administrations. This procedural structure is designed to standardize how the medicine is delivered and dictates the operational limits on single and total daily doses. The instructions detail the administration technique for each form, such as the required infusion duration for the intravenous product and the handling rules for oral extended-release forms.

Recent Clinical Evidence

Research evidence / Overview of studies

Overview of Clinical Research

This research overview details studies that have evaluated whether the symptoms of chronic, moderate osteoarthritis (OA) of the knee were addressed. These studies were focused on participants who had experienced no adequate response to non-pharmacological management or simple analgesics.

Research focused on delivering a concentrated formulation of X via a single intra-articular injection, with studies exploring whether it was associated with reduced pain and onset of effects. Clinical trials have examined the tolerability and effect of this treatment.


Main Findings: Pain and Function

The primary goals of the clinical trials were to assess changes in pain severity and physical function in the knee joint.

Primary studies examined outcomes related to pain severity and improved function, which included observations of a reduction that persisted for up to 6 months in participants. The median time to reported symptom changes was reported by investigators to be between 4 and 10 days post-injection.


Combination Therapy Studies

Other research evaluated whether the combination of X and a local anesthetic differed from the use of X alone.

  • One meta-analysis summarized data from 18 studies involving over 2,000 patients. The meta-analysis suggests findings related to the knee's cushioning effect and friction.
  • Studies have examined the results in participants who have not responded to simple analgesics. Findings suggested that combining X with a local anesthetic was linked to differences in time to reported changes in pain compared to X alone.

Safety and Tolerability

Trial participants reported tolerability outcomes. Furthermore, research reported high patient satisfaction and tolerability in the treatment's participants. The most common adverse events reported in the clinical trials were transient local injection-site reactions, such as pain, swelling, and redness.

Key Studies & References

  1. Therapeutic trajectory following intra-articular hyaluronic acid injection in knee osteoarthritis – meta-analysis
  2. Less Pain with Intra-Articular Hyaluronic Acid Injections for Knee Osteoarthritis Compared to Placebo: A Systematic Review and Meta-Analysis of Randomised Controlled Trials

Frequently Asked Questions (FAQ)

Common questions about Setamol (FAQ)


Q: Does Setamol cause drowsiness or affect my ability to drive?

A: Official safety documents do not commonly list drowsiness as an expected side effect of Setamol when taken alone for pain or fever. Because Setamol is an analgesic that is not classified as a sedative, general regulatory warnings do not typically include restrictions on driving or operating machinery in the official labeling.

Q: Is it possible to become dependent on Setamol if I use it regularly?

A: Setamol is classified as a non-opioid analgesic. It is not listed as a controlled substance by regulatory agencies and is not typically associated with the risk of physical dependence seen with opioid pain medicines.

Q: How long does Setamol stay in your system after taking it?

A: Information in professional regulatory labeling indicates that the time it takes for the amount of Setamol in the body to be reduced by half (the half-life) is typically about 2 to 3 hours in adults who have healthy liver function. The time required for the body to completely eliminate the substance is typically based on this half-life figure.

Q: Is there a generic version of Setamol available?

A: Yes, the active ingredient in Setamol is Acetaminophen, which is also known by its scientific name, Paracetamol. This ingredient is widely available as a generic medicine under its chemical name and is also sold under numerous brand names worldwide.

Q: What is the typical time frame Setamol is usually prescribed for?

A: For self-treatment of acute pain or fever using over-the-counter Setamol, official labeling sets usage limits of not more than 10 days for pain or 3 days for fever. These limits are in place to guide short-term use and emphasize the need for professional consultation if symptoms persist.

Q: Does Setamol show up on standard drug tests?

A: Setamol (Acetaminophen) is a common over-the-counter medicine and is not classified as a scheduled or controlled substance. Regulatory documents indicate standard screening focuses on controlled substances, not over-the-counter pain relievers.

Q: Can Setamol be used if I have a history of stomach ulcers?

A: Official Setamol labeling does not list a history of stomach ulcers as a specific contraindication or safety warning. The contraindications focus on conditions such as severe hepatic impairment and known hypersensitivity to the substance.

Q: Can I use Setamol if I am also taking prescription drugs for anxiety or depression?

A: Regulatory interaction checks do not show a major interaction risk between Setamol and common classes of prescription medicines used for anxiety or depression, such as selective serotonin reuptake inhibitors (SSRIs). Official guidance emphasizes the importance of a healthcare professional reviewing all concurrent medications to check for potential interaction risks.

Q: Why are there different strengths or formulations of Setamol available?

A: Different strengths and formulations (such as tablets, liquids, and intravenous solutions) are available to align with specific regulatory dosing requirements. These variations ensure the proper amount of the medicine can be administered to different patient groups, such as children versus adults, and for different administration routes.

Q: Can Setamol affect the results of certain medical lab tests?

A: Yes, official safety information indicates that Setamol is known to interfere with the readings of certain medical devices, such as continuous glucose monitors (CGMs). This interference may potentially cause falsely elevated glucose values.

Q: Can I take Setamol if I am allergic to aspirin or other pain medicines?

A: Official safety information notes that Setamol has been associated with a potential for cross-reactivity in a small number of individuals who have known sensitivity or allergy to aspirin or certain other non-steroidal anti-inflammatory drugs (NSAIDs).

Q: What is the role of Setamol in treating chronic vs. acute conditions?

A: Setamol’s regulatory approval is for the management of acute (short-term) mild-to-moderate pain and fever. Labeling includes specific warnings against prolonged use due to the risk of severe liver damage (hepatotoxicity), supporting its role for short-term symptomatic relief.

Q: Does Setamol affect blood sugar levels, which is a concern for people with diabetes?

A: Setamol does not affect the body's actual blood sugar levels. However, it is known to interfere with the technology of continuous glucose monitors (CGMs), which has been associated with falsely high readings in people who rely on those devices.

Q: How do the clinical trials for Setamol compare it to a placebo?

A: Official reviews of clinical trial data detail that Setamol has been studied against a placebo (an inactive substance) to evaluate its effect on pain management and fever reduction across various formulations and patient populations. Clinical trials often involve comparison to a placebo to describe the medicine's effect.

Q: What is the main difference between Setamol and Ibuprofen (or another common comparator drug)?

A: Setamol differs from anti-inflammatory drugs like Ibuprofen primarily because its mechanism of action is centralized and generally lacks significant anti-inflammatory effects throughout the body. The fundamental difference lies in their primary pharmacological classification and action profile.

Q: Can Setamol be taken with common daily supplements like vitamins or herbal products?

A: While many common daily vitamins and minerals are not reported to interact with Setamol, regulatory guidance notes that healthcare professionals typically review all concurrent supplements and herbal products to check for potential interaction risks.

Q: Are there any specific foods or drinks I should avoid while using Setamol?

A: The primary and most critical substance to avoid while using Setamol is alcohol, as the combination greatly increases the risk of severe liver damage (hepatotoxicity). Oral forms of the medicine are otherwise typically allowed to be taken with or without food.

Q: Is Setamol safe for use in older adults (seniors)?

A: Official labeling does not list older age as an absolute contraindication for Setamol use. However, official regulatory documentation emphasizes adherence to the maximum daily dose to minimize the risk of liver toxicity, which is a key safety constraint for all adults.

Q: Is Setamol approved for children, and if so, at what ages?

A: Setamol is authorized for use in pediatric patients for pain and fever, with specific dosing and usage protocols defined for various age groups. Official regulatory sections provide detailed guidance for children over two years of age, infants, and neonates.

Q: What does 'contraindication' mean in the context of Setamol's safety information?

A: In official documents, a contraindication is a situation or medical condition that makes using the medicine dangerous for a patient. For example, severe liver disease is a contraindication, meaning the drug is officially prohibited for use in people with that condition due to a high risk of harm.

Q: Are there different brand names for the same active ingredient as Setamol?

A: Yes, the active ingredient in Setamol is Acetaminophen, and it is legally available under numerous brand names and generic labels worldwide. This wide availability reflects the drug's long-standing regulatory approval for mild-to-moderate pain and fever relief.

Q: What are the signs of an allergic reaction to Setamol?

A: Official safety information lists signs of a serious allergic reaction, which can include rash, hives, difficulty breathing or swallowing, swelling of the face or throat, and red, peeling, or blistering skin. These symptoms are part of the warnings about hypersensitivity.

How should Setamol be stored and disposed of?

Setamol (Acetaminophen/Paracetamol) must be stored and disposed of according to regulatory requirements to ensure its stability and prevent accidental harm or environmental impact.

Storage Conditions

Requirement Official Stipulation
Temperature Range Store at controlled room temperature, typically 20 C to 25 C (68 F to 77 F).
Protection Keep the medicine protected from moisture and excessive heat; avoid storing in a humid place like a bathroom.
Child Safety It is mandatory to keep the product out of the sight and reach of children.
Container Keep the medication in its original container and ensure the lid is tightly closed.

Disposal Instructions

Unused or expired Setamol should ideally be disposed of via a drug take-back program or mail-back envelope. If a take-back option is unavailable, the medicine must be removed from its container, mixed with an unappealing substance (e.g., used coffee grounds or cat litter), sealed in a bag or container, and discarded with household trash. The medicine must not be flushed down the toilet or poured down a drain.

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

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