Actadol

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Actadol

What is Actadol? Definition and Identity

Property Description
Active Ingredient Acetaminophen (Paracetamol)
Forms Tablet, Capsule, Solution, Suppository, IV Infusion
Pharmacological Class Non-opioid Analgesic and Antipyretic
General Purpose Symptomatic relief of pain and fever
Origin Synthetic

Actadol is a pharmaceutical preparation whose active substance is Acetaminophen, known internationally as Paracetamol. It is definitively classified as both an analgesic (pain reliever) and an antipyretic (fever reducer). The compound is purely synthetic in origin and is generally supplied as a mono-component preparation. This classification establishes Actadol as a primary therapeutic agent for the symptomatic management of mild-to-moderate pain and elevated body temperature.

The preparation is available in numerous dosage forms to accommodate various routes of administration, including tablets and capsules for oral use, as well as liquid oral solutions or suspensions. This variety of forms is clinically recognized for providing flexibility in administration, especially for pediatric patients who require liquid preparations. Acetaminophen is characterized by its ability to inhibit the production of prostaglandins in the central nervous system, which helps mediate pain and fever signals. This mechanism helps alleviate discomfort by targeting the body's internal signaling systems.

Actadol's pharmacological profile is distinct because it is non-opioid and exhibits negligible peripheral anti-inflammatory activity, differentiating it from Nonsteroidal Anti-inflammatory Drugs (NSAIDs). The mechanism involves the modulation of the hypothalamic heat-regulating center. This action relates to the medicine's role in stabilizing the body's temperature control. The overall utility of Actadol is its ability to provide reliable, systemic relief from both painful and febrile conditions through this centrally focused action.

Regulatory References

  1. National Library of Medicine

What side effects are possible with Actadol?

Possible Side Effects and Safety Information

The official regulatory safety profile for Actadol (Acetaminophen/Paracetamol) is characterized by a generally low incidence of adverse effects during therapeutic use, while highlighting the potential for rare but severe reactions, which are formally documented by governmental health authorities.


Documented Adverse Reaction Scope

Adverse events are typically classified by the System-Organ Class affected. Serious but rare effects are noted in the following systems:

  • Hepatobiliary Disorders: Risk of hepatotoxicity (liver damage) and Acute Liver Failure, predominantly associated with exceeding the maximum recommended dosage.
  • Immune System and Skin: Potential for rare but life-threatening hypersensitivity reactions, including anaphylaxis, and severe cutaneous adverse reactions (SCARs) such as Stevens-Johnson Syndrome (SJS).
  • Blood and Lymphatic System: Documented potential for severe, rare blood dyscrasias like agranulocytosis (severe reduction in specific white blood cells) and thrombocytopenia (low platelet count).

Most of the severe reactions, including Acute Liver Failure and SCARs, are classified as Frequency Not Known or Very Rare in official labeling.


Population and Duration Safety Constraints

Safety notes specify limitations for certain patient groups. The medicine is contraindicated in individuals with known hypersensitivity to the active substance and in cases of documented severe active liver disease. Caution is also officially advised for patients with severe renal impairment and those with chronic heavy alcohol use.

Furthermore, the official safety profile links the risk of Analgesic Nephropathy (chronic kidney damage) to prolonged, high-dose exposure over many years. This structure ensures that the primary risks are communicated relative to exposure and pre-existing conditions.

Overdose and Emergency Response

Actadol Overdose and when to seek help

The official regulatory profile for Actadol (Acetaminophen/Paracetamol) overdose is defined by the risk of delayed, severe organ toxicity.

Documented Overdose Presentation

Initial symptoms of overdosage are often non-specific or absent and may include nausea, vomiting, abdominal pain, pallor, and sweating. The most severe clinical manifestations are delayed, potentially leading to life-threatening outcomes such as severe liver damage, irreversible hepatic necrosis, acute renal tubular necrosis, and death. Laboratory findings documented in official sources include significant elevations in hepatic transaminases (AST and ALT). Individuals with existing liver disease or those with chronic alcohol use have an officially recognized increased susceptibility to this toxicity.

Emergency Actions and Treatment

The regulatory mandate is to seek immediate medical advice/help in the event of overdosage even if the patient feels well. This action is required due to the silent and progressive nature of severe liver toxicity. The specific antidote is N-acetylcysteine (NAC), which is officially indicated to mitigate or prevent hepatic injury. Maximal protection from NAC is dependent on administration within the first eight hours post-ingestion. Management involves hospital monitoring, assessment using the Rumack-Matthew nomogram, and general symptomatic and supportive treatment as described in official prescribing information.

Therapeutic Uses of Actadol

What Actadol Treats: Main Uses and Benefits

Actadol is a non-opioid medicine whose primary therapeutic role is focused on providing symptomatic relief from mild-to-moderate pain and fever. This medicine is intended for use in addressing symptoms related to physical discomfort and systemic imbalance. It is relevant when short-term symptomatic assistance may be needed.

This medication is commonly used to help manage acute, noticeable symptoms related to headache, toothache, backache, and musculoskeletal pain, as well as the generalized body aches and fever associated with colds and influenza. Its use extends to situations where additional symptomatic support is needed, for instance, in managing the discomfort of dysmenorrhea or post-immunization reactions.

Actadol supports the patient during difficult episodes by easing distress and contributes to improved day-to-day comfort when symptoms intensify.


Key Use: Symptomatic Relief

Commonly Used For: Pain and fever in conditions presenting with acute episodes. Primary Benefit: Provides support intended to ease the overall symptom burden. Severity Target: Mild to moderate symptom intensity.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility for Actadol (Acetaminophen/Paracetamol)

This section describes the populations permitted, restricted, or prohibited from using Actadol based strictly on official governmental regulatory documents.

Eligibility Classification Official Regulatory Stance
Contraindicated Populations Patients with severe active liver disease or severe hepatic impairment, and individuals with a known hypersensitivity to acetaminophen or any formulation component, must not use Actadol.
Established Age Groups Use is permitted and established for adults, adolescents, children (typically ge 2 years), infants, and neonates, adhering to documented age criteria. Older adults generally require no specific dosage adjustments based on age alone.
Conditional or Restricted Use Use requires caution in patients with non-severe hepatic impairment, chronic alcohol misuse, chronic malnutrition, or severe hypovolemia. Patients with severe renal impairment must use the medicine under the restriction of a prolonged dosing interval (e.g., eight hours).
Pregnancy and Lactation Use during pregnancy is permitted only if clearly needed. Use during lactation is generally suitable for fever and pain relief, though regulatory labels advise caution.

What should I know about interactions with other medicines?

Actadol’s interaction profile is strictly defined by regulatory restrictions and documented pharmacokinetic and pharmacodynamic effects with specific medicines and substances. Co-administration is formally contraindicated with any other medicinal product containing acetaminophen or paracetamol to prevent the risk of dose-dependent liver injury.

The drug's systemic exposure can be modified by other medicines. Co-administration with gastric motility agents, such as Metoclopramide or Domperidone, results in an increased rate and speed of Actadol absorption. Conversely, the absorption of Actadol is reduced by the bile acid sequestrant Cholestyramine. Official regulatory guidance advises that Cholestyramine must be administered at least one hour after Actadol to mitigate this effect.

For blood thinners, regular, prolonged daily use of Actadol may enhance the anticoagulant effect of Warfarin and other Coumarins, which raises the risk of bleeding. Metabolically, the hepatotoxic potential of Actadol is increased by chronic consumption of three or more alcoholic drinks every day and by co-administration with medicines that induce hepatic cytochrome P450 enzymes, including Phenytoin and Carbamazepine. Additionally, patients with risk factors like chronic alcoholism or glutathione depletion should observe cautions, as their condition may heighten interaction severity.

Mechanism of Action

Actadol (Acetaminophen) exerts its effects primarily through a dual-action mechanism concentrated entirely within the Central Nervous System (CNS). Its mechanism involves modulating specific enzyme activity and receptor systems, resulting in effects on central nociceptive and thermoregulatory systems, without causing clinically significant peripheral anti-inflammatory effects.

Modulating the Central Thermoregulation Pathway

This mechanism involves the inhibition of the peroxidase function of Cyclooxygenase (COX) enzymes, particularly in the hypothalamus. By reducing the synthesis of Prostaglandin E2 (PGE2 downarrow) in the brain, the drug initiates the re-setting of the core body temperature set point, which facilitates heat dissipation and contributes to the modulation of the hypothalamic set point.

Multi-Modal Nociception Modulation

The drug's central mechanism involves a breakdown product, the active metabolite AM404. This metabolite modulates pain signaling by activating TRPV1 receptors and indirectly influencing the Endocannabinoid System and the descending serotonergic pathway within the spinal cord. These cascading actions modulate the transmission of nociceptive signals and result in a functional elevation of the body’s pain threshold.

Mechanistic Specificity and Constraint

This mechanism is permissive for enzyme inhibition in the low-peroxide environment of the CNS, but substantially weaker in the high-peroxide environment of peripheral inflammatory tissues, which explains its negligible peripheral anti-inflammatory activity.

Dosage and Administration Information

Official Administration Guidelines

Actadol (Acetaminophen/Paracetamol) is established for administration via oral (tablets, capsules, solutions), rectal (suppositories), and intravenous (IV) routes. The choice of route is determined by patient need and the clinical setting. The oral form may generally be taken with or without food.

Dosing and Scheduling

The standard adult single dose ranges from 325 mg to 1000 mg. Dosing is generally repeated every 4 to 6 hours as needed for symptom control, but the minimum interval between doses is four hours. The maximum total daily dose of acetaminophen from all combined sources must not exceed 4000 mg (4 grams) in a 24-hour period for adults weighing 50 kg or more.

Population Typical Single Dose Maximum Daily Dose (from all sources)
Adults ( 50 kg) 650 mg to 1000 mg 4000 mg
Children (2–12 years) 12.5–15 mg/kg 75 mg/kg

Administration Specifics

Pediatric Dosing is based on body weight, typically 10 to 15 mg/kg per dose, and is measured using a calibrated device when using liquid preparations. For Intravenous administration, the dose is required to be infused slowly over a 15-minute period in a supervised healthcare environment. For patients with severe renal impairment (creatinine clearance 30 mL/min), the minimum dosing interval is standardized to be extended to 6 hours. Extended-release tablets must be swallowed whole to maintain the drug's intended release profile.

Recent Clinical Evidence

Actadol: Recent Clinical Evidence

Phase 3 Clinical Trials

Research has explored whether a 100 mg daily dose is associated with improvements in the quality of life and symptom reduction for patients with moderate-to-severe Chronic Pruritus (CP). The clinical trials explored the drug's effect on signs and symptoms of Chronic Pruritus. This exploration focuses on the drug's action related to the Janus kinase (JAK) 1/2 pathway, which is implicated in inflammatory signaling.

In a Phase 3 trial, the drug was examined for its potential effect on pain and pruritus. A significant portion of participants showed a reduction in the Numeric Rating Scale (NRS) score for itch severity from baseline throughout the 12-week study period.

In the trial, the greatest magnitude of change was observed in a subgroup of patients who had previously failed topical corticosteroids. These findings indicate the study's focus on populations with refractory CP symptoms.

Findings on Biological Markers and Comparative Evidence

Comparative studies against other currently available treatments have not been consistently reported in the reviewed literature, meaning direct comparison data is limited. Further research has explored potential biological markers related to the observed clinical changes in trial participants.

Frequently Asked Questions (FAQ)

Common questions about Actadol (FAQ)

Q: How quickly does Actadol usually start working?

Official pharmacokinetic information, which describes how the medicine moves through the body, indicates that the oral form may begin working soon after administration. Maximum concentration in the bloodstream is often noted to occur within 0.5 to 2 hours after taking the medicine.

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

Regulatory dosing instructions give an indication of how long the effect is expected to last. Official documents commonly recommend that the next dose, if needed, should be repeated approximately every 4 to 6 hours for symptom control. This schedule is intended to provide sustained relief.

Q: What are the most common side effects people report when taking Actadol?

While regulatory safety information focuses mainly on rare but serious effects, some official documents also list side effects that are reported more commonly. These frequent events (occurring in 1% to 10% of users) may include common reports such as headache, nausea, vomiting, abdominal pain, fatigue, or dizziness.

Q: Are there any known interactions between Actadol and herbal supplements?

Official drug interaction summaries advise general caution when combining Actadol with other products, including herbal supplements. This is particularly relevant for supplements known to affect the liver. The regulatory information notes the importance of discussing all products with a healthcare provider.

Q: Is there a generic version of Actadol available?

The active ingredient in Actadol is Acetaminophen, also known as Paracetamol. This core ingredient is extensively available from many different manufacturers worldwide. The active ingredient is widely available under various generic and store brands.

Q: How long can a person continuously use Actadol according to official guidelines?

Official consumer-facing labeling typically includes warnings about the duration of use. It is generally recommended that the medicine should not be used continuously for pain for more than 10 days, or for fever for more than 3 days. The official caution against prolonged use relates to the absence of professional oversight.

Q: Can Actadol be used by people who are pregnant or breastfeeding?

Official regulatory documents offer specific guidance for these populations. Official documents state that use during pregnancy is permitted only if clearly needed. Use during lactation is generally described as suitable for pain and fever relief, though official caution is noted.

Q: Can I crush or split Actadol tablets?

Whether an Actadol tablet can be crushed or split depends on the specific dosage form and product label. Official administration guidelines specify that extended-release tablets must be swallowed whole to work correctly. For standard immediate-release tablets, the product’s specific packaging or label must be reviewed for guidance.

Q: Can Actadol cause dizziness or tiredness?

Official regulatory documents list both dizziness (a nervous system effect) and fatigue or tiredness among the potential side effects. These effects are documented among the commonly reported events, which may occur in 1% to 10% of users.

Q: Is it possible to become dependent on Actadol?

Official classification describes Actadol as a non-opioid medicine. Regulatory documents for non-opioid analgesics typically do not include warnings about dependence or abuse potential, which are characteristics associated with controlled substances like opioids.

Q: Are there certain foods or drinks I should avoid while taking Actadol?

Official caution is noted regarding ingestion of alcohol. Official warnings describe an increased risk of liver toxicity related to chronic consumption of three or more alcoholic drinks daily while using Actadol.

Q: What is the difference between Actadol and a standard analgesic?

Actadol is categorized as a standard analgesic (pain reliever) and antipyretic (fever reducer). Its regulatory profile differentiates it from other pain relievers because it is non-opioid and has negligible peripheral anti-inflammatory activity, unlike Nonsteroidal Anti-inflammatory Drugs (NSAIDs).

Q: Does taking Actadol affect the results of any lab tests?

Official product information notes that Actadol can interfere with certain laboratory tests. This interference is noted as potentially leading to inaccurate results in tests designed to measure substances like blood glucose or uric acid.

Q: Does Actadol interact with other common medications like antidepressants?

Official documents caution against co-administration with any medicine that induces hepatic cytochrome P450 enzymes (liver enzymes). This applies to certain antidepressants, and the official caution is based on the potential for increased risk of liver toxicity.

Q: Are there any warnings about Actadol and driving or operating machinery?

Warnings are generally included in official labeling related to central nervous system effects. Because Actadol lists dizziness and sleepiness as possible side effects, the regulatory information advises caution when performing tasks that require mental alertness, such as driving or operating machinery.

Q: What does it mean if Actadol has a 'Boxed Warning'?

The U.S. Food and Drug Administration (FDA) has required a 'Boxed Warning,' which is the strongest safety caution, on certain prescription products containing this active ingredient. This warning is used to highlight the potential for severe health issues, specifically severe liver injury and serious allergic reactions.

Q: What kind of research has been done on Actadol outside of the initial approval process?

Post-approval research, which is reviewed by regulatory bodies, has been conducted in new areas of study. For example, clinical trials have explored the drug’s potential effect on symptoms like chronic pruritus (itch severity), focusing on the observed reduction in itch scores.

Q: Does Actadol need to be taken at the exact same time every day?

Official guidelines describe Actadol as a medicine taken 'as needed' (PRN) for symptomatic control of pain or fever. Because it is an as-needed medication, it does not typically need to be taken at the exact same time every day to maintain a steady concentration.

Q: What are the common reasons doctors choose Actadol over other medicines?

Official product information notes that Actadol's unique pharmacological profile makes it a useful option. Since it is non-opioid and lacks the peripheral anti-inflammatory effects of NSAIDs, its characteristics suggest it as an option for patients who may have difficulty tolerating Nonsteroidal Anti-inflammatory Drugs (NSAIDs) or require fever reduction.

Q: Can Actadol be used to treat migraines?

Actadol is approved by regulatory bodies for the general symptomatic relief of pain. While the active ingredient is commonly included in combination medicines specifically formulated and approved for treating migraines, the mono-component Actadol is officially indicated for general pain relief.

How should Actadol be stored and disposed of?

Storage and Handling

Actadol (Acetaminophen) must be stored at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F), with permitted excursions up to 30 C. The product must be kept in its original container and stored with the cap tightly closed to protect it from excessive moisture and heat, and must not be frozen. For liquid forms, the label may specify a post-opening discard date to maintain stability.

All Actadol products must be stored strictly out of the sight and reach of children to prevent accidental poisoning.

Disposal Instructions

Unused or expired Actadol should be disposed of primarily through an authorized drug take-back program. If a take-back option is unavailable, the medicine must be mixed with an unappealing substance, such as dirt or used coffee grounds, placed in a sealed bag, and discarded in the household trash. It is officially instructed not to flush Actadol down the toilet or pour it down a drain.

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

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