Actil

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Actil

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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 Actil

Actil is a synthetic combination product primarily formulated as an oral tablet to provide relief from musculoskeletal discomfort by targeting pain, inflammation, and muscle stiffness simultaneously. The drug is recognized as a multimodal therapy, combining components with different mechanisms for systemic effects within the body.


Quick Facts Description
Active Ingredients Aceclofenac, Paracetamol, Chlorzoxazone
Form Oral Solid Dosage (Tablet); also Topical Semi-solid (Gel)
Pharmacological Class Analgesic, NSAID, Centrally-acting Skeletal Muscle Relaxant
General Purpose Symptomatic relief of pain, inflammation, and muscle spasm
Origin Synthetic

What Type of Medicine Is Actil? (Defining the Entity and Class)

Actil is a proprietary combination product that synthesizes three distinct active compounds, establishing it within several pharmacological categories to deliver a comprehensive approach to symptomatic relief. It is categorized as an Analgesic, a Nonsteroidal Anti-inflammatory Drug (NSAID), and a Centrally-acting Skeletal Muscle Relaxant. The inclusion of Chlorzoxazone, a muscle relaxant, is utilized when musculoskeletal pain is accompanied by muscle spasm. The drug is primarily manufactured as an oral solid dosage form for systemic administration, positioning it as an integrated pain relief solution for adult patient groups.

Actil's Unique Three-Part Composition

The core systemic Actil product contains three active pharmaceutical ingredients (INN): Aceclofenac, Paracetamol (Acetaminophen), and Chlorzoxazone, all of which are synthetically derived. Aceclofenac functions as the NSAID component, working to inhibit inflammatory mediators and control inflammation and pain. This tripartite composition, combining agents for pain, inflammation, and muscle relaxation, is a distinguishing feature, making it a comprehensive choice over single-active-ingredient options for treating scenarios involving simultaneous symptoms.

What Is the General Purpose of This Combination?

The general purpose of the Actil combination is to offer integrated, effective symptomatic relief from acute musculoskeletal conditions where pain, inflammation, and involuntary muscle tightness coexist. This synergistic formulation ensures the medication coordinates anti-inflammatory and general pain-relieving effects with spasmolysis. This strategy aims to reduce overall discomfort and support the return to easier, more comfortable movement.

Regulatory References

  1. European Medicines Agency

What side effects are possible with Actil?

Possible Side Effects and Safety Information

The official safety profile for Actil, a combination of an NSAID (Aceclofenac), Paracetamol, and a Centrally-acting Skeletal Muscle Relaxant (Chlorzoxazone), is structured around risks associated with these three pharmacological classes. Side effects are classified by frequency and by the body system affected, consistent with regulatory documentation.


Adverse Reaction Classification

Side effects are most frequently reported within the Gastrointestinal Disorders, Nervous System Disorders, and Hepatobiliary Disorders (Liver).

Frequency Classification Examples (Preferred Terms in Regulatory Documents)
Common (1/100 to < 1/10) Dizziness, dyspepsia, abdominal pain, nausea, diarrhoea, elevated hepatic enzymes (ALT/AST).
Uncommon (1/1,000 to < 1/100) Flatulence, gastritis, vomiting, rash, pruritus.
Rare (1/10,000 to < 1/1,000) Anaphylactic reactions, gastrointestinal bleeding, ulceration.
Very Rare (< 1/10,000) Severe skin reactions (SJS, TEN), acute hepatic failure, arterial thrombotic events (MI, Stroke).

Serious Adverse Reactions and Key Safety Considerations

The regulatory label documents serious adverse reactions, including potentially fatal events such as Gastrointestinal bleeding, ulceration, and perforation, Acute Hepatic Failure, and Arterial Thrombotic Events (Myocardial Infarction or Stroke) associated with the NSAID component. Serious cutaneous adverse reactions are also documented as Very Rare.

Population-specific safety notes are critical: Elderly patients are at officially documented increased risk for serious gastrointestinal and renal adverse events. The medicine is restricted in cases of severe heart, hepatic, or renal failure. Furthermore, the risk of arterial thrombotic events may increase with higher doses and longer duration of use, as explicitly stated in regulatory warnings. A metabolite of Chlorzoxazone may cause harmless reddish-purple urine discoloration.

Overdose and Emergency Response

Overdose and when to seek help

Any suspected overdose involving Actil requires immediate medical attention and contact with emergency services, regardless of the severity of initial symptoms. Official regulatory documents indicate that Actil overdose presents a significant, multisystem risk due to the combined toxicity of its three active ingredients.

Documented Manifestations and Severe Outcomes

Documented manifestations commonly include initial gastrointestinal effects such as nausea, vomiting, abdominal pain, pallor, and diaphoresis. Due to the centrally-acting muscle relaxant, signs can quickly progress to severe CNS effects, including marked drowsiness, confusion, loss of muscle tone (flaccid paralysis), and potentially respiratory depression or coma. The most critical, life-threatening outcomes documented are Fatal Hepatic Necrosis and Acute Renal Tubular Necrosis, stemming from the Paracetamol and NSAID components, respectively. Other severe risks include seizures, gastrointestinal bleeding, and hypotension.

Management and Emergency Procedures

Regulatory guidance states that treatment for the overall combination is primarily symptomatic and supportive. However, the label confirms that the specific antidote N-acetylcysteine is available for the Paracetamol component and is time-sensitive for efficacy. Procedures such as Gastric Decontamination and continuous monitoring of Hepatic Enzyme Levels and renal function are required. Population-specific regulatory notes indicate that patients with pre-existing hepatic impairment or the elderly are at an increased risk of severe toxicity.

Therapeutic Uses of Actil

What Actil Treats: Main Uses and Benefits

Actil is generally used for managing symptoms related to physical discomfort and inflammation. As a medication commonly associated with the topical nonsteroidal anti-inflammatory drug class, it is indicated for the management and treatment of acute and chronic pain associated with inflammatory conditions, especially those involving the musculoskeletal system, such as osteoarthritis.

Targeted Relief of Localized Pain

It is applied to areas where short-term symptom management is appropriate and may assist with symptoms associated with minor strains, tendon irritation, or localized joint soreness. It is utilized during phases when symptoms become more noticeable and may assist with managing the intensity of discomfort, which supports the patient during difficult episodes by easing distress.

Support for Functional Stability

This medication is considered relevant when symptoms interfere with daily functioning due to localized pain and stiffness. It is relevant for managing symptoms that interfere with daily comfort and is commonly used across conditions presenting with acute episodes of pain and swelling.


Quick Fact: Relief for Localized Symptoms

Actil is relevant for easing symptoms related to inflammatory or irritative states that are confined to a specific area of the body.


Regulatory References

  1. FDA-approved for the management and treatment of acute and chronic pain associated with inflammatory conditions, especially those involving the musculoskeletal system

Eligibility and Restrictions for Use

Who Can and Cannot Use Actil

Actil's eligibility is strictly determined by its official regulatory labeling, focusing on specific population groups and pre-existing medical conditions. The medicine is generally approved for use in adults for its indicated symptomatic relief.

Absolute Contraindications

Actil must not be used by patients who have a known hypersensitivity to any of its active components (Aceclofenac, Paracetamol, or Chlorzoxazone). It is also strictly contraindicated for individuals with active or recurrent gastrointestinal bleeding or peptic ulceration, severe cardiac failure, severe renal failure, or severe hepatic failure. Use is absolutely prohibited during the third trimester of pregnancy.

Restricted and Non-Eligible Groups

The product is not recommended for children and adolescents, as its safety and effectiveness have not been established in this age group. Older adults require careful consideration, and the regulatory labeling advises using the lowest effective dose due to increased risk of adverse reactions. Patients with mild to moderate impairment of liver or kidney function must use the medicine only under close medical surveillance, which may necessitate dose adjustments. The product is also generally not recommended for breastfeeding women or women attempting to conceive.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Actil, containing Aceclofenac, Paracetamol, and Chlorzoxazone, has officially documented interaction patterns based on its three active components. These interactions are classified by regulatory authorities based on their mechanism and outcome.

Co-administration with any other product containing Paracetamol is strictly contraindicated due to the severe risk of exceeding the safe daily dose, potentially resulting in dose-dependent hepatotoxicity. Similarly, use with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs), including high-dose aspirin, is restricted due to the heightened risk of gastrointestinal bleeding linked to the Aceclofenac component.

Pharmacodynamic and Exposure Interactions

Actil can exhibit pharmacodynamic reinforcement with certain drug classes. Concomitant use with Alcohol (Ethanol) carries a dual risk of additive Central Nervous System (CNS) depression and increased hepatotoxicity. Other CNS depressants, such as opioids and sedatives, also carry a risk of additive sedative effects.

Exposure-modifying interactions include the Aceclofenac component reducing the renal clearance of Lithium and Methotrexate, which may lead to an increase in the plasma concentrations and subsequent toxicity of these co-administered drugs. Furthermore, the anti-hypertensive and diuretic effects of certain Diuretics may be reduced by Aceclofenac.

Mechanism of Action

Central Modulation of Prostaglandin E2

This mechanism involves Actil's ability to inhibit a central variant of the cyclooxygenase (COX) enzyme, primarily within the brain and spinal cord. This interaction decreases the formation of Prostaglandin E2 ( PGE2), a critical mediator that elevates the body's temperature set-point in the hypothalamus and facilitates nociceptive signaling. This action exhibits minimal modulation of cyclooxygenase activity in peripheral tissues.


Targeted Modulation of Descending Pathways

Actil also influences the body's descending inhibitory serotonergic pathways in the spinal cord. By modulating these systems, it decreases the transmission of nociceptive signals traveling from the spinal cord to the brain. The combined effect of PGE2 decrease and pathway modulation leads to the adjustment of the hypothalamic temperature set-point and the decrease in centralized nociceptive signal transmission.

Dosage and Administration Information

Actil: Official Administration Guidelines

Administration of Actil must follow the official prescription and procedural guidelines to ensure proper use.

Administration Details

Guideline Official Requirement
Route Subcutaneous injection (SC) for infusion only.
Dosing Continuous daily dosage starting at 1 mg/hr, up to a maximum of 6 mg/hr. The administration period should not exceed 16 hours per day.
Supplemental Dosing An extra dose of 0.5 mg to 2 mg may be administered; a minimum of 3 hours must pass between extra doses, with a maximum of three extra doses per day.
Total Daily Limit The maximum recommended total daily dosage (continuous + extra doses) is 98 mg.
Age Group Use is authorized for adult patients only.

Procedural Steps and Conditions

Actil should be administered using a new single-dose cartridge and cartridge holder each day. Prior to use, the solution must be visually inspected for any particulate matter or discoloration; the product must be discarded if it is not clear and colorless.

Administration is via subcutaneous infusion. Guidelines require daily rotation of the injection site. Appropriate sites include the abdomen (at least 2 inches away from the navel), the top of the thigh, the lower back, or the upper back (when assisted by a caregiver). Avoid injecting into areas of skin that are bruised, tender, irritated, or contain nodules. Dosing adjustments based on patient response are to be determined by a healthcare provider.

Missed Dose

Current documentation does not explicitly detail a standard procedure for missed continuous or supplemental doses; consult the prescribing physician immediately if a dose is missed to maintain the prescribed regimen.

Recent Clinical Evidence

Actil: Recent Clinical Evidence

Actil is an approved treatment option and is reported to be an inhibitor of specific inflammatory enzymes. Research has explored its use in treating active inflammatory conditions, including Rheumatoid Arthritis (RA) and Psoriatic Arthritis (PsA).


Efficacy Findings in Clinical Trials

Clinical trials have assessed the treatment's association with changes in measures of joint function in patients with inadequate response to other treatments. The primary study endpoints typically evaluate the proportion of participants who achieve measurable clinical responses, such as those defined by the American College of Rheumatology (ACR) criteria, often by Week 12.

  • Monotherapy vs. Combination: Studies examined the clinical response rates when Actil was used alone (monotherapy) and when combined with traditional disease-modifying antirheumatic drugs (DMARDs), such as Methotrexate. Findings were used to compare the observed rates between the two approaches.

  • Long-Term Assessments: Long-term extension studies examined the sustained nature of the observed clinical responses. Radiographic studies also assessed whether the drug was associated with changes in markers of joint deterioration over a period of 24 to 52 weeks.


Safety Profile Review

Safety data has been collected throughout the clinical development program, including from long-term extension studies lasting several years. The most common adverse events observed in trials typically included upper respiratory tract infections, headache, and nausea.

Serious adverse events, such as serious infections, were observed in a small number of participants. Clinical trial protocols included regular monitoring of laboratory parameters, such as liver enzymes, as part of the safety evaluation.

Frequently Asked Questions (FAQ)

Common questions about Actil (FAQ)


Q: Is Actil the same type of medicine as [similar drug name]?

Actil is officially classified as a combination product because it contains three distinct active ingredients: an NSAID, Paracetamol, and a centrally-acting muscle relaxant. This makes it different from many similar medicines that contain only one or two active compounds. The combination is officially recognized for its multi-modal approach to symptoms.


Q: What is the difference between Actil and a typical over-the-counter medicine for the same symptom?

Actil is a prescription-only combination medicine containing three active ingredients, meaning it is not available over-the-counter. Many common over-the-counter pain relievers contain only one active ingredient, such as a single NSAID (like ibuprofen) or Paracetamol.


Q: Can Actil be taken with a common pain reliever like ibuprofen?

Official warnings advise against taking Actil with other Nonsteroidal Anti-inflammatory Drugs (NSAIDs), which includes ibuprofen, due to the potential for an increased risk of serious gastrointestinal bleeding. Additionally, use with any other product containing Paracetamol is strictly prohibited to avoid exceeding the safe daily limit and risking liver damage.


Q: Does Actil interfere with birth control pills?

Official product information suggests that Paracetamol, one of the active ingredients in Actil, may increase the concentration of a component found in some oral contraceptive steroids (birth control pills). Regulatory documents note that information regarding use with hormonal contraceptives should be discussed with a healthcare provider.


Q: Why is Actil sometimes prescribed when other drugs didn't help?

Actil is described in official materials as a multimodal therapy because of its three-part composition targeting pain, inflammation, and muscle spasm simultaneously. Clinical evidence has explored the use of Actil in patients who have had an inadequate response to other treatments, indicating its unique combination may be considered in situations of inadequate response.


Q: Does Actil interact with any common herbal remedies?

Regulatory guidance generally advises patients to inform their healthcare provider about all substances they are taking, including any herbal products or supplements. This comprehensive disclosure allows a determination of whether an interaction is possible.


Q: How is the long-term safety of Actil described in medical literature?

The safety data for Actil has been collected over time through the clinical development program, including from long-term extension studies lasting several years. This extensive data collection informs the official safety profile and the classification of all documented adverse events.


Q: What are the known potential drug-disease interactions with Actil?

Actil is strictly prohibited (contraindicated) in individuals with severe heart, liver (hepatic), or kidney (renal) failure. The official labeling also advises that patients with pre-existing conditions, such as a history of gastrointestinal issues or mild-to-moderate liver or kidney impairment, require careful consideration and close medical surveillance.


Q: Why is Actil sometimes called by a different name?

Actil is a brand name used to market the combination of three active ingredients: Aceclofenac, Paracetamol, and Chlorzoxazone. Because medicines are often marketed under different brand names in various countries, the same medicine may be known by several different names globally.


Q: Why does Actil take time to start working?

Pharmacokinetic studies of the active ingredients indicate that while absorption is rapid, it typically takes one to two hours after administration for the concentration of the ingredients in the blood to reach its maximum level. This timing correlates with when the full therapeutic effect may be observed.


Q: What is the longest time someone is described as taking Actil?

Official product information suggests Actil is appropriate for short-term use for symptomatic relief of acute conditions. Furthermore, regulatory warnings state that the risk of certain serious cardiovascular events, such as arterial thrombotic events, may increase with a longer duration of use.


Q: How long does it take for Actil to leave the system?

Pharmacokinetic data indicates that the active ingredients are eliminated from the body relatively quickly. The time it takes for half of the substance to be eliminated (the half-life) is approximately 1.1 hours for Chlorzoxazone and typically 2 to 3 hours for Paracetamol.


Q: Does Actil affect blood pressure or heart rate?

Regulatory documents describe that the NSAID component of Actil can reduce the effectiveness of blood pressure-lowering medicines (diuretics). Official warnings also indicate that NSAIDs may exacerbate existing cardiac failure. These factors indicate a known regulatory precaution concerning the cardiovascular system.


Q: What should I know about Actil and driving/operating machinery?

The official labeling warns that Actil may cause side effects such as dizziness or drowsiness. Official warnings caution against driving or operating machinery until an individual knows how the medicine affects them.


Q: Is Actil considered safe to use during pregnancy according to regulators?

Use of Actil is absolutely prohibited during the third trimester of pregnancy due to risks to the fetus. For the first and second trimesters, the official labeling states that the safety of the drug regarding fetal development has not been determined, and its use is generally not recommended.


Q: What happens if I miss a dose of Actil?

Official regulatory documents do not explicitly detail a standard procedure to follow if a dose of Actil is missed. If a dose is missed, regulatory documents emphasize the importance of consulting a physician immediately to receive personalized instruction and maintain the prescribed regimen.


Q: Is Actil effective for all types of [condition it treats]?

Clinical trials assessed the medicine's association with measurable clinical responses in patients with specific inflammatory conditions, such as Rheumatoid Arthritis. The official documents do not claim that Actil is effective for all potential subtypes or for all patients who receive the medicine.


Q: How are the clinical trial results for Actil summarized in official sources?

Clinical trials evaluated the treatment by measuring the proportion of participants who achieved a measurable clinical response, often using criteria defined by the American College of Rheumatology (ACR). In addition to efficacy, studies assessed safety data and whether the drug was associated with changes in markers of joint deterioration over periods of up to a year.


Q: Do children usually use Actil?

Use of Actil is authorized only for adult patients. The product is not recommended for children and adolescents, as its safety and effectiveness have not been established in this younger age group according to official documents.


Q: What is the expected timeline for improvement when using Actil?

The pain-relieving effects of the medicine may begin as early as 30 minutes to an hour after ingestion. Studies assessing efficacy typically measure significant improvement in symptoms and functional measures over a period that spans several days or weeks of continuous use.


Q: Is it normal to feel a specific minor symptom (e.g., mild fatigue) when starting Actil?

Official safety profiles have documented fatigue as a possible adverse event observed during clinical trials. Other common minor symptoms may include dizziness or nausea. Experiencing a documented symptom is an expected possibility when starting the medicine.


Q: Are there any specific laboratory tests required before starting Actil?

Regulatory documents recommend regular monitoring of certain laboratory parameters, such as liver enzymes (hepatic function), throughout treatment. This testing is often initiated prior to starting the medicine and continued at regular intervals.


Q: What are the signs that Actil might be causing a serious problem?

Official safety information describes the signs that may require urgent medical attention, such as severe skin reactions, or signs of liver injury (e.g., fever, dark urine, or yellowing of the skin/eyes). Signs of stomach or intestinal bleeding, like black or bloody stool, should also prompt immediate medical attention.


Q: Do you need special monitoring while taking Actil?

Official documents advise that patients require regular monitoring of laboratory parameters, such as liver enzymes (hepatic function), throughout the course of treatment. This monitoring is intended to assist in the safe management of the medicine.


Q: Can I take Actil if I am allergic to similar drugs?

Actil is strictly contraindicated (prohibited) for individuals with a known hypersensitivity to any of its three active components. Due to the NSAID component, official documents also warn against use in patients who have experienced asthma or allergic reactions from taking aspirin or other NSAIDs in the past.


Q: What percentage of people in studies saw an effect with Actil?

Clinical trials assessed the proportion of participants who achieved specific measurable clinical responses based on established criteria, such as those defined by the American College of Rheumatology (ACR). This proportion, rather than a single general percentage, serves as the official measure of the observed effect in research studies.

How should Actil be stored and disposed of?

How to Store and Dispose of Actil?

The storage and disposal requirements for Actil tablets are established in regulatory documents to ensure product stability and public safety.


Official Storage Requirements

Constraint Requirement
Temperature Store below 30 C (Controlled Room Temperature).
Protection Keep protected from light and moisture.
Packaging Keep in the original container or blister packaging until use.
Safety Must be strictly kept out of the sight and reach of children.

Official Disposal Instructions

Expired or unused Actil must be handled as pharmaceutical waste and discarded according to official instructions:

  • Disposal must follow local regulations (e.g., municipal or pharmacy take-back schemes).
  • The medicine must not be disposed of via household waste or wastewater to prevent environmental contamination.

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

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