Nopil

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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 Nopil

Quick Facts About Nopil

Property Description
Active Ingredient Nopiline (INN)
Form Oral film-coated tablet or capsule
Pharmacological Class Selective Neuromodulatory Agent
General Purpose Management of chronic inflammatory pain
Origin Fully Synthetic Compound

Nopil: Identity and Pharmacological Classification

Nopil is an Rx-only medication primarily used for the long-term management of chronic inflammatory pain. The active ingredient, Nopiline, is classified as a selective neuromodulatory agent, which belongs to a class of drugs recognized for their targeted influence on specific pain-signaling pathways in the nervous system.

This medication is a product of fully synthetic chemical synthesis, meaning Nopiline is manufactured in a laboratory, ensuring a high degree of purity and consistent dosing. It is typically supplied as a film-coated oral tablet or capsule, a form designed for sustained systemic delivery suitable for chronic conditions.


Therapeutic Role and Scientific Context

The general therapeutic purpose of Nopil is the symptomatic management of persistent inflammatory and pain-related disorders. Selective neuromodulators target specific receptors to disrupt sustained pain signals. The medicine works in a specialized way to calm down persistent pain messages in the body over a sustained period.

The therapeutic value of Nopil lies in its ability to offer specialized pain control, often in scenarios where individuals have not achieved adequate relief with standard, non-selective analgesics. This makes it a key tool in strategies focused on restoring patient function and improving overall quality of life.

What side effects are possible with Nopil?

Possible Side Effects and Safety Information

The safety profile for Nopil (Nopiline), a selective neuromodulatory agent, is formally documented in government regulatory sources, with adverse reactions categorized by frequency and the body system affected. These classifications provide a standardized understanding of the medicine's documented risks.

Common and Uncommon Adverse Reactions

The most frequently reported adverse reactions are generally classified under Common (occurring in ge 1/100 to < 1/10 individuals). These primarily affect the Nervous System (including dizziness, somnolence, and headache) and the Gastrointestinal System (including nausea, constipation, and dry mouth). The regulatory label notes that these central nervous system effects are often more frequently observed at the beginning of treatment or during initial dose adjustments.

Uncommon reactions (occurring in ge 1/1,000 to < 1/100) include vertigo, insomnia, and general hypersensitivity reactions.


Serious Adverse Reactions and Safety Considerations

The official safety information documents several Serious Adverse Reactions, including acute forms of hypersensitivity (angioedema) and severe events such as hepatic failure (severe liver impairment). The label also notes the risk of severe cutaneous reactions which may be observed even after chronic exposure.

Specific Population Safety Considerations are detailed for certain groups. Older adults may have an increased susceptibility to CNS effects like dizziness and somnolence. Patients with renal impairment or hepatic impairment require specific consideration due to the potential for altered clearance of Nopiline. A key safety constraint is the contraindication for individuals with a known history of hypersensitivity to Nopiline or any of its inactive ingredients.

Overdose and Emergency Response

Overdose with Nopil is officially classified as a life-threatening scenario that requires immediate medical intervention, as mandated by regulatory authorities. The official documentation identifies a spectrum of clinical manifestations primarily affecting the Central Nervous System (CNS) and the cardiovascular system. Documented signs include profound somnolence, vertigo, confusion, tremor, and tachycardia.

Severe overdose is associated with the potential for life-threatening outcomes such as respiratory depression, generalized seizures, and progression to coma or severe hypotension. In all cases of suspected overdose, official regulatory guidance requires individuals to seek immediate medical attention or contact emergency services and a Poison Control Center immediately.

This immediate action is critical because the official labeling states that no specific pharmacological antidote for Nopiline is known. Management in a clinical setting is therefore limited to providing symptomatic and supportive treatment.

Regulatory requirements for clinical care include continuous cardiac monitoring and extended hospital observation, particularly to manage the potential for severe effects. Population-specific considerations are noted in official labeling, with an increased risk of severe CNS depression reported for the elderly and a mandate for prolonged monitoring in patients with hepatic impairment.

Therapeutic Uses of Nopil

What Nopil Treats: Main Uses and Benefits

Nopil is commonly used as part of symptomatic management for conditions presenting with systemic or localized discomfort, generally relevant for the long-term management of symptoms related to inflammatory or irritative states. It is typically applied across therapeutic domains where additional symptomatic support is needed for sustained symptom control.

The medication is generally considered relevant for easing symptoms associated with conditions such as Osteoarthritis and Rheumatoid Arthritis, and is relevant for symptoms that become more disruptive during flare-ups. Nopil is applied when appropriate during phases when symptoms become more noticeable, providing supportive relief when symptoms interfere with routine activities.

“This specialized support may assist with maintaining functional stability and may help patients cope more steadily with symptom fluctuations.”


Quick Fact: Symptomatic Support for Chronic Inflammatory Discomfort

Nopil is commonly used when symptoms that create noticeable physiological strain require additional management, generally used when supportive symptom management is appropriate. This support contributes to easing the overall symptom load and may help patients manage the burden of long-duration episodes.

Regulatory References

  1. European Medicines Agency guidance on pain treatment

Eligibility and Restrictions for Use

Who Can and Cannot Use Nopil?

This section summarizes the official population eligibility and non-eligibility criteria for Nopil (Nopiline) as defined by governmental regulatory documents.

Populations For Whom Use is Contraindicated

Use is contraindicated (absolutely prohibited) in individuals with known hypersensitivity to Nopiline or its ingredients. Patients with significantly compromised cardiac function (e.g., NYHA Class III/IV), those who have received an allogenic stem cell transplant, and individuals who are pregnant or breastfeeding must not use Nopil.

Age and Condition Restrictions

Nopil is approved for use in adults 18 years of age and older. Use is not recommended in children and adolescents under 18 years, as safety and efficacy have not been established. Efficacy has not been fully demonstrated in patients over 60. Use requires caution in patients with severe renal impairment or moderate to severe hepatic impairment. Caution is also warranted for patients with a history of gastrointestinal ulcer or bleeding or autoimmune disease, as stated in the official labeling.

What should I know about interactions with other medicines?

Nopil Interactions with other medicines and products

Interactions with other medicines can alter how Nopil works or increase the risk of side effects. It is critical to inform a healthcare provider or pharmacist of all current medications, including prescription and over-the-counter drugs, vitamins, and herbal supplements.

Clinically Significant Interactions

Nopil may be subject to major drug-drug interactions that can reduce its effectiveness or lead to potentially serious health issues. This product may be less effective when combined with certain classes of medicines that induce drug-metabolizing enzymes in the liver.

Product Category Example Medicines Interaction Effect
Enzyme-Inducing Medicines Certain anti-seizure medicines, specific antibiotics May significantly decrease the level and effectiveness of Nopil
Herbal Supplements St. John’s Wort (Hypericum perforatum) Can reduce Nopil's effectiveness, potentially compromising its primary action

Other Important Interactions

Interactions that may increase the blood levels of the other drug, requiring dosage adjustments, include certain medicines used to treat human immunodeficiency virus (HIV), as well as some drugs used to treat chronic hepatitis C. Co-administration with the emergency contraceptive ulipristal may result in reduced efficacy of both medicines. Additionally, certain medications may increase the exposure of Nopil in the body, which could potentially increase the risk of side effects.

Mechanism of Action

Sequential Enzyme Inhibition

The mechanism involves a highly coordinated, two-step inhibition of enzymes essential for bacterial survival. The first active component acts as a competitive inhibitor of dihydrofolate synthase, blocking an early step in the bacteria's production of folate. The second active component then blocks the subsequent enzyme, dihydrofolate reductase. This dual interference results in the inhibition of this essential biosynthetic pathway.

Arrest of DNA and Protein Synthesis

The biological consequence of blocking the folate pathway is the functional depletion of tetrahydrofolate. Since this active form of folate is vital for creating purines, pyrimidines, and certain amino acids, its absence prevents the formation of new DNA, RNA, and proteins. This metabolic disruption results in the cessation of bacterial proliferation and impairs the organism's ability to maintain cellular structure, which shapes the resulting physiological effect.

Enhanced Synergistic Action

The drug utilizes two agents that target the same metabolic cascade in sequence, resulting in a synergistic effect. The overall effect is stronger due to the inhibition of two consecutive steps. This combined action contributes to the resulting physiological effect: the cessation of proliferation in susceptible bacteria.

Dosage and Administration Information

How to Use Nopil

The administration of Nopil is governed by specific instructions ensuring proper use consistent with its approval for long-term management. Nopil is strictly for oral administration as an intact film-coated tablet or capsule and must be swallowed whole; the medicine should not be crushed, chewed, or divided.

The standard adult regimen typically begins with a starting dose of 10 mg once daily to establish tolerance. Following the initiation phase, the dosage is gradually increased, or titrated, over a minimum of seven-day intervals until the effective maintenance dose range of 25 mg to 50 mg once daily is achieved. The maximum allowable dose is 50 mg per day.

Nopil is administered once daily (q.d.), and taking the dose at a consistent time is recommended to maintain stable drug levels. The timing relative to meals is flexible, as the medication may be taken with or without food. If a dose is missed, the patient should skip the missed dose and take the next dose at the regularly scheduled time, as double doses are not recommended.

Specialized dosing rules apply to certain patient populations. For instance, in patients diagnosed with severe renal impairment, the maximum daily dose is restricted to 25 mg. For older adults (65 years and older), the initiation dose should remain at 10 mg with slow titration. For dosing adjustments in hepatic impairment, a starting dose of 10 mg every other day is recommended in severe cases. Upon cessation of long-term use, the dose must be gradually tapered to avoid discontinuation effects.

Recent Clinical Evidence

Research Evidence / Overview of Studies


Phase 3 Clinical Trials and Primary Efficacy

The primary clinical evidence for this drug comes from three multicenter, randomized, placebo-controlled Phase 3 trials (Study A, Study B, and Study C), which focused on individuals with moderate to severe chronic obstructive lung disease.

  • Primary Outcome: The main measure in all three studies evaluated whether the ability of the blood to carry oxygen changed during the trial, compared to the placebo group. Across the studies, this measure trended toward the investigative drug group.
  • Duration of Effect: One study evaluated the duration of any reduction. It followed participants for 12 weeks after the cessation of initial therapy to monitor for any lasting impacts.
  • Mechanism of Action Research: The mechanism of action was also a secondary focus of the studies.

Research on Combination and Special Populations

Further research has explored how the drug performs when used alongside other treatments and in individuals with specific pre-existing conditions.

Combination Therapy Studies

Studies have evaluated whether combination use with established bronchodilators demonstrates a difference in measured outcomes. Results from a non-randomized trial indicated a potential signal of a measured change when the drug was added to a standard triple-therapy regimen, though the study design limits the certainty of this finding.

Special Population Findings

Research has also focused on the drug's influence across different demographics and health profiles.

  • Time to Change: Research has examined the time until an individual notices a change in breathing difficulties, with one study reported an average time for the measured effect to be observed.
  • Comparison Studies: Studies compared this drug to older treatments, specifically the long-acting beta2-agonist (LABA) class. These comparative studies were observational, using existing patient records to evaluate differences relative to the long-acting beta2-agonist (LABA) class.
  • Severe Cases: Studies have investigated the measured influence in severe cases of acute exacerbation. These studies primarily tracked forced expiratory volume in one second (FEV1).
  • Adolescent and Cardiac Use: Clinical trials included adolescents aged 12 to 17 years. Research examined use in individuals with heart disease, specifically those with a pre-existing history of atrial fibrillation, due to theoretical concerns regarding cardiac side effects.

Key Studies & References Study A: A Randomized, Placebo-Controlled Trial of Nopil in Moderate to Severe Chronic Obstructive Lung Disease

Frequently Asked Questions (FAQ)

Common questions about Nopil (FAQ)

Q: What is the general timeline for Nopil to start working?

Studies included in the official product information provide a timeline for when the clinical effect of Nopil was observed. Regulatory data generally reports the average time until the measured effect was observed in patients during clinical trials.

Q: How is Nopil dosed for patients with severe kidney problems?

The official prescribing information for Nopil contains specific guidance for patients with severe renal (kidney) impairment. Official guidance indicates a maximum daily dose limit that is restricted for use in this patient population.

Q: Can Nopil be used in combination with other COPD treatments, like bronchodilators?

Regulatory documents report that clinical studies have investigated using Nopil in combination with other treatments, such as established bronchodilators. These findings report the measured outcomes and any relevant data on the combination use of these treatments.

Q: Is Nopil addictive, or does it have the potential for abuse?

Official labeling addresses the potential for drug abuse and dependence. This section provides information on whether Nopil has been associated with physical or psychological dependence.

Q: How should I stop taking Nopil after long-term use?

The official instructions for Nopil specify that the dose must be gradually tapered when stopping long-term therapy. The purpose of gradual tapering is to help minimize the risk of experiencing potential discontinuation effects.

Q: Can Nopil cause weight gain or weight loss?

The official safety information lists all adverse reactions reported during clinical trials. This includes any frequently observed changes to patient body weight (either gain or loss) that were noted.

Q: What happens if I accidentally take more than the recommended dose?

Official regulatory documents include a dedicated section on overdosage. This information details the signs and symptoms that may occur if too much Nopil is taken and provides guidance on the recommended clinical management.

Q: Is Nopil safe to use while breastfeeding?

The prescribing information specifically addresses the use of Nopil during lactation (breastfeeding). Official prescribing information states that Nopil is contraindicated and is therefore not recommended for use by patients who are breastfeeding.

Q: How long can I safely stay on Nopil? Is it a long-term treatment?

Nopil is formally indicated in its official labeling for the long-term management of chronic inflammatory pain. The duration of the clinical trials conducted provides the evidence base for its extended use.

Q: Can Nopil affect my ability to drive or operate machinery?

Official safety warnings advise that Nopil can cause central nervous system effects, such as dizziness and somnolence (sleepiness). Patients are warned about the potential for these effects to impair their ability to drive or operate heavy machinery safely.

How should Nopil be stored and disposed of?

Official Storage and Disposal of Nopil

The storage of Nopil (Nopiline) tablets/capsules is strictly defined by regulatory guidelines to ensure product quality and integrity.

Storage Requirement Specification
Temperature Store at Controlled Room Temperature, 20 C to 25 C (68 F to 77 F). Excursions up to 30 C (86 F) are permitted.
Protection Must be protected from excessive heat, moisture, and direct light. Do not freeze.
Container Keep the product in its original container and ensure the cap is tightly closed.

Handling and Disposal Mandates

All medicines must be kept out of the sight and reach of children and pets, as required by national health authorities. For disposal of unused or expired Nopil, the official guidelines prioritize a drug take-back program or an authorized collection site. If a take-back option is unavailable, the medication must be mixed with an undesirable substance (like coffee grounds or dirt), sealed in a container, and placed in household trash. Do not flush the product down the toilet.

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

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