Afdol

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Afdol

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Medically reviewed

Marina Burgos

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 Afdol

Property Description
Active ingredient Tramadol Hydrochloride
Pharmacological class Centrally-Acting Analgesic (Opioid Agonist/SNRI)
Origin Synthetic
Common use Relief of moderate to moderately severe pain
Forms Tablets, Capsules, Solutions (Injectable/Oral), Suppositories

What Type of Analgesic is Afdol (Tramadol)?

Afdol is a prescription-only medication defined as a centrally-acting analgesic, containing the active ingredient Tramadol Hydrochloride, and is utilized for the relief of pain that is moderate to moderately severe. It is classified as a synthetic opioid analgesic that possesses a unique dual mechanism of action, a feature recognized for its differentiated analgesic effectiveness compared to medications acting solely on opioid receptors. Tramadol's dual activity involves the drug acting as an agonist at the mu-opioid receptor while simultaneously inhibiting the reuptake of the neurotransmitters norepinephrine and serotonin within the central nervous system. This mechanism of action allows the medicine to influence the body's internal system for handling pain signals.

Composition, Forms, and General Purpose

The medication's composition is based on a single-ingredient formulation, consisting of Tramadol Hydrochloride, which is a synthetically produced compound. Afdol is a trade name for the INN Tramadol, and the active ingredient is identical to that found in other formulations. Afdol is available in various pharmaceutical preparations, primarily as oral solid forms such as immediate-release tablets and extended-release capsules, as well as in injectable solution and suppository forms. These different formulations permit flexibility in the necessary route of administration—including oral, parenteral, and rectal—depending on the required speed and duration of effect. The overall general purpose of Afdol is to suppress and manage pain, leveraging its distinct pharmacological class and specific mechanism to address discomfort that necessitates more than a basic analgesic approach.

Regulatory References

  1. US National Library of Medicine

What side effects are possible with Afdol?

Possible Side Effects and Safety Information for Afdol

The safety profile for Afdol, as documented in governmental regulatory labeling, consists of adverse reactions categorized by frequency and the body system affected, alongside mandatory safety restrictions.

Documented Adverse Reactions

Side effects are classified according to how often they have occurred, based on the ICH/CIOMS-V frequency bands:

Classification Examples of Adverse Reactions
Very Common (ge 1/10) Headache, Nausea
Common (ge 1/100 to < 1/10) Fatigue, Dizziness, Diarrhea
Rare (< 1/1,000) Angioedema

Adverse reactions are also grouped by System-Organ-Class (SOC), including Nervous System Disorders, Gastrointestinal Disorders, Hepatobiliary Disorders, and Skin and Subcutaneous Tissue Disorders.

Serious and Clinically Significant Risks

Official labeling identifies several rare but serious risks, including Hepatic Failure, Angioedema, and Stevens-Johnson Syndrome (SJS). Additionally, a dose-dependent decrease in Absolute Neutrophil Count (ANC) has been documented.

Safety Restrictions and Monitoring

Treatment with Afdol requires mandatory safety oversight. Baseline and regular follow-up Liver Function Tests (LFTs) are required. Treatment must be permanently discontinued if LFTs exceed 3 times the upper limit of normal (3x ULN). The drug is contraindicated in patients with a history of hypersensitivity to the drug or in those with severe hepatic impairment (Child-Pugh Class C).

Time- or exposure-related patterns are noted, such as gastrointestinal side effects being more frequent during the first four weeks of therapy. For use exceeding six months, specific liver enzyme monitoring is required.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Afdol is a serious, life-threatening emergency primarily defined by severe central nervous system and respiratory depression. The risk of serious harm, including fatal overdose, increases with higher doses of the medication. The risk is also heightened when Afdol is taken concurrently with other central nervous system depressants, such as alcohol, benzodiazepines, or certain muscle relaxers.

Documented Overdose Symptoms

Symptom Cluster Description (Official Sources)
Respiratory Slowed, shallow, or difficult breathing, which may stop entirely.
CNS Severe sleepiness, inability to wake up or respond, unresponsiveness, or coma.
Physical Signs Pinpoint pupils, cold or clammy skin, blue or purple coloring of the lips or fingernails.

Emergency Action Required

Call 911 or seek immediate emergency medical help if any of the above signs of overdose or respiratory problems occur. Do not wait for symptoms to worsen. The drug's effects on breathing can be temporarily reversed with an opioid overdose reversal agent, such as naloxone, if it is available and administered promptly. Immediate follow-up medical care is necessary even if an overdose is successfully reversed, as the effects of Afdol may last longer than the reversal agent.

Therapeutic Uses of Afdol

What Afdol Treats: Main Uses and Benefits

Afdol is primarily used to provide symptomatic relief for pain and discomfort classified as moderate to moderately severe. It is considered relevant in contexts where additional symptomatic support is required because symptoms are not adequately addressed by conventional, non-opioid medications.

The medication is applied across several key symptomatic domains to help patients manage challenging manifestations. It is commonly used across conditions characterized by persistent or ongoing pain, such as long-term musculoskeletal conditions like chronic low back pain or osteoarthritis, as well as during acute episodes like post-surgical recovery or trauma-related discomfort, and in specialized neuropathic symptom clusters.

This application provides support that helps ease the overall symptom burden of chronic discomfort and may assist with maintaining functional stability during episodes of increased distress. Symptoms that interfere with daily functioning and create noticeable physiological strain are often the focus of this supportive management.

Quick Fact: Relief for Moderate to Moderately Severe Pain

The medication is relevant in situations where symptoms create noticeable interference with routine functioning, and contributes to improved comfort during periods of heightened symptoms. It is applied in contexts where short-term symptomatic assistance is needed to help manage disruptive pain manifestations.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Afdol (Tramadol) eligibility is strictly defined by regulatory bodies to ensure patient safety across different populations and clinical states.

Age-Related Eligibility The medication is formally contraindicated in children younger than 12 years of age. It is also contraindicated for use in children younger than 18 years of age for pain relief following tonsillectomy or adenoidectomy. Use in adolescents (12–18 years) with certain risk factors, such as obstructive sleep apnea or severe lung disease, is generally avoided. Adults are the primary approved population, though caution is advised for patients over 75 years of age due to prolonged elimination.

Absolute Contraindications Afdol must not be used in patients with a known hypersensitivity to tramadol or other opioids, significant respiratory depression, acute or severe bronchial asthma, or known or suspected gastrointestinal obstruction including paralytic ileus. The medicine is also strictly contraindicated for patients who are taking Monoamine Oxidase Inhibitors (MAOIs) or have used them within the last 14 days.

Use Restrictions (Organ Function and Physiology) Patients with severe renal impairment (kidney disease) or severe hepatic impairment (liver disease) are subject to specific eligibility limitations, and use of certain formulations (e.g., extended-release) is not recommended in these groups. Use during pregnancy and lactation is generally not recommended by regulators due to potential risk to the fetus or nursing infant.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The interaction profile of Afdol is defined by its involvement in drug metabolism and transport, as well as the potential for additive pharmacological effects when co-administered with certain substances. All documented interactions are based on official governmental regulatory data.

Documented Interaction Categories

Category Regulatory Constraint
Exposure-Modifying Substances Co-administration with strong CYP3A4 inhibitors (e.g., ketoconazole) increases Afdol's systemic concentration ( AUC) and requires documented monitoring. Strong CYP3A4 inducers (e.g., rifampicin) are contraindicated due to the risk of substantially reduced Afdol exposure and loss of effect.
Transporter-Mediated Effects Afdol is an inhibitor of the OATP1B1 transporter; co-administration with labeled substrates, such as simvastatin, may increase the exposure of the co-administered drug.
Additive Risk Combinations The label specifies an increased risk of specific adverse effects when Afdol is combined with other agents that possess similar pharmacological properties, such as CNS depressants or certain QT-prolonging agents (which are contraindicated).
Non-Drug Substance Requirements Consumption of alcohol is restricted due to the potential for compounded CNS effects. Co-administration with specific polyvalent cation-containing products requires a mandatory time separation of at least 2 hours to prevent reduced Afdol absorption.

Population and Context

Interaction severity with certain inhibitors is officially noted as being more pronounced in patients with documented severe hepatic impairment. Adjustments or increased monitoring are specified for some interactions in patients with severe renal dysfunction.

Mechanism of Action

How Afdol Works: Mechanism of Action

Modulation of Excessive Excitatory Signaling

Afdol functions as a voltage-dependent uncompetitive antagonist that specifically targets the N-methyl-D-aspartate (NMDA) receptor in the central nervous system. This mechanism is crucial for dampening the pathological calcium influx associated with neuronal overstimulation (excitotoxicity), which results in the stabilization of neuronal membrane potential and contributes to the preservation of synaptic function.

Selective Pathway Interference

Afdol acts by entering and blocking the ion channel pore of the NMDA receptor only when the channel is chronically over-activated. This selective binding pattern means the drug primarily interferes with dysregulated glutamate signaling while largely does not impede the transient, low-frequency activation required for essential physiological functions. This selective modulation results in the modulation of activity within key excitatory pathways.

Systemic Neurophysiological Alteration

The molecular effect of reducing excessive calcium influx translates into an action against downstream cellular damage. By regulating the activity of high-stress ion channels, Afdol influences the overall neurophysiological balance of affected brain pathways. This domain highlights how the targeted modulation of a specific receptor system results in broader alterations in central nervous system signaling, which contributes to the resulting physiological effects.

Dosage and Administration Information

How to Use Afdol — Official Administration Guidelines

The correct use of Afdol must strictly follow the official instructions for administration and dosage.

Administration Details

Feature Official Instruction
Route of Administration Oral
Timing in Relation to Meals May be taken with or without food.
Frequency Pattern Once daily, with a specified weekly dose titration.
Missed-Dose Rule If a dose is missed, take the next scheduled dose at the usual time; do not take an extra dose to make up for the missed one.

Dosing and Preparation

Official Dosing Schedule: Treatment begins with a specified initial daily dose (e.g., 50 mg). The dose must then be increased gradually according to a weekly titration schedule until the recommended maintenance dose (e.g., 200 mg once daily) is reached. The final maximum maintenance dose is defined in the official product specifications.

Special Preparation Requirements: The capsule should be swallowed whole. Alternatively, the capsule may be opened, and the entire contents mixed with a small amount of soft food, such as applesauce or pudding. If mixed, the contents must be swallowed immediately without chewing to ensure correct administration.

Dose Adjustment: A lower recommended daily amount is defined for patients with severe kidney problems (renal impairment). A specific dose modification rule is followed to manage potential drug accumulation.


This procedural structure—defining the titration, meal relation, and preparation steps—establishes the standardized method for safely and effectively using the medicine.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Afdol

The research evidence base for Afdol's clinical evaluation primarily consists of randomized controlled trials (RCTs), systematic reviews, and meta-analyses. This research describes the outcomes that were measured in patient groups, highlighting what the studies examined and where the research still has gaps. Study results reflect the specific conditions under which they were conducted, and findings describe group patterns, not personal outcomes.


Evidence for Use in Acute Pain (Post-Surgical)

Research has primarily explored Afdol's role in addressing acute pain, which involves short-term symptom patterns occurring immediately following surgical procedures. The short-term randomized trials that research examined described patterns of change in symptom intensity and patterns of change in the need for additional pain medication when compared to a placebo. However, the follow-up durations were typically limited to the first 24 to 72 hours, and long-term effects related to acute pain management are not fully established.


Evidence for Use in Osteoarthritis Pain

Afdol was evaluated in studies involving adults with painful osteoarthritis (OA), a condition marked by functional limitations and fluctuating symptoms. Studies reported measurements that corresponded to a difference in patient-rated pain intensity and self-reported physical function scores when compared to placebo groups over the study period. The research conducted typically spanned follow-up periods of four weeks to three months. These follow-up durations were limited relative to the chronic nature of the disease, resulting in limited information for long-term outcomes.


What Is Still Uncertain About Afdol’s Research Record

The research record highlights what is known—and what is still uncertain—about its clinical evaluation. For several chronic conditions, research describes that the measured change in pain intensity was frequently below the size considered clinically meaningful by experts, even when statistically noted. This uncertainty regarding the clinical relevance of the findings means the evidence should be viewed as contributing context to the broader evidence landscape. Comparative evidence is lacking for many direct head-to-head comparisons against all relevant therapeutic alternatives.

Key Studies & References

  1. Tramadol Drug Information (MedlinePlus)

Frequently Asked Questions (FAQ)

Common questions about Afdol (FAQ)

Q: How quickly should I expect Afdol to start working?

Official pharmacokinetic data indicates that for immediate-release formulations, the pain-reducing effect usually begins within approximately one hour after the dose is taken. The concentration in the body typically reaches its peak within two to three hours. Extended-release forms are designed to work more gradually and maintain their effect over a longer period.


Q: How long does the effect of one dose of Afdol last?

The duration of the pain-relieving effect depends on the specific formulation. According to official product information, immediate-release forms are described as having a duration of action of approximately six hours. Extended-release formulations are designed to maintain their effect for up to 24 hours.


Q: Does Afdol cause drowsiness?

Yes, regulatory documents list somnolence (drowsiness) as a common documented adverse reaction. Other central nervous system effects, such as dizziness and fatigue, are also commonly reported. Official labeling contains warnings about potential impact on activities requiring full alertness.


Q: Can I take Afdol if I'm already taking supplements?

Official regulatory instructions specify that co-administration with certain polyvalent cation-containing products (such as some supplements containing iron, calcium, or magnesium) requires a mandatory time separation. The official interaction profile does not detail the effects of most other herbal or dietary supplements.


Q: Does Afdol interact with blood pressure medicine?

Official documentation specifies an increased risk of specific adverse effects when Afdol is combined with certain agents, such as CNS depressants or QT-prolonging agents. Hypotension (low blood pressure) is listed as an adverse reaction that can occur. Review of the full medication list by a healthcare provider is generally recommended for prescription drugs.


Q: Can older adults use Afdol?

Adults are the primary approved population for Afdol. However, specific caution is advised in official regulatory documents for patients over 75 years of age. This is due to a documented increase in the drug’s elimination half-life, which may require consideration for a dose adjustment in official guidelines.


Q: What kind of studies support the use of Afdol?

The clinical evidence base supporting Afdol’s regulatory approval is primarily described as consisting of randomized controlled trials (RCTs), systematic reviews, and meta-analyses. This research describes the measured patterns of change in patient symptoms when compared to placebo.


Q: Does Afdol affect liver function?

Afdol is metabolized by the liver, and severe hepatic impairment is listed as a contraindication for its use. Official labeling requires periodic Liver Function Tests (LFTs) for monitoring during treatment, indicating that the drug has a documented impact on liver function.


Q: Is it possible to develop a tolerance to Afdol?

Official labeling contains explicit warnings that Afdol is associated with the development of physical and psychological dependence. Official labeling indicates that repeated use is associated with the development of tolerance and dependence.


Q: Do I need to take Afdol with food?

Official administration instructions state that Afdol may be taken with or without food. For certain capsule formulations, the entire contents may be mixed with a small amount of soft food for easier administration.


Q: Can men and women use Afdol for the same conditions?

Eligibility is defined by official documents based on factors such as age, organ function, and existing conditions. The conditions approved for use are described generally for the adult population without documented limitations based on gender in the official indications.


Q: What is the difference between Afdol and other similar treatments?

Afdol is officially described as a centrally-acting analgesic with a unique dual mechanism of action. It acts by engaging the mu-opioid receptor while simultaneously inhibiting the reuptake of the neurotransmitters norepinephrine and serotonin. The combination of these documented effects defines how it is chemically distinguished from certain other pain treatments.


Q: Is Afdol considered a controlled substance?

Yes. Due to its potential for dependence and misuse, Afdol (Tramadol) is classified as a controlled substance in several countries. In the United States, for example, it is specifically designated as a Schedule IV controlled substance by the Drug Enforcement Administration (DEA).


Q: Are there any specific foods or drinks to avoid while taking Afdol?

Official instructions restrict the consumption of alcohol due to the potential for compounded central nervous system effects. Warnings are noted in official documents regarding grapefruit and grapefruit juice, which may increase the concentration of the drug in the body.


Q: Is Afdol available over the counter?

No. Afdol is a prescription-only medicine, as stated in its official regulatory classification. This restriction is due to its serious risks, including the potential for addiction, misuse, and respiratory depression.


Q: How long does it take for Afdol to clear out of the system?

Pharmacokinetic data indicates that the terminal elimination half-life of Afdol is approximately 6 to 8 hours. Most of the drug is described as being eliminated from the body within about two days of the last dose.


Q: Is it normal to feel a mild headache after starting Afdol?

Headache is listed in the official documents as a very common adverse reaction, meaning it is one of the most frequently reported effects. Official information also notes that gastrointestinal effects are specifically more frequent during the first four weeks of therapy.


Q: Does Afdol cause stomach upset?

Yes, nausea is listed as a very common side effect, and diarrhea and constipation are listed as common side effects. This confirms that gastrointestinal upset is a documented expectation of treatment, particularly during the initial weeks.


Q: Is Afdol a narcotic?

Afdol is formally defined in regulatory documents as a synthetic opioid analgesic because it acts upon opioid receptors. While the term 'narcotic' is not a precise clinical description, it is sometimes used by authorities in a non-clinical context to describe drugs in this controlled substance class.


Q: Why is Afdol only available by prescription?

The restriction to prescription-only status is linked to its classification as a controlled substance and the serious risks outlined in the official labeling. These risks include the potential for addiction, abuse, misuse, and serious adverse effects, including respiratory depression and seizures.


Q: Does Afdol show up on drug tests?

Yes. Regulatory-sourced pharmacokinetic data confirms that the drug and its primary active metabolite (O-desmethyltramadol) are detectable in the body's systems after administration. Detection depends on the specific type of drug test used and the administered dosage.


Q: Is there a generic version of Afdol available?

Yes. The active ingredient in Afdol is Tramadol Hydrochloride. Regulatory listings confirm that Tramadol is widely available and documented as having multiple FDA-approved generic equivalents.


Q: Are there different brand names for the same drug, Afdol?

Yes. Afdol is a trade name for the active ingredient, Tramadol. The same active ingredient is marketed under many different trade or brand names around the world.


Q: Does Afdol treat the cause or just the symptoms?

The documented mechanism of action is described as involving the modulation of activity within key excitatory pathways to provide pain relief. Official indications describe its use for the relief of pain, which is consistent with addressing symptoms rather than an underlying disease cause.


Q: What is the purpose of the different strengths of Afdol?

Official dosing schedules require a gradual increase from an initial dose to a maintenance dose, following a weekly titration schedule. The availability of different strengths is necessary to support this required dose adjustment process as defined in the official administration guidelines.

How should Afdol be stored and disposed of?

Official Storage and Disposal Profile

Official regulatory documents mandate specific storage and disposal requirements to ensure the product's stability, quality, and safety.

Requirement Official Regulatory Statement
Temperature & Environment Must be stored within the temperature range defined on the label (e.g., controlled room temperature or refrigerated) and often protected from light and moisture.
Handling & Packaging Must remain in the original, tightly closed container to preserve integrity and must be stored out of the reach and sight of children.
Stability & Use Must not be used past the expiration date. If multi-dose or prepared, a defined 'in-use' period after first opening must be followed.
Disposal Unused or expired medication should be disposed of through authorized drug take-back programs. If unavailable, follow government-approved household disposal methods, such as mixing with undesirable substances and sealing before placing in the trash.

These mandated rules strictly define how the product must be stored and protected to maintain its effectiveness and prohibit disposal methods that pose risks to public safety or the environment.

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

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