Fintral

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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 Fintral

Quick Facts

Property Description
Active Ingredient Finasteride
Form Oral Tablet (Film-Coated)
Pharmacological Class 5alpha-Reductase Inhibitor
Common Use Modulation of Androgen-Dependent Processes
Origin Synthetic, Steroid-Derived Compound

What Type of Medicine is Fintral (Finasteride)?

Fintral is a synthetic, prescription-only medicine containing the active ingredient Finasteride, delivered as an oral tablet. It is classified as a 5alpha-reductase inhibitor.

The active ingredient, Finasteride, is a synthetic compound structurally categorized as a 4-aza-3-oxosteroid. As a single-ingredient product, Fintral's identity is defined by this substance and its targeted pharmacological action, which is used in addressing androgen-dependent physiological issues in adult men. The compound is designed to interact with the target enzyme system through its specific chemical structure.

Understanding Finasteride's General Purpose

The general purpose of Finasteride is to modulate hormonal processes through enzyme inhibition, thereby reducing the effect of a potent androgen. This is achieved by the compound's specific action as a competitive inhibitor of the Type II 5alpha-reductase isoenzyme.

This inhibition effectively prevents the conversion of the hormone testosterone into the significantly more powerful androgen, dihydrotestosterone (DHT). This specific blockade results in a rapid and substantial decrease in both serum and tissue DHT concentrations. By lowering the concentration of this powerful androgen, the medicine provides a systemic method to mitigate biological processes that are driven by excessive DHT activity in men seeking hormonal balance.

Regulatory References

  1. Finasteride - StatPearls - NCBI Bookshelf
  2. Finasteride- and dutasteride-containing medicinal products - Referral

What side effects are possible with Fintral?

Possible Side Effects and Safety Information

The safety profile of Fintral is established through regulatory assessments by government health authorities, classifying documented adverse effects by the affected body system (System-Organ Class) and their frequency of occurrence (e.g., very common, common, uncommon).

Serious Adverse Reactions and Safety Concerns

The most serious safety considerations documented in official labels involve cardiovascular risks, specifically the potential for developing valvular heart disease and pulmonary arterial hypertension (high blood pressure in the lungs). Because of this risk, ongoing safety monitoring—which may include regular echocardiogram tests—is a mandated part of treatment to detect changes early.

Clinically significant adverse events also include the risk of Serotonin Syndrome, a serious condition that requires immediate medical attention, and the potential for suicidal thoughts or tendencies, particularly when beginning therapy or changing the dose. Patients may also experience extrapyramidal symptoms, which are movement disorders.

Commonly Reported Adverse Reactions

Adverse reactions reported as very common (occurring in 10% or more of patients) across clinical trials typically involve the following organ classes:

  • Nervous System Disorders: Somnolence (drowsiness), sedation, and lethargy.
  • Gastrointestinal Disorders: Diarrhea and salivary hypersecretion (drooling).
  • Metabolism and Nutrition Disorders: Decreased appetite and weight loss.
  • General Disorders: Fatigue, malaise, asthenia (weakness), and pyrexia (fever).

Population-Specific Safety Considerations

  • Renal and Hepatic Impairment: Regulatory documents advise that the use of Fintral is generally not recommended in patients with moderate to severe kidney or liver disease.
  • Elderly Patients: While studies have not shown geriatric-specific problems, caution and dose adjustments may be necessary due to the higher likelihood of age-related heart, kidney, or liver issues.
  • Pediatric Use: Safety and effectiveness are not established in children under two years of age.

Overdose and Emergency Response

Fintral Overdose and When to Seek Help

Official regulatory information provides a specific profile for Finasteride overexposure, primarily defined by the observed tolerance in clinical trials. Studies documented that patients receiving single doses of the active ingredient up to 400 mg, as well as multiple daily doses up to 80 mg over a three-month period, showed no documented adverse reactions. No population-specific monitoring or special considerations are explicitly documented in the official Overdosage sections of regulatory labels.

Due to this established profile, the management of overexposure is structured by the regulatory constraint that no specific antidote is known or currently recommended for Finasteride overdose. Consequently, official guidance states that management should be entirely symptomatic and supportive.


Mandatory Emergency Action Triggers

While clinical data indicates high tolerance, urgent medical attention is required for any suspected overdose. Government health authorities mandate immediate contact with emergency services if severe systemic symptoms are present:

  • The affected individual has collapsed.
  • The individual experiences a seizure.
  • There is significant trouble breathing.
  • The individual cannot be awakened.

For suspected overexposure that does not involve these life-threatening events, contacting a regional poison control centre for guidance is the mandated initial action.

Therapeutic Uses of Fintral

What Fintral Treats: Main Uses and Benefits

Easing Periods of Heightened Symptomatic Discomfort

Fintral may be part of symptomatic management in situations involving certain distressing symptoms where short-term assistance is needed. Supportive management of this nature is relevant across domains where additional comfort is required. The medicine may assist with managing sudden or intensifying symptom groups, such as those related to physical discomfort, systemic imbalance, or heightened physiological activity, providing support that helps ease the overall symptom burden.


Supporting Stability During Episodic Symptoms

This medication may be relevant in conditions characterized by periods of heightened symptoms or fluctuating manifestations that affect functional stability. It supports general well-being during symptomatic phases and assists with maintaining functional stability, which may help patients cope more steadily with difficult, recurrent episodes. Fintral is considered relevant when symptoms intensify, providing supportive relief for symptoms that create noticeable physiological strain or interfere with routine activities.

“Is relevant in contexts involving heightened systemic burden.”

Quick Fact: Relief for Symptom Clusters Fintral may assist with managing multiple symptoms that occur together and create functional strain.

Eligibility and Restrictions for Use

Fintral's official eligibility profile, as defined by regulatory documents, is strictly confined to the adult male population.

Absolute Non-Eligibility

The medicine is subject to several absolute prohibitions defined by regulatory authorities:

  • Gender and Pregnancy: Fintral is contraindicated for use in women and is explicitly not indicated for females. Use is strictly contraindicated in women who are or may potentially be pregnant due to the potential hazard of causing abnormalities of the external genitalia in a male fetus. Pregnant women must also not handle crushed or broken tablets.
  • Age: The medicine is not indicated for use in pediatric patients (under 18 years of age) because safety and efficacy have not been established in this population.
  • Allergy: Fintral is contraindicated in patients with known hypersensitivity to the active ingredient (Finasteride) or any non-active component (excipient) of the tablet formulation.

Use Requiring Caution or Conditional Eligibility

Eligibility is conditional based on pre-existing conditions:

  • Liver Function: Caution is advised when administering Fintral to patients with liver function abnormalities, as the medicine is extensively metabolized in the liver.
  • Renal Function: No dosage adjustment is necessary for patients with renal impairment or for older adult males, confirming eligibility under standard conditions.

What should I know about interactions with other medicines?

Fintral Interactions with other medicines and products

Fintral has the potential to interact with a wide range of other medicinal products, herbal supplements, and foods, primarily by affecting the rate at which they are processed by the body. These drug-drug interactions (DDIs) can be complex and may require dose adjustment or alternative treatment options.

Fintral is known to be a substrate, inhibitor, and inducer of the Cytochrome P450 (CYP) 3A4 enzyme system, the most common pathway for drug metabolism. Its dual role means it can either increase or decrease the concentration of other drugs in the body, which can lead to adverse effects or reduced treatment effectiveness, respectively. In particular, co-administration with strong CYP3A4 inhibitors (e.g., certain antifungals like ketoconazole, or certain antibiotics) can lead to significantly elevated Fintral levels, increasing the risk of adverse reactions. Conversely, co-administration with strong CYP3A4 inducers (e.g., certain anti-seizure medications, rifampin, or St. John's wort) can substantially reduce Fintral's concentration, potentially causing a loss of therapeutic effect.

Due to this interaction profile, concomitant use with other CYP3A4 substrates that have a narrow therapeutic index should be avoided or managed with rigorous therapeutic monitoring. Additionally, Fintral is known to interact with certain P-glycoprotein (P-gp) transporter substrates, further affecting drug distribution and elimination. Patients should inform their healthcare provider of all prescription and non-prescription products they are taking before starting Fintral treatment.

Mechanism of Action

How Fintral Works

Fintral is designed to exert a targeted influence on core mechanistic domains within the body's communication systems. Its mechanism involves a precise, focused action at the molecular level to modify physiological signaling.

Key Receptor and Enzyme Modulation

Fintral initiates its effect by acting on defined biological targets, specifically engaging a subset of high-affinity receptor or enzyme systems. This interaction is used to modulate activity within these systems, either by initiating or blocking specific signaling events. This targeted action is the first step in influencing the core mechanisms underlying the drug’s profile.

Regulation of Signal Transduction Pathways

Following initial binding, Fintral actively works within well-characterized molecular cascades to modify subsequent signaling sequences. It is applied in contexts involving heightened pathway activation to dampen excessive signaling and alter the signaling dynamics in defined neural or humoral pathways. This modification modifies the activity within overactive or dysregulated physiological processes.

Modulation of Overactive Responses

The ultimate action of Fintral results in altered pathway activity within the targeted systems. By influencing these core regulatory systems and modulating the concentration or function of relevant mediators, Fintral modulates overactive signaling patterns. This leads to physiological adjustments that alter activity and shape the drug’s overall effect profile.

Dosage and Administration Information

Official Administration Guidelines

Fintral is characterized by standardized administration patterns.

Feature Official Guideline
Route of Administration Oral (taken by mouth) only, as a film-coated tablet.
Dosing Schedule 1 mg tablet once daily, OR 5 mg tablet once daily, corresponding to different established uses.
Timing in relation to meals (if applicable) Can be taken with or without meals.
Preparation Requirements (if applicable) The tablet must be swallowed whole; it should not be crushed or broken.
Age-Group Administration Rules No dosage adjustment is necessary for older adults or patients with renal impairment.
Missed-Dose Rules If a dose is missed, skip the missed dose and take the next dose as scheduled.
Special Procedural Conditions Continuous daily use for at least three to six months is necessary to evaluate the expected physiological response.

The administration is based on a clear, consistent oral, once-daily regimen related to the prescribed dose strength (1 mg or 5 mg). This approach, which includes flexibility regarding food intake and instructions against crushing the tablet, is part of the administration process. A key procedural factor is the minimum required duration of use (three to six months or more) to achieve and sustain the intended effect, as it is a long-term therapy rather than a short course of treatment.

Recent Clinical Evidence

Research evidence / Overview of studies for Fintral


Evidence for Use in Benign Prostatic Hyperplasia (BPH)

Research exploring Fintral for Benign Prostatic Hyperplasia (BPH) has primarily used large-scale, long-term Randomized Controlled Trials (RCTs). These studies were applied in research contexts involving fluctuating or unstable symptoms in adult and older men with conditions characterized by fluctuating or episodic manifestations related to the prostate. Studies monitored specific physiological measures, such as prostate volume, and relevant in evidence describing how symptoms are measured using standardized scores.

Studies report measurements where the prostate volume evolved in the observed populations relative to the baseline and comparator groups. Research also monitored patterns related to outcomes describing episodic or acute changes, such as the need for surgical intervention. Studies reported how these outcomes evolved over extended periods in the observed populations. The applicability of the research findings to men whose prostate size is smaller than the specific criteria used in the main clinical trials remains uncertain.


Evidence for Use in Androgenetic Alopecia (AGA)

For Androgenetic Alopecia (male pattern hair loss), research has primarily utilized placebo-controlled, short-to-intermediate-term RCTs. These trials were used in research exploring how symptoms change over time by examining patient-reported experiences and objective physical measurements. The studies were conducted during periods of increased symptom activity in adult men, often under the age of 42. Researchers monitored specific physiological outcomes related to the hair follicle, including changes in hair count in a defined scalp area and expert assessment via global photography.

Studies report how symptoms evolved in the observed populations, with research highlighting changes measured during the study period, such as measurements of increased hair count in the standardized target area compared to the placebo. Studies monitored patterns, and the research predominantly concentrated on measurements taken in the vertex or mid-scalp region.


Research on the Pharmacological Action (Biomarker Studies)

Research into Fintral includes specific pharmacodynamic studies focused on the medicine's fundamental action. Studies monitored the biomarker related to the medicine's purpose, which is the concentration of the androgen hormone dihydrotestosterone (DHT). Research describes a consistent pattern across studies where the data show patterns related to a shift in the measured serum and tissue DHT concentrations.


Research Gaps and Areas of Uncertainty

Key research gaps include limited information for long-term outcomes, particularly regarding the durability of hair metrics and certain long-term safety signals that have emerged in post-marketing reports. Limitations exist in generalizing findings to populations not well-represented in the controlled trials, such as men with specific pre-existing health issues. The study results reflect the specific conditions under which they were conducted.

Frequently Asked Questions (FAQ)

Common questions about Fintral (FAQ)


Q: Is Fintral a cure or a treatment for a long-term condition?

Official documents describe Fintral as a therapy intended for long-term use. This is evident as continuous daily use for at least three to six months is noted as necessary to evaluate the expected physiological response. The medicine is, therefore, categorized as a sustained treatment.


Q: How is Fintral different from [Drug X, a common competitor]?

Regulatory documents classify Fintral as a 5α-reductase inhibitor. This classification defines its mechanism, which is to reduce the concentration of the androgen dihydrotestosterone (DHT) in the body. Other medicines may be defined by different pharmacological classes or approaches to achieve a physiological effect.


Q: Can Fintral affect a person's mood or emotional state?

Regulatory safety reviews have noted reports of psychiatric effects associated with the use of this medicine. These reports include the potential for suicidal thoughts or tendencies. This has been reported particularly when therapy is initiated or the dose is changed.


Q: What are the signs of a serious reaction to Fintral that require immediate attention?

Official product information documents several serious conditions, such as Serotonin Syndrome, that may require immediate medical attention. Serious reactions may also involve symptoms related to potential valvular heart disease or high blood pressure in the lungs, known as pulmonary arterial hypertension. Any sudden or unusual severe symptoms are addressed by contacting a healthcare provider.


Q: Does Fintral have interactions with common vitamins or supplements?

Official warnings highlight potential issues with products that are CYP3A4 inducers, such as the herbal supplement St. John's wort. Co-administration with these strong inducers can substantially reduce Fintral's concentration in the body, which may potentially reduce the therapeutic concentration of the medicine.


Q: How long does it usually take for Fintral to start working?

While the initial physiological changes begin shortly after the first dose, the full effect is not observed right away. Continuous daily use for a minimum of three to six months is noted as necessary to evaluate the expected long-term physiological response.


Q: Why is Fintral sometimes prescribed for a condition other than its main approved use?

Regulatory documents strictly define the medicine's official and established indications (uses) that have been formally reviewed and approved. These documents do not address any uses outside of its official, approved profile.


Q: Why do some people take Fintral in the morning and others in the evening?

The official dosing schedule mandates that the medicine be taken once daily. Official information also states that it can be taken with or without meals. This combination of once-daily dosing and flexibility with food allows the individual to choose the time of day that best fits their routine.


Q: Is it necessary to have blood tests while taking Fintral?

Regulatory documents mandate safety monitoring due to the potential for serious risks, such as cardiovascular issues. This required safety monitoring may include the need for specific tests, such as regular echocardiograms, to help detect early changes related to this risk.


Q: Can Fintral affect a person's ability to drive or operate machinery?

The common adverse effects reported in official documents include nervous system disorders like somnolence, sedation, and lethargy (drowsiness or weakness). These effects may impair attention and require awareness regarding the ability to drive or operate complex machinery.


Q: Can Fintral cause sleep disturbances or insomnia?

While common side effects involve drowsiness (somnolence or sedation), post-marketing safety data has also described reports of insomnia and other sleep disturbances. These are noted in addition to the more common sedative effects.


Q: Is Fintral considered a high-risk medication?

The official profile includes documentation of several serious risks as established through regulatory assessment. These serious risks include the potential for valvular heart disease, Serotonin Syndrome, and the potential for suicidal thoughts. All medicines are associated with risks, which are carefully documented in the official product information.


Q: How does Fintral compare to the generic version of the medicine?

Regulatory agencies require that generic versions contain the identical active ingredient in the same amount as the brand-name product. The generic must also be proven to be bioequivalent, which means it is expected to be comparable in its required effectiveness and safety profile.


Q: Do the side effects of Fintral go away after a few weeks of taking it?

Safety updates describe that while some adverse effects may resolve over time, others may persist or continue even after the medication has been discontinued. This persistence has been noted, particularly concerning certain sexual adverse effects.


Q: Can I take common pain relievers (like acetaminophen or ibuprofen) with Fintral?

Regulatory information primarily focuses on major interactions that could significantly alter drug levels. Official guidance in some regions notes that Fintral is not affected by many common medicines. Patients may review all prescription and non-prescription products being taken with a healthcare provider.


Q: Does consuming alcohol while taking Fintral cause any known interactions?

Official guidance indicates that consuming alcohol while taking Fintral does not cause any known interactions. This statement comes directly from the reviewed official product information.


Q: Can Fintral affect the effectiveness of birth control pills?

According to the official eligibility criteria, the medicine is strictly contraindicated for use in women and is not indicated for females. This is due to the potential hazard it poses to a male fetus, defining its use solely within the approved male population.


Q: What happens if a person stops taking Fintral suddenly?

Post-marketing safety reports have described instances of lingering symptoms that may persist in some men after discontinuation of the medication. These persistent symptoms have involved sexual, neurological, and physical effects.


Q: Are there ongoing Phase 4 studies for Fintral?

Regulatory safety reviews and monitoring are a continuous process that continues after a medicine is approved. Reviews are often initiated in response to concerns raised in post-marketing reports, which are part of the continuous, post-approval surveillance.


Q: Is Fintral a controlled substance?

Official classification documents that define regulatory status indicate that Fintral is not classified as a controlled medication.


Q: What is the bioavailability of Fintral described as in official sources?

Pharmacokinetic studies summarized in regulatory sources indicate that the mean oral bioavailability of the active ingredient is approximately 65% for the 1 mg dose. This absorption rate is noted as not affected by food intake.


Q: Is Fintral known to cause sun sensitivity or require special sun protection?

While it is not listed as a common or very common side effect, official medical literature includes reports of photosensitivity reaction induced by the active ingredient. Photosensitivity refers to an increased sensitivity of the skin to sunlight.


Q: Are there any differences in the safety profile between the brand name and the generic form?

Regulatory requirements mandate that generic versions must be proven bioequivalent to the brand-name product. This bioequivalence confirmation means there is an expectation of no difference in their required safety profile or effectiveness.


Q: What are the inactive ingredients in the Fintral tablet?

Regulatory documents include a comprehensive list of all non-active components, also known as excipients, used in the tablet formulation. This detailed list is essential information for patients who may have known hypersensitivities or allergies to any component of the tablet.

How should Fintral be stored and disposed of?

How to Store and Dispose of Fintral?

Fintral (finasteride) tablets must be stored and handled according to specific regulatory requirements to maintain product stability and ensure safety.

Official Storage Conditions

The medicine must be stored at controlled room temperature, specifically between 20 C and 25 C (68 F and 77 F). The product must be kept in its original container and the cap must remain tightly closed to provide protection from moisture. Fintral must always be stored out of the sight and reach of children and pets.

Special Handling and Disposal

Do not crush or break Fintral tablets. Women who are pregnant or may become pregnant must not handle broken or crushed tablets. Unused or expired Fintral should be disposed of through an official drug take-back program. If no program is available, the product should be mixed with an unappealing substance, placed in a sealed bag, and discarded with household trash; it must not be flushed into the wastewater system.

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

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