Dutaprost

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Dutaprost

Medically reviewed

Laura Arias

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 Dutaprost

Quick Facts

Property Description
Active Ingredient Dutasteride (INN)
Form Soft capsule (oral)
Pharmacological Class Dual 5α-reductase inhibitor
General Purpose Managing prostate gland enlargement
Origin Synthetic (Azasteroid)

Dutaprost is a prescription-only medicine whose fundamental identity centers on its active ingredient, Dutasteride. This compound places the preparation within the highly specific pharmacological class of dual 5α-reductase inhibitors, defining its systemic mechanism and general purpose in urological health. The drug entity is classified as a single product intended for a long-term therapeutic effect, which is clinically recognized for its sustained DHT suppression capabilities.

What Type of Medicine is Dutaprost and What is its Composition?

Dutasteride is a synthetic compound derived from the Azasteroid group. The drug is administered orally as a soft gelatin capsule containing the active ingredient dissolved in an oily solution. This specific soft capsule form is integral to the product's identity; it ensures the stable and effective delivery of the Dutasteride substance for absorption into the bloodstream. Clinical pharmacological studies confirm that Dutasteride provides a consistent reduction in serum Dihydrotestosterone (DHT) levels over time.

How Does Dutaprost Relate to the Prostate Gland?

The purpose of Dutaprost stems from its targeted action on a specific enzyme system. It is recognized for its function as a dual 5α-reductase inhibitor, meaning it blocks both the Type 1 and Type 2 forms of the 5α-reductase enzyme. This inhibition prevents the body from converting Testosterone into the more potent hormone, DHT, which is the primary natural substance responsible for stimulating prostate growth. The resulting suppression of this hormonal stimulus provides the general therapeutic benefit of managing conditions associated with the enlargement of the prostate gland, which is a typical use scenario. This action is effective for reducing prostate volume.

Regulatory References

  1. Clinical Pharmacokinetics Review

What side effects are possible with Dutaprost?

Possible Side Effects and Safety Information

This section outlines the adverse reactions and safety constraints for Dutaprost as documented in official government regulatory information.

Frequency-Classified Adverse Reactions

Side effects are classified by their documented frequency in regulatory sources:

Classification Examples of Reactions
Common (1/100 to < 1/10) Impotence, decreased libido, ejaculation disorders, breast tenderness/enlargement (gynaecomastia).
Uncommon (1/1,000 to < 1/100) Heart failure, alopecia, hirsutism.
Rare (< 1/1,000) Serious allergic reactions, including angioedema.
Not Known Male breast cancer, severe cutaneous reactions, depression.

Adverse reactions commonly affect the Reproductive system and breast disorders and the Skin and subcutaneous tissue disorders, based on the System-Organ-Class (SOC) classification.

Serious Adverse Reactions and Safety Constraints

Serious Reactions: Rare but clinically significant reactions documented include angioedema and cases of severe cutaneous reactions. Post-marketing reports have also included rare cases of male breast cancer.

Population-Specific Safety: Dutaprost is contraindicated in women who are or may become pregnant due to the risk of abnormal external genitalia development in a male fetus. Caution or restrictions are applied to use in patients with severe hepatic impairment.

Time-Related Patterns: Sexual function-related side effects, such as impotence and decreased libido, are officially noted as potentially being more common during the first year of treatment and decreasing over time.

Monitoring and Safety Limitations

Handling: The capsules must not be handled by women who are pregnant or of childbearing potential due to the risk of absorption.

PSA Testing: Dutaprost causes a reduction in serum Prostate-Specific Antigen (PSA) levels. Official regulatory guidance requires a baseline PSA measurement and the use of a multiplying factor to accurately interpret subsequent PSA results for prostate cancer screening.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documents indicate that Dutaprost (Dutasteride) overdose, even following ingestion of doses substantially higher than the recommended amount, does not result in the presentation of specific acute symptoms or unique adverse events beyond those typically associated with the medicine.

For any suspected over-ingestion, the established regulatory instruction is to contact a Poison Control Center immediately for specific guidance. Urgent medical attention must be sought, and emergency services (911) must be called immediately if the individual shows signs of a severe reaction, such as collapse, difficulty breathing, or seizure, which are general indicators for a medical emergency.

Management of an overdose event is officially stated to be symptomatic and supportive, as no specific antidote is known for Dutasteride. A key regulatory consideration in the management process is the drug's pharmacokinetic profile, specifically its long terminal elimination half-life of approximately five weeks. This factor dictates that healthcare providers must consider the potential for sustained systemic exposure during the required observation period. Furthermore, regulatory documents note that the half-life increases with age, a factor that influences the clearance consideration for older patients.

Therapeutic Uses of Dutaprost

Dutaprost is commonly used for managing chronic, hormone-sensitive conditions in men. The medication is commonly used for managing Benign Prostatic Hyperplasia (BPH), a condition characterized by periods of heightened symptoms due to prostate enlargement.

The therapeutic scope is relevant for conditions presenting with systemic or localized discomfort related to prostate-related issues and progressive hair loss. This includes management of symptomatic prostate enlargement, relief from bothersome Lower Urinary Tract Symptoms (LUTS), and treatment for progressive male pattern hair loss (Androgenetic Alopecia).

Primary Therapeutic Benefits

Its long-term use supports the goal of mitigating the progression of the condition by physically shrinking the prostate. This use may assist in reducing the likelihood of major complications, such as the development of Acute Urinary Retention or the need for surgical intervention. Furthermore, by easing challenging symptoms like urinary frequency and a weak stream, the medication contributes to improved comfort during periods of heightened symptoms.

“This medication supports patients in coping more steadily with symptom fluctuations associated with prostate enlargement.”

The use of Dutaprost is considered relevant in clinical settings that involve chronic, symptomatic discomfort and where additional management of these disruptive symptoms is appropriate.


Quick Fact: Relief for LUTS

Aspect Description
Condition Benign Prostatic Hyperplasia (BPH)
Symptom Type Voiding and Irritative LUTS
Primary Benefit May assist in reducing the likelihood of surgical intervention
Symptom Relief Easing challenges with urinary stream and frequency (nocturia)

Regulatory References

  1. U.S. National Library of Medicine MedlinePlus overview

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Dutaprost — Official Regulatory Information

The eligibility profile for Dutaprost (Dutasteride) is highly restrictive, defined by absolute prohibitions and specific conditional uses detailed in regulatory labeling.

Scope Element Official Regulatory Statement
Populations for whom use is allowed: Adult Men are the only approved population group [FDA Monograph] [HPRA SmPC]. Elderly (Geriatric) Men are eligible for use with no required dosage adjustment.
Populations for whom use is contraindicated: Women of all ages, Children and Adolescents (under 18 years of age), and patients with known hypersensitivity to Dutasteride or other 5α-reductase inhibitors.
Condition-specific rules: Severe hepatic impairment is a formal contraindication. Use requires caution in patients with mild to moderate hepatic impairment. Renal impairment does not require a dosage adjustment.
Pregnancy and lactation status: Pregnancy is a strict contraindication for women. Use is not indicated in women, and it is not known if the drug is excreted in human milk.
Eligibility-related restrictions: Women and children must avoid handling leaking capsules due to the risk of transdermal absorption. Men must not donate blood until at least six months after the last dose.

These official statements establish that the medicine's use is strictly limited to adult men who do not possess any documented exclusionary conditions, such as severe liver disease or drug hypersensitivity.

What should I know about interactions with other medicines?

Dutaprost Interactions with other medicines and products

Dutaprost (dutasteride) is metabolized in the liver, primarily by the cytochrome P450 (CYP) 3A4 and CYP3A5 enzymes. The potential for drug interactions is largely related to this metabolic pathway. Patients should inform their healthcare provider of all prescription and non-prescription medicines, herbal products, and supplements they are taking.

Product Class / Category Interacting Medicine(s) Explicitly Listed Interaction Concern (Official Classification)
Potent CYP3A4 Inhibitors Ritonavir, Ketoconazole Caution is advised; increased exposure to Dutaprost is expected, but no formal dose change is universally recommended.
Calcium Channel Antagonists Verapamil, Diltiazem Decreased Dutaprost clearance may occur, but the resultant change in exposure is generally not considered clinically significant.
Alpha-adrenergic Antagonists (when used in combination product) Tamsulosin Combination use requires careful consideration of both medicines' safety profiles.

Co-administration with potent, chronic CYP3A4 enzyme inhibitors, such as ritonavir or ketoconazole, should be approached with caution as the concentration of Dutaprost in the blood may increase. Tested drugs like warfarin, digoxin, and cholestyramine have not shown a clinically significant alteration in Dutaprost pharmacokinetics. Additionally, consumption of grapefruit juice may increase the risk of side effects from dutasteride and should be discussed with a healthcare professional.

Mechanism of Action

Targeting the Dual 5alpha-Reductase Enzyme

Dutaprost acts as a specific and irreversible inhibitor of both the Type 1 and Type 2 isoforms of the 5alpha-reductase enzyme. This molecular action directly targets the metabolic process responsible for generating the active androgen, Dihydrotestosterone (DHT), thereby reducing the key hormonal signal for cell proliferation in sensitive tissues.

Modulating Androgen Growth Signaling and Tissue Volume

The profound and sustained suppression of DHT is the central physiological consequence of the enzymatic inhibition. This diminution of the primary growth stimulus fundamentally alters the tissue's cellular balance, leading to a decrease in cell proliferation and an increase in apoptosis (programmed cell death), which results in the progressive reduction of the target organ's physical volume.

Dosage and Administration Information

How to Use Dutaprost

Dutaprost, which contains the active ingredient Dutasteride, is administered via the oral route as a soft gelatin capsule. The standard daily regimen for the management of Benign Prostatic Hyperplasia (BPH) is 0.5 mg taken once daily. This consistent, long-term frequency pattern is established for both monotherapy and when the drug is used in a fixed-dose combination with tamsulosin.


Administration and Timing Protocols

The soft capsule must be swallowed whole with liquid and must not be chewed, opened, or crushed, as this ensures the proper administration of the medicine. The required timing in relation to food depends on the specific formulation being used:

  • Monotherapy: May be taken with or without food.
  • Combination Therapy (with tamsulosin): Should be taken approximately 30 minutes after the same meal each day to maintain consistent daily timing.

If a dose is missed, patients should continue their scheduled regimen by taking the next dose on the following day; an extra capsule should not be taken to compensate for the missed dose.


Population-Specific Use and Handling

It is generally observed in clinical guidelines that no dosage adjustment is necessary for older adults (geriatric patients) or those with renal impairment. However, caution is advised in cases of mild to moderate hepatic impairment, and no specific dosage recommendation is available for severe hepatic impairment due to a lack of data. A special procedural condition is that individuals must not donate blood for a period of 6 months following the last dose of Dutaprost.

Recent Clinical Evidence

Dutaprost: Recent Clinical Evidence

Research to date for Dutaprost (Dutasteride) is largely derived from official research findings, including large, controlled studies and subsequent expert reviews. This overview focuses only on the types of research conducted, the outcomes measured, and where evidence gaps exist.


Evidence for Use in Symptomatic Prostate Enlargement (BPH)

Research for the indication of Benign Prostatic Hyperplasia (BPH) is based on a substantial body of evidence, primarily large-scale, multi-national Randomized Controlled Trials (RCTs). Researchers in the studies monitored several key outcomes, including measurements of changes in patient-reported outcomes related to physical discomfort, functional measures like urine flow ( Q max), and measured prostate gland volume shifts. Evidence suggests consistency across the primary outcomes examined, leading to the designation of a High evidence level.

Evidence for Use in Progressive Male Pattern Hair Loss

Research concerning Progressive Male Pattern Hair Loss (Androgenetic Alopecia) is comprised of Randomized, Double-blind, Placebo-controlled Trials and controlled Comparative Studies. This evidence contributes to the broader evidence landscape and is designated a Moderate level of certainty. Studies included adult men and evaluated outcomes such as total hair count and hair thickness. Findings were consistent across multiple trials for the outcomes measured, but the follow-up durations were generally short (e.g., 6 months).

Long-Term Research and Evidence Limitations

The evidence base includes intermediate and long-term follow-up data, particularly for BPH, where extension studies tracked outcomes for up to four years. However, long-term outcomes are not well characterized beyond these controlled settings. A primary research limitation is the lack of extensive, direct comparative evidence when measuring Dutaprost head-to-head against every alternative first-line pharmaceutical option. Data for certain specific populations, such as those with significant comorbidities or women with androgenetic alopecia, remain insufficient for widespread conclusions.

Key Studies & References Clinical pharmacokinetics of dutasteride (Review)

Frequently Asked Questions (FAQ)

Common questions about Dutaprost (FAQ)


Q: What is the main medical condition Dutaprost is officially used to manage?

A: Official product information indicates that Dutaprost is primarily used to manage symptoms of benign prostatic hyperplasia (BPH) in men who have an enlarged prostate gland. The treatment is also intended to help lower the risk of developing acute urinary retention (AUR) and reduce the need for BPH-related surgery. This means the drug addresses both symptom relief and disease progression.


Q: Does Dutaprost help with the risk of acute urinary retention?

A: Regulatory documents confirm that Dutaprost is indicated for the symptomatic treatment of BPH and is used to help reduce the risk of acute urinary retention (AUR). By helping to reduce prostate size, the drug is indicated to help reduce the risks associated with this complication.


Q: Is Dutaprost a long-term treatment for the conditions it manages?

A: Yes, official documentation indicates that Dutaprost is generally intended for long-term use to manage the underlying condition. Clinical studies and official information confirm that the therapeutic benefits, such as prostate size reduction, continue to be demonstrated with continuous use for up to four years.


Q: What are the key benefits a patient can generally expect from using Dutaprost?

A: Official research indicates benefits related to an overall improvement in lower urinary tract symptoms, such as improved bladder emptying. Additionally, the drug works to reduce the size and volume of the prostate gland itself over a period of time, which can lead to an increased urine flow rate.


Q: Why is Dutaprost sometimes used in combination with other medicines?

A: Official product information confirms that Dutaprost is approved to be used in a fixed-dose combination with an alpha-blocker, such as tamsulosin. This approach is intended to use two different mechanisms: Dutaprost shrinks the prostate, while the alpha-blocker relaxes muscles to immediately improve urine flow.


Q: Does Dutaprost control symptoms or cure the underlying condition?

A: According to regulatory documents, Dutaprost is classified as a medicine for the management (treatment) of BPH symptoms, rather than a cure for the underlying condition. It works to modify disease progression by shrinking the prostate gland.


Q: Is Dutaprost known by any other brand names in different regions?

A: The active ingredient in Dutaprost is Dutasteride. One of the most common international brand names associated with this compound is Avodart®.


Q: What is the general difference between Dutaprost and similar medicines like Finasteride? (High-level only)

A: Dutaprost's active ingredient, Dutasteride, is described in official sources as a dual inhibitor, meaning it blocks both Type 1 and Type 2 forms of the 5alpha-reductase enzyme. This is a key distinction, as similar medicines like Finasteride are generally noted as primarily inhibiting only the Type 2 form.


Q: Has research focused on the long-term effectiveness of Dutaprost?

A: Official documentation includes clinical evidence from Randomized Controlled Trials (RCTs) and long-term open-label extension studies. These studies have followed patients and tracked the effectiveness of Dutaprost for periods of up to four years.


Q: Is there clinical data on the percentage of prostate size reduction seen with Dutaprost?

A: Official clinical data indicates that the use of Dutaprost typically results in a progressive reduction in the physical volume of the prostate gland. This reduction is generally reported in the range of 15% to 25% over the first year of treatment.


Q: How does the mechanism of Dutaprost differ from alpha-blockers used for the same condition?

A: The two types of medicine work differently: Dutaprost is a dual 5alpha-reductase inhibitor that works by shrinking the enlarged prostate gland through hormone suppression. Conversely, alpha-blockers (such as tamsulosin) work by relaxing the muscles around the bladder neck and prostate, which helps to improve urine flow.


Q: Are there different versions or strengths of the Dutaprost medication?

A: Official documentation states that Dutaprost is available as an oral soft gelatin capsule containing the active ingredient, Dutasteride. No other strengths or dosage forms for the single-ingredient product are officially approved by regulatory bodies.


Q: What types of studies are available that discuss the use of Dutaprost?

A: Regulatory sources indicate that the evidence base for Dutaprost includes large-scale, multi-national Randomized Controlled Trials (RCTs). Research for the various indications has also included long-term extension studies and controlled comparative studies.


Q: What is the official regulatory approval status of Dutaprost for its primary condition?

A: Dutaprost's active ingredient, Dutasteride, has been approved by major regulatory bodies, including the U.S. FDA, for its primary indication: the treatment of symptomatic benign prostatic hyperplasia (BPH).


Q: Are there known side effects that may persist after a person stops using Dutaprost?

A: Official documents note that sexual side effects are generally expected to be reversible once the medication is stopped. However, regulatory warnings acknowledge rare, post-marketing reports of sexual dysfunction, such as decreased libido and erectile dysfunction, that have been noted to persist after stopping the drug.


Q: Does Dutaprost have any known effects on mood or emotional well-being?

A: Official product information includes a warning regarding the potential for mood-related changes. If symptoms of depression or suicidal thoughts occur, regulatory documents state these should be discussed with a healthcare provider.


Q: What are the potential effects of Dutaprost on fertility or semen parameters?

A: Official regulatory documents indicate that Dutaprost may affect semen characteristics. Reported changes include a reduction in sperm count, semen volume, and sperm motility. Based on these findings, regulatory information notes that the possibility of reduced male fertility cannot be excluded.


Q: Is there any known association between Dutaprost and the risk of prostate cancer?

A: Official warnings state that while the drug is associated with a lower overall risk of prostate cancer, clinical studies also showed a small increase in the risk of high-grade (more serious) prostate tumors in men taking the drug. This specific risk is included in the regulatory documentation.


Q: Does Dutaprost use require any special monitoring by a healthcare professional?

A: Yes, the use of Dutaprost requires special monitoring of Prostate-Specific Antigen (PSA) levels. Official guidance advises that a new PSA baseline should be established approximately six months after starting treatment. Regular monitoring of PSA levels is recommended thereafter for accurate interpretation.


Q: Does the time of day a person takes Dutaprost matter?

A: The required timing depends on how the medicine is taken. If Dutaprost is taken alone (monotherapy), regulatory documents state it can be taken with or without food. However, if taken as a combination product with tamsulosin, it should be taken approximately 30 minutes after the same meal each day to maintain consistency.


Q: Are there any specific non-prescription or herbal supplements that may interact with Dutaprost?

A: Dutaprost is processed in the liver by specific enzymes (CYP3A4/3A5). Due to this metabolic pathway, some herbal products or non-prescription supplements may potentially affect the level of Dutasteride in the bloodstream. Regulatory guidance highlights that individuals should disclose all supplements and non-prescription medicines to their healthcare provider.


Q: Can Dutaprost be taken alongside common blood pressure medications?

A: Official drug interaction information notes that some calcium channel blockers, which are used to manage blood pressure, may affect how the body processes Dutaprost. For specific medicines in this class, such as Verapamil and Diltiazem, caution is officially advised due to the potential for increased Dutasteride concentrations in the blood.


Q: Is there a known interaction between Dutaprost and grapefruit juice?

A: Grapefruit juice is noted in regulatory warnings because it can interfere with the liver enzymes responsible for metabolizing the medicine. Consumption of grapefruit juice may potentially increase the concentration of Dutaprost in the blood, which could increase the risk of experiencing side effects.


Q: What general precautions are noted regarding taking Dutaprost with other medications?

A: Official documentation states that patients need to inform their healthcare provider of all prescription and non-prescription medicines, herbal products, and supplements being used. This general precaution is advised because the active ingredient is primarily metabolized by liver enzymes.


Q: How long does it usually take to start noticing the effects of Dutaprost?

A: Official information indicates that Dutaprost creates a progressive change in the prostate gland over time. Because of this mechanism, it may take approximately three to six months before symptomatic benefits are noticed. The full clinical effect may take up to a year to be fully realized.


Q: Is it normal to not feel an immediate effect when starting Dutaprost?

A: Yes, it is considered normal not to experience an immediate effect when beginning use of this medicine. Regulatory information explains that Dutaprost works by creating a progressive reduction in the prostate gland's volume. This process occurs slowly over a period of many months.


Q: How long after stopping Dutaprost does the active ingredient remain in the body?

A: According to official pharmacokinetic data, the active ingredient has a long terminal elimination half-life of approximately five weeks. Detectable levels of the medicine may remain in the bloodstream for up to four to six months after a person has stopped taking the last dose.


Q: Can symptoms return after discontinuing the use of Dutaprost?

A: Official clinical data suggests that when Dutaprost treatment is stopped, the symptoms of the condition can return. The cessation of the hormonal suppression leads to the regrowth of the prostate gland and a deterioration of lower urinary tract symptoms (LUTS).


Q: Is it true that the full benefits of Dutaprost may take six months or longer?

A: Yes, studies indicate that it can take a prolonged period of continuous use to achieve the full therapeutic benefits. Patients may need to take the medicine for at least six months, and potentially up to 12 months, before the maximal effects are realized.


Q: What is the concept of 'steady-state concentration' for a drug like Dutaprost?

A: Steady-state concentration refers to the stable level of the drug that is consistently maintained in the bloodstream. Because Dutaprost has a long half-life, official pharmacokinetic data indicates that the stable steady-state concentration is typically reached after approximately six months of taking the daily dose.


Q: Are the effects of Dutaprost on the prostate permanent after stopping treatment?

A: No, the effects on the prostate are not considered permanent after stopping the medicine. Official data indicates that when the medicine is discontinued, the suppression of the growth-stimulating hormone ceases. This action leads to the regrowth of the prostate gland and the eventual return of the condition's symptoms.

How should Dutaprost be stored and disposed of?

Official Storage and Disposal Requirements

Official regulatory documents define specific, mandatory conditions for storing and handling Dutaprost capsules to maintain stability and ensure safety.

Aspect Requirement as per Labeling
Temperature Store at room temperature, not exceeding 30 C, and keep from freezing or excess heat.
Protection Keep the product away from moisture and direct light.
Packaging Keep the medicine in its original container, which must be tightly closed.
Child Safety Must be stored out of the sight and reach of children.
Handling Safety Pregnant women must not handle the capsules, as the contents can be absorbed through the skin. If accidental contact occurs, the area must be washed immediately with soap and water.
Disposal Discard all unused or expired product according to local regulations, such as drug take-back programs. Do not keep outdated or leaking capsules.

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

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