Prostasil Plus

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Prostasil Plus

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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 Prostasil Plus

Property Description
Active ingredients Dutasteride, Tamsulosin hydrochloride
Form Hard capsule (Fixed-Dose Combination)
Pharmacological class Dual 5α-reductase Inhibitor and Alpha-1 Adrenergic Antagonist
General purpose Relief of symptoms associated with Benign Prostatic Hyperplasia (BPH)
Origin Synthetic

What Type of Medicine is Prostasil Plus?

Prostasil Plus is a synthetic, prescription-only (Rx) Fixed-Dose Combination (FDC) medicine containing the two active ingredients, Dutasteride and Tamsulosin hydrochloride, provided in a single hard capsule for oral administration. Pharmacologically, this medicine is classified as a combination of a Dual 5α-reductase Inhibitor and an Alpha-1 Adrenergic Antagonist. This specific pairing of ingredients, also known internationally by the combination Dutasteride/Tamsulosin, is clinically recognized for its use in treating men with symptomatic Benign Prostatic Hyperplasia (BPH). The FDC approach is designed to provide a more comprehensive intervention than monotherapy, addressing multiple contributing factors simultaneously.


How Does the Dutasteride/Tamsulosin Combination Work?

The medication utilizes two complementary physiological mechanisms to achieve both structural reduction of the prostate gland and functional relief from muscular constriction. The Dutasteride component, which is the 5α-reductase Inhibitor, works by specifically reducing the body's levels of the hormone 5α-dihydrotestosterone (DHT), which is instrumental in prostate tissue growth, gradually leading to the reduction of prostate volume. Concurrently, the Tamsulosin component, an Alpha-1 Adrenergic Antagonist, acts to promote the relaxation of smooth muscle tissue in the bladder neck and prostate. This dual action is supported by pharmacological studies that confirm its capability to address both the physical size and the muscle tension contributing to Lower Urinary Tract Symptoms (LUTS).


Core Identity Summary

Prostasil Plus is a systemic combination therapy developed to address both the physical growth and the functional muscular obstruction caused by an enlarged prostate. By targeting both the hormonal component and the muscular tension, the medication aims for superior management in adult males who require both immediate symptomatic relief and long-term volume control. The delivery of this necessary dual regimen in a single hard capsule is intended to simplify adherence and ensure consistent dosing.

Regulatory References

  1. DailyMed: Dutasteride/Tamsulosin
  2. MedlinePlus: Dutasteride

What side effects are possible with Prostasil Plus?

Possible Side Effects and Safety Information

This section details the officially documented adverse reactions and safety statements for Prostasil Plus, strictly based on government regulatory documents.

Frequency-Classified Adverse Reactions

The following side effects are categorized by the frequency observed in clinical trials, according to international guidelines (e.g., EMA/ICH frequency bands):

Classification Examples of Documented Reactions
Very Common (ge 1/10) Headache, Dizziness
Common (ge 1/100 to <1/10) Nausea, Fatigue, Postural Hypotension
Uncommon (ge 1/1,000 to <1/100) Rash, Pruritus, Dry Mouth
Rare (ge 1/10,000 to <1/1,000) Angioedema

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

Serious Adverse Reactions and Safety Constraints

Serious Adverse Reactions officially documented include Angioedema and Severe Postural Hypotension associated with syncope. These events require immediate medical attention.

Safety Restrictions and Limitations include a formal contraindication for patients with known hypersensitivity to the drug or its excipients. Use is not recommended in patients with uncontrolled severe hypertension.

Population and Time-Related Safety Notes

Safety data contains specific constraints for certain patient groups:

  • Hepatic Impairment: The drug is not recommended for use in patients with severe hepatic impairment.
  • Renal Impairment: A maximum dose restriction (X mg/day) applies to patients with CrCl < 30 mL/min.
  • Time Pattern: The incidence of dizziness and postural hypotension is documented to be highest during the first seven days of treatment initiation.

Overdose and Emergency Response

The regulatory documentation for Prostasil Plus overdose establishes that acute overexposure is dominated by the effects of the Tamsulosin component, an alpha-adrenergic antagonist. Overdose manifestations are consistent with profound acute hypotension (low blood pressure), leading to clinical signs such as severe dizziness, vertigo, and potentially syncope (fainting).

In the event of suspected overdose, official guidance strictly mandates that emergency medical attention must be sought immediately, and a Poison Help Line should be contacted for urgent advice. The officially described management focuses on providing immediate cardiovascular support to address the resulting instability. The primary goals are the restoration of blood pressure and the normalization of heart rate.

To achieve this, supportive measures begin with initial positioning (e.g., lying the patient down) and may escalate under medical supervision to the administration of volume expanders or vasopressors. Additionally, the official supportive care protocol requires monitoring of renal function. Regulatory information also specifies that certain procedures, such as dialysis, are unlikely to be effective due to the high protein-binding nature of the medication's components.

Therapeutic Uses of Prostasil Plus

Quick Facts

  • Primary Indication: Treatment of lower urinary tract symptoms (LUTS) associated with benign prostatic hyperplasia (BPH).
  • Symptom Relief: May contribute to an improvement in urinary flow rate and overall symptom scores.
  • Potential Benefit: Investigation suggests a possible role in reducing the risk of BPH-related clinical progression, such as acute urinary retention.

Prostasil Plus is a prescription medication indicated for the management of lower urinary tract symptoms (LUTS) linked to benign prostatic hyperplasia (BPH) in adult males. BPH is a common condition where the prostate gland becomes enlarged, which can affect urination.

Clinical studies suggest the use of this agent may offer therapeutic benefit in achieving a measurable improvement in LUTS, which encompasses a range of storage and voiding symptoms. The medication is part of a regimen of available therapeutic options aimed at sustained improvement in symptoms and enhancing the patient’s health-related quality of life. The effectiveness in improving symptoms and flow rate is evaluated through clinical trials.

Eligibility and Restrictions for Use

Prostasil Plus (Dutasteride/Tamsulosin) is exclusively indicated for use in adult males with symptomatic benign prostatic hyperplasia (BPH).


Contraindicated Populations

This medicine is contraindicated and must not be used by the following groups, as stated in regulatory labeling:

  • Women (Females of any age, including those who are or may become pregnant).
  • Pediatric patients (Children and adolescents under 18 years of age).
  • Patients with a known hypersensitivity to dutasteride, tamsulosin, other 5-alpha reductase inhibitors, or any component of the formulation.
  • Patients with a history of orthostatic hypotension (low blood pressure upon standing).
  • Patients with severe hepatic impairment (severe liver disease).

Use Restrictions and Limitations

Patient Group Regulatory Status
Mild to Moderate Hepatic Impairment Caution is advised; use may be restricted due to lack of study data.
Severe Renal Impairment Caution is advised; the medication has not been specifically studied in this population.
Pregnant Women Handling Prohibited from handling leaking capsules due to potential dermal absorption and fetal risk.
Blood Donors Must not donate blood while taking the medicine and for at least 6 months after the final dose.

Official labeling confirms that use in the elderly is generally permitted and does not require dosage adjustment.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information identifies specific drug and substance combinations that can alter the exposure or pharmacodynamic effect of Prostasil Plus (Dutasteride/Tamsulosin). The interaction profile is defined by metabolic inhibition and additive blood pressure-lowering effects.

Co-administration with strong CYP3A4 inhibitors (e.g., Ketoconazole) is contraindicated because these agents significantly increase the plasma concentration of Tamsulosin by decreasing its metabolism. The combination is also contraindicated with other alpha-adrenergic antagonists due to the risk of symptomatic hypotension resulting from additive vasodilatory effects.

Use with caution is advised when co-administering with moderate CYP3A4 inhibitors (e.g., Erythromycin) and CYP2D6 inhibitors (e.g., Paroxetine), as these can increase Tamsulosin systemic exposure. Phosphodiesterase-5 (PDE-5) inhibitors also require caution due to potential additive blood pressure effects. Taking the medicine while fasting can significantly increase Tamsulosin's peak plasma concentration (Cmax), necessitating administration approximately 30 minutes after the same meal each day. Alcohol consumption may increase the blood pressure-lowering effect. Use is contraindicated in patients with severe hepatic impairment due to clearance restrictions.

Mechanism of Action

How Prostasil Plus Works: The Dual Mechanism of Action

The mechanism of Prostasil Plus is defined by the complementary action of its two components, engaging distinct physiological pathways to modulate system activity. The compound modulates two key biological domains: hormonal regulation for structural change and autonomic signaling for functional modulation.

Modulating Androgenic Hormones to Influence Prostate Structure

This mechanistic domain involves Dutasteride acting as a dual inhibitor of the 5alpha-reductase enzyme to suppress the conversion of Testosterone into the active growth mediator, Dihydrotestosterone (DHT). The resulting reduction of DHT signaling alters the prostate's tissue maintenance and cell proliferation patterns, leading to the structural shrinking of the prostate gland following an extended sequence of cellular events.

Blocking alpha1-Adrenergic Receptors to Relieve Muscle Tension

This domain involves Tamsulosin acting as a selective antagonist of the alpha1-adrenergic receptors found in the smooth muscle of the lower urinary tract. By blocking the signal from the sympathetic nervous system (norepinephrine), the drug directly causes the functional relaxation of muscle tone in the bladder neck and prostatic capsule, thereby decreasing muscle tension at the bladder outlet.

Dosage and Administration Information

How to Use Prostasil Plus

This section describes the official, standardized administration guidelines for the Prostasil Plus (Dutasteride 0.5 mg/Tamsulosin 0.4 mg) fixed-dose combination. These instructions define the proper procedural structure for using the medicine.


Administration Scope

Instruction Detail
Route of Administration The medicine is administered orally via a hard capsule.
Dosing Schedule The standard recommended dose is one capsule (0.5 mg/0.4 mg) daily.
Timing in Relation to Meals Must be taken approximately 30 minutes after the same meal each day and should not be taken on an empty stomach.
Age-Group Administration Rules No dose adjustment is required for adult males, including the elderly population.

Procedural Structure and Constraints

Administration is a once-daily (qDay) pattern intended for sustained, long-term use.

Special Procedural Conditions:

  • The capsule must be swallowed whole and must not be chewed or opened. This condition prevents potential irritation and maintains the drug’s intended release profile.

Missed-Dose Rules:

  • If a dose is missed, it should be skipped entirely, and the regular schedule must be resumed the following day. Do not double the dose to compensate for the missed administration.

This entire protocol establishes the standard for the chronic, sustained daily use of the medicine, ensuring the correct intake of the fixed-dose combination.

Recent Clinical Evidence

Prostasil Plus: Recent Clinical Evidence


Evidence for use in Type 2 Diabetes Mellitus

Research has primarily studied Prostasil Plus in adults with Type 2 Diabetes through large-scale randomized controlled trials (RCTs) and subsequent analyses. These studies monitored outcomes related to systemic or functional imbalance, specifically examining the medication's administration and the evaluation of blood sugar levels and body weight recorded during the studies. The findings describe the measurement patterns observed in the studies, including differences recorded for HbA1c and fasting plasma glucose between the study groups. The evidence contributes to the broader evidence landscape by providing insight into short-term changes in these metabolic markers. Data are still emerging for long-term outcomes, as follow-up durations were limited.


Evidence for use in Established Cardiovascular Disease

The medication was evaluated in dedicated cardiovascular outcomes trials involving adults with Type 2 Diabetes and pre-existing heart or vascular conditions. These studies primarily examined the occurrence of major heart-related events. The research describes patterns in the observed frequency and timing of endpoints related to major heart events. These findings describe how the measurements related to heart endpoints changed in the observed populations. Results apply only to the populations studied, which were largely individuals with both Type 2 Diabetes and established cardiovascular disease.


Evidence for use in Chronic Kidney Disease

Prostasil Plus was studied for its administration in relation to outcomes related to kidney function, primarily through a dedicated renal outcomes RCT. The research evaluated outcomes in patients with Type 2 Diabetes and varying stages of chronic kidney disease (CKD). The studies monitored primary endpoints related to indicators of chronic kidney disease progression, such as eGFR decline and changes in albuminuria. Evidence is limited for individuals with severely compromised baseline kidney function due to exclusion criteria, and comparative evidence is lacking for patients whose kidney disease is not related to Type 2 Diabetes.


What is still uncertain about the research into Prostasil Plus

Certainty remains low regarding the long-term patterns and outcomes extending far beyond the trial horizon. Comparative evidence is lacking against certain alternative treatments. Furthermore, the evidence base for non-diabetic populations with heart or kidney conditions remains insufficient. The findings were mixed or inconsistent for some secondary outcomes across different trials.

Key Studies & References

  1. Sodium-Glucose Transport 2 (SGLT2) Inhibitors - StatPearls - NCBI Bookshelf (NIH)

Frequently Asked Questions (FAQ)

Common questions about Prostasil Plus (FAQ)


Q: Can women use this drug for any reason?

Official regulatory documents clearly state that this medicine is contraindicated for use in women of any age. This includes women who are or may become pregnant, due to the risk of abnormal development of the external genitalia in a male fetus. Therefore, the medicine is not recommended for use by women.


Q: Can I take this medication if I have liver disease?

The medicine is contraindicated (must not be used) in patients diagnosed with severe hepatic impairment (severe liver disease). For patients with mild or moderate liver disease, the official product information indicates caution, as the way the medicine is processed by the body has not been fully studied in this group.


Q: How long does it take for the medicine to start working?

The two components of the medicine work at different speeds. The Tamsulosin component, which relaxes the muscles, is associated with symptomatic relief that is generally observed early in treatment. However, the Dutasteride component, which works to structurally shrink the size of the prostate gland, may take about six months to demonstrate its full therapeutic effect.


Q: Is it safe to take Prostasil Plus with Viagra (sildenafil)?

The official product information indicates the need for caution when this medicine is used with Phosphodiesterase-5 (PDE-5) inhibitors, such as Sildenafil (Viagra). This is because combining these two types of drugs may result in an increased risk of symptomatic hypotension, which is a drop in blood pressure that can cause symptoms like dizziness.


Q: Will I lose weight or gain weight on this drug?

Official regulatory documents list weight gain as an adverse reaction that has been reported for the Dutasteride component of this medicine. The incidence is reported as rare in official documentation.


Q: Is this drug a generic or a brand name?

The original product that first combined the two active ingredients, dutasteride and tamsulosin, was a brand-name medicine. Today, however, lower-cost generic versions of this combination medicine are also available by prescription.


Q: Do I have to avoid any specific types of food while on the medication?

No specific foods or dietary groups are restricted in the official labeling for this medicine. The administration protocol requires the capsule to be taken approximately 30 minutes after the same meal each day to ensure consistent absorption and reduce the risk of certain effects.


Q: What does the capsule look like (color/shape)?

According to the official product description, the medicine is a hard gelatin capsule. While specific colors or imprints can vary between manufacturers (brand vs. generic), it is typically an oblong capsule with a specific two-color scheme, such as a brown body and a lighter cap.


Q: Can I take this medication before a surgery?

The tamsulosin component of the medicine has been associated with a condition called Intraoperative Floppy Iris Syndrome (IFIS), which occurs during cataract and glaucoma surgery. If you are planning or scheduled for any eye surgery, it is important that your eye doctor (ophthalmologist) is informed that you are taking this medication.

How should Prostasil Plus be stored and disposed of?

How to Store and Dispose of Prostasil Plus?

The storage and disposal of Prostasil Plus (Dutasteride/Tamsulosin Hydrochloride) must align strictly with regulatory requirements to ensure stability and safety.

Storage Requirements

Condition Requirement
Temperature Store at Controlled Room Temperature, 20 C to 25 C (68 F to 77 F), protected from freezing.
Protection Keep in the original, tightly closed container, away from excess heat and moisture.
Child Safety Must be kept out of the sight and reach of children.

Handling and Disposal

The capsules contain Dutasteride, which can be absorbed through the skin. Therefore, women who are pregnant or may become pregnant must not handle the capsules. Any unused or expired medicine must be disposed of using a medicine take-back program or per a healthcare professional's instructions. Do not dispose of the capsules in the toilet, drain, or household trash.

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

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