Finasteride
Finasteride

0.39
Finasteride is an oral medication prescribed for men to treat male pattern hair loss and manage symptoms of an enlarged prostate.


Ingredient
Category
Availability
In Stock
Delivery
Airmail (14-21 days) | EMS trackable (5-9 days)
Product is shipped in a fully discreet envelope with no content disclosure, including all required documentation inside

Product Sheet

Active Ingredient(s)
Finasteride
Reference Brand
Propecia
Product Origin
Generic Product
Reference Manufacturer
Merck
Product Form
Tablet
Regulatory Classification
Rx
Primary Category
Men's Health
Product Category
5-alpha reductase inhibitor
Pharmacological Class
Steroid 5-alpha reductase inhibitor
Clinical Indications
Male pattern hair loss, Enlarged prostate
Manufacturer Description
Finasteride is an oral medication prescribed for men to treat male pattern hair loss and manage symptoms of an enlarged prostate.
Mechanism of Action
Finasteride inhibits the 5-alpha reductase enzyme, reducing the conversion of testosterone to dihydrotestosterone (DHT) to slow hair loss and shrink the prostate.
Route of Administration
Oral
Onset Time
3–6 months for hair results
Duration
24 hours
Contraindications
Pregnancy (contraindicated for women)
Severe Adverse Events
Depression, Breast tenderness
Common Side Effects
Decreased libido
Uncommon Side Effects
Erectile dysfunction
Drug Interactions
None major documented
Pregnancy Safety Warnings
Do not handle if pregnant.
Age Restrictions
Adult males only.
Storage Guidelines
Store at room temperature.
Related Products
Dutasteride, Minoxidil

Finasteride FAQ

Can finasteride affect sexual performance permanently?

Finasteride can cause temporary changes in libido, erectile function, or ejaculation, most of which resolve after discontinuation. Persistent sexual side effects are rare, but patients experiencing lasting issues should discuss them with a healthcare professional.

Will finasteride lower my PSA test results, and how should I interpret them?

Yes, finasteride typically reduces PSA by about 50 %. Doctors will adjust the PSA reading by doubling the measured value (or using a correction factor) to obtain a more accurate assessment of prostate health while on the medication.

Is it safe to take finasteride while using other hair-loss treatments like minoxidil?

Finasteride and topical minoxidil work via different mechanisms and are often combined safely. However, patients should verify with their prescriber that both products are appropriate for their specific condition.

What should I do if I miss a dose while traveling across time zones?

Take the missed dose as soon as you remember, then continue with the regular once-daily schedule. Avoid taking two doses close together; choose a consistent time that fits your new routine.

Do I need to avoid blood donation while on finasteride?

Finasteride does not disqualify you from donating blood in Hong Kong, but you should inform the donation centre of any medications you are taking.

Can finasteride be used to treat hair loss in women?

Finasteride is not approved for women because of the risk of birth-defects if a female patient becomes pregnant. Some clinicians prescribe it off-label for severe hirsutism, but this is done only under strict medical supervision.

How long does it take to see visible hair growth after starting finasteride?

Most men notice a reduction in hair loss within the first three months, while measurable regrowth often appears after 6-12 months of consistent use.

Are there any dietary supplements that interfere with finasteride?

There are no known food interactions, but supplements that affect hormone levels (e.g., high-dose zinc, saw-palmetto) could theoretically alter finasteride’s effectiveness. Discuss all supplements with your pharmacist.

What is the difference between finasteride 1 mg and the 5 mg formulation?

The 1 mg dose is approved for treating male-pattern hair loss, while the 5 mg dose is used for benign prostatic hyperplasia. Both contain the same active ingredient but are prescribed for different conditions and have distinct dosing guidelines.

Can I store finasteride in a bathroom cabinet?

Yes, as long as the cabinet remains cool, dry, and out of direct sunlight. Avoid storing the medication in humid environments like shower areas to preserve tablet integrity.

What is Finasteride?

Modulating endocrine signals within the body, finasteride functions as a 5-alpha-reductase inhibitor. By limiting the conversion of testosterone into dihydrotestosterone (DHT), this active compound addresses conditions linked to an accumulation of that specific androgen. It is recognized as the foundational active ingredient in various formulations, including those marketed under names such as Propecia and Proscar.

Within the clinical landscape of Hong Kong, this ingredient is primarily utilized to manage symptomatic benign prostatic hyperplasia and male pattern hair loss. While diverse brands exist, the pharmacological core remains consistent across both generic versions and proprietary medications. Understanding that the API provides the underlying therapeutic weight helps individuals differentiate between various available product options.

Formulations and Physical Delivery

Finasteride is most commonly manufactured as oral tablets, which vary in strength depending on the intended clinical target. In Hong Kong, patients may encounter both branded options and generic formulations, which undergo equivalent quality standards set by health authorities. While the physical look or the excipients-the inactive ingredients used to hold the tablet together-might differ between manufacturers, the functional impact of the API remains consistent. Proper identification is based on the dosage listed on the packaging rather than the external branding of a specific medication.

Therapeutic Applications

This compound is directed at a limited range of conditions primarily affecting adult males. Its applications include:

  • Addressing the symptoms of an enlarged prostate to improve urinary flow and reduce obstructive sensations.
  • Assisted maintenance of scalp hair density in individuals experiencing androgenic alopecia.
  • Mitigating the progression of hair line recession and thinning in specific patterns.

Pharmacologically, the ingredient is applied when the suppression of tissue-specific DHT production is determined to be the desired clinical outcome.

Biological Action

The body naturally produces the enzyme 5-alpha-reductase, which converts testosterone into a more potent androgen known as DHT. When finasteride is ingested, it occupies the active sites of this enzyme, effectively blocking the downstream production of this specific hormone. By lowering systemic or localized levels of DHT, the substance reduces the physiological stimulus that typically encourages prostate overgrowth or the shrinkage of hair follicles. This shift in hormonal regulation is why the effects are typically observed only as long as the compound remains present in the individual's system.

Safety Profile

Common Reactions

Some individuals may encounter mild adjustments during early treatment stages, such as temporary shifts in libido or localized skin sensitivity in rare instances. These occurrences are often transient as the body adapts to lower levels of the targeted metabolite.

Serious Reactions

Immediate clinical assessment is warranted if an individual experiences signs of hypersensitivity, such as swelling of the lips, face, or tongue, or if unexplained persistent psychological changes occur. Unusual breast tenderness or tissue enlargement should also be monitored and discussed with a qualified professional.

Contraindications

This compound is not intended for use by women, particularly those who are pregnant or may become pregnant, due to the risk of abnormal development in a male fetus. Individuals with a known history of severe hypersensitivity to this chemical class must avoid exposure, and those with significant liver impairment should approach its use with additional caution regarding metabolic clearance.

Interaction Awareness

While finasteride does not frequently engage in complex interactions with the many common medications found in a typical household, it is essential to consider the impact of other hormonal supplements or androgen-modulating agents. Refer directly to the patient information leaflet provided with your specific medication for a categorized list of potential interactions relevant to your formulation.

Usage Context and Considerations

Treatment with this ingredient is generally considered a long-term commitment, particularly in cases involving hair density, as the effects are reversible upon cessation. Proper storage in a controlled, room-temperature environment away from direct light is necessary to maintain the integrity of the chemical structure. For detailed usage, dosing, and administration, refer to the specific medication's clinical information.

Glossary

Pharmacology
The branch of science concerned with the study of drug action and the interaction of chemical substances with living systems.
Dihydrotestosterone
A naturally occurring metabolite of testosterone that, when present in elevated concentrations in certain tissues, can contribute to hair follicle miniaturization or prostate enlargement.
Excipient
An inactive substance that serves as the vehicle or medium for a drug, allowing for the creation of stable tablets or topicals.

Safety Notice

This overview provides educational information regarding finasteride and should not be interpreted as professional medical advice. Individual medications vary significantly in their strength, intended formulation, and specific usage instructions based on local Hong Kong standards. The author and publisher disclaim all liability for clinical applications. Patients are urged to refer to their specific medication packaging and consult a licensed healthcare professional to determine if this compound is appropriate for their unique health status.

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