Proscar (Finasteride)

Name: Proscar
Brand: Organon
SKU: 1916
Availability: InStock

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Proscar

Manufacturer: Organon

Country: Canada

Dosage: 5 mg

Qty-Price (USD):

Type:

Product: Proscar Tablet (ON BACKORDER)

Manufacturer: Merck

Country: Turkey

Dosage: 5 mg

Qty-Price (USD):

Generic Equivalent of Proscar

Type

Product

Manufacturer

Country

Dosage

Qty-Price (USD)

Type:

Product: Finasteride

Manufacturer: Generic

Country: United Kingdom

Dosage: 5 mg

Qty-Price (USD):

Type:

Product: Finasteride Tablet

Manufacturer: Generic

Country: Canada

Dosage: 5 mg

Qty-Price (USD):

Proscar Information

medically reviewed by Dr. HaVy Ngo, Pharmacist on July 18, 2025.

Proscar and Finasteride at CanadaPharmacyOnline.com

Proscar (finasteride) is a brand name available in Canada, manufactured by Organon. It is also available from Turkey, manufactured by Merck.

Generic finasteride is sourced from manufacturers that meet applicable regulatory standards. The specific manufacturer of your dispensed medication may vary.

Important Information about Generic Finasteride:

Generic finasteride contains the same active ingredient as brand-name Proscar and is required to meet the same safety, effectiveness, and quality standards. This means it is designed to work in the same way as Proscar. Studies have demonstrated bioequivalence between generic and brand-name finasteride, meaning they have comparable absorption rates and overall effects. However, individual responses to any medication can vary. Talk to your doctor or pharmacist if you have any questions about using generic finasteride.

For more information about generic drug approval and bioequivalence, please visit Access to Generic Drugs in Canada | Canada.ca.

Dosage

Proscar and generic finasteride are commonly available in 5 mg oral tablets.

Your doctor will determine the appropriate dose based on your individual needs and medical conditions.

Usage

Proscar (finasteride) is a prescription medication used to treat benign prostatic hyperplasia (BPH), also known as an enlarged prostate, in men. BPH is a non-cancerous enlargement of the prostate gland that can cause urinary symptoms such as difficulty urinating, frequent urination, weak stream, and incomplete bladder emptying. Proscar works by shrinking the prostate gland, which helps to improve urinary flow and reduce these symptoms. Proscar, as a stand-alone therapy for symptomatic BPH, has been shown to reduce the risk of acute urinary retention and the need for surgery (e.g., transurethral resection of the prostate and prostatectomy). Proscar can also be administered in combination with the alpha-blocker doxazosin to minimize the risk of symptomatic progression of BPH.

Proscar is not approved for the prevention of prostate cancer. Patients with an enlarged prostate are the appropriate candidates for therapy with Proscar.

Mechanism of Action
Proscar (finasteride) is a 5-alpha reductase inhibitor. It works by blocking the action of an enzyme called 5-alpha reductase, which is responsible for converting testosterone into dihydrotestosterone (DHT). DHT is a potent androgen that plays a key role in the growth of the prostate gland. By reducing the levels of DHT within the prostate, finasteride causes the prostate gland to shrink, thereby alleviating the urinary symptoms associated with BPH.

Take Proscar exactly as your doctor prescribes, following the instructions in the highlights of prescribing information | Organon. Consult your doctor for personalized guidance and safe use.

The information below summarizes some, but not all, potential side effects, risks, and interactions. Before taking Proscar, it is essential to discuss all possible side effects, risks, and interactions with your doctor or pharmacist.

Side Effects

The information below is a partial list of side effects; individual reactions can vary. Before starting Proscar, it is crucial to discuss potential side effects and risks with your doctor or pharmacist.

Common side effects - The following are some common side effects of Proscar; other side effects may also occur. Contact your doctor promptly if any side effects are persistent, worsening, or concerning, or if you experience any other concerning symptoms.
• Breast tenderness or enlargement
• Decreased ejaculatory volume
• Decreased libido (sex drive)
• Erectile dysfunction (impotence)

Serious Side Effects - These are rare but potentially severe side effects. Seek immediate medical attention or call emergency services if you experience any of the following:
• Allergic reactions: Rash, itching, hives, swelling of the face, lips, tongue, or throat, difficulty breathing.
• Breast changes: Lumps, pain, nipple discharge, or other breast abnormalities (can be signs of male breast cancer).
• Depression, including suicidal ideation
• Prostate cancer: While finasteride reduces the overall risk of prostate cancer (particularly low-grade forms), some studies initially suggested an increased diagnosis of high-grade prostate cancer in a small number of men. Long-term follow-up studies suggest this may be due to enhanced detection rather than an actual increase in incidence or mortality. Discuss this risk with your doctor.
• Testicular pain

Long-Term Side Effects - Long-term use of finasteride may be associated with:
• Altered prostate-specific antigen (PSA) levels, which are used for prostate cancer screening. Finasteride lowers PSA levels, so your doctor will need to adjust your PSA readings for accurate interpretation.
• Persistent sexual side effects (e.g., decreased libido, erectile dysfunction, ejaculation disorders, orgasm disorders) that may continue even after discontinuing the medication (sometimes referred to as Post-Finasteride Syndrome).
• Potential for male breast cancer (can occur in short-term or long-term use)

Contraindications

The following is not an exhaustive list of contraindications. Before starting Proscar, it is crucial to discuss all your medical conditions, past and present, and all medications you are taking with your doctor or pharmacist.

Proscar should not be used if you:
• Are allergic to finasteride or any of its ingredients.
• Are a woman who is pregnant or may become pregnant, or if you are breastfeeding. Finasteride can cause birth defects in male babies.

Tell your doctor about all of your medical conditions, past and present, before starting Proscar. This is crucial because certain conditions affect whether Proscar is right for you. These conditions may include, but are not limited to:
• Depression or a history of suicidal thoughts: As finasteride has been linked to low mood.
• Liver disease: Use with caution as finasteride is metabolized in the liver.
• Prostate cancer: Proscar is not approved for the prevention of prostate cancer, and an increased risk of high-grade prostate cancer has been noted in some studies.
• Severe bladder problems or decreased urinary flow, including urinary obstruction

Drug Interactions

Before taking Proscar, it is essential to discuss all potential risks and interactions with your doctor or pharmacist. For complete and up-to-date information, refer to the product monograph in Canada.

Provide your doctor with a complete list of all your medications, including prescriptions, over-the-counter (OTC) drugs, vitamins, and herbal supplements. It is also essential to inform your doctor about any herbal teas, recreational drugs, or significant dietary changes you are making, as these could potentially interact with Proscar. Proscar may interact with other medicines, but is not limited to:
• Other 5-alpha reductase inhibitors (e.g., dutasteride) (concurrent use of other 5-alpha reductase inhibitors is not recommended due to similar mechanisms of action and no added benefit.
• Saw Palmetto
• Testosterone

Pregnancy and Breastfeeding

Proscar is contraindicated for use in women who are pregnant or may become pregnant, or who are breastfeeding. Finasteride can be absorbed through the skin and can cause abnormalities of the external genitalia of a male fetus. Therefore, pregnant women should not handle crushed or broken Proscar tablets. The excretion of finasteride in human milk is unknown.

Use in Children

Proscar is not indicated for use in the pediatric population. The safety and effectiveness of finasteride in children have not been established.

Use in the Elderly

Elderly patients on Proscar must be closely monitored by their healthcare provider. While appropriate studies have not demonstrated geriatric-specific problems that would limit the usefulness of finasteride in the elderly, they may be more susceptible to the potential for prostate cancer screening interference and persistent sexual side effects. Discuss these considerations with your doctor or pharmacist.

Frequently Asked Questions about Proscar at Canada Pharmacy Online:

Why is Proscar more affordable in Canada than in the United States?

Prescription drug prices, including Proscar, are generally lower in Canada than in the US due to a combination of factors, primarily government price regulations, differing market dynamics, and other economic considerations. In Canada, provincial and federal governments negotiate drug prices with pharmaceutical companies, which often results in lower costs compared to the US, where market forces play a more significant role. For more information, see the FAQs on Prescription Drug Importation from the Kaiser Family Foundation (KFF): https://www.kff.org/health-costs/issue-brief/faqs-on-prescription-drug-importation/

How much is the shipping?

Our shipping fee is a flat rate of $10.00 per order. Our pharmacy is dedicated to providing you with the lowest prices on high-quality products.

How do I place an order with your pharmacy?

Ordering from us is very simple. You can purchase online or call Customer Service at 1866.920.3784; for more information or to learn about the ordering process, visit our How to Order page.

Is there a limit on the number of tablets I can order at one time?

CanadaPharmacyOnline.com can only dispense a maximum of a three-month supply of Proscar at a time, as per your doctor's prescription.

Can I buy over the counter from you?

No, Proscar requires a valid prescription from your doctor. We do not sell this product without a valid prescription.

Do you ship to the United States?

Yes, we do. It usually takes 7 to 18 business days to receive your order from our pharmacy.

What is the best time to take finasteride?

Proscar (finasteride) is typically taken once daily, with or without food. It does not matter what time of day you take it, as long as you take it around the same time each day.

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The information on this page is sourced from independent third parties contracted by CanadaPharmacyOnline. While we cannot guarantee its medical accuracy, we strongly recommend consulting a healthcare professional for personalized advice regarding medications or medical conditions.

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