Finasteride

(Commercial Product) Tablets USP

1 mg

Ready to prescribe?
Disclaimer: Images are for reference only; actual products may vary.

Product Overview

Finasteride Tablets USP Description1,2,3

Finasteride is a 5-alpha reductase inhibitor that has demonstrated benefit in patients with symptomatic benign prostatic hyperplasia, a condition commonly affecting men over the age of 50. Finasteride has also been shown to be beneficial in the treatment of androgenetic alopecia (male pattern hair loss).

Mechanism of Action1,2,3

Finasteride is an analog of testosterone that acts as a competitive, specific inhibitor of type II 5-alpha-reductase, an intracellular enzyme that converts testosterone to the potent androgen 5-alpha-dihydrotestosterone. The type II 5-alpha-reductase isozyme is primarily found in prostate, seminal vesicles, epididymides, and hair follicles, as well as liver. Dihydrotestosterone has been shown to increase prostate growth and can lead to hair thinning. Finasteride has been shown to shrink the prostate to improve urinary flow and in scalp lowers dihydrotestosterone to slow hair loss and promote regrowth.

Adverse Reactions1,2,3

  • Decreased libido
  • Erectile dysfunction
  • Ejaculatory disorders (e.g., reduced volume)
  • Breast tenderness or enlargement
  • Gynecomastia

Contraindications1,2,3

  • Contraindicated in women who are or may become pregnant due to risk of teratogenicity (can cause abnormalities in the external genitalia of male fetuses).
  • Hypersensitivity to finasteride or any component of the tablet.

Precautions1,2,3

  • Finasteride lowers serum PSA levels by ~50% after 6 months, which can mask early detection of prostate cancer.
  • Use cautiously in patients with hepatic dysfunction. The drug is metabolized extensively in the liver.
  • Store at controlled room temperature (20°C to 25°C / 68°F to 77°F)
  • Protect from moisture and light
  • Keep in a tightly closed container
  1. Finasteride (Proscar) package insert www.accessdata.fda.gov/drugsatfda_docs/label/2010/020180s037lbl.pdf
  2. Finasteride (Propecia) www.accessdata.fda.gov/drugsatfda_docs/label/2012/020788s020s021s023lbl.pdf
  3. Clinical Pharmacology finasteride clinical monograph 2025 https://www.clinicalkey.com/pharmacology/

WPPL operates as a 503A compounding pharmacy and prepares individualized prescription medications pursuant to provider direction. Compounded preparations are not reviewed, tested, or approved by the FDA.

This listing also includes commercially manufactured products for convenience; these items are not compounded by our pharmacy and are sold as provided by their manufacturers. Actual products in stock at time of dispensing may vary due to supply chain variability. Any statements regarding non-compounded products are manufacturer-supplied, have not been evaluated by the FDA, and are not intended to diagnose, treat, cure, or prevent any disease. WPPL does not verify or endorse any therapeutic claims made by manufacturers. Please refer to original labeling for complete product information.

EXPLORE MORE

Related Medications

Licensed to ship across the U.S.

Your orders arrive promptly and privately, delivered directly to your door.

Providers: Let’s Partner for Better Patient Care

If you are a physician, clinic, or practice seeking a dependable Compounding Pharmacy partner, WP Pharma Labs is here to help. With dedicated account setup, streamlined ordering and responsive service, we support your therapeutic goals with specialized compounds designed for your patients.

To check product availability, check on the status of an existing order, request refills:
orders@wppharmalabs.com

New providers setup / update an existing account:
newaccounts@wppharmalabs.com