• Load image into Gallery viewer, PROPECIA/PROSCAR (Finasteride)
  • Load image into Gallery viewer, PROPECIA/PROSCAR (Finasteride)
  • Load image into Gallery viewer, PROPECIA/PROSCAR (Finasteride)
  • Load image into Gallery viewer, PROPECIA/PROSCAR (Finasteride)


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What is this medication?

Finasteride, Propecia/Proscar
5-Alpha-Reductase Inhibitor

Officially indicated for androgenetic alopecia (male pattern hair loss) and benign prostatic hyperplasia.

How does this medication work? 

Proscar, Propecia/Finasteride competitively binds to type two 5-alpha reductase which are enzymes that are involved in steroid metabolism, androgen, and estrogen.  By inhibiting the conversion of testosterone to dihydrotestosterone in man tissues including the prostate gland, seminal vesicles, epididymis, skin, hair follicles, liver, and brain.  The suppression in serum dihydrotestosterone levels which will reduce androgen development such as hair loss/baldness and prostate enlargement.

How should I take this medication? 

Androgenic Alopecia (Male Pattern Loss)
Oral: Take 1mg once daily.  Continue therapy for at least 12 months to assess full clinical effect.  Daily continuous use is required to maintain the benefit.

Benign Prostatic Hyperplasia 
Oral: Take 5mg once daily; generally, in combination with an alpha-1 adrenergic antagonist

How to Use Finasteride, Propecia/Proscar: Take with or without meals.  Pregnant women and women of childbearing age should not touch or handle crushed or broken tablets. 

What should I watch for while using this medication? 

Use with caution in patients with hepatic impairment

Do not use in prostate cancer

What if I miss a dose?

If you miss a dose of medication, try to take it as soon as possible. However, if it is almost time for your next dose, take only that scheduled dose. Do not take double or extra doses.

How should I store this medication?

Keep out of the reach of children at all times. Store at room temperature, 59 to 86° F (15 to 30° C). Protect from light. Keep the container tightly closed. Properly dispose of any unused medication after the expiration date.

What are the possible side effects of using this medication? 

Is generally well tolerated with the most common adverse reactions effecting the genitourinary system:


Genitourinary: Impotence (monotherapy: 5% to 19%)