NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Study for the NAPLEX exam with a comprehensive quiz featuring multiple-choice questions and in-depth explanations. Build your pharmacological knowledge and increase your chances of passing the pharmacist licensure examination!

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Which of the following drugs is used both for BPH and alopecia?

Finasteride
Dutasteride
Tamsulosin
Silodosin

The correct answer is: Finasteride

Finasteride is used for both BPH (Benign Prostatic Hyperplasia) and alopecia (hair loss). It works by inhibiting the enzyme 5 alpha-reductase, which converts testosterone to dihydrotestosterone (DHT). DHT is responsible for the growth and enlargement of the prostate, as well as hair loss. Therefore, by reducing DHT levels, finasteride can improve symptoms of BPH and promote hair growth. Both dutasteride and tamsulosin are also used for BPH, but they do not have any affect on hair loss. Dutasteride works by inhibiting both types of 5-alpha reductase enzymes, while tamsulosin works by relaxing the muscles in the prostate and bladder, making it easier to urinate. Silodosin is also used for BPH, but it is not approved for the treatment of alopecia. It works by relaxing the muscles in the bladder and prostate, similar to tamsulosin. It is important to note that while these medications may help improve symptoms of BPH, they will not have any effect on hair loss.