Genitourinary System Assessment Related

Review Genitourinary System Assessment related questions and content

A 75 year old male with BPH has continues to have urinary symptoms of * prostatic obstruction after trial of alpha blocking drug tamsulosin . Dutasteride is added to his therapy,he is also taking hydrochlorothiazide sildenafil and

  • A. Which of the following medication could have an interaction with dutasteride?
  • B. Tamsulosin
  • C. Testosterone
  • D. Seldinal
Correct Answer: D

Rationale: The correct answer is D: Sildenafil. Dutasteride and sildenafil are both metabolized by the same enzymes in the liver, specifically CYP3A4 and CYP2C9. When taken together, sildenafil can increase the blood levels of dutasteride, leading to a higher risk of side effects. Tamsulosin (choice B) is commonly used in combination with dutasteride for BPH without significant interactions. Testosterone (choice C) is not typically used in BPH treatment and does not interact significantly with dutasteride. Therefore, the potential interaction between dutasteride and sildenafil is the reason why choice D is correct.