Final answer:
Doxazosin is used to treat both hypertension and benign prostatic hypertrophy (BPH), as it is an alpha-blocker that relaxes blood vessel muscles and the prostate. Other medications listed are for hypertension but not for BPH.
Step-by-step explanation:
Among the medications listed, Doxazosin is a medication that can be used to treat both hypertension and benign prostatic hypertrophy (BPH). Doxazosin belongs to a class of medications known as alpha-blockers. Alpha-blockers work by relaxing the muscles in the blood vessel walls and in the prostate, which can lower blood pressure and improve urinary symptoms associated with BPH.
While the other medications mentioned - Carvedilol, Amlodipine, and Nifedipine - are also used to treat hypertension, they are not typically used for BPH. Carvedilol is a beta-blocker that works by blocking beta-receptors associated with vasoconstriction and cardioacceleration. Amlodipine and Nifedipine are calcium channel blockers that prevent calcium from entering cells of the heart and blood vessel walls, resulting in lower blood pressure.