Questions: Which medication is an alpha-1 blocker used to treat hypertension? A) Metoprolol B) Losartan C) Doxazosin D) Digoxin

The answer to question 45 is C) Doxazosin: the original text in the question...

Explanation for each option: A) Metoprolol - Incorrect. Metoprolol is a beta-blocker, not an alpha-1 blocker. It is used to treat hypertension and other cardiovascular conditions by blocking beta-adrenergic receptors. B) Losartan - Incorrect. Losartan is an angiotensin II receptor blocker (ARB), not an alpha-1 blocker. It is used to treat hypertension by blocking the effects of angiotensin II, which causes blood vessels to constrict. C) Doxazosin - Correct. Doxazosin is an alpha-1 blocker. It works by relaxing the muscles in the blood vessels, which helps to lower blood pressure. D) Digoxin - Incorrect. Digoxin is a cardiac glycoside used to treat heart failure and atrial fibrillation. It works by increasing the force of heart contractions and regulating heart rate, but it is not an alpha-1 blocker.

For question 46, the text is incomplete, so I cannot provide a complete answer. However, I can mention that common side effects of selective serotonin reuptake inhibitors (SSRIs) include nausea, headache, sexual dysfunction, and insomnia.