Which class of drug closely relates to: 'Agranulocytosis and other blood dyscrasias, cholestatic jaundice, nausea and vomiting, hypoglycemia and photosensitivity'?

Correct Answer: B

Rationale: Sulfonylureas cause these side effects, including hypoglycemia.

Correct Answer: C

Rationale: Vitamin D is the mainstay treatment for hypoparathyroidism to enhance calcium absorption.

Correct Answer: A

Rationale: Tamsulosin and doxazosin (alpha-blockers) relax prostate smooth muscle, and finasteride (5α-reductase inhibitor) shrinks prostate size. Clonidine and cyproterone are not used for BPH.

Correct Answer: B

Rationale: Combined oral contraceptives increase stroke risk in migraineurs and can cause Budd-Chiari syndrome (hepatic vein thrombosis). Other effects are less directly linked.

Correct Answer: D

Rationale: Alfacalcidol increases calcium absorption, and thiazides reduce urinary calcium excretion, causing hypercalcaemia. Cinacalcet, calcitonin, and bisphosphonates lower calcium.