Which drug is a steroid?

• A. Nystatin
• B. Cephalexin
• C. Metronidazole
• D. PredniSOLONE

Answer: (D)

This question tests your ability to identify a corticosteroid, a type of steroid, among drugs that are antifungal or antibacterial. Steroids like prednisolone are synthetic glucocorticoids used to reduce inflammation and suppress the immune response. They work by dampening inflammatory pathways, lowering cytokine production, and stabilizing immune activity, making them helpful for allergies, arthritis, and immune‑mediated diseases. Prednisolone is a classic example of a corticosteroid.

Nystatin is an antifungal agent; Cephalexin is a cephalosporin antibiotic; Metronidazole is an antibiotic/antiprotozoal. They do not possess the anti-inflammatory immunosuppressive steroid activity that prednisolone has.