Which drug class kills and inhibits growth of bacteria?

• A. Anti-impotence
• B. Anti-infective
• C. Antimigraine
• D. Antiprotozoal

Answer: (B)

Understanding how drugs tackle infections: anti-infectives are medicines used to treat infections caused by microbes. When an anti-infective acts against bacteria, it can either kill the bacteria directly (bactericidal) or stop them from multiplying (bacteriostatic). This dual capability—killing or inhibiting growth of bacteria—falls under the umbrella of anti-infectives. Other options don’t address bacterial infections: anti-impotence drugs treat erectile dysfunction; anti-migraine drugs treat migraines; anti-protozoal drugs target protozoan infections, not bacteria.