Explanation

Penicillin is one of the most commonly used broad-spectrum antibiotics globally

They fight bacterial infections by destroying the bacteria's cell walls.

It is effective against infections caused by:

• Gram-positive cocci
• gram-positive rods
• most anaerobes
• gram-negative cocci

Panadol, Paracetamol, and Brufin are not antibiotics.

They are used as painkillers