A bolus is which of the following items?

• A. A large tablet for administering drugs to farm animals
• B. A mixture of more than one drug in the same syringe
• C. An ampule of a drug for injection
• D. A drug diluted to a lower concentration

Answer: (A)

A bolus is a large solid dosage form given orally to livestock. It’s a single, large tablet designed to deliver a medication (or a mineral supplement) without injections, often administered with a balling gun. This form is chosen for farm animals because it allows one-dose administration and doesn’t require an injectable route. It isn’t an injected preparation (that would be an ampule or vial), and it isn’t a liquid that’s been diluted. The key idea is a large oral tablet meant to be swallowed and provide the drug as it passes through the digestive system.