In what form can injections be given for drug administration?

Injections are a specific method of drug administration where a drug is directly delivered into the body, typically using a syringe and needle. The correct choice highlights that "injection and implant" represent forms through which drugs can be administered directly. An injection allows for immediate systemic absorption of the medication, which is particularly beneficial for patients needing rapid therapeutic effects, such as in emergencies.

Implants refer to a delivery method where solid drug formulations are placed under the skin, providing prolonged release of the drug over time. This can be particularly useful for medications that require steady levels in the bloodstream, enhancing compliance as it reduces the need for frequent dosing.

Other forms of drug administration listed in the other options, such as tablets, capsules, and topical methods, do not qualify as injectable routes. Understanding the appropriate methods of drug administration is crucial in veterinary pharmacology, as it influences the efficacy, safety, and compliance of treatment regimens.