Anesthetic agents can be administered in several ways:

Anesthesia can be started by an intravenous injection so the patient becomes unconscious rapidly (this is the most common application of anesthesia).

Anesthetic agents may be breathed by your animal until they lose consciousness, called inhalation induction.

In a multimodal approach, we may administer multiple drugs that act by different mechanisms of action to produce the desired analgesic effect.