Final answer:
Using oral concentrate instead of IM or IV has the advantage of faster absorption and less painful administration.
Step-by-step explanation:
Using oral concentrate instead of IM or IV has the advantage of faster absorption and less painful administration. When a drug is administered orally, it has to go through the digestive system before being absorbed into the bloodstream, which can take time. In contrast, when a drug is administered via IM or IV, it bypasses the digestive system and is directly delivered into the bloodstream, resulting in quicker absorption and faster onset of action. Additionally, oral concentrate is more convenient and less invasive than injections, which can be uncomfortable and require specific training to administer.