When a drug is absorbed through the mouth, what is the method of administration called?

The method of administration referred to when a drug is absorbed through the mouth is called oral administration. This method involves taking medications or substances through the digestive tract, where they are broken down and absorbed into the bloodstream. Oral administration is one of the most common ways of administering drugs due to its convenience and ease of use.

In contrast, other methods of administration involve different routes. Intramuscular administration involves injecting a substance directly into a muscle, allowing for faster absorption than oral routes but also requiring a needle. Intravenous administration involves directly injecting substances into a vein, providing immediate effects as the substance enters the bloodstream more rapidly. Subcutaneous administration involves injecting a substance into the layer of fat beneath the skin, where it can be absorbed slower than the intramuscular route. Each method has its specific contexts in which it is most effective, but when absorption occurs through the mouth, the correct terminology is oral.