Which of the following is NOT an injection route?

• A. Subcutaneously (under the skin)
• B. Orally (by mouth)
• C. Intramuscularly (Into the muscle)
• D. Intravenously (Into the veins)

Answer: (B)

Injection routes involve delivering a drug with a needle directly into body tissues or the bloodstream. Subcutaneously is an injection into the tissue under the skin, intramuscularly is into a muscle, and intravenously is into a vein. These methods require puncturing the skin and are designed to place the drug directly where it can act, often giving faster or more precise effects.

Oral administration, by contrast, is not an injection. The drug is swallowed and must pass through the digestive system, where it is absorbed more slowly and can be altered by liver metabolism before reaching systemic circulation. Because it doesn’t involve piercing the skin with a needle, oral administration is the route that is not an injection.