"By mouth, under tongue, in nose, up rectum" describes which routes?

• A. Oral, Sublingual, Rectal, Intranasal
• B. IV, IM
• C. Topical
• D. Inhalation

Answer: (A)

Think about routes of administration and how drugs enter the body through mucous membranes or the gastrointestinal tract. The phrase lists four entry points: by mouth equals oral, under the tongue equals sublingual, in the nose equals intranasal, and up the rectum equals rectal. The option that corresponds to these four names is the best fit because it directly matches each described route. The other choices describe different routes— IV/IM are injections, topical is skin, and inhalation uses the lungs—so they don’t align with the listed methods.