Which dosage form is used for administration to the rectum?

• A. Rectal
• B. Ointment
• C. Oral
• D. Transdermal

Answer: (A)

Rectal administration uses a dosage form that is described as rectal. This name directly reflects the route of delivery and the intended site of action, whether for local effect in the lower bowel or for systemic absorption through the rectal mucosa. The other options describe forms or routes that are not specific to the rectum: oral is taken by mouth, transdermal is applied to the skin, and ointment is a topical form used on skin or mucous membranes and not inherently tied to rectal delivery (even though an ointment could be used rectally in some cases, it’s not the standard descriptor for rectal administration).