Intranasal administration delivers medication through which route?

• A. Through the nose
• B. Through the rectum
• C. Through the mouth
• D. Through the skin

Answer: (A)

Intranasal administration delivers medication through the nose, with absorption across the nasal mucosa into the bloodstream. The nasal lining is very vascular and thin, so drugs can enter circulation quickly. This route often avoids the gastrointestinal tract and liver first-pass metabolism, making it useful for rapid or sometimes non-oral delivery. It is distinct from routes through the rectum (rectal), the mouth (oral), or the skin (topical/transdermal).