IP stands for which route of administration?

• A. Intravenous injection
• B. Intraosseous administration
• C. Inhalation
• D. Intraperitoneal injection

Answer: (D)

IP stands for intraperitoneal administration, which means delivering a drug into the peritoneal cavity—the abdominal space that surrounds the organs. From there, the drug is absorbed through the peritoneal lining into the bloodstream. This is different from intravenous, which goes directly into a vein; intraosseous, which goes into bone marrow; and inhalation, which is breathed into the lungs. The intraperitoneal route is often used in small animals when IV access is difficult or for larger fluid volumes, but absorption can vary and there are risks such as irritation of the peritoneum or injury to abdominal organs.