Which of the following characteristics does NOT apply to morphine?

• A. It has sedative properties
• B. It is an analgesic
• C. It has anti-inflammatory properties
• D. It may cause convulsions in cats

Answer: (C)

Morphine is an opioid analgesic that provides pain relief and often has sedative effects. It works by activating mu receptors in the central nervous system, which dulls the sensation of pain and can produce calmness or drowsiness. It does not have anti-inflammatory properties because opioids do not inhibit the enzymes (like COX) that drive inflammation or prostaglandin production. Anti-inflammatory activity is a hallmark of NSAIDs (and some steroids), not opioids. So the statement claiming morphine has anti-inflammatory properties does not apply to it. Morphine may cause other CNS effects, and in cats high doses can lead to various adverse effects, but that aspect doesn’t change the fact that it lacks anti-inflammatory action.