What is a key safety note for carbidopa-levodopa therapy?

• A. Take with meals.
• B. Discontinue gradually when side effects occur.
• C. Never stop it suddenly.
• D. Only take at night.

Answer: (C)

Not stopping carbidopa-levodopa abruptly is a crucial safety rule. Abrupt withdrawal can cause a dangerous withdrawal reaction, with a sudden return of Parkinsonian symptoms, severe rigidity, fever, confusion, and autonomic instability. The brain relies on a steady dopamine supply, so stopping suddenly can precipitate a life-threatening crisis; if discontinuation is needed, it should be tapered under a clinician’s guidance.

Other notes, like taking with meals, address GI tolerance and absorption considerations but aren’t universal safety mandates, and taking only at night isn’t a standard safety rule.