Pharmacology In treatment of parkinsonism, levodopa is combined with carbidopa: A Decrease the treatment duration B Decrease the central side effects of L-dopa C Decrease the effectiveness of L -Dopa D Increase the crossing of levodopa through blood brain barrier 💡 Explanation In treatment of parkinsonism, levodopa is combined with carbidopa: ✓ Correct Answer: D. Increase the crossing of levodopa through blood brain barrier