This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Which of the following antiglaucoma drug can lead to drowsiness 
Select and explain. 
A. Apraclonidine, B. Dipevefrine, C. Timolol, D. Brimonidine
D: Brimonidine
Answer: D: Brimonidine 
Explanation: Brimonidine is α2 - blocker used for glaucoma that depress CNS and can lead to drowsiness.
It can cross BBB and also lead to apnea in newborns.