Pharmacology Blood brain barrier is crossed by: a) Dopamine b) Propranolol c) Glycopyrrolate d) Physostigmine e) Streptomycin A abcd B bcde C ad D bd 💡 Explanation Blood brain barrier is crossed by: a) Dopamine b) Propranolol c) Glycopyrrolate d) Physostigmine e) Streptomycin ✓ Correct Answer: D. bd