Which is the drug among the following that blocks the uptake of dopamine and norepinephrine into presynaptic nerve terminals and also blocks sodium channel in the axonal membrane: (A) Epinephrine, (B) Ephedrine, (C) Cocaine, (D) All of the above
Answer is C. It is a local anaesthetic agent (acts by inhibiting Na+channel in the axonal membrane) that also possesses indirect sympathomimetic activity.