For a drug to be psychoactive its molecules must be capable of doing what?
A) Block serotonin synthesis.
B) Influence the sympathetic branch.
C) Inhibit firing rates of neurons.
D) Passing through the blood-brain barrier.

Question

Quizplus · Accepted Answer

Psychoactive drugs exert their effects by reaching the brain, which requires passing through the blood-brain barrier. This barrier selectively allows substances to enter the brain's environment from the bloodstream.

For a Drug to Be Psychoactive Its Molecules Must Be