GHC Physiology And Pharmacology For Reducing Anxiety Discussion

I’m working on a psychology writing question and need the explanation and answer to help me learn.

What are some over-the-counter stimulants? How do they differ from cocaine and amphetamines? How are they similar? How are barbiturates and sedative hypnotics different from non-prescription methods to enhance sleep or reduce anxiety? What methods other than prescribed medication could be used to enhance sleep or reduce anxiety?