The HTML version of the chart is more beautiful, and it looks good in a web broswer.
The PDF version of the chart will look better when printed on paper.
Guide to the Chart:
The first portion of the chart lists several classes of recreational drugs:
Sedatives (e.g. alcohol)
Stimulants (e.g. cocaine)
Opioids (also known as narcotics, e.g. heroin)
Psychedelics (e.g. LSD)
Dissociative anesthetics (e.g. ketamine)
Deliriants (e.g. scopolamine)
Inhalants (e.g. nitrous oxide)
Other (e.g. caffeine, nicotine, muscimol, and more)
The second portion of the chart lists several neurotransmitters along with key drugs that act on each neurotransmitter.
Dose-Response Curve Images (ZIP) (This ZIP file contains: 4 .png files.)