The Periodic Table is provided for the more curious and chemistry minded readers. Psychoactive drugs can be classified to whether they are natural or manmade, produced by our own bodies or plants, crude mixtures of substances or single, purified chemicals. These differences may influence the relationships people form with drugs and users, especially should be aware of them. The following information is provided by Rick Strassman MD Drugs with the most complex and interesting effects on the human mind, they come from plants, mushrooms, and the laboratory. People have used them for thousands of years, including for spiritual and healing purposes.
Effects are similar, but differ in how fast they start and how long they last.
They are physically safe. Reports of chromosome damage and birth defects in the 1960's later turned out to be false. Some people get very dependent on them. Tolerance develops to the psychological effects, but not to the physical ones. MDMA damages certain parts of the brain, and it's not clear that they ever repair themselves.