Most hallucinogens are controlled substances in the US because of their alleged potential for abuse. though if not taken responsibly can lead to bodily harm or death. Some have limited application in medicine and research. All Tryptamine Hallucinogens were made illegal along with LSD some time during the 60s.
Stimulants
yes
Depressants, stimulants, and hallucinogens
Stimulants, depressants, narcotics, hallucinogens.
Alkyl nitrate poppers are classified as stimulants due to their vasodilatory effects, which lead to increased heart rate and blood flow. They do not cause hallucinations like traditional hallucinogens.
The harmful effects of stimulants, depressants, hallucinogens, anabolic steroids and inhalants on the body are different for each thing used. Stimulants can lead to the heart beating too fast while depressants could slow the heartbeat down too much.
Stimulants and depressants have opposite effects on the brain. Stimulants activate the central nervous system, while depressants (as their name implies) depress it.
Substances that are not stimulants include depressants (such as alcohol and benzodiazepines) and hallucinogens (such as LSD and psilocybin). These substances work on the central nervous system in different ways compared to stimulants.
I'v heard of four categories, if that's what you're after; Depressants, Stimulants, Hallucinogens, and I think the fourth was Painkillers?
Depending on the Dosage, Nicotine is can be either a Depressant and Stimulant. With a low dosage it is a stimulant, where as with higher dosages it becomes a depressant.
The job of detoxifying many substances is the job of the liver. The liver itself can be damaged by doing this process.
Toxic substances such as stimulants, depressants, and hallucinogens are primarily metabolized in the liver. The liver contains enzymes that break down these compounds, facilitating their elimination from the body. While some metabolism can occur in other organs, such as the kidneys and lungs, the liver is the main site for detoxification processes. After metabolism, the byproducts are often excreted through urine or bile.