I’m writing a story where one of the characters comes in contact with a hallucinogen that plagues the person with their greatest fear. Could this hallucinogens be fatal? Would there be long term affects? How long does a normal hallucinogen last? What are the affects on the human body? Heart rate, breathing and so forth.
What are the common hallucinogens? These would be LSD, Hallucinogenic mushrooms, Psilocybin (active ingredient in mushrooms– I believe this can be synthesized), DMT, Ayahausca (which is an hallucinogenic jungle vine.)
Here are some links you might find interesting:
Psychology Today: Hallucinogens: http://www.psychologytoday.com/conditions/hallucinogens
Psilocybin and Brain Function: http://www.psychologytoday.com/blog/unique-everybody-else/201210/psilocybin-and-brain-function
Magic Mushroom altering personality: http://www.livescience.com/16287-mushrooms-alter-personality-long-term.html
The effects of hallucinogens generally last 6-12 hours. They are generally not fatal. What can be fatal is if a person does something under the effects of a hallucinogen– like jump off of a building.
Symptoms of hallucinogens: http://www.testsymptomsathome.com/sym_drug_hallucinogens.asp
Long term effects of abusing hallucinogens: Permanent floaters (in eye vision), psychosis, and mental health issues.
Two lists of short and long term symptoms: