LSD is just one head-altering compound in a category of drugs identified as hallucinogens, which cause folks to get hallucinations—items that somebody sees, hears or feels that seem like real but are the truth is developed via the head. Using LSD outdoors a scientific environment might be harmful. Mood shifts, https://www.tumblr.com/lsdvibes/757469329295048704/historyoflsd?source=share