Acid is the colloquial name given to lysergic acid diethylamide, usually shortened to LSD. This is a psychedelic drug that binds to receptors in the brain. It can cause different reactions in different people, with some of the most common impacts being changes in sensory perception, emotions, and intensified thoughts. If the dosages are particularly high, LSD can lead to auditory and visual hallucinations. Some of the other impacts include increased body temperature and dilated pupils. In the central nervous system, LSD binds to the dopamine and serotonin receptors. Because it binds to more receptors, it can have a faster impact on someone when compared to other drugs, such as psilocybin. Typically, individuals begin to feel effects within 30 minutes. Its impacts can last up to 20 hours, but the exact length of the effects depend on how much someone takes and what their tolerance is like.