LSD Blotter Paper Art

LSD reliably causes pupil dilation, reduced appetite, and wakefulness. Other physical reactions to LSD are highly variable and nonspecific, and some of these reactions may be secondary to the psychological effects of LSD. The following symptoms have been reported: numbness, weakness, nausea, hypothermia or hyperthermia (decreased or increased body temperature), elevated blood sugar, goose bumps, increase in heart rate, jaw clenching, perspiration, saliva production, mucus production, sleeplessness, hyperreflexia, and tremors. Uterine contractions have been reported in animals. Some users, including Albert Hofmann, report a strong metallic taste for the duration of the effects.
LSD is not considered addictive by the medical community. Rapid tolerance build-up prevents regular use, and there is cross-tolerance shown between LSD, mescaline and psilocybin. This tolerance diminishes after a few days without use and is probably caused by downregulation of 5-HT2A receptors in the brain.