This photo shows the actually size of the squares. LSD can also be rubbed against the skin. More than 200 types of LSD tablets have been encountered since 1969 and more than 350 paper designs have been acquired since 1975.
Designs range from simple stars in black and white to exotic artwork in full four-color print.
Some users are now as young as junior high age. Dosages of LSD are measured in micrograms, or millionths of a gram. By comparison, dosages of cocaine and heroin are measured in milligrams, or thousandths of a gram. The dosage level that will produce an hallucinogenic effect in humans generally is considered to be 25 micrograms. Over the past several years, the potency of LSD obtained during drug law enforcement operations has ranged between 20 and 80 micrograms per dosage unit.