What it looks like and how it's taken

Comes in small squares of paper, often printed with designs, or as tiny tablets called microdots and dots. Tablets are swallowed. It is a myth that LSD can be absorbed through the skin from transfers.

Immediate effects

Hallucination—the 'trip'. Starts within an hour and can last 8 - 12 hours or longer. Surroundings seem altered, colours brighter, sounds different, movement and time may seem distorted.