LSD (lysergic acid diethylamide)

Similar term(s): acid, blotters, smilies, tab.


Powerful hallucinogenic drug that is derived from a fungus found growing on rye and other wild grasses.

LSD is actually a white powder, but is sold on the streets in liquid form, or soaked into paper sheets. Only small amounts of the drug are needed to get an effect, so it can also be absorbed into sugar cubes and then swallowed.

The effects of LSD, known as a trip, are dependant on the individual, how much is taken, how the user feels and the situation they are in. Trips usually begin about half an hour after taking the drug, peak up to six hours later and then eventually fade after about twelve hours. No trip is ever the same.

Because it is an hallucinogenic drug it changes the way the mind perceives things, so sense of movement can be impaired and time may seem to speed up or slow down. Colours, sounds and surroundings may become distorted, and flashbacks, or feelings of the mind being separated from the body are also commonplace.

Source: GreenFacts, based on A to Z of Drugs 


Once a trip begins, there is absolutely no way to stop it, and bad trips are known to be extremely disturbing and frightening. Flashbacks from a trip can be experienced long after the drug has been taken, and they can be extremely vivid, leaving the user feeling very shaken and disorientated.

Users can feel very paranoid and threatened, and the experience of being totally out of control can have psychological effects. Indeed, LSD can complicate problems such as depression and anxiety. Moreover, risk of having an accident while tripping is increased.

Source: GreenFacts Digest on Psychoactive Drugs WHO

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To read about this term in context:

GreenFacts Summary on Psychoactive Drugs Tobacco, Alcohol, and Illicit Substances


Español: LSD (lysergic acid diethylamide)
Français: LSD
Nederlands: LSD (lyserginezuur diëthylamide)

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