LSD (lysergic acid diethylamide) is the most widely used
hallucinogenic drug. Hallucinogenic drugs cause a person to see vivid images,
hear sounds, and feel sensations that seem real but are not. LSD is also called
acid, blotter, or dots. It is odorless and
colorless and has a slightly bitter taste. It can be obtained as a colored
tablet, clear liquid, or thin square of gelatin (window panes) or on blotter
paper. Most often, LSD is licked off blotter paper or taken by mouth. But
the gelatin and liquid forms can be put in the eyes.
The effects of LSD are unpredictable and depend on the amount taken;
the person's personality, mood, and expectation; and the situation in which the
drug is used. Effects are usually felt within 30 to 40 minutes after taking the
drug. The LSD experience is often called a "trip" and can last up to 12 hours.
Dilated pupils, increased body temperature,
increased heart rate and blood pressure, sweating, loss of appetite,
sleeplessness, and dry mouth.
Changes in sensations and feelings.
The person may feel several different emotions at the same time or rapidly swing from
one emotion to another. Also, the person may confuse sensations and feelings,
such as "hearing" colors or "seeing" sounds.
Loss of time. The
person may feel that time is standing still.
Delusions and visual
hallucinations, if taken in large doses. Delusions are false beliefs, and
hallucinations are seeing and hearing things that are not present.
A "bad trip" may contain terrifying thoughts, feelings, and fears. Also, LSD can cause flashbacks, in which the person suddenly relives
certain aspects of the experience without having taken the drug. Flashbacks may
occur a few days or more than a year after use of LSD.
Serious psychiatric conditions can develop after even one use of LSD.
The cause of these effects is not known. The effects include:
Drug-induced psychosis. Psychosis is a serious
condition in which the person has lost the ability to recognize reality, think
rationally, or communicate with others. The person may have dramatic mood
swings, ranging from being extremely overactive (mania) to severe depression.
Psychosis from LSD may last for years.
perception disorder (HPPD). With HPPD, the person has flashbacks in which the
person experiences recurrences of some of the sensory distortions that occurred
while under the influence of the drug. The person may have the same flashback
for years after stopping use of LSD.
LSD is not considered an addicting drug. But it does require
increasingly higher amounts to obtain the same effect (tolerance).
LSD is typically out of a person's system within 24 hours, and
standard drug screens (toxicology tests) are not able to detect it. But
special laboratory tests can be used to detect LSD in the blood.
Signs of use
It is difficult to detect LSD use. Things that point to LSD use may include:
Dilated pupils, sweating, loss of appetite,
sleeplessness, and dry mouth if recently taken.
Possession of small
squares of blotter paper (sometimes stamped with cartoon characters) or other
forms of the drug.
How this information was developed to help you make better health decisions.