Effects of taking LSD
The effects of LSD can be unpredictable. The effect of administering LSD depends on the amount of taken, the user's personality, mood, and expectations, and the surrounding environment in which the drug is used. Generally the user with begin to experience the effects within 30 to 60 minutes of taking it.

Once the LSD has taken effect, the user will experience changing sensations and feelings more so than physical signs. It is common for the user to feel several different emotions at once or swing rapidly from one emotion to another. When taken in large enough quantities, LSD produces delusions and visual hallucinations. Sense of time and self changes, and sensations may seem to "cross over," giving the user the feeling of hearing colors and seeing sounds. For many, these changes are frightening and cause for panic
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Referred to as a 'trip' or 'bad trip', depending on whether it was a good or bad experience, the effects of LSD will generally begin to clear after about 12 hours. The first physical effects include numbness, muscle weakness and trembling, rapid reflexes, increased blood pressure, heart rate, and temperature, impaired motor skills and coordination, dilated pupils, and occasionally nausea and seizures. Laughter is often one of the most noticeable physical signs. This laughter can occur at things that aren't particularly funny and often uncontrollably.

Dramatic changes take place in perception, thought, and mood shortly after the physical effects become apparent.
• Vivid visual and aural 'pseudo-hallucinations' the user is aware of as not being real.
• Distorted perceptions of time, distance, gravity (sensations of floating or being pressed down), and the space between oneself and one's environment. For some this can be a feeling of oneness with the universe, while for others it may be a feeling of terror.
• Fusion of the senses such as seeing sounds and feeling colors is often described.
• Diminished control over one's thought processes, resulting in memories becoming mixed with reality, or things of insignificance taking on deep meaning.

Side effects of LSD
Side effects of taking LSD include and are not restricted to
• Dilated pupils, higher body temperature, increased heart rate and blood pressure, sweating, loss of appetite, sleeplessness, dry mouth, and tremors.

A common and rather unpleasant experience reported by some LSD users is severe, terrifying thoughts and feelings, fear of losing control, fear of insanity and death, and despair. There have been deaths documented as a result of LSD intoxication.

Flashbacks are a common anomaly of LSD use, occurring without the user having taken the drug. These flashbacks can occur suddenly, often without warning, and may occur within a few days or more than a year after LSD use. Flashbacks are visual images that range from formless colors to frightening hallucinations. Although flashbacks are common among LSD users, and can be experienced by otherwise healthy individuals, they generally occur in people who have used hallucinogens chronically or have an underlying personality problem. Flashbacks and 'bad trips' are only part of the risks associated with LSD use. If you are going to indulge in LSD use beware that a relatively long-lasting psychoses, such as schizophrenia or severe depression, is a possible side effect. On the occasions that such psychosis does occur, it is difficult to impossible to actually determine the extent and mechanism of the LSD involvement.

LSD addiction
Because LSD and even LSD abuse doesn't produce compulsive drug-seeking behavior as do cocaine, amphetamine, heroin, alcohol, and nicotine, it is considered to be non-addictive. In most cases users of LSD will simply decide to decrease or stop its use over time. However, like many of the addictive drugs, LSD does produce tolerance, resulting in some users taking progressively higher doses to achieve the state of intoxication that they had previously achieved, and for some users, LSD can bring with it some rather nasty LSD side effects.

Overcoming tolerance is an extremely dangerous practice with any drug let alone a drug as unpredictable as LSD, and the type of LSD side effects that can and often do occur should be enough reason to simply say NO to LSD.