The effects of higher doses persist for 10 to 12 hours. Tolerance develops rapidly. They can come in the form of tablets, capsules, little pills, very small square pieces of blotting paper with pictures on them. It can last up to anything from 4 to 12 hours, depending on how many have been taken. Effects depend on the mood of the user it causes powerful distortion to vision and hearing, hallucinations and lack of concentration.
Strengths vary and it is impossible to know how strong a dose has been taken.
People's sense of time, place, sound and colour can be mixed up. This can include feelings of paranoia, anxiety, fear, and people can forget that it is the drug causing these effects, but they think they are going mad. If people are feeling low or depressed, they are more likely to have a bad trip, people with mental health problems and are unstable can really flip out on l.s.d. Having a bad psychological reaction to LSD and similar drugs is common. The scary sensation may last a few minutes or several hours, and be mildly frightening or terrifying.