PCP or Ketamine, on the other hand, may cause dependence, an intense craving for more of the drug. LSD has a half-life of four hours, and most of the drug is eliminated rather quickly. PCP, on the other hand, can be detected in the urine from 1-7 days for a single use, much longer for chronic use. Ecstasy can be detected up to four days in the urine. Adolescents are particularly at risk of adverse reactions from hallucinogen use as they enter puberty, a time of rapid physical and emotional changes.
Hallucinogens are particularly dangerous because the effects are so unpredictable.
They can cause violent behavior in some and suicidal tendencies in others. As memory, perception, and judgment are clouded under the influence, users are at risk of severe injuries, overdose, and death from drowning, burns, falls, and car accidents. Sometimes, hallucinogen use can uncover severe mental disorders, such as schizophrenia or severe depression. Before reaching adolescence, youth need to receive the support, guidance, and opportunities to develop healthy bonds with parents, schools, and communities. Parents can help by becoming informed and talking to their teenagers about about drug use.