How Does LSD Affect the User? (Long Term Effects)

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Even after one is done "tripping," LSD is still dangerous to his/her health. It can bring about insomnia, or even frightening flashbacks of a bad trip up to a year after use. If flashbacks reoccur and cause "significant distress or impairment in social or occupational functioning," one may have developed HPPD (Hallucinogen-Induced Persisting Perceptional Disorder.

Trip- The high received following ingestion of LSD, lasts about 12 hours