Health risks

Overwhelming fear or depression
Severe paranoia

LSD, also known as acid, can be taken orally in tablets, capsules, as a liquid or on paper that’s been saturated with the drug. An LSD episode, or trip, may last up to 12 hours or more. According to the Cleveland Clinic, the exact effect of LSD on the brain remains unknown, but the drug may affect your brain’s response to serotonin, a neurotransmitter that affects your emotions, moods and perceptions.

Hallucinations that merge and distort the senses (you may see colors, or feel sounds)

Intense mood swings and emotional disturbances

Hallucinations (seeing or hearing things that aren’t there)
Recurrence of hallucinations after you’ve stopped taking the drug (“flashbacks”)

Changes in the way you perceive time and space

Changes in the way you perceive yourself

Long term effects