LSD

LSD is the most common hallucinogen and is one of the most potent mood-changing chemicals. It is manufactured from lysergic acid, which is found in ergot, a fungus that grows on rye and other grains.
LSD short term effects start  between 20 minutes to two hours after ingestion. The first signs are a sense of euphoria and expectation, along with a tingling body feeling.Once started, the effects usually take between 30-45 minutes to reach their peak. The peak effect lasts from two to five hours. A clear symptom is rich visual hallucinations. Colors seem more vibrant. Surfaces may ripple and shimmer. You may notice tiny details on objects. Music sounds richer and louder.Delusions are another effect of LSD use.
Long term effects can include flashbacks. If you had "bad trip" you can you can feel down for days even weeks.