2 Answers

  1. Well, amphetamines there, LSD, psilocybins (mushrooms). Stimulants and hyperstimulants, in general. Only there is a risk of overdoing the dose and the effect is not all the same.

  2. LSD expands perception and is not physiologically addictive – only psychologically addictive. Read about Timothy Leary: it's on the topic. He was called the LSD guru, and he researched the effects of the drug on the human brain.

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