Personal Experience: 4-AcO-DMT as a nootropic.

Description: 4-AcO-DMT is a chemical that metabolizes into psilocybin and psilocin (similar to magic mushrooms) but is fairly legal. A normal "get high" dose would be 20mg. I take ~2mg for nootropic effects.

Typical user experiences: Experiences differ greatly among users, but at ~10mg most experience slight visuals, "deep" thought, and a genuine childlike interest in everything; beyond that, shit gets weird and productivity is tough.

My experience: Taking 2mg, it gives me a very interesting type of energy for 4-6 hours. No matter the task, I'm curious about it and and really enjoy giving it my fullest. It's really useful for homework, and even for attending and listening to boring classes. Furthermore, I feel the "deep thought" aspect even helps my understanding of math homework, but it may just be the energy/motivaiton.

Conclusion: 4-AcO-DMT is an amazing nootropic: It doesn't simply give you energy, it makes everything fun and interesting, causing natural energy/motivation. Experiences do however differ greatly among users, so I strongly recommend you research/experiment for yourself.