Psilocybin is a naturally occurring psychedelic compound found in certain species of mushrooms, often referred to as "magic mushrooms." As of my knowledge cutoff in September 2021, psilocybin is classified as a Schedule I controlled substance in the United States, meaning it is illegal to manufacture, possess, or distribute it outside of approved research settings. However, there has been growing interest in the potential therapeutic uses of psilocybin, particularly for conditions such as depression, anxiety, and post-traumatic stress disorder (PTSD).

In recent years, there have been some clinical trials and research studies exploring the therapeutic effects of psilocybin, and preliminary results have shown promising outcomes. Some pharmaceutical companies and research institutions are actively involved in studying the therapeutic potential of psilocybin, and the field of psychedelic-assisted therapy is gaining attention.

While psilocybin is not currently available in Psilocybin pharmaceutical grade for general use, there is ongoing research and development aimed at obtaining regulatory approvals to use psilocybin as a prescription medicine. It's important to note that the availability and legal status of psilocybin may vary in different countries and regions. I recommend consulting with a medical professional or researching the specific regulations in your jurisdiction for the most up-to-date information.