What's ET? It's pretty difficult for me to Google this acronym given that it mostly finds "et al" when I couple this with LSD queries. Is it ergotamine from the other subthreads here?
Interestingly, ET is used to treat cluster headaches and migraines.
https://www.sciencemag.org/news/2011/06/lsd-alleviates-suici...
We used to sell to quite a few people who similarly suffered from the condition, and used mushrooms to treat it - but it was an impossible thing for us to market or advertise, due to the way the MHRA (Medicines and Health Regulatory Agency) dictates what beneficial claims can be stated about retailed items.
- ed typo, grammar