Dronabinol was rescheduled in 1994 from annex I to annex II in the Narcotics Regulation (Betäubungsmittelgesetz) as a way to ease investigation; in 1998 dronabinol was rescheduled from annex II to annex III and due to the fact then has long been obtainable by prescription.five These chemical substances irritate your throat and leave a nasty flavor