I haven't but I have seen someone freak out after smoking it but it lasted about 10 minutes. Another friend tried and hated it too. This is when it was the pure JWH018 compound that was 5 times stronger than THC. If you don't get better, can you get a sample and see if you can get it analyzed to see what the chemical is? JWH018 was one thing but now that it and its analogues have been banned these chemists keep manipulating the formula to try and stay "legal". If you don't get better, try and find out what you ingested... Did anyone else have similar experience? Good luck to you my friend.