Since I can barely be convinced to take an OTC ASPIRIN, I was TERRIFIED upon finding out about these new drugs being used as, basically, "filler" for heroine and fentanyl!!! With sadness, hopelessness, homelessness, unemployment, and chronic health disruptions at an all-time high, some people--including those who were prescribed various pain medications--- end up on the losing end of these substances..
PLEASE... If you know of anyone who is currently using, WARN THEM that these drugs are being used to "cut" the supply!!!! These drugs were not meant to be used with humans, and cause ulcerative wounds THAT RESULT IN AMPUTATIONS...
This site reaches multiple THOUSANDS of people, from all over, and putting this information out could potentially save lives. Hopefully, they'll hear your words and decide a high just might not be worth AN ARM OR A LEG, OR BOTH. 
I'm soooo sick after seeing this. Please warn ANYONE you know who is currently using... Please..