If you are on the fence about trying this, don't. If you have some, flush it.
My friend ODed on this with a probable combo of etiz, maybe something else. I don't think he took a massive dose either.
I found him nonresponsive and administered narcan, which worked to counter the u47 effects. At the hospital he was admitted to the ICU because his liver labs were a mess. He has spent the past few days in the hospital watching his labs. It's looking like he will be ok but holy shit. He suffered acute liver toxicity.
This does not fully prove that U47 is harmful to the liver but how many people have gotten labs done right after ingesting this crap? I have done a little and I defintely noticed a toxic feel after it wears off. With the now multiple reported ODs and the possibility that this is toxic to the liver, it's not worth it.
Flush this shit, it is garbage.