This is a troubling development for a few reasons. Of course, we already know that Xylazine is contanimating drugs beyond just the Opioid supply. It has been found in everything from dope, to Cocaine, to Meth and even (now this is not something I would worry about) Cannabis. We know that Xylazine is really not fit for human consumption. In short, it would seem that this drug is known to be highly poisonous/corrosive. This is "acceptable" when you're dealing with livestock that will likely not live for longer than a few years. Humans can live for 100 years. We have people using Xylazine for the same amount of time that a livestock animal will live.
For those who are not yet aware, Xylazine is an A2 adrenergic receptor agonist. For the sake of reference, Clonidine (Catapres) is also an agonist of the same family. The two substances lower blood pressure and to a lesser extent, pulse rate dependent upon dosage. Being that these drugs are antihypertensive agents, tolerance to said drugs leads to a dependency upon the drug for the maintenance of homeostasis. As we know from general laws of pharacology, if you will, the human body is not limited in its ability to become tolerant to and adapt to the presence of drugs. Follow me here.
If a person is sufficiently tolerant to either of these drugs, sudden withdrawal from high doses can produce Hypertensive Crisis. This is typically experienced as a sensation of extreme physical tension accompanied by feelings of sheer panic, temperature insensitivity and a general breakdown in a person's functionality. People who are out there heavily using these combination dope products faces a twin withdrawal of both Fentanyl and Xylazine. Think if a miserable hell were merged with the feeling of your ribcage being squeezed in a vice while you consistently feel like you're about to have a heart attack. That's neither here nor there though.
Methamphtamine as a powerful central nervous system stimulant is paired greatly with Xylazine from a business perspective. Methamphetamine users are often trying to shed the excess body load and tension as a result of high dose usage. Xylazine and/or Clonidine is a logical addition for anyone trying to achieve this. The issue is, as a person uses higher and higher quantities of Meth laced with Xylazine, they could be completely unaware of what is happening behind the scenes to their circulatory system.
The same amount of Xylazine that would easily knock another person out might only cause transient subjective feelings in a Methamphetamine user. Once the Xylazine intake stops, they are then left with a massive tolerance to the Xylazine. The withdrawal from Xylazine is stated to come on rapidly. It is not out of the question to think that a person could have a sudden attack of hypertension that would leave them potentially on the floor or worse.
This is something we really need to keep following. I would advise everyone to test their drugs. There is a good reason for a dealer to include Xylazine in their stimulant drugs, so I'm not surprised that they do. Good information.