SIOUX FALLS, S.D.(KELO)- It’s one of the deadliest drugs to ever hit the market…and right now, it’s completely legal.

That’s just part of the problem with Xylazine…the so-called “Zombie Drug”.

It earned that title because of some of its horrific side effects.

Sheriff Mike Milstead.

Sheriff Milstead and Attorney General Marty Jackley want to see it become a controlled substance in South Dakota.

It’s one of the deadliest drugs to ever hit the market…and right now, it’s completely legal.

Xylazine is cheap, and it’s an important tranquilizer used by veterinarians.

Milstead and other law enforcement and prosecutors want the legislature to make it a controlled substance.