What Does Clorzoxazone Show On A Test

Is it a narcotic and does it have codine in it?

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Hi Lou,

From what I could gather, Chlorzoxazone in and of itself is a centrally acting muscle relaxant and should show up accordingly on a drug test.

Although there are certain brand names such as Muscol or Parafon Forte that contain a combination of Chlorzoxazone + Acetaminophen, there wouldn't be any narcotics to speak of.

Learn More: Chlorzoxazone Details

Hope this helps!

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