Methocarbamol, sold under the brand name Robaxin, is a muscle relaxant prescribed to relieve muscle spasms and pain. It functions by depressing the central nervous system. Standard drug screenings primarily target substances such as opioids, amphetamines, benzodiazepines, cocaine, and marijuana. These tests are designed to identify commonly abused substances and those with a high potential for impairment.
The primary focus of workplace and legal drug testing is to detect substances that could impact job performance, safety, or violate legal standards. Because methocarbamol is not typically considered a substance of abuse and does not cause significant impairment in most individuals, it is generally not included in standard drug screening panels. Historically, drug testing has evolved to concentrate on illicit drugs and prescription medications with known abuse potential.