Newer better studies show that relaxant drugs have no good evidence of effectiveness for low back pain, while having possible significant
adverse effects especially for people operating machinery. Multiple clinical trials have found that skeletal muscle relaxants are associated with 50 percent more total adverse events and 104 percent more central nervous system adverse events than placebo.
A recent randomized controlled trial showed that spinal manipulation as commonly practiced by doctors of chiropractic had significantly more effect on pain reduction that muscle relaxants or placebo.
Muscle Relaxants vs. Manipulations for LBP
