Clinical Trial 45957

Long Beach, CA 90806


This is a double-blind, randomized, placebo-controlled, multicenter study of the efficacy and safety of tolperisone (a non-opioid) or placebo administered in subjects with pain due to acute back muscle spasm.

  • Be ambulatory
  • Current acute back pain due to acute muscle spasm starting within 7 days prior to study entry (Day 1) and at least 8 weeks following resolution of the last episode of acute back pain.
  • Willingness to discontinue all previous or ongoing treatment of pain or muscle spasm on study entry at Day 1 through the end of treatment including medication, acupuncture, chiropractic adjustment, massage, transcutaneous electrical nerve stimulation [TENS], or physiotherapy.
  • Pain must be localized from the neck (C-3 or lower) to the inferior gluteal folds and spasm assessed during the Screening physical examination.
  • Body mass index range between 18 and 35 kg/m², inclusive.

Qualified Participants May Receive:

Compensation up to $600 over the study length (14 days).

Available At:

Collaborative Neuroscience Research, LLC

Long Beach, CA 90806
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If you or someone you care for is interested in participating and lives within 50 miles of the location shown, please complete the form below and click 'Submit'

Clinical trials are medical research studies designed to test the safety and/or effectiveness of new investigational drugs, devices, or treatments in humans. These studies are conducted worldwide for a range of conditions and illnesses. Learn more about clinical research and participating in a study at About Clinical Trials.