Conditions: Upper Back Pain
Keywords: upper back/neck/shoulder muscle spasm
Allocation: RANDOMIZED | Intervention model: SINGLE_GROUP
Enrollment: 78
Healthy volunteers: no

Brief summary:
Explore the clinical efficacy of 7-day treatment regimens of guaifenesin in order to investigate the evidence that guaifenesin is an effective treatment for upper back/neck/shoulder muscle spasm/stiffness and pain.

Detailed description:

Arms:
arm 1: Guaifenesin 1 tablet BID arm 2: Guaifenesin 2 tablets BID arm 3: Placebo 1 tablet BID arm 4: Placebo 2 tablets BID

Interventions: intervention 1: Guaifenesin intervention 2: Placebo
Intervention descriptions: intervention 1: high and low dose of Guaifenesin each given twice daily over a 4-day treatment period intervention 2: no active ingredient

Protocol document: