Conditions: Pain Fibromyalgia
Keywords: Pain Fibromyalgia Ultracet Tramadol Hydrochloride Acetaminophen
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 80
Healthy volunteers: no

Brief summary:
The purpose of this study is to evaluate the analgesic effect of combination of tramadol hydrochloride and acetaminophen in participants for treatment of fibromyalgia pain (chronic widespread pain and presence of tender points).

Detailed description:
This is an open-label (all people know the identity of the intervention) and multi-center (conducted in more than one center) study of combination of tramadol hydrochloride and acetaminophen in treatment of participants with pain of fibromyalgia. The duration of this study will be 56 days per participant. The study consists of 2 parts: Screening (that is, 3 weeks before study commences on Day 1) and Treatment (that is, up to Day 56). All the eligible participants will receive oral tablet for combination of tramadol hydrochloride and acetaminophen. Rescue medication (a medication intended to relieve symptoms immediately) of tylenol (500 milligram, up to 6 oral tablets daily) will be permitted throughout the study duration. Efficacy of the participants will primarily be evaluated by Pain Visual Analog Scale. Participants' safety will be monitored throughout the study.

Arms:
arm 1: Tramadol hydrochloride/acetaminophen oral tablet will be administered as 37.5 /325 milligram respectively once daily for Day 1-3, twice daily for Day 4-6 and thrice daily for Day 7-56.

Interventions: intervention 1: Tramadol hydrochloride intervention 2: Acetaminophen
Intervention descriptions: intervention 1: Tramadol hydrochloride oral tablet will be administered at a dose of 37.5 milligram as, once daily for Day 1-3, twice daily for Day 4-6 and thrice daily for Day 7-56. intervention 2: Acetaminophen oral tablet will be administered at a dose of 325 milligram as, once daily for Day 1-3, twice daily for Day 4-6 and thrice daily for Day 7-56.

Protocol document: