A Study Comparing the Effectiveness and Safety of ULTRACET® (Tramadol HCl/Acetaminophen) Versus Placebo for the Treatment of Acute Pain From a Migraine Headache

A Study Comparing the Effectiveness and Safety of ULTRACET® (Tramadol HCl/Acetaminophen) Versus Placebo for the Treatment of Acute Pain From a Migraine Headache

A Comparison of the Efficacy and Safety of ULTRACET® (Tramadol HCl/Acetaminophen) Versus Placebo for the Acute Treatment of Migraine Headache Pain

The purpose of this study is to evaluate the effectiveness and safety of tramadol HCl/acetaminophen as a pain medication compared with placebo in the treatment of acute pain from a migraine headache. Although tramadol HCl/acetaminophen is approved to treat acute pain, it is not approved for the treatment of acute pain associated with migraine headache. The study hypothesis is that tramadol HCl/acetaminophen is safe and effective as a pain medication in the treatment of acute pain associated with a migraine headache.

Although new drugs and procedures are available to treat acute migraine pain, inadequacies in treatment still exist. The ingredients in tramadol HCl/acetaminophen tablet and the way it works may be effective in the treatment of the pain of acute migraine headache. The combination of tramadol HCl/ acetaminophen works faster than tramadol alone and lasts longer than acetaminophen alone. This is a multicenter, single-dose, outpatient, randomized (study with two groups one in treatment and one control group), double-blind (neither patient nor investigator knows which patient is receiving study drug or control treatment), placebo-controlled, parallel-group (each group receives only one type of treatment) study of adult patients who experience at least moderate pain from migraine headaches. After being randomly assigned to a group patients will leave the study center with one dose (2 tablets) of study medication, either active treatment or placebo. The next time the patient has a migraine headache of at least moderate pain, the patient will take the study medication and start to answer questions about their headache pain and pain relief in a study diary. Patients should return to the study center within 72 hours of taking this dose. The study hypothesis is that tramadol HCl/acetaminophen is safe and effective as a pain medication in the treatment of acute pain associated with a migraine headache. 2 tramadol HCl (37.5 milligrams)/acetaminophen (325 milligrams) combination tablets or 2 matching placebo (inactive substance) tablets for tramadol HCl/acetaminophen taken one time orally

Change in baseline headache pain severity at 2 hours post-dose from severe or moderate to mild or none, without using any nausea medication or other pain medication

Pain free at 2, 6 and 24 hrs post-dose; difference in pain intensity and response to therapy over the first 6 hrs post-dose; reduction in occurrence and severity of symptoms; change in functional disability; subject overall rating of change.

Inclusion Criteria: Patient with a history of diagnosis of migraine with or without a warning sign (aura), that meets the criteria for a migraine, for at least 1 year History of migraine pain at least moderate in intensity Incidence of 1 to 6 headaches per month in the past year If female, using acceptable method of birth control Exclusion Criteria: Patients with routine headaches that could be confused with migraines No more than 13 headache days per month in the past 6 months Onset of migraines after age 50 Patients with migraines involving the eyes, chronic migraine or cluster headaches Patients using one or more of the following medications before study entry: more than 1 type of migraine prevention medicine in the past 6 weeks, tramadol within 30 days, vitamins/herbal remedies or non-drug-related remedies for migraine for < 30 days, St. John's Wort within 30 days, investigational drug in past 30 days or any other disallowed medications

Silberstein SD, Freitag FG, Rozen TD, Kudrow DB, Hewitt DJ, Jordan DM, Fisher AC, Rosenthal NR; CAPSS-223 Investigators. Tramadol/acetaminophen for the treatment of acute migraine pain: findings of a randomized, placebo-controlled trial. Headache. 2005 Nov-Dec;45(10):1317-27. doi: 10.1111/j.1526-4610.2005.00264.x.

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A Comparison of the Efficacy and Safety of ULTRACET® (Tramadol HCl/Acetaminophen) versus Placebo for the Acute Treatment of Migraine Headache Pain