Pain

- Healthy, ambulatory, male or female volunteers 18 to 40 years of age;
- Subjects will undergo surgical extraction of three or four third molars, two of which must be mandibular molars. Maxillary third molars may be removed regardless of impaction level. The mandibular extractions must have a trauma rating of mild or moderate and meet one of the following scenarios:
 -- two full bony impactions
 -- two partial bony impactions
 -- one full bony impaction in combination with one partial bony impaction
Supernumerary teeth present may also be removed at the discretion of the oral surgeon;
- Have not consumed alcoholic beverages, or foods and beverages containing caffeine (examples; coffee, tea, chocolate, and colas) after midnight prior to surgery and agree not to consume any of these foods or beverages throughout their stay at the study site;
- Use of only short-acting local anesthetic (e.g., mepivacaine or lidocaine) preoperatively, with or without a vasoconstrictor and nitrous oxide at the discretion of the Investigator;
- Have moderate to severe postoperative pain on the Categorical Pain Intensity Scale (a score of at least 2 on a 4 point scale) and a score of ≥ 5 on the 0-10 pain intensity NRS within 4.5 hours postsurgery;
- Ability to understand and follow study-related instructions;
- Be willing and able to participate in all scheduled visits, treatment plan, and trial procedures according to the clinical protocol;

- History of hypersensitivity to naproxen sodium, hydrocodone/acetaminophen, ibuprofen, NSAIDS, aspirin, similar pharmacological agents, local anesthetics, rescue medication or components of the investigational products;
- Evidence or history of clinically significant (in the judgment of the investigator) hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular (including hypertension), hepatic, psychiatric, neurologic diseases, or malignancies within the last 5 years;
- Subjects with the following medical conditions may be eligible at the discretion of the investigator: ADHD on a stable dose regimen of methylphenidate/(dextro)amphetamine for at least 6 months; subjects with hypothyroidism on a stable dose of synthetic thyroid hormone for at least 6 months;
- Have received any form of treatment in the form of medication for depression in the past 6 months or any form of psychotropic agent (including selective serotonin uptake inhibitors [SSRI] but excluding ADHD medications described above) within the last 6 months;
- Use of any OTC or prescription medications with which the administration of naproxen, hydrocodone/acetaminophen, acetaminophen, ibuprofen, any other NSAID, (e.g., tramadol) or if a medication is contraindicated;
- Females who are planning to become pregnant, pregnant or lactating;
- Habituation to analgesic drugs including opioids (i.e., routine use of oral analgesics 5 or more times per week for greater than 3 weeks within the past 2 years);
- Alcoholism or drug abuse within 2 years prior to the Screening Visit or routine consumption of 3 or more alcohol containing beverages per day; Alcohol containing beverages are defined as one beer (5%), one glass of wine (11%) and one shot (40%) hard liquor;
- Surgeon’s trauma rating of severe following surgery;
- Unwilling or unable to comply with all requirements outlined in the protocol;