Efficacy and Safety Study of a Test Naproxen Sodium 220mg Tablet in Postoperative Dental Pain

This is a single-dose, randomized, double-blind, placebo- and active- controlled,
parallel-group study to evaluate the analgesic onset, efficacy, and safety profile of 440 mg
of naproxen sodium administered as two Test NPX 220 mg tablets compared with two commercial
products and placebo over a twelve-hour period after third-molar extractions. Subjects will
undergo dental extraction of three or four third molars.

Inclusion Criteria:

1. 17 - 50 years old

2. Weigh 100 pounds or greater and have a body mass index (BMI) of 17.5 to 30.4
(inclusive) at screening

3. Dental extraction of three or four third molars

4. Meets post-surgical pain

5. Females of childbearing potential and males agree to contraceptive requirements of
study

6. Have a negative urine drug screen at screening, and on day of surgical procedure

Exclusion Criteria:

1. Pregnant female, breastfeeding, trying to be pregnant or male with pregnant partner or
partner currently trying to become pregnant

2. Have a known allergy or hypersensitivity to naproxen or other NSAIDs, including
aspirin, or to acetaminophen, hydrocodone or other opioids

3. Not able to swallow large tablets or capsules

4. History of any condition (s) in investigator's opinion, may jeopardize subject safety,
well-being and integrity of study

5. Use analgesics 5 or more times per week

6. History of chronic tranquilizer use, heavy drinking, substance abuse as judged by
investigator site staff within last 5 years

7. Use of immunosuppressive drugs within 2 weeks of screening

8. History of endoscopically documented peptic ulcer disease or bleeding disorder in last
2 years