Single/Multiple Dose Bioavailability Trial

An Open Label, Randomized, Two-Way Crossover Trial to Determine the Pharmacokinetic Profile of an Extended Release Naproxen Sodium Tablet Relative to Aleve Tablets Following Single and Multiple Dose Administration in Healthy Adult Subjects

To determine the pharmacokinetic profile of an extended release tablet of naproxen sodium 660 mg relative to the established commercial Aleve 220 mg tablet following single dose administration and at steady-state following multiple dose administration for 4 days.

Inclusion Criteria:

• Healthy, ambulatory, male and female volunteers between 18 - 55 years of age with BMI of approximately 18 to 30 kg/m2, and total body weight >50 kg (110Ibs)

Exclusion Criteria:

• History of hypersensitive to aspirin (ASA), naproxen sodium, or acetaminophen, and similar pharmacological agents or components of the products
• History of gastrointestinal bleeding or perforation related to previous Non-Steroidal Anti-Inflammatory Drug (NSAID) therapy Active, or history of current peptic ulcer/hemorrhage (two or more distinct episodes of proven ulceration or bleeding)
• Have taken ASA, ASA-containing products, acetaminophen (acetyl-para-amino-phenol or APAP) or any other NSAID (OTC or prescription) 7 days prior to dosing or during the treatment period, other than study treatment