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1. An immediate release solid dosage form comprising an intragranular portion and a carbonate portion, wherein the intragranular portion comprises 220 mg naproxen sodium, as well as compression filler, binder and disintegrant, wherein the carbonate portion comprises an effective amount of soluble carbonate at a particle size from about 50 microns to 200 microns so as to raise the pH and facilitate dissolution and absorption of the naproxen sodium to begin in a human's stomach in a fasted state, wherein the particle size of the intragranular portion is from about 200 microns to 400 microns, wherein the immediate release solid dosage form provides a blood plasma naproxen concentration of at least 15-20 μg/ml in 10 minutes or less, and wherein the solid dosage form does not include any other drug besides naproxen sodium.
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