what is the difference between naproxen sodium and naproxen?
Naproxen is available as naproxen or naproxen sodium. The major difference between naproxen and naproxen sodium is that naproxen sodium is more rapidly absorbed. The body reaches peak levels of naproxen in 2–4 hours and naproxen sodium in 1–2 hours, meaning that it absorbs naproxen sodium faster than regular naproxen.