Naproxen tablets with controlled drug delivery

摘要

Programmed release tablets, to be administered by oral route, containing from 500 to 1,200 mg of naproxen, made by mixtures of an immediate release granulate dry compacted containing from 5% to 28% of naproxen, of a controlled release granulate dry compacted containing from 72% to 95% of naproxen and of a disintegrating agent. A portion of naproxen is released in a short time, so that the drug can quickly develop its therapeutic action reaching the necessary hematic levels, while the remaining portion is released in a longer interval of time, so as to allow the therapeutic coverage till the subsequent administration. The therapeutic coverage is effective for a period of 24 hours; thus the tablets object of the present invention are suitable for a once a day administration.