A unit dosage form, such as a capsule or the like for delivering drugs into the body in a circadian release fashion, is comprising of one or more populations of propranolol-containing particles (beads, pellets, granules, etc.). Each bead population exhibits a pre-designed rapid or sustained release profile...http://www.google.com.au/patents/US20040047906?utm_source=gb-gplus-sharePatent US20040047906 - Timed, sustained release systems for propranolol
