| 摘要 |
The present invention relates to compositions and methods of treating human subjects with a beta-adrenergic receptor blocking agent ("beta-blocker") provided in a time-sustained-release delivery system. The time-sustained-release drug delivery systems includes at least three populations of beads, where each population of beads includes a beta-blocker. The beads may be selected from immediate-release beads, enteric-release beads, sustained-release beads, and time-sustained-release beads. The beta-blocker may be selected from acebutolol, atenolol, betaxolol, bisoprolol, esmolol, metoprolol, nebivolol, butoxamine, carteolol, carvedilol, labetalol, nadolol, oxprenolol, penbutolol, propranolol, pindolol, sotalol, and timolol. According to presently preferred embodiments, the beta-blocker is propranolol. The dosage forms of the present invention are useful for treating conditions including hypertension, angina pectoris due to coronary atherosclerosis, hypertrophic subaortic stenosis, congestive heart failure, arrhythmias, angina, anxiety, glaucoma, migraines, esophageal varices, alcohol withdrawal syndrome, irregular heartbeat, tachycardia, tremor, and neuroleptic-induced akathisia. They are also useful in the prophylaxis of migraine headaches.
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