Administration design of Theolong, a sustained release preparation of theophylline.
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چکیده
منابع مشابه
Theophylline-Ethylcellulose Microparticles: Screening of the Process and Formulation Variables for Preparation of Sustained Release Particles
Objective(s) The aim of this study was to formulate and evaluate microencapsulated controlled release preparations of theophylline using ethylcellulose as the retardant material with high entrapment efficiency. Materials and Methods Microspheres were prepared by water-in-oil-in-oil (W/O1/O2) emulsion-solvent diffusion (ESD). A mixed solvent system consisting of acetonitrile and dichloromet...
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Introduction: More than one-third of women experience abnormal uterine bleeding (AUB) during their lifetime. One of the treatment methods of this disease is hormone therapy. Vaginal rings (VRs) containing progesterone hormones could be a good choice for treatment. In this study, the design and construction of a reservoir ring with the ability to release levonorgestrel hormone has been investiga...
متن کاملtheophylline-ethylcellulose microparticles: screening of the process and formulation variables for preparation of sustained release particles
objective(s) the aim of this study was to formulate and evaluate microencapsulated controlled release preparations of theophylline using ethylcellulose as the retardant material with high entrapment efficiency. materials and methods microspheres were prepared by water-in-oil-in-oil (w/o1/o2) emulsion-solvent diffusion (esd). a mixed solvent system consisting of acetonitrile and dichloromethane ...
متن کاملRelease of Theophylline from Sustained Release Cylindrical Dosage Forms
The holt-melt extrusion technique has proven to be an advantageous method for preparation of solid dosage forms. The aim of this work was to evaluate the release profiles of sustained release cylinders produced by hot-melt extrusion. The cylinders were composed of inner and outer part, both containing theophylline [1]. Cylinders were 0.5cm or 1cm long. The two parts were extruded separately, cu...
متن کاملpreparation and evaluation of a liquid sustained-release drug delivery system for theophylline using spray-drying technique
in recent years, great efforts have been devoted to the design of drug delivery systems. many polymeric excipients have been studied in order to make drug release fit the desired profiles. the aim of this work was to design a theophylline oral suspension, as sustained release pharmaceutical preparation in order to decrease the plasma level fluctuations and adverse effects of theophylline. micro...
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ژورنال
عنوان ژورنال: Rinsho yakuri/Japanese Journal of Clinical Pharmacology and Therapeutics
سال: 1990
ISSN: 1882-8272,0388-1601
DOI: 10.3999/jscpt.21.187