Over the past 30 years as the expense and complications involved in marketing new drug entities have increased, with concomitant recognition of the therapeutic advantages of controlled drug delivery, greater attention has been focused on development of sustained or controlled release drug delivery systems. Bilayer tablet is new era for the successful development of controlled release formulatio...

The gastroretentive dosage forms have potential for use as controlled-release drug delivery systems. The use of floating dosage forms is one method to achieve prolonged gastric residence times, providing opportunity for both local and systemic drug action. The present investigation involve the development and in vitro evaluation of the floating matrix tablets, which after oral administration ca...

The rapid release from a double-compressed tablet containing theophylline with the water-soluble polymer, hydroxypropylmethylcellulose (HPMC) or hydroxypropylmethylcellulose phthalate (HPMCP), used as a wall material can be suppressed by argon plasma-irradiation and changed into the sustained-release system due to a decrease in solubility of the outer layer. It was shown that the release profil...

it has been observed that most of the chemical entities have high lipophilicity and poor aqueous solubility, which result in poor bioavailability. in order to improve the bioavailability, the release behavior of such drugs should be improved. although there are numerous techniques to handle solubility related issue, but they are expensive due to involvement of complicated equipments, advanced m...

terbutaline sulfate exhibits extensive first pass metabolism and a short elimination half life which makes frequent oral administration of the drug inevitable. a novel buccoadhesive controlled delivery system of the drug can easily overcome the problem. a two-layered core tablet composed of a fast release layer made of mannitol, lactose, peg and the drug attached to a sustained release layer co...

Objective: The recent study's objective was to optimize and formulate a controlled-release gastro-retentive floating tablet of RG using central composite design, which provides continuous release Repaglinide for up 24 h. Methods: (RG-GRF Tablet) prepared by direct compression method. optimization carried out three-factor three-level Central Composite design. amount Eudragit RSPO (A), HPMC K-100...

DIETHYLPROPION ("Tenuate") has been shown to be useful in the treatment of refractory obesity (Seaton et al., 1961). Appetite suppression with the standard preparation is reported to last about four hours (Spielman, 1959) and the drug must be taken at least three times daily. This paper reports the use of a longacting preparation of the drug, which need be taken only once a day. It is marketed ...

The bioavailability of a generic diclofenac sodium sustained release tablet preparation (Zolterol, SR) was compared with the innovator product, Voltaren, SR. Twelve healthy adult male volunteers participated in the study, which was conducted according to a randomized, two-way crossover design with a wash out period of one week. The bioavailability of diclofenac was compared using the parameters...

[This retracts the article on p. 137 in vol. 5, PMID: 24966835.].