A correlation of the logarithmic values of the in vitro dissolution rate, G, and the apparent solubility, S, was evaluated in phosphate and ammonium acetate buffer at an initial pH of 7. The dissolution rates were determined with a newly designed and build miniaturized rotating disk equipment, as well as with a traditional rotating disk apparatus. The two apparatuses gave the same correlation p...

20(S)-Protopanaxadiol (PPD), a bioactive compound extracted from ginseng, possesses cardioprotective, neuroprotective, anti-inflammatory, antiestrogenic, anticancer and anxiolytic effects. However, the clinical application of PPD is limited by its weak aqueous solubility. In this study, we optimized an efficient method of preparing its phospholipid complex (PPD-PLC) using a central composite de...

Glimepiride (GMP) is poorly water soluble drug, so solubility is the main constraint for its oral bioavailability. The aim of this study was to investigate the potential of cubosomes as lipid nanocarrier to improve the solubility and sustained action of Glimepiride. Glimepiride is one of the third generation sulfonylureas used for treatment of type 2 diabetes. The rationale of this study was to...

 The physicochemical properties of the drug substance can assume a primary role in controlling its dissolution from the dosage form.  The aqueous solubility of the drug is one of the major factors that determine its dissolution rate.  Some studies concluded that the drug solubility data can be used as rough predictor of the possibility of any future problems with bioavailability.  Some of t...

Flutamide (FLT) is an antiandrogen drug for the treatment of prostate cancer. It has the drawback of poor water solubility and needs enhancement of its dissolution rate in simulated gastric fluids. Hence, it is prepared as self-nanoemulsifying drug delivery systems (SNEDDS) with an aim to enhance its dissolution rate. The objectives of the study are to develop SNEDDS of FLT and to characterize ...

Poorly solubility in water of many newly developed high-potential drugs is an obstacle in formulation development. The aim of this study was to increase the solubility of Lamotrigine which is a poorly soluble drug and comes under BCS class-II by using solid dispersion technique. Lamotrigine, PEG 4000 and PVPK-30 solid dispersion was prepared by solvent evaporation method and the formulation was...

aim: to enhance the aqueous solubility of olanzapine by using the solid dispersion technique. solid dispersions of olanzapine were prepared by the dispersion method using using pgs and ssg as carriers. drug:carrier ratios such as 1:1, 1:2, 1:4, 1:6, 1:8 and 1:10 were tried for optimization. characterization was done by phase solubility, in vitro release, saturation solubility, permeation, wetta...

Poorly water-soluble drugs such as nitrendipine (~2.0 μg/ml at 37C in water) offer challenging problems in drug formulation as poor solubility is generally associated to poor dissolution characteristics and thus to poor oral bioavailability. To enhance these characteristics, we prepared and evaluated nitrendipine nanosuspension using the nanoprecipitation technique. The important process parame...

Batch adsorption/dissolution experiments were conducted to examine the interactions between U(VI) and a synthetic aluminum oxyhydroxide (boehmite, γ-AlOOH) in 1.0M NaCl suspensions containing 1-hydroxyethane-1,1-diphosphonic acid (HEDPA). In the pH range 4 to 9, complexation of Al(III) by HEDPA significantly enhanced dissolution of boehmite. This phenomenon was especially pronounced in the neut...

Two experiments were conducted to evaluate factors affecting zona pellucida (ZP) solubility in bovine embryos during hatching in vitro. In Exp. 1, the relationship between blastocoelic expansion and ZP solubility was determined. Day-6 embryos (n = 42) with good or excellent quality grades were cultured (Cultured embryos), whereas embryos of fair quality (Not-cultured embryos) were immediately p...