Barium sulfate (barite) is one of the widely used weighting materials in the preparation of drilling fluid for deep oil and gas wells. Barite is not soluble in the regular solvents; such as, hydrochloric acid (HCl) and other acids. Therefore, in this study, we focused on evaluating the dissolution of the industrial barite particles in different chelating agents. Chelating agents; such as, dieth...

The objective of this study was to evaluate and compare the effect of four superdisintegrants such as croscarmellose sodium (Ac-Di-Sol), crospovidone (Kollidon CL and with smaller particle sizes Kollidon CL-F), sodium starch glycolate (Explotab) in combination with β-lactose and microcrystalline cellulose (Avicel PH-102) as base excipients exhibiting properties of directly compressed tablets an...

The purpose of this study was to develop a suitable dissolution test for feverfew products and to investigate the parthenolide content, disintegration, and dissolution performance of several marketed feverfew products. Parthenolide content was determined by a validated HPLC method. Disintegration was tested according to the USP requirements for botanical dosage forms. A suitable dissolution tes...

Electrospun fiber mats are currently gaining attention as advanced drug delivery systems. Dissolution testing for such systems is generally performed in small vials by immersing the fiber mats in buffered solutions. Defined aliquots of dissolution medium are withdrawn at predefined time points, and the dissolved drug is quantified. However, this procedure is associated with several drawbacks. T...

Poor aqueous solubility is a major challenge for the drug development process, and many strategies have been developed to combat this problem. Cocrystals have gathered much interest in the recent years, due to their ability to enhance drug solubilities by orders of magnitude. However, highly soluble cocrystals tend to undergo rapid solution mediated transformation back to less soluble drug form...

Efavirenz belongs to Class II under BCS and exhibit low and variable bioavailability due to its poor aqueous solubility. As such it needs enhancement in the dissolution rate and bioavailability to derive its maximum therapeutic efficacy. The objective of the present investigation is to study the complexation of efavirenz with two cyclodextrins, βcyclodextrin (βCD) and hydroxypropyl β-cyclodextr...

glibenclamide (glib) is a poorly soluble drug with formulation-dependent bioavailability. therefore, we attempted in this study to improve glib dissolution rate by preparing drug solid dispersions by solvent evaporation (se) and supercritical fluid solvent-antisolvent techniques (scf-sas). a d-optimal mixture design was used to investigate the effects of different ratios of hpmc e5 (50-100%), p...

PURPOSE: For poorly soluble, highly permeable (Class II) drugs, such as indomethacin, the rate of oral absorption is often controlled by the dissolution rate in the gastrointestinal tract. Therefore together with the permeability, the solubility and dissolution behaviour of a drug are key determinants of its oral bioavailability. The object of the present study is to increase dissolution rate o...

AIMS The experience of a compromised sense of "self", termed ego-dissolution, is a key feature of the psychedelic experience. This study aimed to validate the Ego-Dissolution Inventory (EDI), a new 8-item self-report scale designed to measure ego-dissolution. Additionally, we aimed to investigate the specificity of the relationship between psychedelics and ego-dissolution. METHOD Sixteen item...