Enhanced Aqueous Solubility of the Solid Forms of a BCS Class-II Anti-Tuberculosis Drug, Prothionamide

2020 ◽  
Vol 20 (8) ◽  
pp. 5086-5096 ◽  
Author(s):  
S. Amrutha ◽  
Lopamudra Giri ◽  
Sunil SeethaLekshmi ◽  
Sunil Varughese
Keyword(s):  
Aqueous Solubility ◽  
Class Ii ◽  
Bcs Class Ii

scholarly journals PREPARATION, CHARACTERIZATION AND DISSOLUTION STUDY OF SPRAY DRIED SOLID DISPERSIONS OF SIMVASTATIN WITH PVP K25 AND AEROSIL 200

2021 ◽  
Vol 10 (6) ◽  
pp. 3806-3812
Author(s):  
Pritam Singh
Keyword(s):  
Drug Release ◽  
Spray Drying ◽  
Solid Dispersions ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Drying Method ◽  
Bcs Class Ii ◽  
Enhanced Dissolution ◽  
Amorphous Nature ◽  
Characterization Studies

BCS class II is well-known for the drugs, having poor aqueous solubility and high permeability. Simvastatin is also categorized as BCS class II, suffering from poor aqueous solubility, affecting its bioavailability. In an attempt to resolve this problem, solid dispersions of simvastatin were prepared by spray-drying method. Solid dispersions of simvastatin with PVP K25 and aerosol in ratio (1:1:1 to 1:5:1) and without aerosil 200 (1:1 to 1:5) were prepared by spray drying method. The dissolution test showed the enhancement of dissolution as compared to the pure drug and nearly equal to marketed formulation “SIMVOTIN 20mg” in both types of formulation, but formulations with aerosil 200 showed faster drug release as compared to the simple formulations without aerosil. The formulation containing the 1:3:1 (simvastatin: PVP K25: Aerosil 200) showed the faster drug release as compared to other formulation that do not contain the Aerosil 200. Other characterization studies were also performed such as FTIR, differential scanning colorimetry and powdered X-ray crystallographic studies. These studies showed the increased amorphous nature of the drug in the formulation, which explain the enhanced dissolution rate of the drug for these formulations.

scholarly journals Formulation Development and Evaluation of Liposphere of Poor Water Soluble Drug for Hyperlipidemia

2021 ◽  
Vol 11 (2) ◽  
pp. 23-30
Author(s):  
Anil Kumar ◽  
Umesh K. Jain ◽  
Ajay Patel
Keyword(s):  
Drug Release ◽  
Stearic Acid ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Water Soluble ◽  
Fibric Acid Derivative ◽  
Formulation Development ◽  
Bcs Class Ii ◽  
Paraffin Oil

Lipospheres offer a new approach to improve an aqueous solubility of BCS class-II drugs. Simvastatin is a third generation fibric acid derivative belonging to this class, employed clinically as a hypolipidemic agent to lessen the risk caused by atherosclerosis. An attempt was made to improve aqueous solubility of Simvastatin by aid of stearic acid and Paraffin oil. The factorial batches of the Simvastatin lipospheres were formulated by melt dispersion technique using 32 factorial design with variables X1- concentration of stearic acid and X2- concentration of paraffin oil and responses Y1 - % Drug Entrapment (% DE) and Y2 - % Drug Release (% DR). From the surface response graphs the optimized batch was formulated and evaluated for saturation solubility, in-vitro drug release studies. Significant improvement in the aqueous solubility of the drug in the Simvastatin lipospheres supports the applicability of lipospheres as a tool for improving aqueous solubility of the BCS class-II drugs. Keywords: Linospheres; Simvastatin; Drug release; Hyperlipidemic; Drug entrapment.

scholarly journals Cellulosic Polymers for Enhancing Drug Bioavailability in Ocular Drug Delivery Systems

2021 ◽  
Vol 14 (11) ◽  
pp. 1201
Author(s):  
Bharti Gupta ◽  
Varsha Mishra ◽  
Sankalp Gharat ◽  
Munira Momin ◽  
Abdelwahab Omri
Keyword(s):  
Drug Delivery ◽  
Drug Delivery Systems ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Delivery Systems ◽  
Solubility Enhancement ◽  
Ocular Drug Delivery ◽  
Drug Bioavailability ◽  
Bcs Class Ii ◽  
Cellulosic Polymers

One of the major impediments to drug development is low aqueous solubility and thus poor bioavailability, which leads to insufficient clinical utility. Around 70–80% of drugs in the discovery pipeline are suffering from poor aqueous solubility and poor bioavailability, which is a major challenge when one has to develop an ocular drug delivery system. The outer lipid layer, pre-corneal, dynamic, and static ocular barriers limit drug availability to the targeted ocular tissues. Biopharmaceutical Classification System (BCS) class II drugs with adequate permeability and limited or no aqueous solubility have been extensively studied for various polymer-based solubility enhancement approaches. The hydrophilic nature of cellulosic polymers and their tunable properties make them the polymers of choice in various solubility-enhancement techniques. This review focuses on various cellulose derivatives, specifically, their role, current status and novel modified cellulosic polymers for enhancing the bioavailability of BCS class II drugs in ocular drug delivery systems.

Molecular salts of quinine. A crystal engineering route to enhance the aqueous solubility

CrystEngComm ◽  
2021 ◽  
Author(s):  
Indira S Divya ◽  
Amrutha Surendran ◽  
Sunil SeethaLekshmi ◽  
Sunil Varughese
Keyword(s):  
Crystal Engineering ◽  
Classification System ◽  
Dicarboxylic Acids ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Bcs Class Ii ◽  
Molecular Salts ◽  
Aliphatic Dicarboxylic Acids ◽  
Biopharmaceutical Classification System

The anti-malarial drug quinine (QUN) has poor aqueous solubility and belongs to Biopharmaceutical Classification System (BCS) Class-II. We report 12 novel molecular salts of QUN with α,ω-aliphatic dicarboxylic acids, and...

scholarly journals Development of Fenofibrate Solid Dispersions for the Plausible Aqueous Solubility Augmentation of this BCS Class-II Drug

2021 ◽  
Vol 13 (10) ◽  
pp. 107-116
Author(s):  
Purushottam S. Gangane ◽  
Vaibhav M. Mule ◽  
Debarshi Kar Mahapatra ◽  
Nilesh M. Mahajan ◽  
Harigopal S. Sawarkar
Keyword(s):  
Solid Dispersions ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Bcs Class Ii

scholarly journals Development, characterization and solubility enhancement of BCS class II drug phenytoin by solid phospholipid dispersion technique

2020 ◽  
Vol 11 (1) ◽  
pp. 403-410
Author(s):  
Veera Venkata Satyanarayana Reddy Karri ◽  
Sathish Ananthan ◽  
Lavanya Mude
Keyword(s):  
Freeze Drying ◽  
Dosage Form ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Oral Dosage ◽  
Bcs Class Ii ◽  
The Poor ◽  
Phospholipid Nanoparticles ◽  
Model Drug ◽  
Form Development

The poor aqueous solubility acts as a core challenge in oral dosage form development for BCS class II drugs. Phenytoin is taking as a model drug; the present study adopted an innovative solid phospholipid nanoparticle (SPLN) line of attack, and it is parallelly equated with the industrialized methods (freeze-drying) which are used for the boosting of solubility and dissolution of Phenytoin. Phenytoin was articulated along with phospholipid and mannitol at a diverse ratio of phenytoin, PL, mannitol, in which 1:12:18 was the correct ratio for ideal preparation. Freeze-drying helps to prepare SPLNs in orbicular shape, which is amorphous in nature with ≤ 1µm diameter on average. While the amorphous matrix-like structure of solid phospholipid dispersion with larger particle size is obtained by freeze-drying technique. Formulating the formulation from this method improved the dissolution rate in a remarkable way. Tris buffer with pH 7.4acts as an apparent solubility dissolved concentration of phenytoin. The poor aqueous solubility acts as a core challenge in oral dosage form development for BCS class II drugs. The decrease in the particle size or cumulating the drug surface area is the widely used practices to proliferate the solubility. The target of the present work was improvisation in solubility, dissolution of a poorly water-soluble drug, and its release by using solid phospholipid nanoparticles. Phenytoin is taking as a model drug. The solid phospholipid nanoparticles were primed by freeze-drying technique along with phospholipid and mannitol in diverse drug to excipients ratios (1:1, 1:2w: w). These preparations were assessed for compatibility study using FTIR, solubility enhancement study by XRD, entrapment efficiency, surface morphology by SEM, and in-vitro release study. As per the results, there is no influence of the excipients on the drug used. The solubility was increased by folds compared to in house prepared formulation. 

NATEGLINIDE SILICA LIPIDHYBRID PARTICLES FOR IMPROVED SOLUBILITY

INDIAN DRUGS ◽  
2020 ◽  
Vol 57 (06) ◽  
pp. 73-78
Author(s):  
Shradha Tiwari ◽  
Shailesh Wadher ◽  
Surendra Gattani
Keyword(s):  
Oral Delivery ◽  
Porous Silica ◽  
Aqueous Solubility ◽  
Class Ii ◽  
Water Soluble ◽  
Bcs Class Ii ◽  
Enhanced Solubility ◽  
Ft Ir ◽  
Tablet Dosage ◽  
Highly Porous

Porous silica-based drug delivery systems have shown substantial potential for improving the oral delivery of poorly water-soluble drugs.The major problem with nateglinide, a BCS Class II drug, is pHdependent solubility, limited aqueous solubility, poor dissolution and variable bioavailability. The aim of the present investigation was to develop a lipid-based solid formulation of nateglinide, as a strategy to improve both the solubility and the dissolution rate of the drug in a tablet dosage form. The silica lipid hybrid (SlH) particles were formulated using Miglyol812 and Acrysol el 135 as liquid lipid vehicles as well aslabrasol and Transcutol HP as surfactants.Nateglinide was dissolved in different lipids and later adsorbed on highly porous silica Sylloid PF244 to obtain free-flowing powders. The prepared nateglinide SlH was characterized by FT-IR, DSC, and XRD.Nateglinide SlH was evaluated for solubility and dissolution. SlH of NTG prepared with Miglyol 812 and Transcutol HP enhanced solubility of NTG 57.21 fold. From the study, it may be concluded that the oral solid lipid-based formulation, SlH has an improved potential for enhancing solubility and dissolution of BCS class II drugs like nateglinide.

Formulation and Characterization of Glimepiride Nanoparticles for Dissolution Enhancement

2020 ◽  
Vol 10 (5) ◽  
pp. 649-663
Author(s):  
Reena Siwach ◽  
Parijat Pandey ◽  
Harish Dureja
Keyword(s):  
Drug Release ◽  
Dissolution Rate ◽  
Oral Absorption ◽  
In Vitro Release ◽  
Entrapment Efficiency ◽  
Class Ii ◽  
Dissolution Enhancement ◽  
In Vitro Drug Release ◽  
Bcs Class Ii

Background: The rate-limiting step in the oral absorption of BCS class II drugs is dissolution. Their low solubility is one of the major obstacles in the process of drug development. Dissolution rate can be increased by decreasing the particle size to the nano range, eventually leading to increased bioavailability. Objective: : In the present study, glimepiride loaded nanoparticles were prepared to enhance the dissolution rate. The aim of the work was to examine the effect of polymer-drug ratio, solvent-antisolvent ratio and speed of mixing on in vitro release of glimepiride. Methods: Glimepiride is an antidiabetic drug belonging to the BCS class II drugs. The polymeric nanoparticles were formulated according to Box-Behnken Design (BBD) using nanoprecipitation technique. The prepared nanoparticles were evaluated for in vitro drug release, loading capacity, entrapment efficiency, and percentage yield. Result: It was found that NP-8 has maximum in vitro drug release and was selected as an optimized batch. Analysis of Variance (ANOVA) was applied to the in vitro drug release to study the fitness and significance of the model. The batch NP-8 showed 70.34 ± 1.09% in vitro drug release in 0.1 N methanolic HCl and 92.02 ± 1.87% drug release in phosphate buffer pH 7.8. The release data revealed that the nanoparticles followed zero order kinetics. Conclusion: The study revealed that the incorporation of glimepiride into gelucire 50/13 resulted in enhanced dissolution rate.

Improved Bioavailability of Oxcarbazepine, a BCS class II drug by Centrifugal Melt Spinning: In-vitro and in-vivo Implications

2021 ◽  
pp. 120775
Author(s):  
Sidra Nasir ◽  
Amjad Hussain ◽  
Nasir Abbas ◽  
Nadeem Irfan Bukhari ◽  
Fahad Hussain ◽  
...  
Keyword(s):  
Melt Spinning ◽  
Class Ii ◽  
Bcs Class Ii
Sign in / Sign up

Export Citation Format

Share Document