Nanosuspensions of poorly soluble drugs: Preparation and development by wet milling

2011 ◽  
Vol 411 (1-2) ◽  
pp. 215-222 ◽  
Author(s):  
Peng Liu ◽  
Xinyu Rong ◽  
Johanna Laru ◽  
Bert van Veen ◽  
Juha Kiesvaara ◽  
...  
2013 ◽  
Vol 2 (4) ◽  
pp. 179-196 ◽  
Author(s):  
Bhatt Ganesh ◽  
Raturi Ankita ◽  
Kothiyal Preeti

Low bioavailability is the major problem associated with poorly soluble drugs. The problem is more complex for drugs which are poorly soluble in both aqueous and nonaqueous media, as solubility is an essential factor for drug absorption, independent of the route of administration. Nanosuspensions have emerged as an attractive and promising approach to improve stability and bioavailability of poorly soluble drugs. These are very finely colloid, biphasic, dispersed, solid drug particles in an aqueous vehicle, size below 1?m, without any matrix material, stabilized by surfactants and polymers. Techniques such as wet milling, high-pressure homogenization, emulsification-solvent evaporation and supercritical fluid have been used in the preparation of nanosuspension. Nanosuspension can be delivered by oral, parenteral, pulmonary and ocular routes. DOI: http://dx.doi.org/10.3329/ijpls.v2i4.17117 International Journal of Pharmaceutical and Life Sciences Volume 2, Issue 4: October 2013; 179-196


Author(s):  
Vikram S Gharge ◽  
Mukesh B Shinde ◽  
Bipin D Pustake ◽  
Krishna B Kinage ◽  
Anup A Kulkarni

Solubility is an essential factor for drug effectiveness, independent of the route of administration. Poorly soluble drugs are often a challenging task for formulators in the industry. Conventional approaches for enhancement of solubility have limited applicability, especially when the drugs are poorly soluble simultaneously in aqueous and in non-aqueous media. Nanosuspension technology can be used to improve the stability as well as the bioavailability of poorly soluble drugs. Nanosuspensions are biphasic systems consisting of pure drug particles dispersed in an aqueous vehicle, stabilized by surfactants. These are simple to prepare and are more advantageous than other approaches. Techniques such as wet milling, high-pressure homogenization, emulsification–solvent evaporation and super critical fluid have been used in the preparation of nanosuspensions. It has the advantage of delivery by various routes, including oral, parenteral, pulmonary and ocular routes. The present article reviews the current methods used to prepare nanosuspensions and their application in drug delivery. More than 100 patents have been published on nanosuspensions in the recent days. This patent reviews covers different methods of pharmaceutical preparation and applications in drug delivery as well as the recent marketed published or granted patent surveys. This patent review is useful in enhanceing the knowledge of pharmaceutical application in drug delivery.


2019 ◽  
Vol 9 (01) ◽  
pp. 15-20
Author(s):  
B Pandey ◽  
A B Khan

The aim of the review was to explore the necessity, advantages and different techniques of oral films for enhancing solubility of poorly soluble drugs with an emphasis on the newer, state-of the art technologies, such as 3D printing and hot-melt extrusion (HME). The historical background of oral films is presented along with the regularly used techniques. The modern approach of quality-by-design (QbD) is unravelled, identifying appropriate critical process parameters (CPP) and applied to oral films. A section is devoted modern technologies such as 3D printing and HME of oral films. Oral films are innovative formulations by which poorly soluble drugs have been founds to give positive results in enhancing their solubility and dissolution characteristics. With modern sophisticated techniques, precise mass production of oral films has been given a thrust. Oral films have better patient compliance, improved biopharmaceutical properties, improved efficacy, and better safety. By applying QbD and implementation of modern technologies the newer generation of oral films are yielding promising results


2019 ◽  
Vol 15 (6) ◽  
pp. 576-588 ◽  
Author(s):  
Beibei Yan ◽  
Yu Gu ◽  
Juan Zhao ◽  
Yangyang Liu ◽  
Lulu Wang ◽  
...  

: According to the drug discovery, approximately 40% of the new chemical entities show poor bioavailability due to their low aqueous solubility. In order to increase the solubility of the drugs, self-micro emulsifying drug delivery systems (SMEDDS) are considered as an ideal technology for enhancing the permeability of poorly soluble drugs in GI membranes. The SMEDDS are also generally used to enhance the oral bioavailability of the hydrophobic drugs. At present, most of the self-microemulsion drugs are liquid dosage forms, which could cause some disadvantages, such as the low bioavailability of the traditional liquid SMEDDS. Therefore, solid self-micro emulsifying drug delivery systems (S-SMEDDS) have emerged widely in recent years, which were prepared by solidifying a semi-solid or liquid self-emulsifying (SE) ingredient into a powder in order to improve stability, treatment and patient compliance. The article gives a comprehensive introduction of the study of SMEDDS which could effectively tackle the problem of the water-insoluble drug, especially the development of solidification technology of SMEDDS. Finally, the present challenges and the prospects in this field were also discussed.


Lab on a Chip ◽  
2021 ◽  
Author(s):  
Peer Erfle ◽  
Juliane Riewe ◽  
Heike Bunjes ◽  
Andreas Dietzel

Poorly soluble drugs can be incorporated in lipid carrier nanoparticles to achieve sufficient bioavailability and open up diverse routes of administration. Preparation by antisolvent precipitation in microfluidic systems enables excellent...


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