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Current Drug Targets


ISSN (Print): 1389-4501
ISSN (Online): 1873-5592

Review Article

The Solubility-Permeability Interplay for Solubility-Enabling Oral Formulations

Author(s): Nidhi Nainwal*, Ranjit Singh, Sunil Jawla and Vikas Anand Saharan

Volume 20 , Issue 14 , 2019

Page: [1434 - 1446] Pages: 13

DOI: 10.2174/1389450120666190717114521

Price: $65


The Biopharmaceutical classification system (BCS) classifies the drugs based on their intrinsic solubility and intestinal permeability. The drugs with good solubility and intestinal permeability have good bioavailability. The drugs with poor solubility and poor permeability have solubility dependent and permeability dependent bioavailability, respectively. In the current pharmaceutical field, most of the drugs have poor solubility. To solve the problem of poor solubility, various solubility enhancement approaches have been successfully used. The effects of these solubility enhancing approaches on the intestinal permeability of the drugs are a matter of concern, and must not be overlooked. The current review article focuses on the effect of various solubility enhancing approaches viz. cyclodextrin, surfactant, cosolvent, hydrotropes, and amorphous solid dispersion, on the intestinal permeability of drugs. This article will help in the designing of the optimized formulations having balanced solubility enhancement without affecting the permeability of drugs.

Keywords: Solubility, intestinal permeability, solubility-permeability interplay, biopharmaceutical, cyclodextrin, hydrotropes.

Graphical Abstract
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