Strategies for improving hydrophobic drugs solubility and bioavailability

Abstract

Nowadays various drugs synthesized by various computational drug designs as well as various drugs have complex structure. Due to their complex structure, higher molecular weight which will increases solubility issues. Solubility is the most important and challenging task for researchers. Bioavailability and absorption of a drug depends on solubility of drug and thus we achieve pharmacological response. But poor aqueous solubility is a rate limiting step in bioavailability which made drug development more difficult. Drugs having low bioavailability require to be administered at a higher dose to achieve desired drug concentration in the systemic circulation and reach the target site. Thus, instead of getting desired effects drug produces side effects in the gastrointestinal tract. Hence, with the advancement of chemical science, the need of development of pharmaceutical technologies is also increasing. New techniques have been developed with a focus on enhancement of the solubility and oral bioavailability of poorly water-soluble drugs. The present review focuses on new technologies which are being used to resolve solubility issue of poorly soluble drugs which is the rate limiting step in bioavailability.