Enhance dissolution rate and solubility of solid drugs through pharmaceutical deep eutectic solvents

Idrees B. Qader

doi:10.21271/ZJPAS.33.3.10

Authors

Idrees B. Qader Pharmaceutical Chemistry Department, College of Pharmacy, Hawler Medical University, Erbil, Kurdistan Region, Iraq.

DOI:

https://doi.org/10.21271/ZJPAS.33.3.10

Keywords:

Dissolution rate, Deep eutectic solvents, Adiphenine HCl and Ranitidine HCl.

Abstract

Pharmaceutical active ingredients are usually sold in the markets in the form of solid drugs. These drugs are often associated with some problems like polymorphism, bioavailability and low solubility. In this study, deep eutectic solvents (DESs) are used to change solid drugs into liquids, which may provide a potential solution to these problems. This research describes preparation of pharmaceutical deep eutectic solvents (PDESs) from hydrogen bond donors (HBDs) like urea and glycerol and hydrogen bond acceptors (HBAs) like adiphenine HCl and ranitidine HCl, which are one of the key parts of medicine improvement. Differential scanning calorimetry (DSC) was used to measure glass transition temperatures for the prepared PDESs and fourier transform infrared spectroscopy (FT-IR) was utilized to clarify hydrogen bond formation between HBDs and HBAs. Also, dissolution test apparatus and UV-Vis spectroscopy were used to measure dissolution rate and concentration of the prepared PDESs in this work. The higher dissolution rate was achieved for the tested APIs when in the form of PDESs. This was mainly obvious for ranitidine HCl: glycerol, which was 2.6 times faster than ranitidine HCl.

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