Research Article | Volume : 1 Issue : 6, August 2011

In-vitro interaction of verapamil hydrochloride with magnesium sulphate (anhydrous) and its influence on protein binding of verapamil hydrochloride

Joysree Das Irfan Newaz Khan Fouzia Siraji Syeda Ridita Sharif Marzina Ajrin   

Open Access   


The interaction between Verapamil Hydrochloride and Magnesium Sulphate (anhydrous) has been studied in an aqueous system at pH 7.4 and 2.4. From spectrophotometric study, it has been found that Verapamil Hydrochloride form 1:1 complex with Magnesium Sulphate (anhydrous). Spectral studies helps to detect the initial complexation between drug and metal. Job’s plot at 7.4 and 2.4 provides same type of information. The Ardon’s spectrophotometric method confirmed the 1:1 complexation and the value of stability constants was calculated using Ardon’s plot. An in vitro study of protein binding of Verapamil Hydrochloride and their 1:1 mixture with Magnesium Sulphate (anhydrous) has been conducted by equilibrium dialysis method at (37 ± 0.5)0C and at pH 7.4. The Scatchard plots were prepared to reveal the number of binding sites and the affinity for protein binding. It has been found that interaction of the drug with Magnesium Sulphate (anhydrous) results into increasing the affinity and increasing the protein binding of Verapamil Hydrochloride.

Keyword:     Verapamil Hydrochloride Protein binding Equilibrium dialysis Scatchard plot Magnesium Sulphate (anhydrous) Ardon’s method.

Copyright:The Author(s). This is an open access article distributed under the Creative Commons Attribution Non-Commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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