International Journal
of Pharmaceutical Sciences and Drug Research ISSN: 0975-248X | DOI Prefix: 10.25004 | CODEN (USA): IJPSPP

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Volume No.: 9 (2017) Issue No: 4

International Journal of Pharmaceutical Sciences and Drug Research 2017; 9(4): 149-159 http://dx.doi.org/10.25004/IJPSDR.2017.090401
Research Article

Optimization of Cilnidipine Nanosuspension Using a Center Composite Design

SK Nagar1*, MM Soniwala2

1School of Pharmacy, RK University, Rajkot - 360 020, Gujarat, India

2B. K. Mody Government Pharmacy College, Rajkot - 360 003, Gujarat, India


*Corresponding author: Mrs. Swati Nagar

Address: School of Pharmacy, RK University, Rajkot - 360 020, Gujarat, India

E-mail *: swati.nagar28@gmail.com

Relevant conflicts of interest/financial disclosures: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Received: 30 January, 2017; Revised: 05 June, 2017; Accepted: 14 June 2017; Published: 24 July 2017


Copyright © 2017 SK Nagar et al. This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License which allows others to remix, tweak, and build upon the work non-commercially, as long as the author is credited and the new creations are licensed under the identical terms.


The purpose of this investigation was to increase the solubility and dissolution rate of Cilnidipine by the preparation of nanosuspensions with solvent antisolvent method at the laboratory scale. Drug solution of Cilnidipine in acetone this mixture was added to stabilizer solution under continuous homogenization. Central composite design was employed to study the effect of the independent variables on the dependent The relationship between the dependent and independent variables was further Elucidated using multiple liner regression analysis (MLRA) and contour plots. Various process and formulation parameters were screened like homogenization speed, solvent to antisolvent ratio, homogenization time, type of stabilizer, concentration of drug and concentration of stabilizer. Physical stability can be enhancing physical stability of this colloidal system; nanosuspensions were freeze dried using D-mannitol. Seven different stabilizers were tried. Among them Poloxamer 407, Poloxamer 188, PVA and Tween 80 yielded nanosuspension in range of 90 to 350 nm. Freeze dried nanosuspensions were filled in capsules to make a deliverable dosage form and almost 100% drug dissolved in 5 minutes. The outcome of this study reveals the immense potential of nanosuspensions for delivery of Cilnidipine by improving its solubility and dissolution rate. These results show that the preparation of Cilnidipine-loaded nanosuspensions significantly improved the in vitro dissolution rate, thus possibly enhancing the fast onset of therapeutic drug effect.

Keywords: Nanosuspension, Cilnidipine, Dissolution, Solubility.


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