Enhancement of The Solubility and The Dissolution Rate of Oral Nimodipine Formulation with Solid Dispersion | ||||
| Egyptian Journal of Chemistry | ||||
| Article 15, Volume 64, Issue 2, February 2021, Page 721-728 PDF (443.56 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2020.40842.2828 | ||||
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| Authors | ||||
Takwa E. Ellakwa   1; Doha E. Ellakwa2
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| 1Physical Chemistry Department, Egyptian Russian University Egypt. | ||||
| 2Al-Azhar University, Biochemistry Department, Faculty of Pharmacy (Girls), Cairo, Egypt | ||||
| Abstract | ||||
| The present study was an attempt to enhance the dissolution rate of nimodipine (a poorly water-soluble drug), The objective of this study was to evaluate poloxamer 407 as a carrier for nimodipine solid dispersions. The solid dispersions of nimodipine with poloxamer 407 were prepared by the hot melting technique, the molar ratio (3:1). The physicochemical properties of Solid dispersion were investigated by Differential Scanning Calorimetry (DSC), powder x-ray diffraction (PXRD), and Fourier Transform Infrared (FT-IR) spectroscopy. The FT-IR spectra indicated there was no chemical interaction between nimodipine and poloxamer 407 in the solid dispersion. DSC analysis indicated a decrease in the melting point of nimodipine and poloxamer 407 in solid dispersion. The tablet form was prepared by wet granulation of nimodipine with a binder solution of poloxamer 407 and compressed the dried granules of nimodipine into non-friable, stable tablets. The other objective, the performance of two classes of super disintegrates as croscarmellose sodium (Ac-Di-Sol), and polyvinyl pyrrolidone K30 in the dissolution of nimodipine immediate release and promoting disintegration tablets was evaluated. The in-vitro dissolution was determined by using United States Pharmacopeia (USP) type II dissolution test apparatus. All the results indicated that enhancement of the dissolution rate of nimodipine has been done successfully and drug release Kinetics indicated that the drug dissolution was a diffusion equation. | ||||
| Keywords | ||||
| Solid dispersion; Nimodipine; Poloxamer 407; Dissolution rate; Kinetics; Hot melting method | ||||
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