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An Investigation into Formulation and Processing Strategies to Drive Gastroretention of Gabapentin Tablets

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Abstract

Purpose

The aim of the present work was to develop gastroretentive drug delivery system of gabapentin from different matrices prepared by hot melt or conventional wet granulation, which may enhance drug bioavailability. The influence of core type, granulation process, and coating level on the drug release rates was investigated.

Methods

Tablet cores were prepared from hydrophilic system of hypermellose, carboxy melthyl celloulse, and Avicel or hydrophobic system of ethyl cellulose, alginic acid, and stearic acid. The tablets were coated by Eudragit RL with triethyl citrate and compressed directly. These tablets were evaluated according to their in vitro dissolution profiles and release mechanisms.

Results

Hydrophobic matrices allowed the control of drug release. Hot melt granulation was an effective tool over wet granulation or coating for slowing release rates from hydrophobic tablets. Both hydrophobic polymer ratio and coating level influenced the drug release mechanism. The drug release of samples with minor proportion of ethyl cellulose and stearic acid or low Eudragit RL level was driven by anomalous transport and the increase of their proportions contributed to the erosion of the matrix.

Conclusions

Hydrophobic core tablet prepared from hot melt granulation and coated by Eudragit RL has shown to be a promising formulation intended to gastroretentive gabapentin delivery system.

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Authors and Affiliations

  1. School of Pharmacy, The University of Jordan, Queen Rania Street, Amman, 11942, Jordan

    Bashar A. Alkhalidi & Hatim S. Alkhatib

  2. School of Applied Medical Sciences, German Jordanian University, 35247, Amman, 11180, Jordan

    Esra’a Albarahmieh

  3. Tabuk Pharmaceuticals, Tabuk, Kingdom of Saudi Arabia

    Sami M.A. Qassim & Manar A.L. Al-Asa’ad

Authors
  1. Bashar A. Alkhalidi
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  2. Esra’a Albarahmieh
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  3. Sami M.A. Qassim
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  4. Manar A.L. Al-Asa’ad
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  5. Hatim S. Alkhatib
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Correspondence to Bashar A. Alkhalidi.

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Alkhalidi, B.A., Albarahmieh, E., Qassim, S.M. et al. An Investigation into Formulation and Processing Strategies to Drive Gastroretention of Gabapentin Tablets. J Pharm Innov 12, 367–373 (2017). https://doi.org/10.1007/s12247-017-9300-2

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  • DOI: https://doi.org/10.1007/s12247-017-9300-2

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