Pharm Sci. 2021;27(3): 399-406.
doi: 10.34172/PS.2020.67
  Abstract View: 155
  PDF Download: 36

Research Article

Evaluation of Pharmaceutical Compatibility between Acarbose and Common Excipients Used in the Development of Controlled Release Formulations

Aiesheh Gholizadeh-Hashjin 1,2, Mohammad Shabani 2, Farnaz Monajjemzadeh 3,4* ORCID logo

1 Department of Pharmaceutical and Food Control, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
2 Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
3 Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
4 National Institute for Medical Research Development (NIMAD), Tehran, Iran


Background: Excipients are used in the formulation of pharmaceutical dosage forms, but mayinteract with active pharmaceutical ingredients (APIs). Some of these interactions could alterthe physicochemical properties of the APIs which can affect the therapeutic efficacy and safety.Acarbose is an anti-diabetic drug used in this study as an API to investigate its compatibility withcommon excipients in order to development of pharmaceutical controlled release formulations.

Methods: For this purpose, 15 different excipients were selected. Binary mixtures of drug witheach of the excipients (1:1 mass ratio) were prepared. Mixtures were analyzed immediately aftermixing and also after incubation at stress conditions (adding 20% water and incubated at 40°Cfor 2 months). The thermal analytical investigation like differential scanning calorimetry (DSC),Fourier transform infra-red spectroscopy (FTIR) and high-performance liquid chromatography(HPLC) were employed for physicochemical evaluations of the possible incompatibility.Photodiode-array (PDA) and mass studies were performed to ensure the peak purity of theHPLC peaks of API in stressed samples.

Results: Incompatible excipients with acarbose were determined as EC (ethyl cellulose),Carbopol 934, Hydroxypropyl cellulose, PEG2000 (Polyethylene Glycol 2000), Mg Stearate, NaAlginate and Poloxamer.

Conclusion: Results of this study would be used for the development of controlled releaseformulation of acarbose. It is recommended to avoid the use of incompatible excipients.

Keywords: Acarbose, Compatibility, Controlled release, Excipient, Preformulation
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Submitted: 06 Jun 2020
Revision: 08 Aug 2020
Accepted: 19 Aug 2020
ePublished: 02 Oct 2020
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