Home | Articles
Published on:June 2018
Indian Journal of Pharmaceutical Education and Research, 2018; 52(3):374-380
Original Article | doi:10.5530/ijper.52.3.43

Development of pH Independent Drug Release System for Dipyridamole

Authors and affiliation (s):

Adimulapu Anilkumar1*, Talasila Eswara Gopala Krishna Murthy2, Avula Prameela Rani3

1Research Scholar, School of Pharmaceutical Sciences and Technologies, JNTUK, Kakinada- 533003. AP., INIDA

2Bapatla College of Pharmacy, Bapatla, Guntur Dist., A.P., INDIA.

3University College of Pharmaceutical Sciences, ANU, Guntur Dist., A.P., INDIA.


Introduction: Dipyridamole is an Anti-platelet agent exhibits release problems at higher pH of small intestine due to its pH dependent solubility and precipitation followed by interruption of drug release from dosage form. To overcome this extended release formulation was developed by using pH modulating agent (tartaric acid). Objective: Present study was undertaken with a view of the formulations evaluated by performing dissolution testing on developed extended released tablets. Method: development of dissolution method at different time points and USP Apparatus 1 (basket) and 2 (paddle) at rotating speeds of 50 or 100 rpm used to evaluate the release characteristics of the formulations. Furthermore, solubility and in vitro dissolution studies of formulated tablets were performed at pH values of 1.2 and 5.5. Results: In this study we found increasing volume of dissolution medium pH 5.5 phosphate buffers drug precipitation is increased. The developed dissolution method was validated according to ICH guidelines for various parameters such as specificity, accuracy, precision, and stability. The dissolution method was confirmed by determining the dissolution rate of extended released Dipyridamole tablets containing pH modulating agent. The best in vitro dissolution profile was obtained using pH 5.5 phosphate buffer as the dissolution medium (500 ml) stirred at 100 rpm. A comparison of the dissolution profiles in official and developed media showed significant differences based on f1 and f2 values. Conclusoni: The developed dissolution test exhibited a higher capacity than the compendia methods in differentiating the release profiles of pH independent extended release tablets. It can be applied during formulation development and quality control analysis of pH independent extended release tablets for evaluation of the effects of pH modifier in dissolution medium and processing parameters.

Key words: Tartaric acid, Dissolution media, Extended release Dipyridamole Tablets.



Impact Factor

IJPER - An Official Publication of Association of Pharmaceutical Teachers of India is pleased to announce continued growth in the 2019 Release of Journal Citation Reports (source: 2018 Web of Science Data).


Impact Factor® as reported in the 2018 Journal Citation Reports® (Clarivate Analytics, 2019): 0.425

User login

This question is for testing whether you are a human visitor and to prevent automated spam submissions.
3 + 5 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

The Official Journal of Association of Pharmaceutical Teachers of India (APTI)
(Registered under Registration of Societies Act XXI of 1860 No. 122 of 1966-1967, Lucknow)

Indian Journal of Pharmaceutical Education and Research (IJPER) [ISSN-0019-5464] is the official journal of Association of Pharmaceutical Teachers of India (APTI) and is being published since 1967.


IJPER uses reference linking service using Digital Object Identifiers (DOI) by Crossref. Articles from the year 2013 are being assigned DOIs for its permanent URLs