References
- 1. M. V. Srikanth, S. A. Sunil, N. S. Rao, B. J. Ram and K. V. R. Murthy, Statistical design and evaluation of a propranolol HCl gastric floating tablet, Acta Pharm. Sinica B.2 (2012) 60–69; DOI: http://dx.doi.org/10.1016/j.apsb.2011.12.008.
- 2. A. Nanda, M. Ola, R. Bhaskar, C. K. Sharma and S. Nayak, Formulation and evaluation of an effervescent, gastroretentive drug delivery system, Pharm. Tech. 10 (2010) 60–71; DOI: 10.4103/0253-7613.77344.
- 3. S. Arora, J. Ali, A. Ahuja, R. K. Khar and S. Baboota, Floating drug delivery systems: a review. AAPS PharmSciTech. 6 (2005) E372-90; DOI: 10.1208/pt060347.
- 4. V. S. Meka, B. J. Ram, S. A. Sunil, N. S. Rao and K. Ramanamurthy, Gastroretentive drug delivery systems: Novel approaches and its evaluation – a review, Int. J. Pharm. Rev. Res.10 (2011) 203–216.
- 5. V. S. Meka, H. W. L. Vanitha, S. R. Dharmalingham, R. Sheshala and A. Gorajana, Preparation and in vitro characterization of non-effervescent floating drug delivery system of poorly soluble drug, carvedilol phosphate, Acta Pharm. 64 (2014) 485–494. DOI: 10.2478/acph-2014-0038.
- 6. B. N. Singh and K. H. Kim, Floating drug delivery systems: an approach to oral controlled drug delivery via gastric retention, J. Control. Release63 (2000) 235–259; DOI: 10.1016/S0168-3659(99)00204-7.
- 7. A. Chandel, K. Chauhan, B. Parashar, H. Kumar and S. Arora, Floating drug delivery systems: a better approach, Int. Current. Pharm. J. 1 (2012) 110–118; DOI: http://dx.doi.org/10.3329/icpj.v1i5.10283.
- 8. S. Desai and S. Bolton, A floating controlled release drug delivery system: in vitro-in vivo evaluation, Pharm. Res. 10 (1993) 1321–1325; DOI: 10.1023/A:1018921830385.
- 9. J. Dubeh and N. Verma, Floating Drug Delivery System: A Review, Int. J. Pharm. Sci. Res.4 (2013) 2893–2899; DOI: 10.13040/IJPSR.0975-8232.4(8).2893-99.
- 10. P. J. Barnes, Theophylline, Am. J. Respir. Crit. Care Med. 188 (2013) 901–906; DOI: 10.1164/rccm.201302-0388PP.
- 11. Theophylline, http://www.drugs.com/pro/theophylline.html; access date 15/10/2014.
- 12. V. S. Meka and V. R. M. Kolapalli, Formulation of gastroretentive floating drug delivery system using hydrophilic polymers and its in vitro characterization, Braz. J. Pharm. Sci. 50 (2014) 431–439; DOI: http://dx.doi.org/10.1590/S1984-82502014000200023.
- 13. V. S. Meka, S. Pillai, S. R. Dharmalingham, R. Sheshala and A. Gorajana, Preparation and in vitro characterization of a non-effervescent floating drug delivery system for poorly soluble drug, glipizide, Acta Pol. Pharm. Drug Res.72 (2015) 193–204.
- 14. Evonik Industries. EUDRAGIT® L100, http://eudragit.evonik.com/product/eudragit/en/prod-uctsservices/eudragit-products/enteric-formulations/l-100/pages/default.aspx; access date 24/11/2015.
- 15. A. Becker, F. Katzen and L. Lelpi, Xanthan gum biosynthesis and application: a biochemical/genetic perspective, Appl. Microbiol. Biotechnol. 50 (1998) 145–152; DOI: 10.1007/s002530051269.
- 16. S. Kumar, R. K. Sahu, S. Sharma and R. Jangde, Design and evaluation of an oral floating matrix tablet of salbutamol sulphate, Trop. J. Pharm. Res. 11 (2012) 569–576; DOI: http://dx.doi.org/10.4314/tjpr.v11i4.7.
- 17. B. Y. Choia, H. J. Park, S. J. Hwangb and J. B. Parkc, Preparation of alginate beads for floating drug delivery system: Effects of CO2 gas-forming agents, Int. J. Pharm. 239 (2002) 81–91; DOI: 10.1016/S0378-5173(02)00054-6.
- 18. V. S. Meka, N. S. Rao, S. A. Sunil, B. J. Ram and K. V. R. Murthy, Statistical optimization of a novel excipient (CMEC) based gastroretentive floating tablet of propranolol HCl and its in vivo buoyancy characterization in healthy human volunteers, DARU J. Pharm. Sci. 20 (2012) 1–12; DOI: 10.1186/1560-8115-20-4.
- 19. M. Grassi and G. Grassi, Mathematical modeling and controlled drug delivery: matrix systems, Curr. Drug. Deliv.2 (2005) 97–116; DOI: 10.2174/1567201052772906.
- 20. F. Khan, M. S. M. Razzak and M. S. Reza, Preparation and in vitro evaluation of theophylline loaded gastroretentive floating tablets of METHOCEL K4M, Dhaka Univ. J. Pharm. Sci. 7 (2008) 65–69; DOI: 10.3329/dujps.v7i1.1220.
- 21. C. Narendra, M. S. Srinath and A. Moin, The study on the effect of formulation variables on in vitro floating time and the release properties of floating drug delivery system by a statistical optimization technique, Chem. Ind. Chem. Engin. Quart.14 (2008) 17–26; DOI: 10.2298/ciceq0801017n.
- 22. K. K. Satish, K. P. Santhosh, K. N. Nishanth and B. P. Bharghav, Formulation and in vitro evaluation of ofloxacin tablets, J. Pharm. Res. 4 (2011) 3007.
- 23. R. H. Myers, D. C. Montgomery and C. M. A. Cook, Response Surface Methodology: Process and Product Optimization Using Designed Experiments, 3rd ed., Wiley, New York 2009, pp. 15–29.
- 24. V. S. Meka, N. S. Rao, S. A. Sunil, B. J. Ram and K. V. R. Murthy, Thermal sintering: a novel technique used in the design, optimization and biopharmaceutical evaluation of propranolol HCl gastric floating tablets, Drug. Dev. Ind. Pharm.40 (2014) 33–45; DOI: 10.3109/03639045.2012.744416.
- 25. United States Pharmacopeia 29, NF 24, Pharmacopeial Forum. 30 (2006) p. 1474.
- 26. United States Pharmacopeia 29, NF 25, Tablet friability. Chapter 1216. USP30–NF25, Pharmacopeial Forum. 31 (2007) p. 1735.
- 27. M. Yasir, M. Asif, A. Bhattacharya and M. Bajpai, Development and evaluation of gastroretentive drug delivery system for theophylline using psyllium husk, Int. J. Chem. Tech. Res. 2 (2010) 792–799.
- 28. C. Rajveer, B. S. Rathinaraj, M. Fareedullah, G. S. Bangale and G. Shinde, Design and evaluation of ketorolac tromethamine sustained release matrix tablets, Deccan. J. Pharm. Cosmet.1 (2010) 57–71.