Abstract
Background: The aim of the present study was to formulate and evaluate floating bioadhesive
tablets of Nizatidine which is a competitive, reversible H2-receptor antagonist. Floatingbioadhesive
drug delivery system exhibiting a unique combination of floatation and bioadhesion to prolong
gastric residence time was prepared.
Methods: Polymers used were Hydroxy Propyl Methyl Cellulose (HPMC) K15M as matrix forming
water swellable release retarding polymer and carbopol 934P as bioadhesive polymer. The gas generating
agents used were sodium bicarbonate and citric acid. The prepared floating bioadhesive tablets of
Nizatidine were optimized by 32 factorial design to study independent variable X1 (concentration of CP
934P) and X2 (concentration of HPMC K15M) and dependent variables as floating lag time, cumulative
percentage drug release at 12h and swelling index. Tablets were evaluated for various parameters
such as hardness, friability, drug content, swelling behavior, floating lag time, bioadhesive strength,
drug release profile and stability.
Results: All the formulations passed the test for weight variation, hardness, content uniformity and
showed acceptable results with respect to drug content (97.93 ± 0.57) and % friability. The tablet containing
25% HPMC K15M and 13.75 % Carbopol 934P was selected as optimized formulation which
showed the floating lag time of 74.34±2.08 seconds, drug release of 97.03±0.55% at 12 h (R12h,%), S.I
as 79.24±0.87 at 9 h and bioadhesive strength as 10.0023±21.47 g. Stability of the formulation was
proved using stability study.
Conclusion: The formulated tablets have a potential for controlled release of the drug through floatation
and bioadhesion.
Keywords:
Nizatidine, floating, bioadhesive, tablets, controlled release, gastric retention.
Graphical Abstract
[1]
Kalyanakrishnan, R.; Robert, C.S. Peptic ulcer disease. Am. Fam. Physician, 2007, 76(7), 1005-1012.
[2]
Rosa, J.C.; Hossein, Z.; Christopher, T.R. Design and testing in vitro of a bioadhesive and floating drug delivery system for oral application. Int. J. Pharm., 1994, 105(1), 65-70.
[3]
Lachman, L.; Liberman, H.A.; Kanig, J.L. The Theory and Practice of Industrial Pharmacy, 3rd ed; Vargese Publishing House: Bombay, 1986, pp. 297-300.
[4]
British Pharmacopoeia. Her Majesty’s Stationary Office for the
Department of Health, London, UK. , 2000; Vol. II, .
[5]
Ranga, R.K.; Siva, P.; Mohm, A.B.; Santhi, K. Formulation and evaluation of gastro retentive floating bioadhesive tablet of glipizide. Int. J. Res. Pharm. Sci., 2011, 2, 252-260.
[6]
Patel, D.J.; Patel, J.K. Optimization of formulation parameters on famotidine nano suspension using factorial design and the desirability function. Int. J. Pharm. Tech. Res., 2010, 2, 155-161.
[7]
Mamoru, F.; Peppas, N.A. Floating hot-melt extruded tablets for gastroretentive controlled drug release system. J. Control. Release, 2006, 115(2), 121-129.
[8]
Kasliwal, N. Effect of bioadhesion on initial in vitro buoyancy of effervescent floating matrix tablet of ciprofloxacin hydrochloride. J. Adv. Pharm. Technol. Res., 2011, 2(2), 121-126.
[9]
Sungthongjeen, S.; Sriamornsak, P. Design and evaluation of floating multi-layer coated tablets based on gas formation. Eur. J. Pharm. Biopharm., 2008, 69(1), 255-263.
[10]
Singhvi, G.; Singh, M. Review: In-vitro drug release characterization models. Int. J. Pharm. Sci. Res., 2011, 2(2), 77-84.
[11]
Chandrasekar, M.J.; Kuma, S.M.; Manikandan, D.; Nanjan, M.J. Isolation and evaluation of a polysaccharide from Prunus amygdalus as acarrier for transbuccosal delivery of Losartan potassium. Int. J. Biol. Macromol., 2011, 48(5), 773-778.
[12]
Panigrahy, R.N.; Mahale, A.M.; Sakarkar, D.M. Design development and in vitro testing of a combined bioadhesive-floating oral drug delivery system. J. Pharm. Res., 2011, 8(2), 41-46.