• SRINU NAIK SAPAVATU Department of Chemical Engineering, University College of Technology, Osmania University, Hyderabad 500007, Telangana State, India
  • RAJENDRA KUMAR JADI Department of Pharmacy, University College of Technology, Osmania University, Hyderabad 500007, Telangana State, India



Buoyant, Non-effervescent, Low-density lipids, Direct compression


Objective: The main objective of the research work is to develop a single unit non-effervescent drug delivery system of Loratadine (LTD) by direct compression process to prolong the gastric residence time (GRT).

Methods: LTD non-effervescent tablets were prepared with different polymers like hydroxypropyl methylcellulose (HPMC) K15M, HPMC K100M (i.e.: 1:1, 1:2, 1:3) as release retardants. Glyceryl behenate (Compritol 888 ATO) and Glyceryl palmitostearate (Precirol ATO 5) were used (1:1, 1:2, 1:3) as low-density lipids to impart buoyancy for longer period.

Results: The drug (LTD) and excipient (i.e. HPMC, low-density lipid aids, etc.,) interaction studies were carried out by Fourier Transform Infrared Spectroscopy (FTIR) and there was no likely interaction involving them. The developed LTD floating matrix tablets were characterized by pre and post-compression parameters and all results were, found within the pharmacopoeial limits. The cumulative percentage of drug release ranges from 56.87±0.25 % (F12) to 99.87±0.09 % (F2). The drug release profiles of the all formulations (F1 to F12) were subjected to various pharmacokinetic parameters and the optimized formulation (F3) followed the Korsmeyer Peppas (R2=0.996) model with non-Fickian diffusion (n>0.5). The obtained data by radiographic images of F3 formulation showed the GRT is 6±0.5 h (n=3).

Conclusion: Hence, from all evaluation studies, it was evident that F3 formulation was optimized (99.82±1.63 % drug release in 12 h).


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