DESIGN, PREPARATION, AND EVALUATION OF SELF-MICROEMULSIFYING DRUG DELIVERY SYSTEM OF BAMBUTEROL HYDROCHLORIDE

Sachin Saggar; Ashutosh Upadhayay; Manish Goswami

doi:10.22159/ajpcr.2018.v11i12.27890

Authors

Sachin Saggar Department of Pharmaceutical Sciences, MJRP College of Health Care & Allied Sciences, Mahatma Jyoti Rao Phoole University, Jaipur, Rajasthan, India.
Ashutosh Upadhayay Department of Pharmaceutical Sciences, MJRP College of Health Care & Allied Sciences, Mahatma Jyoti Rao Phoole University, Jaipur, Rajasthan, India.
Manish Goswami Department of Pharmaceutical Sciences, University Institute of Pharma Sciences, Chandigarh University, Mohali, Punjab, India.

DOI:

https://doi.org/10.22159/ajpcr.2018.v11i12.27890

Keywords:

Self-microemulsifying drug delivery system, Bambuterol hydrochloride, Phase diagram, Zetasizer, Everted gut technique

Abstract

Objective: The self-micro-emulsifying drug delivery system (SMEDDS) of bambuterol hydrochloride was designed, prepared, and evaluated to overcome the problem of poor bioavailability.

Methods: The designing of the formulation included the selection of oil phase, surfactant, and cosolvent/cosurfactant based on the saturated solubility studies. Psuedoternary phase diagram was constructed using aqueous titration method, to identify the self-emulsifying region. Different ratios of the selected surfactant and cosolvent/cosurfactant (Smix) were also studied and used to construct the ternary phase diagram. The prepared formulations of the SMEDDS were evaluated for drug content, morphology, globule size, robustness to dilution, emulsification time, optical clarity, and stability.

Results: The formulation containing 10 mg bambuterol hydrochloride, triacetin (12.50% w/w), Tween 80 (43.75% w/w), and ethanol (43.75% w/w) was concluded to be optimized. The optimized SMEDDS not only showed optimum globule size, zeta potential, and drug content but was also found to be robust to dilution, formed emulsion spontaneously, and was stable. The optimized SMEDDS showed increased permeability of the drug across the intestinal membrane in ex vivo studies.

Conclusion: The results suggest that bambuterol hydrochloride can be formulated as self-microemulsifying drug delivery system, and further, SMEDDS can be used to improve the oral bioavailability of bambuterol hydrochloride.

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