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Original Article

J App Pharm Sci. 2016; 6(10): 210-215

Investigation of possible pharmacokinetic interaction of metformin with sugar replacement sweeteners in rats

Riad Awad, Eyad Mallah, Israa Al-Ani, Wael Abu Dayyih, Zainab Zakarya, Tawfiq Arafat.

Metformin is widely used for type II diabetes. Sugar replacement sweeteners such as Aspartame and Stevia, are usually consumed concomitantly with other antidiabetics by patients
The aim of this work is to investigate possible effects of two types of sweeteners; stevia and aspartame on the pharmacokinetic parameters of metformin in rats.
A simple, validated bio-analytical HPLC method was developed to measure metformin in rat plasma. Three groups of rats, each of eight were subjected to this study. The first group was given metformin solution 20mg/kg alone , the second group was given 20 mg/kg metformin with 4mg/kg stevia and the third group was given 20 mg/kg metformin with 10 mg/kg aspartame on fasting state. Blood samples were taken on scheduled time interval up to 6 hours and analyzed for metformin concentration. Pharmacokinetic parameters were calculated by Non-Compartmental Model and data were interpreted.
The results showed that administration of these two sweeteners did not have high effect on pharmacokinetics of metformin.

Key words: metformin, stevia, aspartame, HPLC , Pharmacokinetic

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American Journal of Preventive Medicine and Public Health


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