Method This study used a non-randomized pre-test and post-test design to evaluate the effects of coadministration of Moringa tea and metformin on selected parameters in T2DM patients. Consented patients, aged 49 -77 years were stabilised on the same brand of metformin for seven days. On day 8 after an overnight fast, baseline fasting blood sugar (FBG) and 2-hour post prandial blood sugar (2-hPPBG) were determined using a glucometer. Blood samples were also collected at the appropriate times for evaluation of serum creatinine, trough and peak metformin plasma concentrations.