Objectives: This study aimed to evaluate the therapeutic potential effects of ascorbic acid or and pyridoxine on diabetic renal microalbumiuria. Methods: This was a cross-sectional study on patients with diabetes mellitus at Al-Yarmouk teaching hospital from January to December 2012, Iraq-Baghdad. Twenty one patients with diabetes mellitus (D.M), 8 IDDM and 13 IDDM were selected from, the duration of disease were ranged from 2-12 years for both type (10 females and 11males) and all enrolled patients ages were ranged from 28-65years. The concentration of total protein in urine was calculated by a biuret colorimetric assay and the urine creatinine level was measured by a modified Jaffe test. Statistical analysis: results are expressed as mean ± SD, for comparisons of two groups, Student’s t-test was used and statistical significance was accepted at p values < 0.05. Results: pyridoxine produced significant reduction in urinary albumin:creatinine ratio in patients with Type ?? D.M with the current therapy p?0.05 except with glimepiride p ?0.05 while the Ascorbic acid showed significant effect on albumin:creatinine in patients with Type ?? D.M after six week of treatment p ?0.05except on patient that treated with glibenclamide or glimepiride p?0.05. Combined effects of ascorbic acid 500 mg/day and pyridoxine 40mg/day on urinary albumin:creatinine produced significant reduction in albumin: creatinine ratio in both Type ? D.M and Type ?? D.M p ?0.05. Conclusions: Dual synergistic effects of ascorbic acid and pyridoxine produced more beneficial effects than either ascorbic acid or pyridoxine in amelioration of diabetic microalbuminuric nephropathy.