| Effect | None |
| Values | (ml min⁻¹ 1.73 m⁻²) Control group: before 142 ± 19, after 137 ± 16. Vitamin C: before 141± 19, after 134 ± 16. |
| Trial Design | Randomized trial |
| Trial Length | 2-4 Weeks |
| Number of Subjects | 24 |
| Sex | Male |
| Age Range | 18-29, 30-44 |
| Body Types | Average |
In a randomized, double-blind, placebo-controlled trial, 24 male type 1 diabetes patients took either 6 g of vitamin C per day or placebo for 4 weeks. After 4 weeks, there were no statistically significant differences between groups for glomerular filtration rate, effective renal plasma flow, urinary albumin excretion rate, blood pressure, fasting glucose, HbA1c, or insulin requirement.
