| Effect | Increase |
| Trial Design | Double blind |
| Trial Length | 1-7 Days |
| Number of Subjects | 20 |
| Gender | Both Genders |
| Age Range | 45-64, 65+ |
| Body Types | Overweight, Average |
Supplemental L-arginine (3g twice a day) was able to increase nitric oxide metabolites without significantly affecting blood flow. ADMA was not increased (the arginine:ADMA ratio actually increased).
