| Effect | Increase |
| Trial Design | Non-controlled trial |
| Trial Length | 1-6 months |
| Number of Subjects | 30 |
| Sex | Both Genders |
| Age Range | 45-64, 65+ |
| Body Types | Overweight |
In heart failure patients with preserved ejection fraction, 3g of supplemental citrulline daily was able to promote cardiac function and reduce blood pressure. Arginine at 8g was equally effective, and this study lacked a placebo control.
