Wang J, Hodes GE, Zhang H, Zhang S, Zhao W, Golden SA, et al
"L-carnitine in recovery after exercise." Nutrients 2018;10:349
Many of this studys subjects also had ligament sprains and tendon issues, which often heal on their own over time, so its unclear if these improvements were due to the peptide or just the passage of time (the study had no control group)
Whilst ED is often multifactorial, involving vascular, neurological, hormonal, and psychological components, some research suggests nutritional status may play a contributory role in erectile function
However, persistent controversies surround its therapeutic efficacy and underlying molecular mechanisms
Capsules at room temperature is fine