muscletech essential l carnitine 60 caps L-Carnitine Acetyl-L-Carnitine, 60 Veggie Caps (500
Description
Treatment of Peyronies disease with oral pentoxifylline

In the Phase II study, CoQ10 in daily doses of 300 mg, 600 mg, or 1200 mg was administered to Parkinsons disease patients, resulting in a significant slowing of functional decline [41]

So, while its not specifically used as an endurance supplement, it can protect us from getting sick which can decrease our endurance capabilities
Biochemical and Biophysical Research Communications

the incidence of progression from small to large EVs is 12% at 1 year and 25% at 2 years
