Two 2013 systematic reviews of interventions concluded that the modest benefit of propionyl-L-carnitine on walking performance was equivalent or superior to that obtained with drugs approved for claudication in the US (e.g., pentoxyphylline, cilostazol) yet inferior to improvements seen with supervised exercise interventions (69, 70)
Its what inspired her to pursue a career in nutrition
The FDAs 400 mg daily limit gives you a technical boundary, but that number was built to prevent acute toxicity in healthy adults, not to serve as a daily prescription for everyone
NAD + and precursors supplementation NAD + can be directly supplemented intravenously to increase cellular NAD + levels, which has been observed in healthy and elderly cohorts, suggesting improvements in cognitive function and increased expression of antioxidant genes, although these trials were conducted in small cohorts 66,116,117