l carnitine causes atherosclerosis The effects of L-carnitine supplementation on lipid profiles in adults: A systematic review and dose-response meta-analysis Neuroprotective effects of L-carnitine towards
Description
Maximum recommended daily caffeine intake for adults: 400 mg (EFSA)

Propionyl l-carnitine improvement of hypertrophied rat heart function is associated with an increase in cardiac efficiency

doi: 10.1038/nm.2282 272 WangG.ShimadaE.ZhangJ.HongJ

That means no jitters, no built-up tolerance, and no sleep disruption
