l carnitine increase metabolism l-Carnitine Supplementation in Recovery after Exercise Stimulant Free Subscription Only: Liquid L-Carnitine 3000:
Description
Not only does carnitine help the cells use oxygen and dispose of waste more efficiently, it also has those incredibly remarkable benefits for elderly individuals by mitigating fatigue (presumably for the same reason -- the increased efficiency of cellular function and less energy wasted)

Neurological manifestations typically manifest as movement disorders (tremors, involuntary movements, rigid dystonia), dysphagia, dysarthria, pseudobulbar palsy, drooling, dysautonomia, seizures, and sleep disorders

10.1111/febs.15714 FEBS J

When levels are low, these metabolites can recirculate, contributing to symptoms of oestrogen excess
