l-carnitine fumarate structure tartrate (CAS 36687-82-8) tartrate is a stable form of L L-Carnitine Fumarate CAS 90471-79-7 -

Central nervous system regulation of organismal energy and glucose homeostasis

However, L-Carnitine is not a magic fat burner

CrossRef Evaluation of Changes in Salivary pH after Intake of Different Eatables and Beverages in Children at Different Time Intervals Ankit Pachori, Haalaswamy Kambalimath, Garima Bhambhani, Garima Malhotra International Journal of Clinical Pediatric Dentistry.2018

4 Diverse strategies for modulating plasma TMAO levels TMAO, derived from dietary choline, lecithin, and carnitine, is linked to cardiovascular, kidney diseases, and metabolic disorders

However, its essential to highlight that the applicability of these findings from a non-severe mouse model to human patients necessitates further investigation