can l carnitine causes elevated tsh pubmed The Complex Web of Interferences With Thyroid Function Tests Beneficial effects of l-carnitine supplementation

Thats where L-Carnitine for fat loss and muscle gain comes into play

As a supplement, it may help with symptoms of flu, chronic bronchitis, and COPD symptoms, but evidence is weak for its purported ability to thin mucus during a cold and general claims of "immune support." Very preliminary studies suggest benefits for polycystic ovary syndrome (PCOS), Sjogrens syndrome, schizophrenia, compulsive behavior, as well as anti-aging applications (see What It Does)

People with cardiac arrhythmias wishing to switch to the ketogenic diet should take precautions, especially in the initial stages when the body typically loses more water and electrolytes (for details, see section 4.6), because deficiency of electrolytes such as potassium [216], sodium [221] or magnesium [222], can lead to or exacerbate arrhythmias

Kienesberger K, Pordes AG, Vlk TG, Hofbauer R

Moreover, the metabolic pathways associated with the nutritional regulation by dietary L-carnitine supplementation in zebrafish were determined