l-carnitine & q 10 gel NATURE TARGET CoQ10-200mg with PQQ Omega-3s, High Absorption Coenzyme-Q10 with BioPerine, Supports Heart and Immune System, Cellular-Energy-Production, 120 Servings : Health & Household Pure Encapsulations CoQ10 l-Carnitine Fumarate

The US National Kidney Foundation did not recommend routine administration of L-carnitine to subjects undergoing dialysis yet encouraged the development of trials in patients with select symptoms that do not respond to standard therapy, i.e., persistent muscle cramps or hypotension during dialysis, severe fatigue, skeletal muscle weakness or myopathy, cardiomyopathy, and anemia requiring large doses of erythropoietin (74, 75)

10.1021/acssynbio.0c00234 ACS Synth

Reversible weakness and encephalopathy while on long-term valproate treatment due to carnitine deficiency

In patients with diabetic retinopathy, abnormal carnitine metabolism may exacerbate oxidative stress and inflammation in the retina and promote the development of the disease [317]