l carnitine 3000 mg uses NutraBio® - L-Carnitine - Green Apple - 16 fl oz (31 Servings) L-Carnitine 3000 - Stimulant-Free L-Carnitine
Description
Such a study would also have to be carried out over at least 5 years and would be very expensive

Acetyl-L-carnitine seems to work best in people who have not had diabetes for a long time or who have poorly controlled type 2 diabetes

L-Lisina-HCL 100 mcg

Neurochem Int 60(7):697706

2006 Dec;25(6):886-96