l carnitine plus 3000mg 3pcs-Cutler Nutrition Liquid Energy and Metabolism Liquid Carnitine 3000 | Maximum
Description
Xu, Yang, Li, et al., 2020 )

Complementary treatment in muscular .dystrophies and other myopathies, weakness and convalescence

The answer is it depends on what you are using it for
Oxidative stress and DNA single strand breaks in skeletal muscle of aged rats: role of carnitine and lipoicacid

A quick glance at the Certificate of Analysis (COA) on this product page (to the side of the product image) details the high levels of purity

10.1111/j.1526-4610.2011.02061.x Headache J
