If you are experiencing such problems, in the first instance you should see your GP who will undertake a blood test, review your symptoms, and diagnose any deficiency, alongside any need for dietary changes, oral supplementation, or prescribed injections of vitamin B12
Nguyen NT, Yabluchanskiy A, de Castro Brs LE, Jin YF, Lindsey ML (2014) Aging-related changes in extracellular matrix: implications for ventricular remodeling following myocardial infarction
eLife 9 , e54090 (2020)
Choose L-Carnitine if your focus is on fat metabolism, exercise performance, and faster recovery
It provides the body with cysteine, which is often the "bottleneck" ingredient in glutathione production