l carnitine with b12 L-Carnitine for longevity – the science-based guide but we recommend supplementation to obtain optimal levels of this excellent amino acid Zetelixia Sugar Free Acetyl L-Carnitine

Established benefits of B12 therapy: Treatment of documented deficiency: Intramuscular hydroxocobalamin is the standard NHS treatment for pernicious anaemia and other causes of B12 deficiency, effectively reversing haematological and neurological complications

Res Rev Biomed Biotech 1(2):8389 Kiani AK, Pheby D, Henehan G, Brown R, Sieving P, Sykora P, Marks R, Falsini B, Capodicasa N, Miertus S (2022) Ethical considerations regarding animal experimentation

Spirulina - Benefits and Nutrients Spirulina is a good source of high-quality protein (about 6070% of its dry weight), containing all the essential amino acids

PubMed, Oeung, Sokunvary, et al