The L-isomer is the biologically active form utilized by the human body, while the D-isomer is either inactive or can potentially inhibit the function of L-carnitine
University of Copenhagen
Vitamin B12, also known as cobalamin, is a water-soluble vitamin that is essential for nervous system function, red blood cell development, DNA synthesis, energy metabolism, and antioxidant activity
Additionally, a 2016 study published in Circulation Research suggested that Metformin may also have some anti-inflammatory effects, as well as the ability to boost the immune system
Important Note The injection itself is minimally painful, and most patients experience only mild gastrointestinal side effects such as nausea or constipation, which typically subside as the body adapts