A 2019 randomized controlled trial of lipotropic injections (methionine, inositol, choline, B12) versus saline placebo in 120 participants on ad libitum diets found 0.8 kg (1.76 pounds) difference at 12 weeks, not statistically significant (p=0.18) (Karbalay-Doust et al., Journal of Research in Medical Sciences , 2019)
The NHS delivers B12 injections through a nurse or doctor for exactly this reason
Your first step is a comprehensive bloodwork panel not the basic panel your GP runs, but a full hormone, metabolic, and inflammatory workup
GSH deficiency is associated with age, a major risk factor for SARS-CoV-2 infections outcome (Grigoletto Fernandes et al., 2020
Incorporating Vitamins Into Your Diet What foods can ensure you have sufficient B12 and D in your diet