For example, according to the National Institutes of Health (NIH), adults between 19 and 50 years old should consume 2.4 micrograms of vitamin B12 per day
Key Findings from Preclinical Research Insights from Animal Studies While we always look to human trials for definitive answers, preclinical research offers a powerful window into how a compound works
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)
Common side effects associated with the B-12 shot include soreness at the injection site, diarrhea, swelling and itching