why am i still tired after b12 injections How Soon Do You Feel Less a Injection? Chronic Fatigue: Can B12 Shots

Application frequency and volume Most protocols call for once or twice daily application

18 Support for the poorer bioavailability of cyano-B12 comes from a study comparing sublingual cyano- with methyl-B12 (both 1000 g per day), which found that both forms led to a normalisation of B12 status, but B12 levels increased significantly more in the methyl-B12 form compared with the cyano-B12 form, although the formulations also had other differences the former was a tablet, the latter a spray

[1] Some compounders suggest adding B12 to tirzepatide formulations based on theoretical concerns about vitamin B12 absorption, though it's important to note that clinical evidence specifically linking tirzepatide to B12 deficiency is lacking

A new study just published shows that older people have slower processing speed in the brain at B12 levels in the lower half of the reference range