I follow quite closely the suggested treatment level for B12 deficiency with neurological damage because I dont think the treatment level specified for B12 deficiency with only blood symptoms, which is apparently what you are following, is adequate for achieving my two goals regarding neurological damage
Methylcobalamin is absorbed more effectively by the body and is therefore considered the better option
Toxicology 241, 157166 (2007)
Quality and purity concerns : Research-grade peptides sold online are not subject to MHRA quality controls
doi:10.1212/CPJ.0000000000000043 In addition, there are several limitations in the research that has been conducted, such as: Many studies do not include the use of fluoroscopy or x-ray to verify the proper placement of the medication despite the fact that fluoroscopic guidance is routinely used today
Revolutionary NNMT Inhibition Mechanism 5-Amino-1MQ functions as a potent selective inhibitor of nicotinamide N-methyltransferase with IC = 1M, preventing the enzyme from converting nicotinamide to 1-methylnicotinamide