There are also methylmalonic acid (MMA) tests that provide a more complete analysis of the vitamin B12 available in your body
The standard NHS protocol for B12 deficiency typically involves hydroxocobalamin 1mg intramuscularly three times a week for two weeks (if there's no neurological involvement) or on alternate days until no further improvement (if neurological symptoms are present)
Table of Contents How Quickly Does a B12 Injection Work
Key Safety Tips Always be trained by a healthcare provider before self-administering
Reported applications include NNMT enzyme inhibition assays measuring 1-methylnicotinamide formation or S-adenosylhomocysteine release, intracellular target-engagement assays in differentiated 3T3-L1 adipocytes where 5-Amino-1MQ reduced intracellular 1-methylnicotinamide with an EC near 2.3 M (Neelakantan et al., Biochem Pharmacol, 2018), membrane permeability and Caco-2 transport characterisation, methyltransferase selectivity panels covering COMT, DNMT1 and PRMT3, and rodent studies of NNMT inhibition in adipose tissue and liver following the antisense knockdown work of Kraus and colleagues (Nature, 2014)

This includes the following patient groups: - Those who follow a strictly vegan diet - Those over the age of 50 - Those who take certain medications that are known to inhibit the absorption of B12 - Those who have an autoimmune disorder - Those who have gastrointestinal disorders - Those who have issues with stomach ulcers, atrophic gastritis, and other similar health problems SYMPTOMS OF A B12 DEFICIENCY Whether you fall into any of the categories above or not, there are certain signs to be aware of that could mean that you are suffering from a vitamin B12 deficiency