The effects of a vitamin B12 shot can last anywhere from a few days to a few weeks , depending on your bodys needs and current B12 levels
In Japan, treating multiple sclerosis patients with daily 60,000g tablets of methyl B12, for six months, proved to be useful and safe
Blood cells sticking together is what leads to a blood clot which can cause a stroke.
In dietinduced obese mice, NNMTi treatment significantly reduced liver weight, liver volume, and hepatic triglyceride levels, alleviated hepatic steatosis and inflammatory infiltration, downregulated inflammatory factors (such as TNF and IL6) and lipogenic genes (such as FAS), and upregulated lipolytic genes (such as ATGL) in the liver
That is measured by an elemental technique, inductively coupled plasma mass spectrometry or atomic absorption spectroscopy, not by chromatography, and a certificate reporting only peptide purity has not established that the material is a complex at all rather than a peptide with some copper alongside it