As fat tissue grows and more NNMT is produced, higher amounts of hormones and pro-inflammatory signals are produced that are responsible for weight gain and other chronic diseases such as type 2 diabetes and cardiovascular disease. NNMT is responsible for converting nicotinamide (NA) into 1-methylnicotinamide (1-MNA), which takes it out of the NAD salvage pathway (see the diagram below)
Cellular Energy & Mitochondrial Function
A B12 shot normally contains one form of B12 and can be any of the four types of B12 available including: Methylcobalamin Adenosylcobalamin Cyanocobalamin Hydroxocobalamin What Are The Health Benefits of Vitamin B12
However, some rare side effects of too much vitamin B12 can include: Headache Weakness Nausea Diarrhea Tingling sensations in the hands and feet Allergic reactions or skin rash (uncommon) When To Seek Medical Advice Risk of vitamin B12 deficiency: Groups at a higher risk of vitamin B12 deficiency include older adults, people who only eat plant-based foods (vegans and vegetarians), and those with certain chronic conditions (gastrointestinal disorders that can affect vitamin absorption)
After that initial period, it is common to continue injections monthly, though less frequent intervals might be OK if cobalamin blood levels are supportive