Patients following such a diet, should be advised to take oral vitamin B12 regularly
Medical supervision ensures injections are used where science supports them for your safety

References Nature Medicine (2014) Nicotinamide N-methyltransferase knockdown protects against diet-induced obesity PMC (2024) Nicotinamide N-methyltransferase inhibition mitigates obesity-related metabolic dysfunctions Frontiers in Pharmacology (2024) NNMT: a novel therapeutic target for metabolic syndrome PubMed (2021) LC-MS/MS assay for 5-amino-1-methylquinolinium: pharmacokinetic and oral bioavailability study ResearchGate (2021) Combined NNMT inhibition and reduced-calorie diet normalizes body composition in obese mice PMC (2022) Reduced calorie diet combined with NNMT inhibition establishes a distinct microbiome in DIO mice NMN.com / Scientific Reports Role of NNMT inhibition in muscle strength: enhanced grip strength with exercise Swolverine 5-Amino-1MQ mechanism, benefits, stacking and cycling guide PMC Subcutaneous drug injection review: pharmacologic considerations CDC Vaccine administration: subcutaneous route (angle/site

The most comprehensive study, published in BioMed Research International (2021), found that 5-amino-1MQ treatment "reverses diet-induced obesity and related T2D" in obese mice
Metabolic pathway research, adipocyte behavior studies, mitochondrial efficiency analysis, and NAD+-related biochemical investigations
Repeatedly using the same area can cause tissue damage, reduce absorption efficiency, and increase discomfort