The frequency of vitamin B12 injections depends on individual needs
Its not that big a deal

Specifications Product Name: SLU-PP-332 Size: 5 mg vial Compound Class: Synthetic small-molecule ERR agonist Primary Research Target: ERR// signaling Common Research Category: Exercise mimetic, metabolic research compound, mitochondrial research compound Appearance: Powder, typically white to off-white Form: Research-grade dry compound Storage: Store at 20 C, desiccated, and protected from light Documentation: Certificate of Analysis available or included by lot Research Applications Exercise-Mimetic Research Aerobic exercise gene programs, endurance biology, skeletal muscle adaptation Mitochondrial Biology Mitochondrial respiration, oxidative phosphorylation, ATP-related pathways Metabolic Research Fatty-acid oxidation, energy expenditure, insulin-sensitivity markers, metabolic syndrome models Skeletal Muscle Studies Oxidative fiber markers, fatigue resistance, muscle bioenergetics Cardiometabolic Models Cardiac fatty-acid metabolism, mitochondrial function, metabolic stress signaling Aging & Inflammation Research Age-related mitochondrial dysfunction, inflammatory signaling, cellular energy decline

Can physical therapy and pain management approaches be combined with B12 therapy
7 , e550 (2021)
Reconstitution: 3.0 mL per 10 mg vial (~3.33 mg/mL) for accurate unit measurements