b12 injections online amazon NOW Foods B-12 10,000mcg Shots 0.5 ounce 12 Count Box Mixed Berry dogs and horses as needed Used to help prevent and treat deficient levels of vitamin B Vitamin B-12 Injection, 1,000 mcg/mL

This gives about 5.0 mg/mL

NAD Preservation: Supports higher intracellular NAD availability, promoting mitochondrial function and cellular energy production

It binds to transport proteins, primarily transcobalamin II , which delivers B12 to tissues throughout the body

Published preclinical studies use it as a chemical research tool in cell and animal models investigating ERR signaling, mitochondrial function, cellular respiration, oxidative metabolism, and exercise-response pathways

Complete a short intake and a licensed provider reviews your fit

But if you get them from a trusted source (more on that below), it couldnt be safer or easier