Heffernan M, Summers RJ, Thorburn A, Ogru E, Gianello R, Jiang WJ, Ng FM
B12 shots deliver a concentrated amount of cobalamin, a water-soluble vitamin essential for red blood cell formation, neurological function, and DNA synthesis, as detailed in the NIH fact sheet on vitamin B12
The peptide typically remains stable for 30-45 days when refrigerated
This can lead to different kinds of anemia, fatigue, weakness, tingling in the fingers and toes, numbness, irregular heartbeat, mood swings, shortness of breath, very pale skin, memory loss, confusion, and more
Nerve repair: B12 helps maintain the myelin sheath around your nerves
Vitamin B12 has a very low risk of toxicity, so there's really no upper limit to how much you can take without harm