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Frequently Asked Questions about B12 Shots How are B12 shots administered

Retrieved May 10, 2024

Seek emergency care for difficulty breathing, facial swelling, chest pain, or severe allergic reactions

Adequate B12 is linked to better concentration, faster recall, and reduced brain fog, especially in adults over 40, in anyone on a plant-forward diet, and in patients with the MTHFR gene variant that affects how the body processes folate and B12

2021 May 12;16(1):215

When adverse effects do occur following high-dose B12 administration, they are typically mild, transient, and often related to the route of administration rather than the vitamin itself