10.1093/hmg/ddx299 Hum

Integr Food Nutr Metab 5(6):14 Shaw KA, Williams S, Patrick ME, Valencia-Prado M, Durkin MS, Howerton EM, Ladd-Acosta Christine M., Pas Elise T., Bakian Amanda V., Bartholomew Paige, Nieves-Muoz Nancy, Sidwell Kate, Alford Amy, Bilder Deborah A., DiRienzo Monica, Fitzgerald Robert T., Furnier Sarah M., Hudson Allison E., Pokoski Olivia M., Shea Lindsay, Tinker Sarah C., Warren Zachary, Zahorodny Walter, Agosto-Rosa Hilcon, Anbar Joshua, Chavez Katheleen Y., Esler Amy, Forkner Allison, Grzybowski Andrea, Agib Azza Hagel, Hallas Libby, Lopez Maya, Magaa Sandy, Nguyen Ruby H.N., Parker Jaylaan, Pierce Karen, Protho Tyra, Torres Hilda, Vanegas Sandra B., Vehorn Alison, Zhang Minyu, Andrews Jennifer, Greer Felicia, Hall-Lande Jennifer, McArthur Dedria, Mitamura Madison, Montes Angel J., Pettygrove Sydney, Shenouda Josephine, Skowyra Carolyn, Washington Anita, Maenner MJ (2025) Prevalence and early identification of autism spectrum disorder among children aged 4 and 8 years - autism and developmental disabilities monitoring network, 16 sites, United States, 2022

The question facing health-conscious individuals becomes: are B12 shots better than pills Richmond providers offer, and which option best suits your specific needs
"Not FDA-approved" just means the FDA hasn't reviewed or signed off on its safety, efficacy, dosing, or manufacturing for people
Introduce one new product at a time so you can identify what's responsible if you do react
[1] [2] B12 injections are primarily prescribed for patients with pernicious anaemia , an autoimmune condition where the stomach cannot produce intrinsic factor, a protein essential for B12 absorption in the gut