is vitamin b12 injection safe in pregnancy Dosages: Your GoodRx Guide Vitamin B12 & Pregnancy: A
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This update was just added to the above article but for those more focused on the comments I thought Id add it here too

doi:10.3390/nu6051861
Key safety considerations include: Infection risk : Any injection carries risk of infection if proper aseptic technique is not followed Allergic reactions : Multiple ingredients increase the potential for hypersensitivity Undiagnosed conditions : Self-administration or private clinic use may delay diagnosis of underlying medical conditions Pregnancy and breastfeeding : Safety data for lipotropic formulations in pregnancy is lacking Call 999 immediately if you experience signs of anaphylaxis (difficulty breathing, facial/tongue swelling, collapse) after an injection

Prescribing exercise for individuals with type 2 diabetes: recommendations and precautions
