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Certain groups are more likely to have low B12 during pregnancy, including: Vegans and vegetarians, since B12 is primarily found in animal products [*]
Minor side effects can include: A bit of tenderness, puffiness, or pink discoloration right around the puncture A brief warm or flushed sensation Mild headache or nausea Reach out to a medical professional right away if you notice: Redness that keeps spreading, heat, or discharge near the site (possible infection) Hives, facial swelling, or difficulty breathing (possible allergic reaction) Persistent numbness or tingling that spreads beyond the site Fever or chills within 48 hours of injection Safe Needle Disposal and Storage A proper FDA-cleared sharps bin is ideal
Needle sizing follows a flipped scale: a higher gauge number actually means a narrower shaft, so a 25-gauge needle is finer than a 21-gauge one
It helps to picture the chemistry
It impacts brain function, nervous system health, and blood cell formation
At first they used liver extract shots, but in 1948 B12 was isolated, and it was a matter of time before B12 shots became the norm
