Published studies primarily focus on its interaction with enzymatic and metabolic pathways rather than endocrine signaling systems
Vegans, vegetarians, people over the age 50, anyone with stomach/bowel issues like chronic gastritis, leaky gut, IBS or celiac, and anyone who regularly takes medications such as Metformin, PPIs (used for GERD), H2 Receptor Antagonists (used for peptic ulcers), or anything that interferes with stomach acid production are actually at risk for vitamin B12 deficiency, and should supplement B12 regularly
Really serious reactions are super rare, but it's always good to tell your doctor about any health issues you have before you start
Always follow directions on the medicine label about giving Vitamin B12 injection to a child
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Standard IV Dosing Range The usual IV dose for vitamin B12 is between 1000 to 2000 mcg per session