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The honest answer is that a raised B12 on its own usually causes none: any symptoms you do have are far more likely to belong to whatever caused the elevation than to the vitamin
The science of B12 Clinically essential and widely studied: Vitamin B12 plays a vital role in red blood cell formation, neurological function, and mitochondrial energy production
It works as a standalone fat loss compound
Individuals Taking Certain Medications: Some medications, like proton pump inhibitors (PPIs) for acid reflux or metformin for diabetes, can interfere with B12 absorption
Most patients feel only a brief pinch or mild stinging sensation, and the discomfort is minimal and short-lived
