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Its side effect profile is less well characterized due to limited human research
That includes signals tied to swelling, oxidative stress, and tissue breakdown
B12 vitamin shots may cause pain at the injection site, mild diarrhea, and swelling
Anaphylaxis shows up quickly, with symptoms such as difficulty breathing, swelling of the face or throat, rapid blood pressure drop and hives
Contamination is not always visible
There are use patches that transfer B12 through the skin, yet these patches are limited by how much B12 can be naturally absorbed by the skin and transferred into the blood stream
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