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if you develop symptoms like hives, difficulty breathing, chest tightness, or severe dizziness after an injection, seek medical attention, as those could indicate an allergic reaction (which is extremely uncommon)
Clinically, B12 shots have long been used to treat cyanide poisoning
One of the primary benefits of B12 shots is the bioavailability of the vitamin
Its always a good idea to watch for any unusual symptoms, like signs of infection, and contact your provider if you have any concerns
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