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Warning signs of serious vaccine reactions may include: Anaphylaxis is a potentially life-threatening allergic reaction that usually occurs within minutes to hours after vaccine administration
Low B12 levels are common, especially in people with restrictive diets, certain medical conditions, or high stress levels
Initial effects typically manifest within the first week
Electrolyte balance in the human body is necessary for cell signaling, nerve impulse conduction, muscle contraction, heart rhythm, kidney function, and fluid balance
The duration that a B12 injection remains effective in your body depends primarily on which formulation you receive
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