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They're available in 0.5 ml (50-unit) and 1 ml (100-unit) sizes
Fever, vomiting, and reduced appetite deplete fluids and nutrients rapidly, and a compromised digestive system absorbs oral supplements poorly
Common Side Effects While uncommon, some people may experience mild side effects after receiving a B12 injection, including[17]: Headache Nausea and vomiting Diarrhea Fatigue or weakness Tingling or numbness in the hands and feet These effects are typically short-lived and resolve on their own
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When it dips, even into the low-normal range for a high-demand life, you see it: slower recovery, softer focus, and mood shifts that track with real numbers, not vague intuition
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