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When to seek medical help See a doctor promptly if you have spreading redness or warmth around the site, discharge or a fever, numbness or weakness that does not settle, or any swelling of the face, lips or throat or difficulty breathing, which can signal a rare allergic reaction and is a medical emergency
Symptoms of deficiency, including fatigue, numbness, cognitive fog, and mood changes, may return over weeks to months
Discover how B12 works to help with weight loss
This information is for guidance only and not a substitute for professional medical advice
A: Most clients report only mild discomfortsimilar to a flu shot
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