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As everyone is different, it is impossible to say with 100% certainty how long a vitamin B12 injection lasts in the body
Cross-contamination is a silent killer of good data
It first drew research interest for its ability to heal stomach ulcers and inflammatory bowel conditions, then expanded to tendon, ligament, muscle, and even bone healing across dozens of preclinical studies (Sikiric et al., PubMed)
They address deficiencies linked to fatigue, anemia, and neurological issues
But not all retailers have followed suit
Causes of Anxiety B12 Side Effects Another common side effect or issue reported from taking B12 or B vitamins is anxiety, heart palpitations and difficulty sleeping
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