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That difference medical-grade and monitored vs
For intramuscular injections, the common sites for B12 injections are the arm, upper buttocks, and thigh
This is of particular interest for conditions like Alzheimers or Parkinsons disease
MHRA Borderline Guidance MHRA guidance updated on 2 July 2026 explains that classification can consider pharmacological properties, explicit and implied claims, intended purpose, packaging, websites, social-media content and customer reviews
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