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Contact your GP if you experience: Unexpected symptoms after starting B12 supplementation, including persistent skin reactions, gastrointestinal disturbance, or mild allergic manifestations Neurological symptoms such as significant tingling, numbness, weakness, or balance problemsthese may indicate B12 deficiency paradoxically, or alternative neurological conditions requiring assessment Unexplained fatigue or malaise that develops or worsens despite supplementation Concerns about medication interactions , particularly if taking metformin, proton pump inhibitors, or other medications affecting B12 metabolism [2] [4] Seek emergency medical attention (call 999) if you develop signs of a severe allergic reaction following B12 injection, including facial swelling, difficulty breathing, or widespread urticaria

These practices prevent contamination that could lead to injection site infections or systemic illness

In most cases, you should feel the full effects of the injection within a few weeks

IV therapy is monitored and administered by our independently-licensed Nurse practitioner after review of your health questionnaire

100% worth it Ive lost 10 pounds and it doesnt make me feel sick