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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
Matrix Biol 17:6573 Halper J (2014) Advances in the use of growth factors for treatment of disorders of soft tissues
Vilsboll T, Krarup T, Madsbad S, Holst JJ (2003) Both GLP-1 and GIP are insulinotropic at basal and postprandial glucose levels and contribute nearly equally to the incretin effect of a meal in healthy subjects