Understanding the distinctions in absorption, effectiveness, convenience, and cost is key to making an informed decision with your healthcare provider
For patients seeking weight loss who request B12 injections, GPs should: Assess for genuine deficiency through appropriate blood tests rather than empirical treatment Provide education about the lack of evidence supporting B12 for weight loss in non-deficient individuals Explore underlying concerns about weight and energy levels, addressing these through appropriate channels Signpost to evidence-based resources such as NHS weight management services according to local pathways Patients should contact their GP if they experience unexplained fatigue, neurological symptoms (numbness, tingling, balance problems), or signs of anaemia (pallor, breathlessness, palpitations), as these may indicate B12 deficiency requiring investigation
Useful under medical supervision: It is helpful when oral supplements are not enough or when faster correction is required
In most cases, vitamin B12 deficiency symptoms may include extreme tiredness, poor concentration, memory loss, dizziness, and disorientation
(NCD-RisC)