VITAMIN B12 INJECTION

About this treatment

Feeling constantly tired, foggy, or run down? Vitamin B12 injections at Sebastian Rose, Cardiff deliver fast, effective replenishment of this essential vitamin directly into the bloodstream — bypassing the digestive system entirely for immediate absorption and results that oral supplements simply cannot match. We use hydroxocobalamin, the prescription-strength form of B12 and the preferred clinical formulation recommended for treating deficiency. Unlike the cyanocobalamin found in most over-the-counter supplements, hydroxocobalamin is longer-lasting, more readily retained by the body, and is the gold standard choice for genuine B12 replenishment. As a prescription medication, a face-to-face consultation with our practitioners is required at least 48 hours before your treatment appointment can proceed — this ensures we can assess your suitability and prescribe appropriately. Vitamin B12 is essential for healthy nerve function, red blood cell production, DNA synthesis, and energy metabolism. Our bodies cannot produce or store B12 independently, so it must be obtained through diet — but many people struggle to absorb adequate levels even when eating well. B12 deficiency is far more common than most people realise, and even a mild shortfall can cause significant and debilitating symptoms including persistent fatigue and low energy, brain fog and poor concentration, low mood and irritability, muscle weakness, and tingling or numbness in the hands and feet. Those most commonly affected include people over 50 — as the ability to absorb B12 from food naturally declines with age — as well as vegetarians and vegans, those with pernicious anaemia, anyone who has undergone gastrointestinal surgery, and those living with digestive conditions such as Crohn's disease or coeliac disease. B12 injections are also widely used by those leading busy, high-demand lifestyles who simply want to support their energy, focus, and overall wellbeing. If you think you may be deficient, we strongly recommend adding a B12 blood test to your booking before starting injections. This gives you a clear baseline reading and ensures your treatment is genuinely tailored to your actual B12 levels rather than guesswork. Your blood test can be carried out at the same appointment as your consultation — simply add it at checkout when booking. Please note: Vitamin B12 injections are a supplement treatment and are not a substitute for medical diagnosis or treatment of B12 deficiency.