Vitamin B12 Injections in Ashford, Chertsey & Walton

Most patients notice improvement within 24 to 72 hours. You may feel more energetic, mentally clearer, and generally better within the first few days. The full effects build over 1 to 2 weeks as your body replenishes its B12 stores.

A blood test is not required for our private B12 injection service. However, if you have symptoms of severe deficiency or an underlying condition, we may recommend speaking with your GP first. Our pharmacist will assess your suitability during a brief consultation.

B12 injections deliver hydroxocobalamin directly into the muscle, achieving 100% absorption. Oral tablets rely on digestion and typically only absorb 1 to 2% of the dose. Injections are particularly important for people with absorption issues, pernicious anaemia, or significant deficiency.

This depends on your individual needs. For a loading dose (treating deficiency), we typically recommend injections every other day for 2 weeks, then every 2 to 3 months. For general wellness maintenance, every 6 to 8 weeks is usually sufficient. Our pharmacist will create a personalised schedule for you.

Most patients describe it as a brief, mild sting — similar to a flu jab. The needle is fine and the injection takes just seconds. Some people experience a slight ache at the injection site for a day or so afterwards, but this is completely normal.

Vegans are at significantly higher risk of B12 deficiency since the vitamin is found almost exclusively in animal products. While fortified foods and supplements can help, many vegans find that injections are the most reliable way to maintain optimal B12 levels, especially if you have been vegan for more than a year.

NHS B12 injections are available for patients with a confirmed clinical deficiency, typically pernicious anaemia diagnosed through blood tests. Your GP would need to arrange this. Our private service is available to anyone who wants to boost their B12 levels without needing a GP referral or NHS diagnosis.

Side effects are rare and usually mild. You may experience slight redness or tenderness at the injection site, which resolves within a day or two. Hydroxocobalamin is water-soluble, so any excess is naturally excreted by the body. Serious adverse reactions are extremely uncommon.