£39 per injection
Quick intramuscular injection. Under 5 minutes. No recovery time.
GPhC Registered Pharmacy
Yellow Fever Centre
Same Day Appointments
No Consultation Fees
10,000+ Patients Served
GPhC Registered Pharmacy
Yellow Fever Centre
Same Day Appointments
No Consultation Fees
10,000+ Patients Served
Key facts
No appointment needed
Call ahead to confirm availability — usually available same day.
Fast acting
Most people feel increased energy within a few days of their injection.
No overdose risk
B12 is water-soluble. Excess is safely excreted. No risk of toxicity.
- Why B12 Matters
What B12 Does in Your Body
Vitamin B12 is involved in some of your body's most critical functions. Deficiency has wide-ranging effects.
Improved energy levels
B12 is essential for converting food into cellular energy. Low levels cause persistent fatigue that rest doesn't fix.
Better mental clarity
B12 supports myelin production — the protective sheath around nerve fibres. Deficiency causes brain fog, poor concentration, and low mood.
Healthy red blood cells
B12 is required for red blood cell formation. Deficiency causes megaloblastic anaemia — a form of anaemia that makes you feel exhausted and breathless.
Nerve health
B12 is vital for neurological function. Long-term deficiency can cause tingling, numbness, and in severe cases, irreversible nerve damage.
- Who It's For
Is a B12 Injection Right for You?
Vegans & vegetarians
B12 is found almost exclusively in animal products — meat, fish, dairy, eggs. Dietary supplementation is essential for anyone eating plant-based.
Over 50s
B12 absorption decreases with age due to reduced production of intrinsic factor, a stomach protein needed for absorption. Injections bypass this issue entirely.
Pernicious anaemia
An autoimmune condition that destroys the cells that produce intrinsic factor, making oral B12 largely ineffective. Injections are the standard treatment.
Crohn's & coeliac disease
Conditions that damage the gut lining can prevent B12 absorption from food or oral supplements.
Long-term diabetes treatment
Long-term use of some type 2 diabetes medications can reduce B12 absorption. Regular monitoring and supplementation is recommended.
General wellness
Many people have low-normal B12 levels. An injection provides a direct, fast-acting boost — popular with people experiencing fatigue, brain fog, or low energy.
- What's Covered
Everything in Your Appointment
Our pharmacist covers all of this in your consultation — no second visit required for the assessment.
1. Energy & Mental State
- Persistent fatigue and low energy
- Brain fog (difficulty concentrating / remembering)
- Low mood, irritability, or mild depression
2. Neurological Symptoms
- Tingling or numbness in hands and feet
- Blurred or disturbed vision
- Poor coordination and balance problems
3. Physical Strength & Mobility
- Shortness of breath or dizziness on exertion
- Weakened muscles or difficulty walking
4. Oral & Skin Changes
- Mouth ulcers or sore, swollen tongue
- Pale or slightly yellow-tinged skin
- Why B12 Matters
What B12 Does in Your Body
Vitamin B12 is involved in some of your body's most critical functions. Deficiency has wide-ranging effects.
ReasonTypical frequencyNotes
Pernicious anaemiaEvery 2–3 monthsLifelong treatment required. Oral supplements are ineffective.
Dietary (vegan / vegetarian)Every 1–3 monthsDepends on how strictly plant-based your diet is.
Absorption issues (Crohn's, coeliac)Every 2–3 monthsInjections bypass the gut — essential where oral B12 cannot be absorbed.
Over 50sEvery 2–3 monthsIntrinsic factor production declines with age, reducing dietary absorption.
General wellnessEvery 1–3 monthsBased on how you feel and your blood B12 level if tested.
For people with normal absorption, oral supplements and injections are both effective. However, injections bypass the digestive system entirely — making them the better choice for anyone with absorption issues (pernicious anaemia, Crohn's, coeliac) or who simply wants guaranteed uptake without daily pill-taking.
- Also Consider
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