Treatment Aftercare - B12 Injection
Date Created:
2 March 2026 at 10:14:19
Date Updated:
2 March 2026 at 11:06:38
Responsible Individual:
MD
Evidence / Reference:
Care Quality Commission Fundamental Standards Regulations 9, 12 and 17
National Institute for Health and Care Excellence Anaemia and vitamin deficiency management principles
UK Health Security Agency Infection prevention guidance
British National Formulary Hydroxocobalamin and Cyanocobalamin prescribing information
Royal College of Nursing guidance on intramuscular injections.
Purpose:
To provide patients with clear and evidence-based aftercare advice following Vitamin B12 injections. The document ensures patients understand expected responses following treatment, safe post-injection care, and when to seek clinical advice, supporting safe delivery of injectable treatments in accordance with clinical governance standards.
Discription:
Vitamin B12 Injection Aftercare Advice
Haus of Ästhetik Patient Information
Thank you for attending your Vitamin B12 injection appointment today.
Vitamin B12 injections are commonly used to support energy levels, neurological function, red blood cell production, and overall wellbeing where deficiency or supplementation has been identified.
The injection is usually administered into muscle tissue, commonly the upper arm or thigh, allowing the vitamin to be absorbed gradually by the body.
Following the advice below will help ensure a comfortable recovery.
What You May Experience After Treatment
Most patients experience little or no downtime.
Common and normal effects include:
- Mild soreness at the injection site
- Slight redness or swelling
- Tenderness when touching the area
- Small bruise developing
These effects usually settle within a few days.
Some patients report feeling increased energy over the following days as levels improve.
Immediately After Your Injection
Please:
✓ Keep the injection area clean
✓ Leave any small dressing in place for several hours if applied
✓ Continue normal daily activities as tolerated
Avoid rubbing or massaging the injection site for the remainder of the day.
Activity Advice
You may return to normal activities straight away.
However, for the first 24 hours it is advisable to avoid:
- Intense upper body exercise if injected into the arm
- Heavy lifting involving the treated muscle
- Excess pressure on the injection area
This helps reduce soreness and bruising.
Possible Side Effects
Side effects are uncommon but may include:
- Headache
- Mild nausea
- Temporary flushing
- Dizziness shortly after injection
These normally settle quickly.
Very rarely, allergic reactions can occur following injectable treatments.
When to Contact the Clinic
Please contact Haus of Ästhetik if you experience:
- Increasing redness or swelling at the injection site
- Persistent pain
- Signs of infection
- Rash or itching developing after treatment
- Feeling unwell following the injection
We are happy to review any concerns.
Results and Treatment Frequency
Vitamin B12 supplementation schedules vary depending on individual needs.
Some patients receive:
- Single booster injections
- Short treatment courses
- Maintenance injections at agreed intervals.
Your practitioner will advise what is appropriate for you.
Clinic Contact Details
Haus of Ästhetik
4 Portland Square
Water Street
Bakewell
DE45 1HA
Telephone: 01629 385318
Emergency Advice and Out of Hours Support
If you have urgent concerns following treatment, please contact us.
Emergency / Clinical Support (Call or WhatsApp):
07514 543015
If you experience difficulty breathing, swelling of the face or throat, or symptoms of a severe allergic reaction, please call 999 or attend your nearest Emergency Department immediately.
Final Advice
Vitamin B12 injections are generally very well tolerated. Mild tenderness is the most common effect and settles quickly.
If you have any questions following treatment, please contact the clinic. We are always happy to help.
Haus of Ästhetik
