b12 injections side effects nhs Injection Walk-In Clinic North West UK Too Much B12 Symptoms: Overdose
Description
Possible side effects

Here's what to expect during your visit: Your provider will administer the injection safely and comfortably

Immediate medical attention is required for severe allergic reactions

1995;269(5 Pt 2):R120412

Contains only hydroxocobalamin in distilled water

These conditions can change how often and how much B12 you need
