Contact your GP if: You have been found to have elevated B12 levels and have not received an explanation or follow-up plan You are taking high-dose B12 supplements without medical supervision You develop new symptoms whilst taking B12 supplements, particularly skin changes, persistent headaches, or gastrointestinal symptoms You have risk factors for liver disease (alcohol excess, viral hepatitis, obesity) and have elevated B12 You experience unexplained weight loss, night sweats, or persistent fatigue alongside elevated B12 Seek urgent medical attention if you experience: Jaundice (yellowing of skin or eyes) Severe abdominal pain or swelling Unexplained bruising or bleeding Confusion or altered consciousness Severe, persistent vomiting These symptoms may indicate serious underlying conditions such as acute liver failure, haematological emergencies, or other critical illness requiring immediate assessment

The frequency of your treatments will vary depending on your reasons for taking B12 injections and your levels of B12 when you begin the treatment
These injections are typically administered once a week, either in-office or at home, making them a convenient addition to any wellness routine
Disclaimer While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site
Is your diet rich in essential nutrients