How To Reduce Vitamin B12?
Concerned about high Vitamin B12 levels? Learn about potential causes and strategies for how to reduce Vitamin B12 through diet and medical guidance.
Written by Dr. Shaik Abdul Kalam
Reviewed by Dr. J T Hema Pratima MBBS, Fellowship in Diabetes Mellitus
Last updated on 13th Jan, 2026
Vitamin B12 is an essential nutrient that plays a crucial role in nerve function, red blood cell production, and DNA synthesis. While a deficiency can lead to serious health issues, having too much vitamin B12 in the body can also be a concern. If your blood tests show elevated B12 levels, you may wonder how to bring them back to a healthy range.
In this article, we’ll discuss why high B12 levels occur, their potential effects, and natural ways to manage them.
Understanding High Vitamin B12 Levels
Vitamin B12 is a watersoluble vitamin, meaning excess amounts are usually excreted through urine. However, in some cases, high levels may persist due to:
Excessive Supplementation: High-dose B12 supplementation without medical guidance can result in elevated levels.
Certain Medical Conditions: Liver disease, kidney disorders, or blood cancers can lead to the accumulation of Vitamin B12 in the body.
Dietary Intake: Although uncommon, very high consumption of B12-rich foods like meat, fish, and dairy might contribute to increased levels.
Underlying Health Issues: Certain autoimmune or metabolic disorders can disrupt the body's processing of Vitamin B12.
Symptoms of Excess Vitamin B12
Most people with high B12 levels don’t experience noticeable symptoms. However, in some cases, you may notice:
Mild digestive discomfort (nausea, diarrhea)
Skin rashes or acne
Headaches or dizziness
Anxiety or restlessness
If you suspect high B12 levels, consult a doctor to rule out underlying conditions.
Consult Top Dietician For Vitamin B12 reduction
How to Reduce Vitamin B12 Naturally
If your B12 levels are high due to supplements or diet, here are some ways to bring them down:
Adjust Your Supplement Intake: Consult your doctor about lowering or discontinuing high-dose B12 supplements, potentially switching to a lower dose if necessary.
Modify Your Diet: Reduce consumption of B12-rich foods such as red meat, liver, fish, eggs, and dairy, opting for plant-based sources in moderation.
Stay Hydrated: Drink plenty of water to help your body eliminate excess Vitamin B12 through urine.
Monitor Underlying Health Conditions: If elevated B12 is linked to liver or kidney problems, adhere closely to your doctor's prescribed treatment plan.
Get Regular Blood Tests: Undergo regular blood tests to ensure your Vitamin B12 levels remain within a healthy range.
When to See a Doctor
While high B12 is usually harmless, it’s important to rule out serious conditions. Consult a doctor if:
You experience persistent symptoms like fatigue, dizziness, or digestive issues.
Your blood tests consistently show elevated B12 without a clear cause.
You have a history of liver, kidney, or blood disorders.
Need Help? Book a Consultation on Apollo 24|7
If you’re concerned about your vitamin B12 levels, Apollo 24|7 offers expert consultations and lab tests to help you stay on track. Schedule a test or speak to a doctor today for personalized advice.
Conclusion
Balanced vitamin B12 levels are key to good health. If your levels are high, simple dietary adjustments and medical guidance can help restore balance. Always consult a healthcare professional before making changes to your supplement routine. Stay informed, stay healthy!
Consult Top Dietician
Consult Top Dietician For Vitamin B12 reduction
Mr Aritra Khan
Dietician
16 Years • PG Diploma in Clinical Nutrition,Doctorate in Public Health & Community Nutrition, Post Doctorate Fellowship in Functional Medicine & Critical Care Nutrition
Kolkata
Samaritan Clinic, Kolkata
(250+ Patients)
Ms. Samapti Maity
Dietician
16 Years • MSc. (Clinical Nutrition & Dietitics), NDEP, Course in Maternal Infant Young Child Nutrition.Diploma in Sports Nutrition, Diploma in Diabetic educator, FODMAP Specialist
Kolkata
BIENETRE CLINIC, Kolkata
Ms. Soma Saha
clinical nutrition
17 Years • B.Sc. - Home Science (Food & Nutrition), M.Sc. - Home Science (Food & Nutrition)
Kolkata
Dr Utsa Basu Clinic, Kolkata
(50+ Patients)
Dr Darshana R
General Physician/ Internal Medicine Specialist
15 Years • MBBS, MD, DNB (Internal Medicine), Diploma in Allergy, Asthma and Immunology , Fellowship in Diabetes
Bengaluru
Apollo Clinic, JP nagar, Bengaluru
(125+ Patients)
Dr. Chaithanya R
Internal Medicine Specialist Diabetologist
16 Years • MBBS, MD Internal Medicine, Fellowship in Diabetes(UK), CCEBDM(PHFI)
Bangalore
Apollo Clinic Bellandur, Bangalore
(75+ Patients)
Consult Top Dietician
Mr Aritra Khan
Dietician
16 Years • PG Diploma in Clinical Nutrition,Doctorate in Public Health & Community Nutrition, Post Doctorate Fellowship in Functional Medicine & Critical Care Nutrition
Kolkata
Samaritan Clinic, Kolkata
(250+ Patients)
Ms. Samapti Maity
Dietician
16 Years • MSc. (Clinical Nutrition & Dietitics), NDEP, Course in Maternal Infant Young Child Nutrition.Diploma in Sports Nutrition, Diploma in Diabetic educator, FODMAP Specialist
Kolkata
BIENETRE CLINIC, Kolkata
Ms. Soma Saha
clinical nutrition
17 Years • B.Sc. - Home Science (Food & Nutrition), M.Sc. - Home Science (Food & Nutrition)
Kolkata
Dr Utsa Basu Clinic, Kolkata
(50+ Patients)
Dr Darshana R
General Physician/ Internal Medicine Specialist
15 Years • MBBS, MD, DNB (Internal Medicine), Diploma in Allergy, Asthma and Immunology , Fellowship in Diabetes
Bengaluru
Apollo Clinic, JP nagar, Bengaluru
(125+ Patients)
Dr. Chaithanya R
Internal Medicine Specialist Diabetologist
16 Years • MBBS, MD Internal Medicine, Fellowship in Diabetes(UK), CCEBDM(PHFI)
Bangalore
Apollo Clinic Bellandur, Bangalore
(75+ Patients)
