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Can a vitamin B12 level of 116 pg/mL cause brain fog symptoms?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hi doctor,

I suffer from memory loss and lack of concentration. I have numbness in my mind. I am not able to think, recall, and memorize. I feel sleepy even after sleeping for 10 to 11 hours. I feel tired. I have been taking Methylcobal tablets for the past two days. I have a vitamin B12 level of 116 pg/mL. Are these levels extremely low? What is the possible cause? How to get my normal levels? How long does it take? What are the harmful effects that occur due to vitamin B12 deficiency?

Kindly guide.
Answered by Dr. Sugreev Singh

Education:

MD

Professional Bio:

Dr. Sugreev Singh is an experienced General Surgeon with expertise in Internal Medicine and General Medicine. He is skilled in performing a wide range of surgical procedures and managing complex medical conditions with a holistic approach. Known for his clinical precision and compassionate care, Dr. Singh is dedicated to delivering effective, patient-centered treatment to promote long-term health and recovery.

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Hi,

Welcome to icliniq.com.

I understand your concern. Your levels are low, and they can be increased easily by taking medications and a healthy diet. The possible causes are vitamin B12 deficiency and anemia. It is a condition where hemoglobin levels remain low. It can be increased by taking red meat in the diet with fruits such as pomegranate, papaya, and apple.

You can take syrup Dexorange 200 ml (Iron, vitamin B9, vitamin B12, and alcohol) and take 5 ml once a day for a month. Vitamin B12 deficiency can cause anemia, pale skin, and weakness. Kindly do a CBC (complete blood count) test to rule out anemia.

I hope this helps.

Thank you.

Medically reviewed by Dr. K. Shobana
Published At November 29, 2020
Reviewed At March 5, 2026

Education:

MD

Professional Bio:

Dr. Sugreev Singh is an experienced General Surgeon with expertise in Internal Medicine and General Medicine. He is skilled in performing a wide range of surgical procedures and managing complex medical conditions with a holistic approach. Known for his clinical precision and compassionate care, Dr. Singh is dedicated to delivering effective, patient-centered treatment to promote long-term health and recovery.

This doctor is not available for online consultations on the platform anymore.

Consult other doctors in the same speciality

Education:

BDS

Professional Bio:

Dr. K. Shobana is a Dental Surgeon specializing in oral health and dental care. She is skilled in preventive dentistry and provides oral hygiene education. She can do restorative treatments such as fillings and crowns. She can handle periodontal problems such as gum diseases and periodontitis. She can do root canal treatment.

This doctor is not available for online consultations on the platform anymore.

Consult other doctors in the same speciality

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Sugreev Singh
Dr. Sugreev Singh

Internal Medicine

Education:

MD

Professional Bio:

Dr. Sugreev Singh is an experienced General Surgeon with expertise in Internal Medicine and General Medicine. He is skilled in performing a wide range of surgical procedures and managing complex medical conditions with a holistic approach. Known for his clinical precision and compassionate care, Dr. Singh is dedicated to delivering effective, patient-centered treatment to promote long-term health and recovery.

This doctor is not available for online consultations on the platform anymore.

Consult other doctors in the same speciality
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