Diseases
b12 deficiency
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Overview
People with vitamin B12 deficiency can have neurological symptoms and/or damage without anemia (lack of red blood cells). General physical symptoms of vitamin B12 deficiency can include: Feeling very tired or weak. Experiencing nausea, vomiting or diarrhea. Not feeling as hungry as usual.
Symptoms
- feeling very tired or weak.
- experiencing nausea, vomiting or diarrhea.
- not feeling as hungry as usual.
- weight loss.
- having a sore mouth or tongue.
Causes
- lack of vitamin b12 in the diet
- gastritis
- digestive diseases
Risk factors
- being older than 75 years
- having a digestive system disorder
- following a strict vegan or vegetarian diet
Diagnosis
- blood test.
- signs and symptoms
Medicines used
Frequently asked questions
What is b12 deficiency?
People with vitamin B12 deficiency can have neurological symptoms and/or damage without anemia (lack of red blood cells). General physical symptoms of vitamin B12 deficiency can include: Feeling very tired or weak. Experiencing nausea, vomiting or diarrhea. Not feeling as hungry as usual.
What are the symptoms of b12 deficiency?
feeling very tired or weak., experiencing nausea, vomiting or diarrhea., not feeling as hungry as usual., weight loss., having a sore mouth or tongue.
What causes b12 deficiency?
lack of vitamin b12 in the diet; gastritis; digestive diseases
Which medicines are used for b12 deficiency?
cyanocobalamin, hydroxocobalamin, methylcobalamin, vitamin b12
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