- Nutritional deficiencies, iron, and folic acid can cause canker sores
- Numbness or tingling sensation in toes or fingers
- Loss of appetite
- Sore tongue, mouth, and throat
- Bleeding gums
- Frequent headaches
- Loss of balance
People who have the deficiency are advised to take necessary (Cyanocobalamin) supplements. Though vitamin B12 toxicity is rare, adverse effects might be observed in the following cases:
- People who are allergic to cobalt or cobalamin could develop an allergic reaction on taking these supplements. In severe cases, the affected person might experience symptoms such as hives, wheezing, breathing difficulty, swelling, etc.
- Leber's hereditary optic neuropathy is a medical condition affecting the eyes. It is a hereditary condition wherein the degeneration of the optic nerve gives rise to progressive loss of vision. The use of cobalamin supplements is associated with worsening of the symptoms.
When taking the supplement by mouth, applied directly over the skin, through the nose, or as an injection, it is relatively safe. However, there can be certain side effects associated with it.
- Pain and warmth at the site of injection
- Upset stomach
- Mild diarrhea
Vitamin B12 is an important vitamin required by the body, and to avoid deficiency or an overdose, one needs to take it in the recommended dosage.
|Age Group||Dosage (micrograms per day)|
|0 - 6 months||0.4|
|7 - 12 months||0.5|
|1 - 3 years||0.9|
|4 - 8 years||1.2|
|9 - 13 years||1.8|
|14 years and older||2.4|
Source: The Food and Nutrition Board at the Institute of Medicine
Though there's no tolerable upper intake limit for this vitamin, and being a water-soluble vitamin, the excess is flushed out with urine, it would be in one's interest to take these supplements as per the recommended dosage.
Disclaimer: This article is for informative purposes only and does not in any way attempt to replace the advice offered by an expert on the subject.