Methyl B12 is also known as vitamin B12 and is a B-complex vitamin needed by the body for the production of healthy red blood cells and for maintaining healthy nerve cells. Deficiency in methyl can lead to pernicious anemia and nerve damage. Children with methyl deficiency are treated using methyl shots. Some children may experience several side effects after administration of methyl.
Irritation at Injection Site
Physicians usually administer ethyl shots as deep intramuscular injections, according to Drugs.com. Some children may experience redness, swelling and pain at the injection site after receiving methyl. Children who experience warmth and foul smelling discharge at the site of injection should receive evaluation as this may indicate an infection at the site. In order to avoid irritation, injection sites should be rotated and clean-technique should be used during injections.
Hypersensitivity
Children allergic to cobalt and other ingredients in methyl B12 shots may experience severe allergic reactions after receiving methyl B12. Children with allergic reactions may have symptoms such as problems breathing, wheezing, chest tightness, hives, itching, rashes and swelling of the face, lips and tongue. Such patients should be rushed to the emergency room as swelling of the tongue can block the airway.
Gastrointestinal Upset
Children may also experience gastrointestinal upset such as nausea, vomiting, heartburn and diarrhea after methyl B12 is injected, according to Drugs.com. Gastrointestinal symptoms normally go away with continued treatment. Children who continue to experience upset stomach after methyl B12 administration should be taken to the hospital for further evaluation.
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