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B12 Overdose Symptoms

Vitamin B12, or cobalamin, is commonly obtained from food sources such as beef, sea food and dairy. It can also be ingested in the form of a dietary supplement or injected as a B12 shot. When a person overdoses on B12, they may suffer some symptoms.

  1. Swelling

    • The patient may experience swelling and tenderness, particularly in the feet, ankles and leg calves. Swelling of the mouth, lips, tongue or face may also occur.

    Blood Clots

    • The patient may develop blood clots in the legs. Her or she may also suffer unexplained bleeding and bruising as well.

    Hives

    • The patient may develop a case of hives, which are characterized by an eruption of an itchy skin rash.

    Chest Pain

    • The patient my experience some tightness and pain in the chest as well as shortness of breath and difficulty breathing. An irregular heartbeat may also result.

    Muscle Weakness

    • The patient may develop muscle weakness or suffer from muscle cramps, tingling or numbness in the extremities may also be experienced.

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