Side Effects of Vitamin B12

Your body relies on a specific balance of nutrients to perform vital processes, like cell renewal, that keep your body functioning at its best. While B12 is found in many common foods such as meat, eggs and fortified cereals, some of us may not be able to absorb enough of the nutrient for optimum functioning. When a B vitamin deficiency occurs, supplementation is an option for helping to ensure that you get enough of this nutrient each day.

Just be cognizant of the other elements of your diet and how they could interact with Vitamin B12 supplementation.

salmon with lemon and pepper

You Can Take Too Much Vitamin B12

Since Vitamin B is water-soluble, our bodies usually excrete excess amounts, making overdoses rare. If this occurs, the effects of a Vitamin B12 overdose can be unpleasant. Eye pain, abdominal discomfort and unusual fatigue are a few B12 side effects that indicate you may have taken too much. Severe side effects of a B12 overdose can include hives, increased sweating and an irregular heartbeat. If you have unusual symptoms after taking a vitamin, report the supplement you used to your physician.

Beware of Possible Medication Interactions

Tell your doctor about any supplements when you receive a new prescription, as several medications have adverse effects when taken with B12 supplements. Chemotherapy medications, long-term antibiotics and seizure preventatives can all increase your chances of experiencing B12 side effects. Certain over-the-counter medications, including pain relievers and stimulants, could interact with B12 supplements. Always use caution when starting a new supplementation routine and discuss your experiences with your doctor as needed.

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.