Calcium is a mineral needed for bone health, muscle movement, and nerve function. Hypocalcemia means the level of calcium in the blood is lower than normal.
Vitamin D helps to absorb calcium from food or supplements. Once in your body, calcium may be stored in the bones or exist in the blood. It may also be excreted through the kidneys. Levels of calcium in the blood are normally regulated by hormones from the parathyroid gland. Hypocalcemia may occur if an illness or medication interferes with this process. The most common cause of hypocalcemia is kidney failure. Other causes include a diet that is too low in vitamin D or pancreatitis.
Factors that may interfere with hormones, which can lead to hypocalcemia:
Factors that may decrease calcium intake:
Other factors that may increase the chances of hypocalcemia:
Early hypocalcemia may not have any symptoms. When symptoms do occur, they may include:
You will be asked about your symptoms and medical history. A physical exam will be done.
Testing may include:
Talk with your doctor about the best treatment plan for you. Options include:
Supplements may be given through an IV or with pills. Supplements may include:
Medications may also be given to control the condition causing the problem or to increase the amount of calcium in the blood. Medication options may include:
Your current medications may be changed if they are the cause of your hypocalcemia.
To help reduce the chances of hypocalcemia:
Family Doctor—American Academy of Family Physicians
The American Association of Clinical Endocrinologists
The Canadian Society of Endocrinology and Metabolism
Cooper M, Gittoes N. Diagnosis and management of hypocalcaemia. BMJ. 2008;336(7656):1298-1302.
Hypocalcemia. EBSCO DynaMed Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T115897/Hypocalcemia. Updated June 27, 2017. Accessed March 26, 2018.
Hypocalcaemia. Patient website. Available at: https://patient.info/doctor/hypocalcaemia. Updated December 23, 2015. Accessed March 26, 2018.
Last reviewed March 2018 by EBSCO Medical Review Board Marcin Chwistek, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.