Calcium is an essential mineral for health, necessary for bone formation and maintenance, and proper functioning of the kidneys, cardiovascular system, nerves and muscles. Calcium gluconate is a form of calcium commonly used to treat calcium deficiency (hypocalcemia) and certain other health conditions.
Common Uses
According to the Mayo Clinic, calcium gluconate is recommended for preventing or treating bone loss (osteoporosis) and weak bones (osteomalacia) in people at risk for these conditions. It also can be beneficial for some pregnant or nursing women and people taking certain medications.
Excess Mineral Removal
According to Drugs.com, calcium binds to other minerals and helps remove excesses from the body. It is useful for people with too much phosphate in the blood, or who develop an overdose of magnesium sulfate, which can cause respiratory depression.
Hyperkalemia
Calcium gluconate also is useful in treating effects of high potassium blood levels (hyperkalemia), because it lowers the risk of heart arrhythmia.
Types
Calcium gluconate is available in chewable tablets or tablets to be swallowed whole, as well as powder, effervescent, liquid and injectable form. Usually it is taken with meals to increase absorption.
Side Effects
Constipation is the most common side effect associated with calcium gluconate. Less common side effects include decreased appetite, nausea, dry mouth and increased urination. Rarely, an allergic reaction may occur, with difficulty breathing, throat closing, hives and facial swelling.



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