Medicines & Supplements A to Z > Calcium gluconate

Calcium gluconate

Last updated on 02/08/2021.

Overview   |   Dosage   |    Side Effects   |   Precautions  |   Tips  |   Where To Buy  

GENERIC NAME: Calcium gluconate



DRUG CLASS: Supplements 

SUB CLASS: Minerals & Electrolytes

USED FOR: Cardiac arrest due to electrolyte imbalance, Hypocalcemia

– 10% (injections)

What is Calcium gluconate for?

Calcium gluconate is a mineral supplement which is used to treat cardiac arrest in the presence of hyperkalemia (high level of potassium), hypocalcemia (low level of calcium), hypermagnesemia (high level of magnesium). Also, it can be used for the treatment of acute symptomatic hypocalcemia.

How to use it?

Calcium gluconate can be injected intravenously. 

For cardiac arrest or cardiotoxicity in the presence of hyperkalemia, hypocalcemia, or hypermagnesemia:
1.5-3 g over 2-5 minutes.

For acute symptomatic hypocalcemia:
0.5-2g, adjusted based on severity.

What are the side effects of Calcium gluconate?

Common side effects of Calcium gluconate include hot flushes, chalky taste, tingling sensation, and anxiety.

Who should not take Calcium gluconate?

– Patients with hypercalcemia or serum calcium levels above normal
– Patients with ventricular fibrillation

Pharmacist Tips:

With a balanced diet, one can often acquire enough calcium even if there is an increased loss in calcium caused by other diseases.

Common dosing schedule:

This schedule is for reference only, adjustments may be made according to individual needs.

Some common medications Calcium gluconate may interact with:
– Bisphosphonates, e.g. Alendronate, Risedronate

Please notify your doctor or pharmacist if you are taking the above medication, dosage adjustments might be needed.

Where to buy Calcium gluconate in Hong Kong?

In Hong Kong, Calcium gluconate is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at

Need more information?

For detailed information about the use of Calcium gluconate in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.