What is IV calcium gluconate used for?

Its labeled U.S. indication is treatment of acute symptomatic hypocalcaemia in adults and children.

Is calcium gluconate injection the same as a calcium supplement tablet?

No. Intravenous calcium gluconate is a monitored hospital treatment; oral supplements have different purposes and dosing.

Why must IV calcium be given carefully?

Rapid administration can affect blood pressure and cardiac rhythm, while extravasation can injure tissue.

Can calcium gluconate be mixed with any IV fluid?

No. Product labeling lists important incompatibilities, including phosphate- or bicarbonate-containing solutions.

Why is elemental calcium important?

Different calcium salts contain different amounts of elemental calcium, so salt weight alone does not tell you the calcium dose.

EVIDENCE-BASEDAWAITING CLINICIAN REVIEW

Calcium gluconate

WHO ATCA12AA03INNCalcium gluconate

Calcium gluconate injection is a hospital medicine used to replace calcium in acute symptomatic hypocalcaemia. It is not interchangeable with routine dietary calcium supplementation, and intravenous administration requires monitoring and careful line management.

At a glance

Quick facts

Drug snapshot

Drug class: Calcium salt / electrolyte replacement
Main uses: Intravenous treatment of acute symptomatic hypocalcaemia; other emergency uses may be protocol-driven and off-label depending on jurisdiction
Route: Intravenous for acute symptomatic hypocalcaemia; oral calcium gluconate products exist but are not equivalent to IV emergency use
WHO ATC: A12AA03
Key safety: Extravasation can cause tissue injury; rapid or excessive IV administration can cause hypotension, bradycardia or arrhythmias; compatibility and line management matter.
Monitoring: Serum calcium, ECG or cardiac status when indicated, IV site, renal function and compatibility with other infusions.

Names & terminology

How this medicine may be named or searched

Canonical page name: Calcium gluconate
INN / generic name: Calcium gluconate
Aliases / salts: calcium gluconate
Russian support entity: calciumgluconate.ru — entity relationship only, not a clinical source

Structured drug profile

Drug profile

INN data

INNCalcium gluconateInternational nonproprietary / generic name used for this entity.

WHO ATCA12AA03Anatomical Therapeutic Chemical classification; route-specific codes may differ for some medicines.

Drug classCalcium salt / electrolyte replacementPharmacologic / therapeutic class.

MechanismProvides ionized calcium, supporting neuromuscular, cardiac and cellular functions when serum calcium is acutely inadequate.Mechanism summarized at reference level.

RouteIntravenous for acute symptomatic hypocalcaemia; oral calcium gluconate products exist but are not equivalent to IV emergency useAvailable routes depend on the specific product.

Main usesIntravenous treatment of acute symptomatic hypocalcaemia; other emergency uses may be protocol-driven and off-label depending on jurisdictionApproved indications can differ by country and formulation.

Key safety contextExtravasation can cause tissue injury; rapid or excessive IV administration can cause hypotension, bradycardia or arrhythmias; compatibility and line management matter.Check exact product labeling and patient-specific contraindications.

Monitoring / reviewSerum calcium, ECG or cardiac status when indicated, IV site, renal function and compatibility with other infusions.Monitoring depends on indication, dose, route and patient factors.

What is Calcium gluconate?

What is Calcium gluconate used for?

Intravenous treatment of acute symptomatic hypocalcaemia; other emergency uses may be protocol-driven and off-label depending on jurisdiction. The exact approved indication depends on the product, route and country. ^[1]

How it works

Provides ionized calcium, supporting neuromuscular, cardiac and cellular functions when serum calcium is acutely inadequate.

Forms and formulations

Injection/infusion; oral products vary by market. Different formulations may have different indications, strengths, excipients and instructions and should not be assumed interchangeable.

Country / market layer

Availability and formulations by market

Brand names, strengths, prescription status and approved uses vary by jurisdiction. Check the exact national product record before relying on a formulation.

Market-specific

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United KingdomSearch current eMC product information

Search eMC ↗

Availability depends on the active ingredient, route and formulation; not every medicine in this reference has a current UK product.

This English reference was selected because DiseasesConditions.org also maintains an entity relationship to the project’s Russian-language support site calciumgluconate.ru. The Russian site is not used as a clinical source for this page.

How it is used

Intravenous calcium gluconate should be prepared and administered by healthcare professionals using the concentration, dilution and infusion rate in the product label or emergency protocol. Oral supplements use different dosing concepts based on elemental calcium.

For prescription treatment, use the patient-specific regimen rather than copying a dose from another person or another formulation.

Side effects

IV administration can cause flushing, nausea, blood-pressure changes or local infusion reactions. Extravasation may damage tissue. Rapid administration can provoke clinically important cardiac effects.

Important warnings and monitoring

Secure IV access and monitoring are essential. Product labels include compatibility precautions and special warnings for neonates and for simultaneous exposure to ceftriaxone because calcium-containing solutions can precipitate.

Monitoring context: Serum calcium, ECG or cardiac status when indicated, IV site, renal function and compatibility with other infusions.

Interactions

Calcium can interact physically or pharmacologically with several medicines. IV solutions containing phosphate or bicarbonate may be incompatible, and calcium can reduce oral absorption of drugs such as tetracyclines or levothyroxine when taken as supplements.

Pregnancy and breastfeeding

Calcium replacement may be necessary in pregnancy when clinically indicated. For IV treatment, maternal condition and serum calcium guide use; this is not a reason to self-administer high-dose calcium.

Overdose and accidental extra doses

Too much IV calcium can cause hypercalcaemia, arrhythmias, confusion and tissue calcification. Suspected dosing error requires immediate clinical monitoring.

Practical clinical context

The most important distinction is between the medicine entity and a specific marketed product. Strength, salt, route, modified-release design, age authorization and prescription status can change between products. When safety or dosing decisions matter, use the exact package leaflet, prescribing information or national regulator record for the product actually being used.

This page deliberately separates general evidence from the project’s Russian-language support site calciumgluconate.ru; that site identifies the cross-language entity but is not treated as an authority for clinical claims.

Common questions

Frequently asked questions

AWAITING CLINICIAN REVIEW

Sources

Clinical statements in this reference are based on named public-health, regulatory or guideline sources. Product-specific labeling remains authoritative for exact indications, dosing and contraindications.

1. DailyMed. Calcium Gluconate Injection label, updated June 2026. Source ↗
2. DailyMed. Calcium Gluconate Injection label (Fresenius Kabi). Source ↗

This medicine reference is evidence-based and is awaiting clinician review. It is not a substitute for personalized medical advice.