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Cal-GLU Side Effects

Generic name: calcium gluconate

Medically reviewed by Last updated on Aug 13, 2023.

Note: This document contains side effect information about calcium gluconate. Some dosage forms listed on this page may not apply to the brand name Cal-GLU.

Applies to calcium gluconate: oral capsule, oral tablet. Other dosage forms:

Serious side effects of Cal-GLU

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

Other side effects of Cal-GLU

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at

For Healthcare Professionals

Applies to calcium gluconate: compounding powder, injectable solution, intravenous solution, oral tablet.


Frequency not reported: Arrhythmias with concomitant cardiac glycoside use, hypotension, bradycardia, cardiac arrhythmias

Postmarketing reports: Vasodilation, cardiac arrest[Ref]


Frequency not reported: Tissue necrosis, calcinosis

Postmarketing reports: Local soft tissue inflammation, calcification due to extravasation[Ref]


Frequency not reported: End-organ damage (due to ceftriaxone-calcium precipitates), aluminum toxicity[Ref]

Nervous system

Postmarketing reports: Syncope[Ref]


1. Product Information. Calcium Gluconate (calcium gluconate). Fresenius Kabi USA, LLC. 2001;PROD.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.