amiodarone vs fluconazole

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Side-by-side comparison of amiodarone and fluconazole. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

moderate Known Drug Interaction

Amiodarone : Concomitant administration of fluconazole with amiodarone may increase QT prolongation. Caution must be exercised if the concomitant use of fluconazole and amiodarone is necessary, notably with high-dose fluconazole (800 mg).

Drug Class
amiodarone Class III Antiarrhythmic
fluconazole Azole Antifungal
Type
amiodarone Prescription
fluconazole Prescription
Summary
amiodarone

Amiodarone (Pacerone) is a medicine used to treat life-threatening, irregular heartbeats. It helps to restore a normal heart rhythm when other medicines don't work or can't be used.

fluconazole

Fluconazole is an antifungal medicine. It is used to treat infections caused by fungus.

What It Treats
amiodarone

This medicine treats very fast, irregular heartbeats in the ventricles (lower chambers of the heart). It is used when these irregular heartbeats are life-threatening. It is also used when other medicines don't work well enough or cause too many side effects. This medicine is for adults.

fluconazole

Fluconazole treats vaginal yeast infections. It also treats yeast infections in the mouth and esophagus. Fluconazole can also treat urinary tract infections, peritonitis, systemic Candida infections, and pneumonia. It can also treat cryptococcal meningitis. Fluconazole can also prevent candidiasis in patients undergoing bone marrow transplantation.

How It Works
amiodarone

Amiodarone affects the electrical signals in your heart. It slows down these signals, which helps your heart beat normally. This medicine can help prevent dangerous, fast heart rhythms.

fluconazole

Fluconazole works by stopping the growth of fungi. It blocks the fungus from producing a substance it needs to grow. This helps to clear up the infection.

Common Side Effects
amiodarone
  • Low thyroid levels (hypothyroidism)
  • High thyroid levels (hyperthyroidism)
  • Heart failure
  • Irregular heartbeats
  • Problems with the heart's natural pacemaker (SA node dysfunction)
fluconazole
  • Headache
  • Nausea
  • Abdominal pain
FAERS Reports
amiodarone
  • Dyspnoea 1,158
  • Asthenia 975
  • Fatigue 895
  • Nausea 606
  • Cough 597
fluconazole
  • Pyrexia 4,121
  • Nausea 3,697
  • Diarrhoea 3,538
  • Fatigue 3,151
  • Pain 3,123
Serious Warnings
amiodarone

This medicine can cause serious problems with your lungs, liver, and heart. Lung problems can be fatal. Your doctor will check your lungs with X-rays and breathing tests. Liver problems can also be fatal. Your doctor will check your liver with blood tests. This medicine can also make irregular heartbeats worse. You will likely start this medicine in the hospital where your heart can be monitored.

fluconazole

Coadministration of other drugs known to prolong the QT interval and which are metabolized via the enzyme CYP3A4 such as erythromycin, pimozide, and quinidine are contraindicated in patients receiving fluconazole.

Pregnancy
amiodarone

This medicine can harm your unborn baby. It can cause thyroid problems, slow heart rate, and brain development issues. Do not breastfeed while taking this medicine.

fluconazole

Tell your doctor if you are pregnant or plan to become pregnant. Fluconazole may not be safe for your baby. Talk to your doctor about breastfeeding while taking fluconazole.

Also Compare, Nearby Drugs

How to Read This amiodarone vs fluconazole Comparison

amiodarone is classified in the Class III Antiarrhythmic drug class, while fluconazole sits within the Azole Antifungal class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, amiodarone has 4,231 submissions while fluconazole has 17,630. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known moderate interaction flagged in FDA labeling, attributed to using these drugs together can affect the electrical timing of your heartbeat, which may lead to a dangerous heart rhythm.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for amiodarone or fluconazole.

Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.