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cidofovir vs gentamicin

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

major Known Drug Interaction

Nephrotoxic agents Concomitant administration of cidofovir injection and agents with nephrotoxic potential [e.g., intravenous aminoglycosides (e.g., tobramycin, gentamicin, and amikacin), amphotericin B, foscarnet, intravenous pentamidine, vancomycin, and nonsteroidal anti-inflammatory agents] is contraindicated.

Recommendation: This combination should be avoided. Your healthcare provider will need to find a safer alternative.

Drug Class
cidofovir Antiviral (Nucleotide Analog)
gentamicin Aminoglycoside Antibiotic
Type
cidofovir Prescription
gentamicin Prescription
Summary
cidofovir

Cidofovir injection is an antiviral medicine. It is used to treat CMV retinitis, an eye infection, in people with AIDS.

gentamicin

Gentamicin is an antibiotic medicine. It fights serious infections caused by certain bacteria.

What It Treats
cidofovir

Cidofovir treats CMV retinitis in people who have AIDS. CMV retinitis is an infection in the eye that can cause vision problems. This medicine has not been proven to work for other CMV infections or in people without HIV.

gentamicin

Gentamicin treats serious infections caused by certain bacteria. This includes infections in the blood, brain (meningitis), urinary tract, lungs, stomach area, skin, bone, and soft tissues. It can also treat bacterial infections in newborns.

How It Works
cidofovir

Cidofovir stops the CMV virus from making copies of itself. It does this by blocking a key enzyme the virus needs to reproduce its DNA. This helps to reduce the amount of virus in your body.

gentamicin

Gentamicin belongs to a class of drugs called aminoglycoside antibiotics. It works by stopping the growth of bacteria. This helps your body fight off the infection.

Common Side Effects
cidofovir
  • Kidney problems
  • Lowered white blood cell count
  • Decreased eye pressure
  • Inflammation inside the eye
gentamicin

No common side effects listed.

FAERS Reports
cidofovir

No adverse event reports.

gentamicin
  • Acute Kidney Injury 999
  • Pyrexia 751
  • Renal Failure 603
  • Diarrhoea 460
  • Sepsis 427
Serious Warnings
cidofovir

Cidofovir can cause serious kidney damage, possibly leading to death. To reduce this risk, you must receive IV fluids and take probenecid pills with each dose. Your kidney function and white blood cell counts will be checked regularly. This drug can also cause birth defects and cancer, based on animal studies. It is only for treating CMV retinitis in AIDS patients.

gentamicin

Gentamicin can potentially damage kidneys and cause nerve damage, including hearing loss. The risk is higher if you have kidney problems, receive high doses, or take it for a long time. Tell your doctor right away if you notice dizziness, ringing in your ears, changes in hearing, or kidney problems.

Pregnancy
cidofovir

Cidofovir may cause harm to an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if cidofovir passes into breast milk, so talk to your doctor if you are breastfeeding.

gentamicin

Tell your doctor if you are pregnant or breastfeeding. Gentamicin may harm your unborn baby. It is not known if gentamicin passes into breast milk.

Also Compare, Nearby Drugs

How to Read This cidofovir vs gentamicin Comparison

cidofovir is classified in the Antiviral (Nucleotide Analog) drug class, while gentamicin sits within the Aminoglycoside Antibiotic 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, cidofovir has 0 submissions while gentamicin has 3,240. 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 major interaction flagged in FDA labeling, attributed to these medications are both known to be toxic to the kidneys. using them together can cause severe kidney problems.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between cidofovir and gentamicin - always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.