ciprofloxacin vs levofloxacin
Side-by-side comparison of ciprofloxacin and levofloxacin Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Cipro
Levaquin
Ciprofloxacin eye drops are an antibiotic medicine. They treat bacterial infections in the eye.
Levofloxacin is an antibiotic that fights bacteria in your body. It is used to treat different types of infections.
These eye drops treat corneal ulcers and conjunctivitis (pink eye) caused by certain bacteria. Corneal ulcers are open sores on the eye. Conjunctivitis is an infection that makes the eye red and swollen.
Levofloxacin treats infections like pneumonia, skin infections, prostate infections, and urinary tract infections. It can also treat anthrax after exposure and plague. This medicine should only be used for certain infections when other options won't work.
Ciprofloxacin is a fluoroquinolone antibiotic. It stops bacteria from growing and multiplying. This helps your body fight off the infection.
Levofloxacin belongs to a class of drugs called fluoroquinolones. It works by stopping bacteria from multiplying. This helps your body fight off the infection.
- • Burning or discomfort in the eye
- • White crystal-like build-up in the eye
- • Nausea
- • Headache
- • Diarrhea
- • Trouble sleeping
- • Constipation
- Allergic reaction to the medicine 5,673
- Pain 5,586
- Tiredness 5,504
- Diarrhea 5,328
- Feeling sick to your stomach 5,300
- Off Label Use 3,120
- Drug Ineffective 2,964
- Dyspnoea 2,949
- Pneumonia 2,862
- Nausea 2,791
Do not inject this medicine into your eye. Some people have had very bad allergic reactions, even after the first dose. Get emergency help right away if you have trouble breathing, pass out, or have swelling of the face, throat, or tongue.
This drug has serious warnings. Levofloxacin can cause tendon problems, nerve damage, and central nervous system effects. It can also make muscle weakness worse if you have myasthenia gravis. If you have any of these side effects, stop taking the medicine and call your doctor right away. Only use this medicine if you have no other treatment options for uncomplicated urinary tract infections, bronchitis, or sinusitis.
Tell your doctor if you are pregnant, plan to become pregnant, or are breastfeeding. It is not known if ciprofloxacin eye drops will harm an unborn baby. It is also not known if ciprofloxacin passes into breast milk.
Tell your doctor if you are pregnant or plan to become pregnant. Levofloxacin should only be used during pregnancy if the benefit outweighs the risk to the baby. It may pass into breast milk, so talk to your doctor about breastfeeding.
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How to Read This ciprofloxacin vs levofloxacin Comparison
ciprofloxacin is classified in the Fluoroquinolone Antibiotic drug class, while levofloxacin sits within the Fluoroquinolone Antibiotic class. Because both drugs share the same classification, they are often considered interchangeable in theory — but clinical outcomes rarely track that cleanly. 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, ciprofloxacin has 27,391 submissions while levofloxacin has 14,686. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. 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 ciprofloxacin and levofloxacin — 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.