ciprofloxacin vs moxifloxacin
Side-by-side comparison of ciprofloxacin and moxifloxacin Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Cipro
Avelox
Ciprofloxacin eye drops are an antibiotic medicine. They treat bacterial infections in the eye.
Moxifloxacin 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.
Moxifloxacin treats infections like pneumonia, skin infections, and infections in your stomach area. It can also treat sinus infections, bronchitis, and plague. This medicine should only be used to treat infections that are proven or very likely to be caused by bacteria that it can kill.
Ciprofloxacin is a fluoroquinolone antibiotic. It stops bacteria from growing and multiplying. This helps your body fight off the infection.
Moxifloxacin 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
- • Diarrhea
- • Headache
- • Dizziness
- 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 1,369
- Drug Ineffective 1,347
- Dyspnoea 1,224
- Pneumonia 1,142
- Vomiting 1,101
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.
Moxifloxacin can cause serious side effects, even if they don't happen to everyone. These include tendon problems, nerve damage, and central nervous system problems. If you have myasthenia gravis, moxifloxacin can make your muscle weakness worse. If you experience any of these serious side effects, stop taking moxifloxacin immediately and talk to your doctor. Because of these risks, moxifloxacin should only be used when other treatment options are not available for sinus infections or bronchitis.
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.
Talk to your doctor if you are pregnant or plan to become pregnant. Moxifloxacin may harm your unborn baby. It is not known if moxifloxacin passes into breast milk, so talk to your doctor if you are breastfeeding.
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How to Read This ciprofloxacin vs moxifloxacin Comparison
ciprofloxacin is classified in the Fluoroquinolone Antibiotic drug class, while moxifloxacin 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 moxifloxacin has 6,183. 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 moxifloxacin — 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.