Idoxuridine: uses, dosing, side effects & brands
Idoxuridine is a medicine sold in the U.S. under 3 brand and generic names. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.
Key facts
- Available as
- Tablet · Topical · Drops
- Sold as
- 3 products — Herplex, Stoxil and Dendrid
- Prescription?
- Prescription only
- Generic available?
- Not in our catalog
Every idoxuridine product we track (3)
Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.
| # | Drug | Rating | Type | Form | Generic? | Pharmacy pays | |
|---|---|---|---|---|---|---|---|
| 1 | 72/100 | Prescription | Tablet | No data | — | View → | |
| 2 | 72/100 | Prescription | Topical | No data | — | View → | |
| 3 | Not yet rated | Prescription | Drops | No data | — | View → |
What people report to the FDA about idoxuridine
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 10 reports naming idoxuridine, and the FDA flagged 70% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- alanine aminotransferase increased3 reports
- aspartate aminotransferase increased3 reports
- blood alkaline phosphatase increased3 reports
- gamma-glutamyltransferase increased3 reports
- hyperaesthesia3 reports
- neuralgia3 reports
- abdominal pain upper2 reports
- hepatocellular damage2 reports
Read these as a signal, not a rate. A report does not mean idoxuridine caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
Related calculators
Frequently asked questions
Can you take idoxuridine with other medicines?
It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run idoxuridine against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.
What brand names is idoxuridine sold under?
We track 3 idoxuridine-containing products in the U.S.: Herplex, Stoxil and Dendrid. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.
What forms does idoxuridine come in?
Across the brands we track, idoxuridine is currently marketed as tablet, topical and drops, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.
Is there a generic idoxuridine?
We do not currently list a generic-labelled idoxuridine product. That does not always mean none exists — it means none appears under a generic name in the FDA data we track. Ask your pharmacist.
Cite this page
- APA
- pharmaranks. (2026, July 24). Idoxuridine: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/idoxuridine
- MLA
- “Idoxuridine: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/idoxuridine.
We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.
Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.
Read the full FDA label for idoxuridine on DailyMed (NIH) ↗.