How does ContextRx find wrong words on drug labels?
We scan newly published FDA DailyMed labels for correctly spelled words that change what a label means. An automated pipeline flags and verifies candidates, and a person reviews each case before we publish it. We don't name companies or products, and we don't give legal advice.
What we scan
We look at labels as they're newly published on FDA DailyMed, the public site where official drug labeling goes live. We read the label text itself.
What counts as a contextual wrong word
A contextual word error is a real word, spelled correctly, that changes the clinical or safety meaning of the sentence it sits in. That's different from:
- Typos: misspelled strings that spellcheck already flags.
- Style issues: awkward phrasing, punctuation or house-style choices that don't change what the reader would do.
Live example: a prescribing label said "indicted" where it needed "indicated" (see the case). Both are real words, and the swap turns a use statement into a legal accusation.
Made-up example: a schedule line that should say "daily" prints "dairy". Spellcheck passes it, and the instruction becomes a food.
How candidates are checked
An automated pipeline flags and verifies candidate wrong words. Before we publish a case, a person reviews it in context to confirm it's a real contextual wrong word that changes clinical or safety meaning.
Why we never name companies or products
The point is the failure class, not the firm. Wrong words like these can appear on any label, so we describe each case by company class only and never name a company, a product or a label ID. Our editorial standards explain this in full.
What we don't do
- No legal advice. Our pages are general information, not legal or regulatory advice.
- No claims about what the FDA requires beyond what a cited source says. We describe what we found on a label, not whether it breaks a rule.
For the full set of terms, see the glossary. For how a wrong word slips past review, see why reviewers miss wrong words.
Sources
This page describes ContextRx's own method and makes no outside claims, so it cites no sources.
Last reviewed: October 14, 2026
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FAQ
Where does ContextRx find wrong words?
We scan newly published FDA DailyMed labels.
What counts as a contextual wrong word?
A correctly spelled word that changes the clinical or safety meaning of its sentence. Typos and style issues don't count.
Is each flagged word published?
No. An automated pipeline flags and verifies candidates, and a person reviews each case before we publish it.
Why doesn't ContextRx name companies or products?
Because the point is the failure class, not the firm. We describe cases by company class only.
Does ContextRx give legal advice?
No. Our pages are general information, and we don't make claims about what the FDA requires beyond what a cited source says.