As context for this question, look at the response for NDA211172 (inotersen) from the label.json endpoint: https://api.fda.gov/drug/label.json?search=openfda.application_number.exact:NDA211172

I have an internal tool for tracking content changes between versions of labels per application ID. This one just changed version from 4 to 5 and got a new SPL ID (ec6ce482-951a-455f-aba3-f7cf8d42cd29).

The diff for the change in label shows a bunch of places where whitespace has been removed and created many places where words are incorrectly concatenated together. For example, look at the drug_interactions field

7 DRUG INTERACTIONS7.1 Antiplatelet Drugs or Anticoagulant MedicationsBecause of the risk

This has 2 places where words are missing significant whitespace: INTERACTIONS7.1 and MedicationsBecause

I'm guessing this is due to some data transformation process that isn't handling newline characters like \n and \r properly.

This is not a problem in older versions of JSON labels so I expect there must be some change over the past year that is incrementally introducing this bug in more and mover labels over time.

1 Answer 1


Thank you for bringing this to our attention. We have created an issue in our GitHub repository to track resolution. We will post back on that link once the problem is remediated.

  • This is now fixed. Commented Aug 12, 2020 at 13:21
  • I can confirm that I'm seeing the fix. Thanks for the quick turn-around time, you've been very helpful.
    – Ryan
    Commented Aug 12, 2020 at 17:31

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