I am trying to search data with the drug name Hydroxychloroquine from the URL here from OpenFDA api

https://api.fda.gov/drug/event.json?search=patient.drug.medicinalproduct:%22hydroxychloroquine%22+AND+receivedate:%5B20200101+TO+20200513%5D&limit=99 [Edited]

There are 2918 relative results, will some results repeat? For example, if a patient and doctor both submitted their own reports independently. Or if multiple doctors were treating the same patient.


  • As a general rule (speaking as a data analyst/programmer), it is always important to perform some data profiling to ensure that you understand this type of potential issue. Unfortunately I don't have a specific answer with regard to openFDA data – Marcus D May 26 '20 at 13:11
  • The query you posted actually produces only 35 total hits. – Denis Krylov May 26 '20 at 15:59

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