FDA-Inspected Site

Merck & Co. Inc

20 FDA inspections are on record for Merck & Co. Inc in Rahway, United States.

Clean· No action indicated

Rahway, United States · Last updated July 9, 2026

Overview

  • 20 FDA inspections are on record.
  • 6 inspections produced a Form 483.
  • The most recent recorded inspection date is 2026-03-13.

At a glance

Inspections

20

Form 483s

6

EIRs

3

Last outcome

Clean

Inspection history

FDA inspections on record, most recent first.

InspectionCategoryOutcomeForm 483
9 Mar 2026 – 13 Mar 2026Human DrugsClean
8 Dec 2025 – 18 Dec 2025BiologicsClean
6 May 2025 – 16 May 2025Human DrugsClean
13 Mar 2025 – 27 Mar 2025Human DrugsClean
15 Nov 2021 – 18 Nov 2021Human DrugsClean
15 Nov 2021 – 18 Nov 2021Human DrugsClean
15 Nov 2021 – 18 Nov 2021Human DrugsClean
13 Oct 2021 – 27 Oct 2021Human DrugsClean
26 Aug 2019 – 6 Sep 2019Human Drugs483View 483 →
16 Oct 2017 – 30 Oct 2017Human Drugs483View 483 →
28 Nov 2016 – 6 Dec 2016Human DrugsClean
8 Aug 2016 – 26 Aug 2016Human Drugs483View 483 →

Observations on record

Form 483 observations cited at this site, most recent first.

6 Sep 2019
21 CFR 312.56(b)

Notification of FDA of termination of investigator

Cited by Peter R Lenahan

30 Oct 2017
21 CFR 312.50

General responsibilities of sponsors

Cited by Nina Yang, Michael Serrano, Shirley S Wen, Bei Yu

26 Aug 2016
21 CFR 312.50

General responsibilities of sponsors

Cited by Nina Yang, Michael Serrano, Shirley S Wen, Jean M Mulinde

26 Aug 2016
21 CFR 312.56(b)

Investigator non-compliance

Cited by Nina Yang, Michael Serrano, Shirley S Wen, Jean M Mulinde

26 Aug 2016
21 CFR 312.56(b)

Notification of FDA of termination of investigator

Cited by Nina Yang, Michael Serrano, Shirley S Wen, Jean M Mulinde

Investigators

FDA investigators tied to this site in the record.

Recurring citations

CFR citation patterns observed across this site's inspections.

CitationWhat it coversCited
21 CFR 312.50Cited across public-safe Form 483 observations6x
21 CFR 312.56(b)Cited across public-safe Form 483 observations3x
21 CFR 312.57(c)Cited across public-safe Form 483 observations2x
21 CFR 312.58(a)Cited across public-safe Form 483 observations1x

Full site report

Get the verbatim findings behind Merck & Co. Inc's 6 Form 483s

Source PDFs, verbatim observations, and recurring CFR citations, so your team knows what this site gets cited for.

  • The site's full inspection history, with every Form 483 and its outcome
  • Warning letters and recalls tied to the company behind it
  • Whether recurring CFR citations get closed out or repeat