Reporting of suspected adverse events and product complaints

If you would like to report a suspected adverse event of the drug or any other complaint on MSD products, please contact us as soon as possible – call us or write an email.

Phone number: +420 233 010 111


When reporting suspected adverse events, please state:

  • What kind of medication the unintended or unfavorable response affects.
  • When the adverse event occurred.
  • Response to the drug you think is an adverse event.
  • If you are a patient, please provide contact on your doctor who has treated you when the adverse event has occurred. Please inform your doctor that we can contact him/her.
  • Your contact information (name and surname, phone number, email).

You can also report adverse event on the website