Report a suspected problem with an animal medicine or microchip

You can report a problem with:

  • an animal medicine
  • a microchip

You cannot currently use the Veterinary Medicines Directorate (VMD) service to report problems.

Report a problem with an animal medicine

You can report a problem with an animal medicine so it can be monitored for safety. This includes:

  • an unexpected reaction - in an animal or a person
  • times when a medicine has not worked

You can report a problem by:

  • telling your vet 
  • contacting the marketing authorisation holder, or the holder’s local representative - their contact details are on the leaflet that came with the medicine

If you no longer have the medicine packaging, you can check who the medicine marketing authorisation (MA) holder is on the product information database.

Reporting a problem with a microchip

You can report an unexpected reaction to a microchip implantation to the Department for Environment, Food and Rural Affairs (Defra).

Contact microchipping@defra.gov.uk with any queries to do with a reaction or problem with a microchip.

If you need help

Contact the Veterinary Medicines Directorate (VMD) Pharmacovigilance Team if you have any questions about reporting reactions.

VMD Pharmacovigilance Team
adverse.events@vmd.gov.uk  
Telephone: 01932 338427
9.30am to 4pm, Monday to Friday
Closed on bank holidays
Find out about call charges  

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