Report a problem with an animal medicine or microchip

Last updated: 17 March 2017

You can report a bad reaction, such as bad side effects, to an animal medicine or microchip to the Veterinary Medicines Directorate (VMD).

Report a bad reaction to an animal medicine in an animal

You can report when a medicine hasn't worked, or has made your animal unwell.

You'll be asked for details of:

  • the medicine, including batch number and medical authorisation number if known
  • the animal that was affected, including the species, breed and age
  • when and how the medicine was first given to the animal
  • the symptoms

Report an animal reaction

Report a bad reaction to an animal medicine in a human

You can report a bad reaction, such as a skin allergy, you or someone else has had to an animal medicine while using it on an animal.

You'll be asked for details of:

  • the medicine, including the batch number and medical authorisation number (if you know it)
  • the people affected - and how and when they came into contact with the medicine
  • the symptoms

Report a human reaction

Report a bad reaction to a microchip

You can report incidents with animal microchips including:

  • a reaction to the chip being implanted, such as injury, infection or prolonged bleeding
  • if a chip's moved from where it was implanted or has come out
  • a chip that doesn't read properly

You'll need the microchip number to make a report.

Report a microchip reaction

If you can't report online

Download and fill in the form for reporting an adverse reaction in either a human or an animal and send it to the address on the form.

Contact VMD

Contact the VMD Pharmacovigilance Team if you have any questions about reporting reactions.

VMD Pharmacovigilance Team
adverse.events@vmd.defra.gsi.gov.uk
Telephone: 01932 338427