The UK Rules
'Follow the Regulations'
Veterinary Adverse Reaction Reporting

Animal Medicine or Microchip Problems

Find out who to contact to report a suspected problem with an animal medicine or a microchip. This page explains what to do if a pet, other animal, or a human has an unexpected reaction to a veterinary medicine.

CONTACT VMD: What should you do if you or your animal has an adverse reaction to any medicine?

You can report it to the Veterinary Medicines Directorate. The same applies for microchip implants or for a medicine that fails to work.

There are three different forms used to report unexpected or suspected medical reactions. As a rule, it depends most on whether:

The VMD will use all the information given to them. It helps them track potential problems with animal medicines and microchips. In turn, this helps to keep humans, and the animals we keep on farms, safe.

Animals in farming businesses usually means livestock, horses, and dogs. Even so, cats and birds can also suffer adverse reactions to medicines. Some of the birds of prey are a common farm bird and used for hunting foxes.

Animal Reaction to Animal Medicine

Make a report if medicine given to your animal does not work or has made it unwell. It does not matter whether you or a vet gives the medicine. But, if you apply medicine to your animal, be sure to follow all the related safety requirements.

The information and details needed for filling in the 'Adverse Report Animal Form' include:

Note: You can make the report online through Veterinary Medicines Directorate website (see below).

In some cases you may be unable to make an online report. Download the 'Adverse event reporting form' for animals '#212290-A5'. Complete the form and then post it to the Freepost address written on the form.

Reporting Animal Medicine or Microchip Problems in the United KingdomAnimal Reaction to Microchip Implant

Make a report of all incidents involving animal microchips. This includes situations if:

This type of veterinary adverse reaction reporting needs the chip number. Whoever injects the chip will give you the number following implantation.

These types of infections are unusual. Serious microchip complications occur around one in a million in the United Kingdom. But, all infections need reporting so the database gets kept up-to-date.

Note: Since the 6th of April 2016, all 'individually' licensed dogs need microchipping in the UK.

You can make a report online through the VMD website. Use the Microchip Adverse Event Reporting form. If you are unable to report online you can contact VMD by phone or by postal methods.

Human Reaction to Animal Medicine

If you suspect that yourself, or anyone else, is having (or had) a reaction to any animal medicine - you should report it. This includes any kind of skin irritation or any allergic reaction.

The information and details needed for filling in the 'Adverse Human Report Form' include:

You can make the report online through the Veterinary Medicines Directorate website. You can also download the Adverse Event Reporting form for humans 'form #212635-A5'. Complete the form and return it to the Freepost address written on the form.

Contacting the Veterinary Medicines Directorate

You can contact the Veterinary Medicines Directorate Pharmacovigilance Team by email, by phone, or by mail.

Veterinary Medicines Directorate
Pharmacovigilance Unit
FREEPOST KT 4503, Woodham Lane,
New Haw, Addlestone, Surrey, KT15 3BR

Email: adverse.events@vmd.defra.gsi.gov.uk
Telephone: 01932 338427
Website: www.gov.uk/government/organisations/veterinary-medicines-directorate
How to Report Animal Medicine or Microchip Problems in the United Kingdom