Vet prescription fees explained

When you compare pet medicine prices, the medicine price is only part of the story.

A written prescription fee is what a vet practice may charge for issuing a written prescription that can be used with another supplier, such as an online pharmacy, where that is clinically appropriate. Understanding how that fee fits alongside medicine price, delivery and follow-up helps you compare total cost more fairly.

According to the CMA, prescription fees and how they are communicated were part of its veterinary medicines work. Exact remedy wording, fee caps, timelines and implementation status are set out in the CMA remedies report (Part B) and Appendix N, with medicines-market context in Appendix I — use the official PDFs linked under Sources at the end of this page whenever you need to confirm numbers or dates.

This guide is informational only. It is not veterinary, medical, legal or financial advice.

Source note: This guide is based on the CMA’s veterinary market investigation final decision report and supporting appendices. Vetfinder summarises the findings for pet owners and does not provide veterinary, legal or financial advice. Detailed medicine evidence is summarised in CMA Appendix I; prescription price control evidence in Appendix N (see Part A / Part B PDFs listed above).

Reforms timeline

Key implementation milestones from the final report and remedies process.

1. 1
   24 March 2026CMA final report published.
2. 2
   23 September 2026CMA Order deadline.
3. 3
   3-12 months after OrderPhased implementation window depending on remedy and business size.

Implementation is phased; this does not mean every practice has already changed everything today.

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What is a written prescription fee?

A written prescription is a prescription your vet provides that may, in some cases, be used to obtain prescribed medicine from a supplier other than the vet practice.

A prescription fee (or similar charge name on a bill) is what the practice may charge for preparing and issuing that written prescription. It is not the same as:

• the medicine price at the practice or online;
• a consultation or re-examination fee;
• dispensing fees if you buy from the practice;
• delivery from an online retailer.

Practices may describe charges differently, so if anything is unclear, ask for a plain-English breakdown.

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Why prescription fees matter when you compare prices

If you only compare headline medicine prices, you may miss costs that change the total you pay.

For example, an online retailer may show a lower medicine price, but you may still need to pay:

• your vet’s written prescription fee (where one applies);
• delivery;
• any minimum order or handling charges on the retailer site.

In other situations, buying from your vet may be simpler or more appropriate, especially if your pet needs medicine quickly or you want dispensing advice in the same visit.

The CMA looked at whether pet owners had enough information to compare options for medicines. Do not assume online is always cheaper or always suitable — compare the full picture and ask your vet what is appropriate.

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Questions you can ask your vet

It is reasonable to ask:

• What is the written prescription fee for this medicine?
• Is the fee per medicine or per prescription document?
• If more than one medicine is prescribed, how are additional items charged?
• How long is the prescription valid for?
• Can it be repeated, and under what conditions?
• Does my pet need a check-up before another prescription?

Your vet can explain what is clinically suitable. Do not change medicine, dose, frequency or supplier without speaking to your vet or a pharmacist.

The checklist below includes example questions some owners find useful. Any numeric cap (for example prescription fee limits) must match the current text in Part B / Appendix N — see Sources.

What to ask before booking

• Can you share your current consultation and out-of-hours prices?
• What is included in the quoted price, and what could add to the final bill?
• Do you publish written prescription and administration fees?
• If treatment could exceed £500 including VAT, can I receive a written estimate?
• How should I compare your listed prices with final charges if treatment changes?
• Where can I find your latest price information online or in practice?

This checklist is informational and not legal advice.

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A simple total-cost checklist

Before you decide where to buy, you may want to line up:

• [ ] Medicine price at the vet practice (if offered)
• [ ] Medicine price at the online retailer (if comparing)
• [ ] Written prescription fee (if applicable)
• [ ] Delivery and any minimum-order rules
• [ ] Urgency — can you wait for delivery safely?
• [ ] Pack size and strength — match what was prescribed
• [ ] Follow-up or check-up requirements your vet recommends

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How this connects to the CMA reforms

The CMA’s remedies include measures intended to improve transparency around written prescriptions and prescription fees, alongside other medicines-market changes.

We do not state that your vet must charge no more than a particular amount unless that wording has been verified against the current CMA Order, Part B remedy text and any applicable professional guidance — see Sources.

For the wider reform overview, see CMA vet reforms explained. For comparing clinic-level prices, see How to compare vet prices before booking.

To compare retailer medicine prices where Vetfinder has data, use compare prescription prices. For how written prescriptions work in practice, see Vet prescriptions and buying pet medicine online.

A guide on pet health plans may be published later at /guides/pet-health-plan-worth-it/ — it is not live yet.

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