DATA-BACKED GUIDE · UPDATED JULY 2026
Vet prescription fees explained and the new 2026 cap
A prescription fee is what your vet charges to write out a script so you can buy the medicine elsewhere. For years these fees varied wildly and could swallow up the saving from buying online. From September 2026 they are capped at £21, and this guide explains how to make that cap work for you.
The quick version
- From September 2026 vet prescription fees are capped at £21 per prescription.
- A written prescription lets you buy medicines online, often 50-60% cheaper than at the practice.
- The fee pays for the vet's time and legal responsibility in prescribing, not for the drug itself.
- For long-term medication, the online saving usually dwarfs the prescription fee.
Published and surveyed prices
Why the price varies so much
What you pay depends on how much medicine your pet needs and where you buy it. For a one-off short course, the prescription fee might cost more than it saves. For ongoing treatment, such as lifelong heart or thyroid drugs, buying online again and again can save far more than the £21 fee each time. Practices also differ in how long a prescription lasts before a re-check is needed, which changes how often you pay. The real bills below show typical prescription fees so you can judge whether asking for a written script is worth it.
How to pay less
- Ask for a written prescription for any long-term medication and compare online pharmacy prices.
- Check the prescription is valid for repeats, so a single fee covers several orders.
- After September 2026, decline to pay more than the £21 capped fee.
- Use a reputable UK online pharmacy that asks for a prescription, and factor in postage.
Common questions
Do I have to pay a prescription fee at all?
If you buy the medicine directly from the vet, there is usually no separate prescription fee. The fee applies when you ask for a written script to buy elsewhere, and even with it, online prices often work out cheaper.
What does the £21 cap actually cover?
From September 2026 it limits what a practice can charge to write a single prescription. It does not cap the price of the medicine or the consultation.
Is buying pet medicine online safe?
Yes, from a registered UK pharmacy that requires a valid prescription. Avoid any seller willing to supply prescription-only drugs without one.