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Vet Rate › Medicine prices › Epiphen (Phenobarbital) oral liquid for dogs
Epiphen (Phenobarbital) oral liquid for dogs (seizures): from £0.63 per ml online, at Pet Drugs Online, checked 2 November 2026. At a typical amount that’s about £18.89 a month for a dog. Online pharmacies need a written prescription from your vet for prescription medicines, which typically costs £27 at the practices we check.
Compare in the medicine price checker| Pack | Cheapest per ml | Other pharmacies (per ml) | Typical month |
|---|---|---|---|
| Epiphen (Phenobarbital) oral liquid for dogs | £0.63 Pet Drugs Online | – | £18.89 |
Cheapest price per ml across pack sizes, so the biggest pack is often the cheapest per ml. “Typical month” uses a typical amount (Dose varies by dog and vet instructions: check the label. Pack is 30ml bottle); your pet’s dose may differ. Prices checked weekly, last on 2 November 2026. Always check the final price, including delivery, before you order.
Often, but not always. Online you pay the medicine price, delivery and your vet’s written prescription fee (typically £27). For a long course, or a medicine your pet takes every month, the saving usually outweighs the fee; for a short course it may not. Ask your practice for its price, then use our medicine savings calculator to compare.
Under the CMA’s new rules, written prescription fees will be capped at £21.40 for the first medicine and £12.70 for each extra one: from 23 March 2027 at large groups and 23 September 2027 at smaller practices.
From £0.63 per ml online at Pet Drugs Online (checked 2 November 2026), about £18.89 a month at a typical amount. Prices vary by strength or size and pack, so check the table on this page.
Most of the medicines we track need a written prescription from your vet; the pharmacy will tell you if one is needed. Ask your vet for a written prescription and check it shows the medicine, strength and amount.
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Prices are from each online pharmacy’s own product pages, include VAT and exclude delivery. Vet Rate is independent: no pharmacy pays to be listed. Who owns the pharmacies we check: Pet Drugs Online, Inspiring Vet Care; Animed, CVS Group.
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