Levothyroxine
Synthetic thyroid hormone replacement for hypothyroid dogs — a lifelong daily medication, never paused except under vet supervision. UK brand options include Thyforon (already catalogued) and generic equivalents. Active ingredient: levothyroxine sodium.
See your saving over a year
Pick your dog's weight (and optionally your vet's actual quote) to see the exact monthly and annual saving. The price comparison table below sorts pharmacies by cheapest first; we never sort by commission.
Based on a 15 kg dog, recommended strength: 200 mcg. Assumes 12 months of continuous use (chronic dosing) and one written prescription per year. CMA Order caps the prescription fee at £21 for the first medicine, plus £12.50 per additional medicine on the same prescription. Prices are indicative and last verified 2026-05-16. Always confirm the current price on the pharmacy site before purchase.
Why it costs more at the vet
Levothyroxine generics are exceptionally cheap by the tablet — the dispensary mark-up sits at the highest multiple of any chronic dog medication. Switching online saves £300+ annually for a long-term hypothyroid dog.
Ready to switch? It takes 5 minutes.
Copy-paste email template, prescription steps and refill setup. From "I just paid too much at the vet" to "I'm saving £X every month".
How to get a written prescription
The CMA Order is legally binding by 23 September 2026. Every UK vet must offer a written prescription on request, with the fee capped at £21 for the first medicine plus £12.5 per additional medicine on the same prescription. Take the prescription to any VMD-approved online pharmacy listed above.
Track Levothyroxine price drops
We'll email when Levothyroxine drops in price at any of the pharmacies above.
Stop overpaying for Levothyroxine.
Same medicine, same regulator, same vet relationship, half the price. Five-minute switch from in-clinic dispensing to a VMD-approved online pharmacy.
Pricing data status: indicative. Last verified 2026-05-16. Pharmacies change prices regularly, always confirm before purchase. Not medical advice.