Tiacil vs Isathal - which to choose?

Different antibiotics. The vet picks based on the suspected organism or culture.

Will my dog need a follow-up eye check?

Usually 5-7 days after starting drops to confirm resolution.

Tiacil Eye Drops price comparison UK

Topical gentamicin eye drops for bacterial conjunctivitis and ocular surface infections. Active ingredient: gentamicin. Below: compare UK vet prices with VMD-approved online pharmacies for your dog's weight.

Dog weight (kg)Your vet's price per month (optional, £)

Typical vet price

£13.00–£19.00/mo

indicative UK range

Cheapest online

£8.50/mo

Pet Drugs Online

Annual saving

£54.00–£126.00

after £21 prescription fee: £33.00–£105.00

Based on a 15 kg dog, recommended strength: 5 ml. 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 2026-05-15. Always confirm the current price on the pharmacy site before purchase.

Pharmacy	Pack	Pack price	Monthly cost	Buy
Pet Drugs Online VMD approved · Free over £39	1 bottle	£8.50	£8.50 Best value	Buy from Pet Drugs Online
Animed Direct VMD approved · Free over £29, next-day available	1 bottle	£9.01	£9.01	Buy from Animed Direct
VetUK VMD approved · Free over £29	1 bottle	£9.60	£9.60	Buy from VetUK

What Tiacil Eye Drops treats

Topical gentamicin eye drops for bacterial conjunctivitis and ocular surface infections.

Why it costs more at the vet

Vetoquinol-branded eye drops; standard vet dispensing margin on a low-cost generic.

Ready to switch? It takes 5 minutes.

Email template, prescription steps and refill setup — the full path from "I just paid too much at the vet" to "I'm saving £X every month".

Open the 5-minute switch guide →

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. We have a short guide with a template email you can send to your practice.

Read the full prescription guide →

Common side effects

Local irritation

This is not a complete list. Always read the patient information leaflet and speak to your vet about side effects.

FAQ

Tiacil vs Isathal - which to choose?: Different antibiotics. The vet picks based on the suspected organism or culture.
Will my dog need a follow-up eye check?: Usually 5-7 days after starting drops to confirm resolution.

Related medications

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Maxitrol Eye Drops

Combination steroid + antibiotic eye drops for inflammatory eye conditions with suspected bacterial involvement.

Optimmune Eye Ointment

Topical ciclosporin ointment for keratoconjunctivitis sicca (dry eye, KCS) in dogs. Lifelong therapy for most cases.

Bacterial conjunctivitis in dogs and cats.

Track Tiacil Eye Drops price drops

We'll email when Tiacil Eye Drops drops in price at any of the pharmacies above.

Pricing data status: indicative. Last verified 2026-05-15. Pharmacies change prices regularly - always confirm before purchase. Not medical advice.