Soloxine 0.3 mg Tablet
Active ingredient: L Thyroxine Sodium
Form
Tablet
Species
Manufacturer
Virbac
VMD MA No.
05653/4137
What it's used for
For the long term treatment of thyroid insufficiency in dogs.
Full indications, dosage and side effects ↓The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.
Paying less for L Thyroxine Sodium
-
1
Ask your vet for a written prescription
They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.
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2
Fill it at a registered online retailer
The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.
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Prescription required
Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.
Soloxine 0.3 mg Tablet — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.
in absorption and metabolism this is frequently too low and doses of up to 44 μg/kg bodyweight/day may be
required. The dosage should be adjusted for the individual case based on the clinical response of the patient
and laboratory investigations and should be administered daily.
For oral administration.
Part 1B:SUMMARY OF PRODUCT CHARACTERISTICSPage:1B - 3Product:SOLOXINECompany:Arnolds Veterinary ProductsDate:02.07.2010
Date issued: 02.07.2010 Supersedes 09.01.2004
Do not use in animals suffering from thyrotoxicosis or uncorrected adrenal insufficiency.
Thyrotoxicosis is unusual, but may develop in dogs receiving high doses or in those with impaired metabolism
(i.e. renal or hepatic insufficiency).
Clinical signs include panting, nervousness, tachycardia, aggressive behaviour, polyuria, polydipsia,
polyphagia and weight loss.
i) Special precautions for use in animals
Appropriate laboratory tests should be conducted to confirm the diagnosis and ensure correct dosage.
Caution should be exercised in the treatment of dogs with clinically significant cardiac disease, hypertension
or any disease rendering the animal susceptible to sharply increased metabolic rate. In such cases,
consideration should be given to reducing the starting dose, increasing the dose at intervals whilst monitoring
Part 1B:SUMMARY OF PRODUCT CHARACTERISTICSPage:1B - 2Product:SOLOXINECompany:Arnolds Veterinary ProductsDate:02.07.2010
Date issued: 02.07.2010 Supersedes 09.01.2004
all clinical signs. Dogs with concurrent hypoadrenocorticism should be stabilised with appropriate steroid
therapy before commencing treatment with levothyroxine sodium.
The effects of thyroxine therapy are slow in being manifested.
ii) Special precautions to be taken by the person administering the veterinary medicinal product to
animals
In case of accidental ingestion, seek medical advice immediately and show the doctor the label.
Wash hands after use.
iii) Other precautions
None.
thyroid hormone treatment commences. Dosages of insulin may need to be increased due to thyroid hormone
enhancement of glucose absorption, glycogenolysis and gluconeogenesis.
o
C.
Protect from light.
5.
This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.
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Other Products Containing L Thyroxine Sodium
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Leventa 1 mg/ml Oral Solution for Dogs
POM-VIntervet International B.V.
Leventa 1 mg/ml Oral Solution for Dogs
POM-VIntervet International B.V.
Soloxine 0.1 mg Tablet
POM-VVirbac
Soloxine 0.2 mg Tablet
POM-VVirbac
Soloxine 0.5 mg Tablet
POM-VVirbac
Soloxine 0.8 mg Tablet
POM-VVirbac
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