Levothyroxine (Soloxine)
Brands: Soloxine, Thyro-Tabs
Levothyroxine treats hypothyroidism in pets by replacing deficient thyroid hormone.
Used for
- Hypothyroidism
How it is given
- Administration
- oral
- Frequency
- twice daily
- Duration
- lifelong treatment in most cases
- Storage
- Store in a cool, dry place away from sunlight
- Pregnancy safety
- caution
Always confirm the exact dose with your veterinarian before giving any medicine.
Typical dose ranges
cat
- Standard
- 0.05 mg per cat twice daily
dog
- Large dogs
- 0.1 mg per 10 pounds body weight twice daily
- Small dogs
- 0.1 mg per 10 pounds body weight twice daily
- Medium dogs
- 0.1 mg per 10 pounds body weight twice daily
Ranges are reference only. Your vet sets the dose for your pet's weight and condition.
Active ingredients
- Levothyroxine Sodium
Side effects
Common
- Increased appetite
- Weight loss
- Increased thirst and urination
Rare
- Diarrhea
Severe
- Rapid heart rate
Do not use when
- Untreated adrenal insufficiency
- Hypersensitivity to Levothyroxine
Interacts with
- Antacids
- Calcium supplements
- Iron supplements
Warnings
- Monitor thyroid levels regularly
- Adjust dose based on response
Levothyroxine (Soloxine) questions
What if I miss a dose?
Give the missed dose as soon as you remember, but skip it if it's almost time for the next dose.
Can Levothyroxine be used in pregnant pets?
Use with caution. Consult your vet for advice.
How soon will I see improvements?
Some improvement in symptoms may be seen within 1-2 weeks.
Is it safe to stop the treatment suddenly?
No, always consult your vet before making any changes to the dosage.
Can it be used with other medications?
Inform your vet about any other medications your pet is taking to avoid interactions.
Full drug detail
Overview
Levothyroxine, commonly known by brand names such as Soloxine, is a synthetic thyroid hormone used to treat hypothyroidism in pets. It is crucial in regulating metabolism and energy levels in affected animals.
How It Works
Levothyroxine is a synthetic form of the thyroid hormone thyroxine (T4), which is naturally produced by the thyroid gland. It works by supplementing the deficient hormone, thus normalizing metabolic processes in the body.
Uses & Indications
Levothyroxine is primarily used to treat hypothyroidism in dogs and cats. This condition occurs when the thyroid gland does not produce enough hormones, leading to symptoms like lethargy, weight gain, and skin issues.
Dosage Guidelines
The dosage of Levothyroxine varies based on the size and specific needs of the animal. Always follow your veterinarian's prescription.
- Dogs:
- Small: 0.1 mg per 10 pounds body weight twice daily
- Medium: 0.1 mg per 10 pounds body weight twice daily
- Large: 0.1 mg per 10 pounds body weight twice daily
- Cats:
- Standard: 0.05 mg per cat twice daily
Administration
Levothyroxine is administered orally in the form of tablets or capsules. It should be given as prescribed by your veterinarian, usually twice daily.
Side Effects
Common
- Increased appetite
- Weight loss
- Increased thirst and urination
Rare
- Diarrhea
Severe
- Rapid heart rate (consult a veterinarian immediately)
Precautions & Warnings
Levothyroxine should not be used in animals with untreated adrenal insufficiency or hypersensitivity to the drug. It is important to monitor thyroid hormone levels regularly to avoid over-treatment.
Drug Interactions
Levothyroxine may interact with:
- Antacids
- Calcium supplements
- Iron supplements
Storage
Store Levothyroxine in a cool, dry place away from direct sunlight and moisture.
FAQ
- What if I miss a dose?
- Give the missed dose as soon as you remember, but skip it if it's almost time for the next dose.
- Can Levothyroxine be used in pregnant pets?
- Use with caution. Consult your vet for advice.
- How soon will I see improvements?
- Some improvement in symptoms may be seen within 1-2 weeks.
- Is it safe to stop the treatment suddenly?
- No, always consult your vet before making any changes to the dosage.
- Can it be used with other medications?
- Inform your vet about any other medications your pet is taking to avoid interactions.