Overview
Mirtazapine is a tetracyclic antidepressant primarily used in veterinary medicine to stimulate appetite and reduce nausea in pets. It is especially useful in cats and dogs who are experiencing anorexia or conditions leading to decreased food intake.
How It Works
Mirtazapine works by inhibiting certain receptors in the brain, which helps in increasing serotonin levels. This action has secondary benefits of reducing nausea and stimulating appetite.
Uses & Indications
Mirtazapine is commonly used in pets for:
- Stimulating appetite
- Reducing nausea
- Managing weight loss associated with chronic illness
Dosage Guidelines
Dog
- Small Dogs: 1.5 mg once daily
- Medium Dogs: 3 mg once daily
- Large Dogs: 7.5 mg once daily
Cat
- Standard: 1.88 mg every 24-48 hours
Administration
Mirtazapine is administered orally, often in tablet form.
Frequency
Typically administered once daily, but frequency can vary based on veterinary advice.
Duration
The duration of treatment is usually determined by the underlying condition and the pet's response to the medication.
Side Effects
Common
- Sedation
- Increased vocalization
Rare
- Hyperactivity
Severe
- Rapid heart rate (seek veterinary attention)
Precautions & Warnings
- Not for use in pets with known hypersensitivity.
- Use caution in pets with liver disease.
- Monitor for signs of serotonin syndrome.
Drug Interactions
- Tramadol
- Monoamine oxidase inhibitors (MAOIs)
Storage
Store at room temperature, away from moisture and direct sunlight.
FAQ
1. Can I use Mirtazapine for my pet's anxiety?
Mirtazapine is not typically used for anxiety in pets.
2. How long does it take to see effects?
Effects on appetite can be seen within 1-2 days.
3. What should I do if I miss a dose?
Give the missed dose as soon as you remember, but skip it if it's near the next dose.
4. Can Mirtazapine be used long-term?
It can be used long-term under veterinary supervision.
5. Is Mirtazapine safe for pregnant pets?
Use caution and consult with a veterinarian.
Contraindications
- Pets with allergies to Mirtazapine
- Concurrent use with MAOIs
Warnings
- Monitor for serotonin syndrome symptoms.
- Do not abruptly stop medication without consulting a vet.
Interactions
- Tramadol
- MAOIs
Storage
Store at room temperature, away from moisture and heat.
Is Prescription Required
Yes
Is Controlled
No
Pregnancy Safety
Caution