Epirubicin
Also known as: Pharmorubicin
Epirubicin is a potent chemotherapy drug used to treat various cancers in pets. - **Handling:** Chemotherapy drugs can be hazardous. Follow your veterinarian's instructions for handling your pet's waste (urine/feces) for a few days after treatment. - **Side Effects:** Watch for loss of appetite, vomiting, or diarrhea. Contact your vet immediately if these occur. - **Heart Health:** This drug can occasionally affect the heart, so your vet may recommend heart monitoring (like an ECG or ultrasound) before and during treatment. - **Infection Risk:** Your pet's white blood cell count may drop, making them more susceptible to infections. Keep them away from sick animals.
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
What it is used for
- Feline injection site sarcoma
- Lymphoma, splenic haemangiosarcoma, histiocytic sarcoma, and other sarcomas/carcinomas
How it is given
Possible side effects
- Acute anaphylaxis
- Dose-dependent cumulative cardiotoxicity (cardiomyopathy, congestive heart failure)
- Tachycardia and arrhythmias (during administration)
- Anorexia
- Vomiting
- Pancreatitis
- Severe leucopenia
- Thrombocytopenia
- Haemorrhagic gastroenteritis
- Nephrotoxicity
- Severe tissue necrosis (if extravasated)
Cautions & contraindications
- No specific absolute contraindications listed, but use with extreme caution in patients with pre-existing cardiac disease or the ABCB1 (MDR1) mutation.
- > **Extravasation Risk:** Severe tissue necrosis will occur if extravasated. Use of an indwelling catheter taped in place is essential. Administer into the side port of a freely running IV infusion of 0.9% NaCl over a minimum of 10 minutes. > **Cardiotoxicity:** May cause dose-dependent cumulative cardiotoxicity, though possibly at a lower incidence than doxorubicin. Caution in patients with pre-existing cardiac disease. > **Myelosuppression:** Suspend treatment if neutrophils drop below 2.5 × 10^9/L or platelets below 50 × 10^9/L. Reduce dose by 10-25% if haematological or GI toxicity is recurrent. > **Genetics:** Dogs with the **ABCB1 (MDR1)** mutation may be at higher risk of toxicity. **Clinical Pearl:** Premedication with IV chlorphenamine or dexamethasone is recommended to prevent acute anaphylactic reactions.
Drug interactions
- Heparin: Incompatible; a precipitate will form if mixed.
- Cyclophosphamide: Increased risk of myelosuppression when used in combination.
- Cimetidine: Increases the area under the dose curve (AUC) of epirubicin by 50%; should not be used concurrently.
Frequently asked questions
What is Epirubicin used for in pets?
Epirubicin is a potent chemotherapy drug used to treat various cancers in pets. - **Handling:** Chemotherapy drugs can be hazardous. Follow your veterinarian's instructions for handling your pet's waste (urine/feces) for a few days after treatment. - **Side Effects:** Watch for loss of appetite, vomiting, or diarrhea. Contact your vet immediately if these occur. - **Heart Health:** This drug can occasionally affect the heart, so your vet may recommend heart monitoring (like an ECG or ultrasound) before and during treatment. - **Infection Risk:** Your pet's white blood cell count may drop, making them more susceptible to infections. Keep them away from sick animals.
Is Epirubicin safe for my pet?
Dosage must be set by your veterinarian for your specific pet. Never give human medication or another pet’s prescription without veterinary guidance.
This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.
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