Procarbazine
Also known as: Matulane, Natulan, Natulanar
> **CRITICAL SAFETY WARNING**: Procarbazine is a chemotherapy drug. Strict safety measures must be taken at home to protect human family members. - **Safe Handling**: Always wear disposable gloves when handling this medication. Wash your hands thoroughly after giving the dose. - **Waste Management**: Avoid direct contact with your pet's saliva, vomit, urine, or feces for several days after administration. Clean up accidents wearing gloves and dispose of waste in sealed plastic bags. - **When to Call the Vet**: Contact your veterinarian immediately if your pet shows signs of toxicity, including vomiting, lack of appetite, diarrhea, abnormal bleeding or bruising, severe depression, agitation, sores in the mouth, or lameness. - **Pregnancy Warning**: Pregnant women, nursing mothers, and individuals trying to conceive should not handle this medication.
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
- MOPP lymphoma rescue
- Lymphoma rescue (MOPP protocol)
- Granulomatous meningoencephalitis (GME)
How it is given
Possible side effects
- Nausea and vomiting
- Hepatotoxicity
- Myelosuppression (thrombocytopenia, leukopenia)
- Hemorrhagic gastritis
- CNS effects (sedation, agitation)
- Peripheral neuropathy (loss of tendon reflexes, paresthesias, myalgia)
Cautions & contraindications
- Known hypersensitivity to procarbazine
- Inadequate bone marrow reserve
- > **Hazardous Drug**: Procarbazine is a cytotoxic agent and a known teratogen (FDA Category D). Strict safe handling protocols must be followed by both veterinary staff and pet owners. - Use with extreme caution in patients with impaired **renal or hepatic function**. - Use with extreme caution when co-administering with other **CNS depressant drugs**. - Because it is often used in combination protocols (e.g., MOPP), myelosuppression and GI effects may be significantly enhanced.
Drug interactions
- Alcohol/Ethanol: May cause severe nausea and vomiting (disulfiram-like reaction).
- CNS Depressant Drugs (barbiturates, opiates, antihistamines, phenothiazines): Procarbazine can cause CNS depression; concurrent use can lead to severe depression. Coma and death have been reported with opiates.
- Foods with high tyramine content (aged cheese, yogurt): Serious hypertension may result due to procarbazine's MAOI activity.
- Sympathomimetics (phenylpropanolamine, etc.): Serious hypertension may result due to procarbazine's MAOI activity.
- Tricyclic Antidepressants (clomipramine, amitriptyline): Do not use concurrently due to MAOI activity; risk of serotonin syndrome or hypertensive crisis.
Frequently asked questions
What is Procarbazine used for in pets?
> **CRITICAL SAFETY WARNING**: Procarbazine is a chemotherapy drug. Strict safety measures must be taken at home to protect human family members. - **Safe Handling**: Always wear disposable gloves when handling this medication. Wash your hands thoroughly after giving the dose. - **Waste Management**: Avoid direct contact with your pet's saliva, vomit, urine, or feces for several days after administration. Clean up accidents wearing gloves and dispose of waste in sealed plastic bags. - **When to Call the Vet**: Contact your veterinarian immediately if your pet shows signs of toxicity, including vomiting, lack of appetite, diarrhea, abnormal bleeding or bruising, severe depression, agitation, sores in the mouth, or lameness. - **Pregnancy Warning**: Pregnant women, nursing mothers, and individuals trying to conceive should not handle this medication.
Is Procarbazine 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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