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Directory Entry

Procarbazine in Veterinary Oncology: MOPP/LOPP Component and Safety Profile

Chemotherapy · Prescription Drug · Single-agent Chemotherapy · Methylhydrazine antineoplastic agents · Dogs & Cats · During Chemotherapy · New Diagnosis
Common name: procarbazineEditorial source check: Dog Tumor Editorial Team (editorial review; not licensed veterinary review)Last reviewed: Aug 12, 2026Official link: Visit
Directory entry:This page explains what the product, drug, herb, chemotherapy approach, or supportive-care option is. For step-by-step use or monitoring, read related Guides and consult a veterinarian.
Entry kind
Generic drug
Product family
Methylhydrazine antineoplastic agents

Quick summary

procarbazine is covered as methylhydrazine antineoplastic agents; hazardous antineoplastic medicine, with species, evidence, regulatory, safety, interaction and monitoring boundaries for a veterinarian-led decision.

What it is

Methylhydrazine antineoplastic agents; hazardous antineoplastic medicine. Procarbazine.

Active ingredients / formula

Procarbazine.

Mechanism / rationale

Its mechanism is incompletely defined but includes inhibition of DNA, RNA and protein synthesis, likely through alkylating metabolites; it can cross the blood-brain barrier.

How it is discussed in tumor care

Procarbazine is a named component of MOPP and LOPP lymphoma protocols and has been discussed for selected brain-tumour or inflammatory contexts. A component page does not itself define a complete protocol.

Potential role

Procarbazine is a named component of MOPP and LOPP lymphoma protocols and has been discussed for selected brain-tumour or inflammatory contexts. A component page does not itself define a complete protocol.

Typical use context

Oral hazardous chemotherapy as part of a specialist protocol

Evidence snapshot

Veterinary evidence is strongest as part of combination lymphoma regimens rather than as an isolated universal agent. MOPP and LOPP have different alkylators and cannot be treated as the same schedule.

Safety notes

Nausea, vomiting, diarrhoea and marrow suppression are recognised. It is hazardous oral chemotherapy, and human product interaction warnings require veterinary pharmacy review before use in an animal.

Interactions / cautions

Other marrow suppressants, serotonergic or sympathomimetic medicines and dietary or drug interactions described for procarbazine require case-specific assessment. Owners should not build an interaction list from human internet advice alone.

Regulatory status

No FDA-approved canine or feline oncology indication was established for this medicine in this audit. In the United States, veterinary oncology use of an approved human or animal formulation is extra-label and must occur under a veterinarian within AMDUCA conditions and a valid VCPR.

Regions, labels and market differences

Multi-region specialist use; product availability, extra-label prescribing law and pharmacy handling vary by jurisdiction.

Monitoring plan

The oncology team reviews all medicines and supplements, establishes baseline blood counts and organ function and sets protocol-specific follow-up. Fever, bleeding, severe gastrointestinal signs or neurologic change require prompt contact. No dose or food rule is supplied here.

Questions to ask your veterinarian

  • Does the confirmed diagnosis and species match the evidence population?
  • What is labelled, conditionally authorised or extra-label in this region?
  • Which objective findings will define benefit, toxicity and a change in plan?
  • What household handling, waste and urgent-contact instructions apply?

Sources and further reading