Effexor / Venlafaxine
ToxicSNRI causing serotonin syndrome: agitation, tremors, elevated HR. Cats especially sensitive.
Quick Answer: Is Effexor / Venlafaxine Toxic to Dogs or Cats?
Use this short answer first, then read symptoms and what to do next.
Is Effexor / Venlafaxine toxic to dogs?
Yes. Effexor / Venlafaxine is toxic to dogs and should be avoided. Contact a veterinarian if your pet ate it or has symptoms.
Is Effexor / Venlafaxine toxic to cats?
Yes. Effexor / Venlafaxine is toxic to cats and should be avoided. Contact a veterinarian if your pet ate it or has symptoms.
Symptoms to watch for
Dilated pupils, agitation, vomiting, tremors, rapid heart rate
What should I do now?
Contact vet immediately. Serotonin syndrome can be life-threatening.
Dogs
Unsafe
Cats
Unsafe
Risk level
Toxic
Symptoms
Dilated pupils, agitation, vomiting, tremors, rapid heart rate
What to do now
Contact vet immediately. Serotonin syndrome can be life-threatening.
Explore Related Safety Hubs
Use these hub pages for broader dog, cat, cleaner, and emergency planning guidance.
Dog Toxicity Guide
Compare Effexor / Venlafaxine with common dog food, plant, medication, and household toxicity risks.
Open hubCat poisoningCat Toxicity Guide
See cat-specific guidance for Effexor / Venlafaxine, plants, cleaners, foods, and medication risks.
Open hubEmergency planningVet Cost Hub
Plan for emergency exams, toxin ingestion care, hospitalization, and insurance decisions.
Open hubSymptoms to Watch For
Dilated pupils, agitation, vomiting, tremors, rapid heart rate
What to Do
Contact vet immediately. Serotonin syndrome can be life-threatening.
Plan ahead for emergency vet bills
Poisoning, broken bones, and emergency surgery can get expensive quickly. Compare costs and accident coverage before you need it.
Pet Poisoning Emergency Checklist
A one-page checklist for symptoms, product labels, emergency contacts, and what to bring to the clinic.
Clinical References
Quick Answers
Is Effexor / Venlafaxine poisonous to dogs?
Is Effexor / Venlafaxine toxic to cats?
What symptoms can Effexor / Venlafaxine cause in pets?
What should I do if my pet ate Effexor / Venlafaxine?
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