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If your cat ate narrowleaf milkweed — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Narrowleaf Milkweed is toxic to cats (ASPCA).

Pet emergency

My cat ate Narrowleaf Milkweed — what to do

Step by step

  1. Take narrowleaf milkweed away and remove any plant material from your cat's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My cat ate narrowleaf milkweed — FAQ

Is narrowleaf milkweed poisonous to cats?

Yes — the ASPCA lists Narrowleaf Milkweed (Asclepias stenophylla) as toxic to cats. ASPCA lists milkweed (Asclepias spp.) as toxic to dogs and cats. Narrow-leaved Asclepias species in particular are associated with neurotoxic cardenolide compounds that cause tremors, incoordination, and weakness in addition to gastrointestinal signs (vomiting, diarrhea, drooling); cardiac effects including arrhythmia are also possible with significant ingestion.

How serious is it if my cat ate narrowleaf milkweed?

Narrowleaf Milkweed is toxic to cats and reactions can be significant, so treat any ingestion as urgent. Call your vet or poison control on (888) 426-4435 straight away rather than waiting to see if symptoms develop.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. ASPCA lists milkweed (Asclepias spp.) as toxic to dogs and cats. Narrow-leaved Asclepias species in particular are associated with neurotoxic cardenolide compounds that cause tremors, incoordination, and weakness in addition to gastrointestinal signs (vomiting, diarrhea, drooling); cardiac effects including arrhythmia are also possible with significant ingestion. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my cat vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep narrowleaf milkweed well out of reach, or swap it for an ASPCA non-toxic plant — see the best cats-safe plants list.

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