Photina Red Leaf
Nandina Photina spp.
Photinia Red Leaf (Photinia spp.), an ornamental shrub grown for its vibrant red new foliage, is mildly toxic to cats. Like many members of the rose family (Rosaceae), Photinia contains cyanogenic glycosides — primarily prunasin — in its leaves and stems. These compounds release hydrogen cyanide when metabolised, though concentrations are typically low enough that serious toxicity requires ingestion of large amounts.
Important Notes
Toxic compounds: prunasin (cyanogenic glycoside); young red leaves contain higher concentrations than mature green leaves
Mechanism: prunasin releases HCN via beta-glucosidase, inhibiting cellular respiration at high doses
Symptoms: drooling, vomiting, lethargy with minor ingestion; heavy ingestion may cause laboured breathing and weakness
The attractive red foliage may make this shrub appealing to cats outdoors
Contact your vet if your cat ingests a significant amount of leaves
Potentially Toxic Parts
Leaf
Seed
Fruit
Possible Symptoms Reported in Cats
Dilated pupils, sudden collapse, muscle seizures, convulsions, coma, and death
Neurological · Rapidly, often within 10 to 60 minutes
Vomiting, diarrhea, excessive drooling, and almond-flavored breath
Gastrointestinal · Rapidly, often within 10 to 60 minutes
Tachypnea (rapid breathing), severe respiratory distress, panting, and gasping for breath
Respiratory · Rapidly, often within 10 to 60 minutes
Unusually bright red or pink gums (brick red mucous membranes), hypotension (low blood pressure), and cardiac arrhythmias
Gastrointestinal · Rapidly, often within 10 to 60 minutes
Disclaimer: This summary was compiled from multiple sources and is for informational use only. It is not a diagnosis or treatment plan. Toxicity can vary based on the substance, amount, plant part, and individual cat. If you think your cat may have been exposed to a toxic substance, contact a veterinarian right away.