Is Elderberry Toxic to Cats?
Also known as: American Elder, Black Elder · Sambucus canadensis
What makes it toxic
Cyanogenic glycosides concentrated in the leaves, stems, bark, roots and seeds of unripe berries. Crushed tissue can release cyanide-like compounds into the gut.
Warning signs to watch for
Drooling, vomiting, diarrhea and lethargy within hours. Larger ingestions of leaves or stems can add weakness, rapid breathing and incoordination.
What to do if your cat eats it
Remove plant material, note which parts were eaten, and offer water. Call your vet the same day for leaf or stem chewing; breathing changes are an ER sign.
Common questions
Are elderberries safe if only the ripe fruit was eaten?
Ripe fruit flesh is the least toxic part, but cats rarely separate fruit from leaves. Monitor closely and assume some leaves may have been involved.
Is cooked elderberry syrup dangerous to cats?
Commercial syrups are heat-processed to destroy the glycosides, but they often contain sweeteners and additives. Keep all human elderberry products away from cats.
More plants checked for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.