Zinc is a common cause of toxicity, particularly in birds. While zinc is found as a herbal supplement, it can also be found in household products such as batteries, U.S. pennies, stainless steel, fluorescent lights and paints.

Signs and symptoms of toxicity: vomiting, diarrhea, increased thirst, extreme fatigue, refusal to eat, jaundice, difficulty breathing and swelling.

Toxic consumption: The minimum threshold for toxicity is not known. If exposure is suspected seek treatment as soon as possible.

References:
– Zinc. In: Plumb’s Veterinary Drugs. Tulsa (OK): Educational Concepts, L.L.C. [updated 8/14; accessed 8/27/15]. https://www.plumbsveterinarydrugs.com/#!/monograph/1821
– Papich MG. Saunders Handbook of Veterinary Drugs: Small and Large Animal. 3rd ed. St. Louis, MS: Elsevier Saunders; 2011.