Health & WellnessCan Allegra or Zyrtec prevent my dog's seasonal allergy symptoms?
Unfortunately, by law it is illegal for the experts at Petco Pet Education Center, formerly Petcoach to recommend using any drug, including OTC drugs, without seeing the animal in person first. That's because doing so requires a veterinary client patient relationship which cannot be achieved via an internet forum. In addition, the experts cannot say for certain if a specific drug is safe for Dakota. I would give your vet a call to discuss if using an anti-histamine in addition to his prednisone is safe for him. Best of luck.
Updated on September 24th, 2025