Ingredients / Diphenhydramine
Diphenhydramine: FDA adverse event reports for pets
Reports received through June 26, 2026. Data and limitations.
4,982Total reports
4,608Dog reports
351Cat reports
FDA-approved products with this ingredient (Green Book)
No matching Green Book entry is supplied in this dataset. This alone does not establish regulatory status.
No Green Book record matches this ingredient name. It may be a human medicine used by veterinarians, a compounded product, a supplement or a product regulated by another agency; this alone does not establish regulatory status.
Brand names come only from the Green Book. Brand names in FDA's public report data are masked, so counts cannot be attributed to any brand. Ingredient names in the reports are written many ways; we group them under one ingredient name and count each report once per ingredient (method).