Ingredients / Levothyroxine
Levothyroxine: FDA adverse event reports for pets
Reports received through June 26, 2026. Data and limitations.
3,445Total reports
3,244Dog reports
29Cat reports
FDA-approved products with this ingredient (Green Book)
All approved products with this ingredient, for any species.
- Thyro-Tabs® Canine (Lloyd, Inc.)
- ThyroKare™ (Neogen Corp.)
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).