Signs / Lack of efficacy (roundworm)
Lack of efficacy (roundworm): medicines most often named in FDA reports
Reports received through June 26, 2026. Data and limitations.
2,765Total reports
2,685Dog reports
59Cat reports
Species named in reports
These are the ingredients most often named in the supplied reports, displayed alphabetically. One report may name multiple ingredients; counts must not be used to compare products.