Drug profile

The FDA adverse-event record for Selamectin;Sarolaner

9,343 FDA reports name Selamectin;Sarolaner, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#28 of 2,679
by report volume (all drugs)
9,343
adverse-event reports
2.3%
death-coded share
Cat
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Selamectin;Sarolaner ranks #28 of 2679 by total reports (9,343) and #969 of 1130 by death-coded share (2.3%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1)
97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1)
#28
This drug, reports of 2679
#969
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Selamectin;Sarolaner has 9,343 reports now versus 9,081 in that prior snapshot: 262 more (2.9%).

Report change
+262
Death-coded reports
+6
Death-coded share
+0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

Subscribe to Selamectin;Sarolaner changes

Signature read: 9,343 reports place Selamectin;Sarolaner in the upper third of FDA AER volume (#28 of 2,679).

Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
9,343
Total Reports
211
Deaths Reported
2.3%
Death-coded share of reports

Active Ingredients

Selamectin;Sarolaner

Administration Routes

TopicalUnknownOralSubcutaneousOphthalmicRespiratory (Inhalation)Auricular (Otic)OtherIntraocular

Species Affected

Cat 7,795
Unknown 1,405
Human 88
Dog 45
Rabbit 3
Bobcat 2
Lynx 2
Other 1
Cattle 1
Hedgehog 1

Most Affected Breeds

Domestic Shorthair 4,530
Unknown 1,500
Cat (other) 1,338
Domestic Longhair 489
Domestic Mediumhair 435
Siamese 151
Maine Coon 145
Cat (unknown) 118
American Curl Shorthair 106
Ragdoll 82

Most Reported Reactions

Application site hair loss 2,295
Application site alopecia 708
Application site scab 684
Lack of efficacy (ectoparasite) - flea 680
Lethargy (see also Central nervous system depression in 'Neurological') 661
Vomiting 591
Underfilling, Tubes 576
Application site reddening 495
Application site irritation 343
Lethargy (see also Central nervous system depression in Neurological) 310
Tubes, Leaking 295
Anorexia 292

Outcome Breakdown

Ongoing
3,793 (47.7%)
Outcome Unknown
2,906 (36.6%)
Recovered/Normal
1,031 (13.0%)
Died
132 (1.7%)
Euthanized
79 (1.0%)
Recovered with Sequela
4 (0.1%)

Selamectin;Sarolaner: low death-coded share in the FDA AER row

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Selamectin;Sarolaner, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

What to do with this drug

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Selamectin;Sarolaner (#28 of 2,679 by report volume); death-coded 2.3%. PlainBreed drug row · report volume stamp 9,343 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →