Drug profile

The FDA adverse-event record for Interceptor Plus

183 FDA reports name Interceptor Plus, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#559 of 2,679
by report volume (all drugs)
183
adverse-event reports
4.4%
death-coded share
Dog
most-reported species

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Interceptor Plus ranks #558 of 2679 by total reports (183) and #825 of 1130 by death-coded share (4.4%). 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)
#558
This drug, reports of 2679
#825
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. Interceptor Plus has 183 reports now versus 179 in that prior snapshot: 4 more (2.2%).

Report change
+4
Death-coded reports
+0
Death-coded share
−0.1 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 Interceptor Plus changes

Signature read: 183 reports place Interceptor Plus in the upper third of FDA AER volume (#559 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.
183
Total Reports
8
Deaths Reported
4.4%
Death-coded share of reports

Active Ingredients

Interceptor Plus

Administration Routes

OralUnknownSubcutaneous

Species Affected

Dog 183

Most Affected Breeds

Retriever - Labrador 26
Crossbred Canine/dog 22
Retriever - Golden 14
Shepherd Dog - Australian 8
Boxer (German Boxer) 8
Shepherd Dog - German 8
Dog (unknown) 6
Terrier - Yorkshire 6
Terrier (unspecified) 6
Siberian Husky 5

Most Reported Reactions

Lack of efficacy (endoparasite) - heartworm 78
Vomiting 28
Seizure NOS 21
Diarrhoea 17
Emesis (multiple) 6
Lethargy (see also Central nervous system depression in 'Neurological') 5
Decreased appetite 5
Mental impairment NOS 5
Ataxia 5
Panting 5
Tremor 5
Walking difficulty 5

Outcome Breakdown

Ongoing
104 (56.8%)
Outcome Unknown
41 (22.4%)
Recovered/Normal
30 (16.4%)
Died
5 (2.7%)
Euthanized
3 (1.6%)

Interceptor Plus: 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 Interceptor Plus, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (183 here).

Similar death-coded share

Nearest other drugs by death-coded share (4.4% here), distinct from the volume row.

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 Interceptor Plus (#559 of 2,679 by report volume); death-coded 4.4%. PlainBreed drug row · report volume stamp 183 · 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 →