Drug profile

The FDA adverse-event record for Ivermectin Chewable 165Mcg

79 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Ivermectin Chewable 165Mcg. See the species affected, top reactions, and outcomes below.

79
adverse-event reports
0.0%
death-coded share
Cat
most-reported species
35
Vomiting - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
79
Total Reports
0
Deaths Reported
0.0%
Death Rate

Active Ingredients

Ivermectin Chewable 165Mcg

Administration Routes

OralUnknown

Species Affected

Cat 49
Unknown 29
Dog 1

Most Affected Breeds

Unknown 30
Domestic Shorthair 23
Cat (unknown) 8
Himalayan 4
Domestic Longhair 3
Siamese 3
Domestic Mediumhair 2
Bengal 1
Sphynx 1
Spitz - German Pomeranian 1

Most Reported Reactions

Vomiting 35
Tablets, Abnormal 22
Uncoded sign 21
Lethargy (see also Central nervous system depression in 'Neurological') 6
Containers, Damaged 4
Diarrhoea 3
Behavioural disorder NOS 2
Application site hair loss 2
Anorexia 2
Other abnormal test result NOS 2
Digestive tract disorder NOS 2
Seal, Abnormal 2

Outcome Breakdown

Recovered/Normal
25 (50.0%)
Outcome Unknown
22 (44.0%)
Ongoing
3 (6.0%)

Ivermectin Chewable 165Mcg Adverse Event Insights

79 reports name Ivermectin Chewable 165Mcg; 0 recorded a death outcome (0.0% of reported events, not a population-level mortality rate). Active ingredient: Ivermectin Chewable 165Mcg. Administration routes: Oral, Unknown.

By species: Cat (49 reports), Unknown (29 reports), Dog (1 reports). By breed: Unknown (30), Domestic Shorthair (23), Cat (unknown) (8).

Leading clinical signs: Vomiting (35), Tablets, Abnormal (22), Uncoded sign (21), Lethargy (see also Central nervous system depression in 'Neurological') (6). Outcome, 50 coded reports: Recovered/Normal leads at 50.0%.

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.

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

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.