Drug profile

The FDA adverse-event record for Iron Supplement

18 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Iron Supplement. See the species affected, top reactions, and outcomes below.

18
adverse-event reports
33.3%
death-coded share
Dog
most-reported species
6
Lethargy (see also Central nervous system depression in Neurological) - 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.
18
Total Reports
6
Deaths Reported
33.3%
Death Rate

Active Ingredients

Iron Supplement

Administration Routes

UnknownOralSubcutaneous

Species Affected

Dog 11
Cat 7

Most Affected Breeds

Russian 3
Crossbred Canine/dog 3
Domestic Longhair 2
Retriever - Labrador 2
Shih Tzu 1
Cat (other) 1
Shar Pei 1
Terrier - Scottish 1
Terrier - West Highland White 1
Cat (unknown) 1

Most Reported Reactions

Lethargy (see also Central nervous system depression in Neurological) 6
Lethargy (see also Central nervous system depression in 'Neurological') 4
Weight loss 4
Anorexia 4
Anaemia NOS 4
Death by euthanasia 4
Vomiting 3
Abnormal radiograph finding 3
Abnormal ultrasound finding 3
Reluctant to move 3
Other abnormal test result NOS 3
Non-regenerative anaemia 3

Outcome Breakdown

Ongoing
8 (44.4%)
Euthanized
4 (22.2%)
Recovered/Normal
2 (11.1%)
Outcome Unknown
2 (11.1%)
Died
2 (11.1%)

Iron Supplement Adverse Event Insights

18 reports name Iron Supplement; 6 recorded a death outcome (33.3% of reported events, not a population-level mortality rate). Active ingredient: Iron Supplement. Administration routes: Unknown, Oral, Subcutaneous.

By species: Dog (11 reports), Cat (7 reports). By breed: Russian (3), Crossbred Canine/dog (3), Domestic Longhair (2).

Leading clinical signs: Lethargy (see also Central nervous system depression in Neurological) (6), Lethargy (see also Central nervous system depression in 'Neurological') (4), Weight loss (4), Anorexia (4). Outcome, 18 coded reports: Ongoing leads at 44.4%.

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.