Drug profile

The FDA adverse-event record for Lansoprazole

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

13
adverse-event reports
0.0%
death-coded share
Dog
most-reported species
2
Accidental exposure - 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.
13
Total Reports
0
Deaths Reported
0.0%
Death Rate

Active Ingredients

Lansoprazole

Administration Routes

OralUnknown

Species Affected

Dog 9
Human 4

Most Affected Breeds

Unknown 4
Dog (unknown) 2
Terrier - Cairn 1
Shepherd Dog - Australian 1
Spitz - German Pomeranian 1
Schnauzer - Miniature 1
Dalmatian 1
Shih Tzu 1
Poodle - Miniature 1

Most Reported Reactions

Accidental exposure 2
Decreased appetite 2
Emesis 2
Bloody diarrhoea 2
Lethargy (see also Central nervous system depression in 'Neurological') 2
Not drinking 2
Increased heart rate 1
Diarrhoea 1
Headache 1
Stomach cramp 1
Tiredness 1
Bad taste 1

Outcome Breakdown

Ongoing
5 (38.5%)
Outcome Unknown
4 (30.8%)
Recovered with Sequela
2 (15.4%)
Recovered/Normal
2 (15.4%)

Lansoprazole Adverse Event Insights

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

By species: Dog (9 reports), Human (4 reports). By breed: Unknown (4), Dog (unknown) (2), Terrier - Cairn (1).

Leading clinical signs: Accidental exposure (2), Decreased appetite (2), Emesis (2), Bloody diarrhoea (2). Outcome, 13 coded reports: Ongoing leads at 38.5%.

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.