Drug profile

The FDA adverse-event record for Merial La Polypropylene Syringe

84 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Merial La Polypropylene Syringe. See the species affected, top reactions, and outcomes below.

84
adverse-event reports
4.8%
death-coded share
Unknown
most-reported species
21
Stopper, abnormal - 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.
84
Total Reports
4
Deaths Reported
4.8%
Death Rate

Active Ingredients

Merial La Polypropylene Syringe

Administration Routes

UnknownSubcutaneousUnassignedParenteralIntramuscular

Species Affected

Unknown 47
Cattle 35
Human 2

Most Affected Breeds

Unknown 49
Aberdeen Angus 14
Crossbred Bovine/Cattle 7
Cattle (other) 5
Cattle (unknown) 5
Beefmaster 3
Charolais 1

Most Reported Reactions

Stopper, abnormal 21
Uncoded sign 14
Lack of efficacy - NOS 12
Caps, Abnormal 8
Device Defective NOS 8
Systemic disorder NOS 8
Low weight gain 8
Lack of efficacy (endoparasite) - NOS 8
Scratching 6
Hair loss NOS 5
Poor coat condition 5
Death 5

Outcome Breakdown

Outcome Unknown
28 (75.7%)
Died
4 (10.8%)
Ongoing
4 (10.8%)
Recovered/Normal
1 (2.7%)

Merial La Polypropylene Syringe Adverse Event Insights

84 reports name Merial La Polypropylene Syringe; 4 recorded a death outcome (4.8% of reported events, not a population-level mortality rate). Active ingredient: Merial La Polypropylene Syringe. Administration routes: Unknown, Subcutaneous, Unassigned, Parenteral.

By species: Unknown (47 reports), Cattle (35 reports), Human (2 reports). By breed: Unknown (49), Aberdeen Angus (14), Crossbred Bovine/Cattle (7).

Leading clinical signs: Stopper, abnormal (21), Uncoded sign (14), Lack of efficacy - NOS (12), Caps, Abnormal (8). Outcome, 37 coded reports: Outcome Unknown leads at 75.7%.

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.