Important: Adverse event reports are voluntarily submitted and do not prove causation. Consult your veterinarian for medical decisions about your chicken.
131
Total Reports
91
Deaths Reported
6950.0%
Death Rate
0.2 yr
Avg Age at Report
Average weight at time of report: 1.0 kg (2.2 lbs)
Top Reported Reactions
Death 63
Lack of efficacy (protozoa) - Coccidia 25
Lack of efficacy - NOS 25
Increased mortality rate 15
Death by euthanasia 13
NT - Abnormal necropsy finding NOS 9
Musculoskeletal disorder NOS 7
Found dead 7
Enteritis 6
Loss of egg quantity 6
Overdose 6
Digestive tract disorder NOS 5
Central nervous system depression 5
Lameness 5
Liver disorder NOS 4
Most Referenced Drugs
Narasin + Nicarbazin 28
Narasin 28
Zoalene (3.5-Dinitro-O-Toluamide) 28
Wet-Milled Fenbendaz Oral Susp 19
Monensin Sodium 17
Narasin; Nicarbazin 12
Bacitracin Methylene Disalicylate 5
Hygromycin B 5
Lasalocid Sodium 4
Salinomycin 3
Beta-Mannanase 3
Avilamycin 2
Tylosin Tartrate 2
Eimeria Acervulina + Eimeria Maxima + Eimeria Tenella Live Oocysts 2
Coccidiosis Vaccine 2
Outcome Breakdown
Died
88 (51.2%)
Outcome Unknown
56 (32.6%)
Euthanized
16 (9.3%)
Recovered/Normal
7 (4.1%)
Recovered with Sequela
4 (2.3%)
Ongoing
1 (0.6%)
Gender Distribution
Female 40 (30.5%)
Mixed 39 (29.8%)
Male 29 (22.1%)
Unknown 23 (17.6%)
Reports by Year
| Year | Reports | Trend |
|---|---|---|
| 2011 | 6 | |
| 2012 | 14 | |
| 2013 | 14 | |
| 2014 | 5 | |
| 2015 | 8 | |
| 2016 | 6 | |
| 2017 | 6 | |
| 2018 | 7 | |
| 2019 | 21 | |
| 2020 | 14 | |
| 2021 | 10 | |
| 2022 | 4 | |
| 2023 | 3 | |
| 2024 | 6 | |
| 2025 | 7 | |
Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Rank #216 by report volume. Data reflects voluntary submissions and may not represent actual incidence rates.