Dog /

Terrier - Norwich

232 adverse event reports submitted to the FDA

Important: Adverse event reports are voluntarily submitted and do not prove causation. Consult your veterinarian for medical decisions about your dog.
232
Total Reports
7
Deaths Reported
300.0%
Death Rate
6.1 yr
Avg Age at Report
Average weight at time of report: 7.1 kg (15.7 lbs)

Top Reported Reactions

Vomiting 43
Lethargy (see also Central nervous system depression in 'Neurological') 37
Diarrhoea 28
Shaking 12
Emesis 12
Behavioural disorder NOS 12
Seizure NOS 11
INEFFECTIVE, ASCARIDS NOS 10
Trembling 10
Lack of efficacy - NOS 9
Lack of efficacy (endoparasite) - hookworm 9
Panting 7
Digestive tract disorder NOS 7
Decreased appetite 7
Lack of efficacy (endoparasite) - heartworm 7

Most Referenced Drugs

Milbemycin Oxime + Spinosad 75
Ivermectin + Pyrantel As Pamoate Salt 21
Pyrantel Pamoate;Sarolaner 18
Trilostane 16
Spinosad 15
Afoxolaner 11
Fluralaner Chew Tablets 7
Oclacitinib Maleate 7
Ivermectin 5
Milbemycin Oxime + Praziquantel 5
Meloxicam 4
Milbemycin Oxime 4
Ivermectin + Pyrantel 4
Sarolaner 4
Grapiprant 4

Outcome Breakdown

Recovered/Normal
89 (41.4%)
Outcome Unknown
64 (29.8%)
Ongoing
45 (20.9%)
Recovered with Sequela
10 (4.7%)
Euthanized
5 (2.3%)
Died
2 (0.9%)

Gender Distribution

Female 114 (49.1%)
Male 111 (47.8%)
Unknown 6 (2.6%)
Mixed 1 (0.4%)

Reports by Year

Year Reports Trend
2010 8
2011 12
2012 28
2013 18
2014 16
2015 23
2016 22
2017 13
2018 23
2019 6
2020 14
2021 13
2022 6
2023 12
2024 13
2025 5

Source: FDA Center for Veterinary Medicine — Adverse Event Reports. Rank #176 by report volume. Data reflects voluntary submissions and may not represent actual incidence rates.