Animal drug adverse event reports

MSK

Cat · Reactions: Lack of efficacy - NOS, Medication error NOS

2026-06-25VeterinarianSerious

Treated for ae

true

Unique aer ID number

USA-USFDACVM-2026-US-035615

Original receive date

20260625

Number of animals affected

Primary reporter

Veterinarian

Number of animals treated

Secondary reporter

Animal Owner

Onset date

20260508

Foreign or domestic

Domestic

Report ID

N012204

Type of information

Lack Of Expected Effectiveness

Serious ae

true

Reaction

Veddra version
21
Veddra term code
1039
Veddra term name
Lack of efficacy - NOS
Number of animals affected
1
Accuracy
Actual
Veddra version
21
Veddra term code
2282
Veddra term name
Medication error NOS
Number of animals affected
1
Accuracy
Actual

Receiver

Organization: Food and Drug Administration Center for Veterinary Medicine
Street address: 7500 Standish Place (HFV-210) Room N403
City: Rockville
State: MD
Postal code: 20855
Country: USA

Drug

First exposure date
20260410
Last exposure date
20260530
Administered by
Unknown
Route
Unknown
Used according to label
false
Off label use
Indication Off-Label
Ae abated after stopping drug
false
Ae reappeared after resuming drug
false
Lot number
not given
Brand name
MSK
Dosage form
Suspension
Atc vet code
QH02AB04
Dose
Numerator
10
Numerator unit
Milligram
Denominator
1
Denominator unit
Animal
Manufacturer
Name
MSK
Registration number
USA-USFDACVM-N012204
Active ingredients
1. Name
  Methylprednisolone Acetate
  Dose
  Numerator
  1
  Numerator unit
  Unknown
  Denominator
  1
  Denominator unit
  Unknown
First exposure date
20260518
Administered by
Animal Owner
Route
Topical
Lot number
not given
Brand name
MSK
Dosage form
Unassigned
Dose
Numerator
5
Numerator unit
Milligram
Denominator
1
Denominator unit
Animal
Manufacturer
Name
MSK
Active ingredients
1. Name
  Fluoxetine
  Dose
  Numerator
  1
  Numerator unit
  Unknown
  Denominator
  1
  Denominator unit
  Unknown
First exposure date
20260518
Administered by
Animal Owner
Route
Oral
Lot number
not given
Brand name
MSK
Dosage form
Unassigned
Frequency of administration
Value
12
Unit
Hour
Dose
Numerator
100
Numerator unit
Milligram
Denominator
1
Denominator unit
Animal
Manufacturer
Name
MSK
Active ingredients
1. Name
  Gabapentin
  Dose
  Numerator
  1
  Numerator unit
  Unknown
  Denominator
  1
  Denominator unit
  Unknown
First exposure date
20260518
Administered by
Animal Owner
Route
Oral
Lot number
not given
Brand name
MSK
Dosage form
Unassigned
Frequency of administration
Value
12
Unit
Hour
Manufacturer
Name
MSK
Active ingredients
1. Name
  Amantadine
  Dose
  Numerator
  1
  Numerator unit
  Unknown
  Denominator
  1
  Denominator unit
  Unknown

Health assessment prior to exposure

Condition: Unknown
Assessed by: Veterinarian

Animal

Species

Cat

Gender

Male

Reproductive status

Neutered

Female animal physiological status

NOT APPLICABLE

Age

Min: 4.25
Unit: Year
Qualifier: Measured

Weight

Min: 5.760
Unit: Kilogram
Qualifier: Measured

Breed

Is crossbred: false
Breed component: Domestic Shorthair

Outcome

Medical status
Ongoing
Number of animals affected
1

How to read this: Each report says someone told FDA an event happened while a product was used. A report does not show the product caused it, and counts rise and fall with how many people report. Data from openFDA, FDA's public API. FDA says not to rely on it to make decisions about medical care and to treat every result as unvalidated; confirm against FDA's own record and the product labeling. Not medical or legal advice.