Drug profile

The FDA adverse-event record for Florfenicol Premix Pwd Aquacul

19 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Florfenicol Premix Pwd Aquacul. See the species affected, top reactions, and outcomes below.

19
adverse-event reports
63.2%
death-coded share
Fish
most-reported species
6
Increased mortality rate - top reaction
Verify with FDA CVM →
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
19
Total Reports
12
Deaths Reported
63.2%
Death Rate

Active Ingredients

Florfenicol Premix Pwd Aquacul

Administration Routes

OralOtherUnknown

Species Affected

Fish 19

Most Affected Breeds

Trout - Golden/Rainbow/Redband/Steelhead 10
Fish (other) 3
Catfish (Siluriformes) 2
Trout (unspecified) 2
Pacific Salmon, Chinook (Oncorhynchus tshawytscha) 1
Catfish - Channel (Ictalurus punctatus) 1

Most Reported Reactions

Increased mortality rate 6
Lack of efficacy - NOS 6
Death 5
Sunburn 4
Lack of efficacy (bacteria) - NOS 2
Skin lesion NOS 2
Generalised red spot 1
Enlarged kidney(s) 1
NT - Abnormal necropsy finding NOS 1
Digestive tract disorder NOS 1
Death by euthanasia 1
Other abnormal test result NOS 1

Outcome Breakdown

Died
11 (50.0%)
Outcome Unknown
6 (27.3%)
Recovered/Normal
3 (13.6%)
Ongoing
1 (4.5%)
Euthanized
1 (4.5%)

Florfenicol Premix Pwd Aquacul Adverse Event Insights

19 reports name Florfenicol Premix Pwd Aquacul; 12 recorded a death outcome (63.2% of reported events, not a population-level mortality rate). Active ingredient: Florfenicol Premix Pwd Aquacul. Administration routes: Oral, Other, Unknown.

By species: Fish (19 reports). By breed: Trout - Golden/Rainbow/Redband/Steelhead (10), Fish (other) (3), Catfish (Siluriformes) (2).

Leading clinical signs: Increased mortality rate (6), Lack of efficacy - NOS (6), Death (5), Sunburn (4). Outcome, 22 coded reports: Died leads at 50.0%.

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.