Do not use in: Heat stroke, GI ulceration; 1.1 mg/kg on three days per week. Calendar regimen is not a continuous daily prescription; prolonged use carries substantial GI risk.
Cat
Use / stage
Dose
Route
Schedule
Instructions
Acute pain
1.1 mg/kg
IV, IM, SC
Once
Do not use in: Heat stroke, GI ulceration
Ocular surgery adjunct
0.5 mg/kg
IV
Once
Do not use in: Heat stroke, GI ulceration
Historical intermittent oral treatment
Reference only
PO
Do not use in: Heat stroke, GI ulceration; 1.1 mg/kg on three days per week. Calendar regimen is not a continuous daily prescription; prolonged use carries substantial GI risk.
Horse
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
1.1 mg/kg
IV, IM
Every 24 h
Up to 5 days; Do not use in: Heat stroke, GI ulceration; IV avoids IM injection-site complications.
Pain and inflammation
1.1 mg/kg
PO
Every 24 h
Up to 5 days; Do not use in: Heat stroke, GI ulceration; Paste or granules.
Low-dose colic or sepsis adjunct
0.25 mg/kg
IV
Every 8 h
Do not use in: Heat stroke, GI ulceration; Not a direct endotoxin-neutralizing treatment; this specific low-dose schedule differs from standard once-daily analgesic dosing.
Cattle
Use / stage
Dose
Route
Schedule
Instructions
Fever and inflammation
1.1–2.2 mg/kg
IV
Every 24 h
Up to 3 days; Do not use in: Heat stroke, GI ulceration; Slow injection. If divided every 12 hours, preserve the same total daily amount, rather than repeating the full daily amount twice.
Topical pain and fever treatment
3.33 mg/kg
TOPICAL
Once
Do not use in: Heat stroke, GI ulceration; Use the dedicated transdermal product along dorsal midline.
Florfenicol combination
Reference only
SC
Do not use in: Heat stroke, GI ulceration; Florfenicol 40 mg/kg plus flunixin 2.2 mg/kg using Resflor Gold. Combination-product regimen; not interchangeable with flunixin-only injections.
Pig
Use / stage
Dose
Route
Schedule
Instructions
Pyrexia
2.2 mg/kg
IM
Once
Do not use in: Heat stroke, GI ulceration
Ferret
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
0.5–2 mg/kg
PO, IM
Every 24 h
Rabbit
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
1.1 mg/kg
SC, IM, IV
Every 12–24 h
Chinchilla
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
1–3 mg/kg
SC
Every 12 h
Guinea Pig
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
2.5–5 mg/kg
SC
Every 12 h
Gerbil
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
2.5 mg/kg
SC
Every 12–24 h
Mouse
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
2.5 mg/kg
SC
Every 12–24 h
Rat
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
2.5 mg/kg
SC
Every 12–24 h
Hamster
Use / stage
Dose
Route
Schedule
Instructions
Pain and inflammation
2.5 mg/kg
SC
Every 12–24 h
Sheep
Use / stage
Dose
Route
Schedule
Instructions
Analgesia
1–2 mg/kg
IV
Every 24 h
Analgesia
1–4 mg/kg
PO
Every 24 h
Oral paste alternative.
Goat
Use / stage
Dose
Route
Schedule
Instructions
Analgesia
1–2 mg/kg
IV
Every 24 h
Analgesia
1–4 mg/kg
PO
Every 24 h
Oral paste alternative.
Bird
Use / stage
Dose
Route
Schedule
Instructions
Inflammatory pain
1–10 mg/kg
IM
Every 24 h
Repeated doses have caused renal disease and death in psittacines. Use the lowest effective dose for the shortest course with hydration and renal monitoring.
Monitor GI signs, hydration, renal function and serum albumin in horses. IM/SC use in cattle alters residue persistence compared with IV use.
Small-animal use is limited by ulcer risk; alternatives with better established safety are often preferable.
Dose is expressed as flunixin, not the mass of meglumine salt.
The source contains a veal-calf 2.2 mg/kg IV entry but also explicitly prohibits use in calves processed for veal; this contradictory population instruction is not a calculator regimen.
