Resflor Gold (Florfenicol + Flunixin meglumine) Dose for Cattle: Strengths & Dose Calculator
Resflor Gold combines florfenicol 300 mg/mL with flunixin 16.5 mg/mL (Merck Animal Health) for bovine respiratory disease and its fever in beef and non-lactating dairy cattle [1]. It is a single SC dose of 6 mL per 100 lb — 40 mg/kg florfenicol and 2.2 mg/kg flunixin [1].
- Contains
- Florfenicol + Flunixin meglumine
- Forms
- Resflor Gold injection
- Label species
- Cattle
- Data from
- USA (FDA label)
- Type
- NSAID + antibiotic
Resflor Gold dose calculator
Results are calculated in your browser from the doses and strengths on this page. Check the strength printed on your pack and the label in your country before giving any dose.
Resflor Gold strengths and presentations
Resflor Gold dose by species
| Species | Use | Dose | Route | How often | Basis |
|---|---|---|---|---|---|
| Cattle | Bovine respiratory disease with fever Gives 2.2 mg/kg flunixin at the same time. Not more than 10 mL per injection site. | 40 mg/kg[1] | SC | Once | Label |
Label directions
Warnings and precautions
Withdrawal periods
| Species | Product | Withdrawal | Detail |
|---|---|---|---|
| Cattle | Meat | 38 days | Not slaughtered within 38 days of treatment.[1] |
About florfenicol (the active ingredient)
Antibiotic (phenicol).
Key safety points
- Not approved in dairy cattle 20 months of age or older [2].
About flunixin meglumine (the active ingredient)
Non-steroidal anti-inflammatory drug (NSAID, nicotinic acid derivative — non-selective).
How it works
NSAIDs reduce prostaglandin production by inhibiting the cyclooxygenase (COX) enzymes [4]. Flunixin is a non-selective COX inhibitor [4].
Key safety points
- Banamine injection is approved only for IV use in cattle — IM injection has left violative residues in meat [5].
- Not for use in dry dairy cows, veal calves, breeding bulls or horses intended for food (Banamine label) [5].
- Pour-on: do not use in animals with liver, kidney or heart disease, gut ulceration or platelet disorders [6].
All about flunixin meglumine — doses by species and every brand →
Pack sizes
- 100, 250 and 500 mL multi-dose vials [1].
Frequently asked questions
What is the Resflor Gold dose?
One SC injection of 6 mL per 100 lb — 40 mg/kg florfenicol and 2.2 mg/kg flunixin [1].
What is the meat withdrawal for Resflor Gold?
38 days [1].
Other brands of florfenicol + flunixin meglumine
More from MSD Animal Health (Merck Animal Health in the US)
Resflor Gold is a trademark of its owner. This page is an independent clinical reference and is not affiliated with MSD Animal Health (Merck Animal Health in the US). Strengths, species and withdrawal periods can differ between countries — always follow the pack insert in your country.
References
- RESFLOR GOLD — label
Passage read from this source
Each milliliter of sterile RESFLOR GOLD® contains 300 mg florfenicol, 16.5 mg flunixin as flunixin meglumine,
40 mg florfenicol/kg body weight and 2.2 mg flunixin/kg body weight (6 mL/100 lb)
should be administered once by subcutaneous injection
Do not administer more than 10 mL at each site.
- Dosages of Chloramphenicol and Florfenicol
Passage read from this source
20 mg/kg, IM, repeated in 48 h; 40 mg/kg, SC, once
Not approved in dairy cattle > 20 months of age
- ZELERIS — Canadian label
Passage read from this source
Active ingredients: 400 mg of florfenicol and 5 mg of meloxicam;
- Nonsteroidal Anti-inflammatory Drugs in Animals
Passage read from this source
In the US, the nicotinic acid derivative flunixin (as the meglumine salt) is approved for use in horses
Flunixin is a nonselective COX inhibitor.
A topical formulation also has been approved for use in cattle.
NSAIDs act primarily to reduce the biosynthesis of prostaglandins by inhibiting cyclooxygenase (COX).
- BANAMINE (flunixin meglumine injection) — label
Passage read from this source
The recommended dose for musculoskeletal disorders is 0.5 mg per pound (1 mL/100 lbs) of body weight once daily.
Treatment may be given by intravenous or intramuscular injection and repeated for up to 5 days.
1.1 to 2.2 mg/kg (0.5 to 1 mg/lb; 1 to 2 mL per 100 lbs) of body weight given by slow intravenous administration
either once a day as a single dose or divided into two doses administered at 12-hour intervals for up to 3 days.
- BANAMINE Transdermal (flunixin pour-on) — Canadian label
Passage read from this source
Apply a single total dose of 3.3 mg flunixin per kg bodyweight (equivalent to 1 mL/15 kg bodyweight) topically
Treated cattle must not be slaughtered for use in food for at least 13 days after the latest treatment with this drug.
Do not use in animals with hepatic disease, renal and cardiovascular impairment,
- MEGLUDYNE Injection — product page
Passage read from this source
1.1 mg to 2.2 mg FLUNIXIN per kg body weight or 1 ml to 2 ml of MEGLUDYNE per 45 kg body weight,
1 mg FLUNIXIN per kg body weight given by slow I/V or I/M injection route.
1 mg to 2 mg FLUNIXIN per kg body weight given by S/C or slow I/V.
For veterinary professionals. Information supports — never replaces — clinical judgement; always check the current product label and local regulations.