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Baytril 100 Inj (500 ml)

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Description

Baytril 100 for Cattle is a sterile, ready-to-use injectable antimicrobial solution for treating bovine respiratory disease (BRD), that contains enrofloxacin, a broad-spectrum fluoroquinolone antimicrobial agent.

Key Benefits:

  • Fast acting antibiotic reaches therapeutic levels in lungs at the site of infection in 1 to 2 hours.
  • Injects easily even in cold weather when other products thicken.
  • Produces no significant injection site reactions.
  • Baytril is bactericidal meaning it kills major BRD causing bacteria. It can be given as a single dose or a multiple day therapy, making it more versatile to your operation.

Spceies/Premise

Non-lactating Dairy Cattle

Concern

Bovine Respiratory Disease

Indications:

  • First. Baytril 100 for Cattle is the first single-dose fluoroquinolone FDA-approved for the treatment of bovine respiratory disease (BRD) and the control of BRD in beef and non-lactating dairy cattle at high risk of developing BRD.
  • Four major BRD pathogens. Baytril 100 has bactericidal activity against the major bovine pathogens Mannheimia haemolytica, Pasteurella multocida, Histophilus somni and Mycoplasma bovis.
  • Bactericidal. Baytril 100 has a mode of action that actually kills the bacteria causing infection by destroying bacterial DNA and preventing bacterial replication.
  • Concentration-dependent. Baytril 100 is concentration-dependent, delivering effective therapeutic drug concentrations with a single dose.
  • Effective. In cattle, Baytril 100 reaches therapeutic drug concentrations at the site of infection in the lung in 1-2 hours.1
  • Kills the bacteria. In vitro,* Baytril 100 kills 97% of BRD-causing bacteria in 1-2 hours.*2 And the sooner bacteria are killed, the faster a calf will feel better and get back to work eating.
  • Easy syringability. Baytril 100 is syringable in cold weather3, making it an easily stored injectable solution (do not refrigerate; and protect from freezing and exposure to direct sunlight).
  • Beef & Dairy. Baytril 100 is approved for use in non-lactating dairy cattle, including dairy replacement heifers < 20 months of age.
  • Subcutaneous. Single-dose Baytril 100 is administered by a subcutaneous injection in compliance with BQA guidelines.

Cattle - Single-Dose Therapy: Baytril 100 is indicated for treatment of bovine respiratory disease (BRD) associatd with Mannheimia haemolytica, Pasteurella multocida, Histophilus somni and Mycoplasma bovis in beef and non-lactating daily cattle; and for the control of BRD in beef and non-lactating dairy cattle at high risk of developing BRD associated with M. haemolytica, P. multocida, H. somni and M. bovix.

Cattle - Multipe-Day Therapy: Baytril 100 is indicated for the treatment of bovine respiratory disease (BRD) associated with Mannheimia haemolytica, Pasteurella multocida, and Histophilus somni in beef and non-lactating daiy cattle.

Swine: Baytril 100 is indicated for the treatment and control of swine respiratory disease (SRF) associated with Actinobacillus Mycoplasma hyopneumoniae. Baytril 100 is indicated for the control of colibacillosis in groups or pens of weaned pigs where colibacillosis associated with Escherichia coli has been diagnosed.

Directions

View Baytril 100 Drug Facts Sheet.

Baytril 100 provides flexible dosages and durations of therapy.

Baytril 100 may be administered as a single dose for one day for treatment and control of BRD (cattle), for treatment and control of SRD or for control of colibacillosis (swine), or for multiple days for BRD treatment (cattle). Selection of the appropriate dose and duration of therapy for BRD treatment in cattle should be based on an assessment of the severity of the disease, pathogen susceptibility and clinical response.

Cattle:

Single-Dose Therapy (BRD Treatment): Administer, by subcutaneous injection, a single dose of 7.5-12.5 mg/kg of body weight (3.4-5.7 mL/100 lb).

Multiple-Day Therapy (BRD Treatment): Administer daily, subcutaneous dose of 2.5-5 mg/kg of body weight (1.1-2.3 mL/100 lb).

Treatment should be repeated at 24-hour intervals for three days. Additional treatments may be given on Days 4 and 5 to animals that have shown clinical improvement but not total recovery.

Single-Dose Therapy (BRD control): Administer, by subcutaneous injection, a single dose of 7.5 mg/kg of body weight (3.4 mL/100 lb).

Examples of conditions that may contribute to calves being at high risk of developing BRD include, but are not limited to, the following.

  • Transportation with animals from two or more farm origins.
  • An extended transport time with few to no rest stops.
  • An environmental temperature change of ≥30°F during transportation.
  • A ≥30°F range in temperature fluctuation within a 24-hour period.
  • Exposure to wet or cold weather conditions.
  • Excessive shrink (more than would be expected with a normal load of cattle).
  • Stressful arrival processing procedures (e.g., castration or dehorning).
  • Exposure within the prior 72 hours to animals showing clinical signs of BRD.

Administered dose volume should not exceed 20 mL per injection site.

Table 1 – Baytril® 100 Dose and Treatment Schedule for Cattle*
Treatment Control
Weight (lb Single-Dose Therapy 7.5-12.5 mg/kg Dose Volume (mL) Multiple-Day Therapy 2.5-5.0 mg/kg Dose Volume (mL) Single-Dose Therapy 7.5 mg/kg Dose Volume (mL)
100 3.5-5.5 1.5-2.0 3.5
200 7.0-11.0 2.5-4.5 7.0
300 10.5-17.0 3.5-6.5 10.5
400 14.0-22.5 4.5-9.0 14.0
500 17.0-28.5 5.5-11.5 17.0
600 20.5-34.0 7.0-13.5 20.5
700 24.0-39.5 8.0-16.0 24.0
800 27.5-45.5 9.0-18.0 27.5
900 31.0-51.0 10.0-20.5 31.0
1000 34.0-57.0 11.0-23.0 34.0
1100 37.5-62.5 12.5-25.0 37.5

*Dose volumes have been rounded to the nearest 0.5 mL within the dose range.

Swine:

Administer, either by intramuscular or subcutaneous (behind the ear) injection, a single dose of 7.5 mg/kg of body weight (3.4 mL/100 lb). Administered dose volume should not exceed 5 mL per injection site.

For the control of colibacillosis, administration should be initiated within the first 60 days post-weaning when clinical signs are present in at least 2% of the animals in the group. If no improvement is noted within 48 hours, the diagnosis should be reevaluated.

Table 2 – Baytril® 100 Dose and Treatment Schedule for Swine
Weight(lb) Dose Volume (mL)
15 0.5
30 1.0
50 1.7
100 3.4
150 5.1
200 6.8
250 8.5

Dilution of Baytril 100: Baytril 100 may be diluted with sterile water prior to injection. The diluted product should be used within 24 hours. Store diluted solution in amber glass bottles between 4-40°C (36-104°F).

Table 3 – Dilution Schedule*
Swine Weight mL of Baytril 100 mL of sterile water Number of doses
10 lb 34 mL 66 mL 100
15 lb 51 mL 49 mL 100
20 lb 68 mL 32 mL 100
25 lb 85 mL 15 mL 100

*For 1 mL dose volume from diluted solution

Use within 30 days of first puncture and puncture a maximum of 30 times with a needle or 4 times with a dosage delivery device. Any product remaining beyond these parameters should be discarded.

Residue Warnings:

Cattle: Animals intended for human consumption must not be slaughtered within 28 days from the last treatment. This product is not approved for female dairy cattle 20 months of age or older, including dry dairy cows. Use in these cattle may cause drug residues in milk and/or in calves born to these cows. A withdrawal period has not been established for this product in pre-ruminating calves. DO not use in calves to be processed for veal.

Swine: Animals intended for human consumption must not be slaughtered within 5 days of receiving a single-injection dose.

Caution:

Federal (U.S.A.) law restricts this drug to use by or on the order of a licensed veterinarian.

Federal (U.S.A) law prohibits the extra-label use of this drug in food-producing animals.

To assure responsible antimicrobial drug use, enrofloxacin should only be used as a second-line drug for colibacillosis in swine following consideration of other therapeutic options.

Human Warnings:

Not for use in humans. Keep out of reach of children. Avoid contact with eyes. In case of contact, immediately flush eyes with copious amounts of water for 15 minutes. In case of dermal contact, wash skin with soap and water. Consult a physician if irritation persists following ocular or dermal exposures. Individuals with a history of hypersensitivity to quinolones should avoid this product. In humans, there is a risk of user photosensitization within a few hours after excessive exposure to quinolones. If excessive accidental exposure occurs, avoid direct sunlight. For customer service or to obtain product information, including a Safety Data Sheet, call 1-800-633-3796. For medical emergencies or to report adverse reactions, Call 1-800-422-9874.

Precautions:

The effects of enrofloxacin on cattle or swine reproductive performance, pregnancy and lactation have not been adequately determined. The long-term effects on articular joint cartilage have not been determined in pigs above market weight.

Subcutaneous injection in cattle and swine, or intramuscular injection in swine, can cause a transient local tissue reaction that may result in trim loss of edible tissue at slaughter.

Baytril 100 contains different excipients than other Baytril products. The safety and efficacy of this formulation in species other than cattle and swine have not been determined.

Quinolone class drugs should be used with caution in animals with known or suspected Central Nervous System (CNS) disorders. In such animals, quinolones have, in rare instances, been associated with CNS stimulation which may lead to convulsive seizures. Quinolone class drugs have been shown to produce erosions of cartilage of weight-bearing joints and other signs of arthropathy in immature animals of various species. See Animal Safety section for additional information.

Adverse Reactions:

No adverse reaction were observed during clinical trials.

For additional information about adverse drug experience reporting for animal drugs, contact FDA at 1-888-FDA-VETS or online at http://www.fda.gov/AnimalVeterinary/SafetyHealth.

Microbiology:

Enrofloxacin is bactericidal and exerts its antibacterial effect by inhibiting bacterial DNA gyrase ( a type II topoisomerase) thereby preventing DNA supercoiling and replication which leads to cell death.1 Enrofloxacin is active against Gram-negative and Gram-positive bacteria.

Effectiveness:

Cattle: A total of 845 calves with naturally occurring BRD were treated with Baytril 100 in eight field trials located in five cattle feeding states. Response to treatment was compared to non-treated controls. Single-dose and multiple-day therapy regimens were evaluated. BRD and mortality were significantly reduce in enrofloxacin-treated calves. No adverse reactions were reported in treated animals.

The effectiveness of Baytril 100 for the control of respiratory disease in cattle at high risk of developing BRD was evaluated in a six-location study in the U.S. and Canada. A total of 1,150 crossbred beef calves at high risk of developing BRD were enrolled in the study. Baytril 100 (7.5 mg/kg BW) or an equivalent volume of sterile saline was administered as a single subcutaneous injection within two days after arrival. Cattle were observed daily for clinical signs of BRD and were evaluated for success on Day 14 post-treatment. Treatment success in the Baytril 100group (497/573, 87,83%) was significantly higher (P=0.0013) than success in the saline control group (455/571, 80.92%). In addition, there were more treatment successes (n=13) than failures (n=3) in the group of animals positive for M. bovis on Day 0 that were treated with Baytril 100. No product related adverse reactions were reported.

Swine: A total of 590 were treated with Baytril 100 or saline in two separate natural infection SRD field trials. For the treatment of SRD, the success rate of enrofloxacin treated pigs that were defined as "sick and febrile" (increased respiratory rate, labored or dyspneic breathing, depressed attitude and a rectal temperature ≥104°F) was statistically significantly greater than the success rate of saline treated "sick and febrile" pigs. For the control of SRD, mean rectal temperature, mortality (one trial) and morbidity were statistically significantly lower for enrofloxacin treated pigs in pens containing a percentage of "sick and febrile" pigs compared to saline treated pigs.

The effectiveness of Baytril 100 administered as a single SC dose of 7.5 mg/kg BW for the treatment and control of SRD associated with M. hyopneumoniae was demonstrated using an induced infection model study and three single site natural infection field studies. In the model study, 72 healthy pigs were challenge with a representative M. hyopneumoniae isolate and treated with Baytril 100 or saline. A statistically significant (P <0.0001) decrease in the mean total lung lesion score was observed in the Baytril 100 treated group (4%) compared with the saline treated group (27%) at 10 days post treatment. In two field studies evaluating effectiveness for treatment of SRD, a total of 300 pigs with clinical signs of SRD (moderate depression, moderately increased respiratory rate, and a rectal temperature of ≥ 104°F) were enrolled and treated with Baytril 100 or saline. At 7 days post-treatment, the cure rate was statistically significantly higher at each site (P < 0.0001) in the Baytril 100-treated groups (61.3% and 92%) compared with the saline-treated groups (26.7% and 33.3%). In one field study evaluating effectiveness for control of SRD, a group of 400 pigs in which > 15% had clinical signs of SRD (moderate depression score, moderately increased respiratory rate, and a rectal temperature of ≥ 104°F) was enrolled and treated with Baytril 100 or saline. At 7 days post-treatment, the cure rate was statistically significantly higher (P < 0.0002) in the Baytril 100-treated group (70.0%) compared with the saline-treated group (48.5%). In addition to M. hyopneumoniae, B. bronchiseptica was also isolated in sufficient numbers from these field studies to be included in the SRD treatment and control indications.

The effectiveness of Baytril 100 for the control of colibacillosis associated with E. coli was evaluated in a multi-site natural infection field study. At each site, when at least 5% of the pigs were defined as "clinically affected" (presence of diarrhea and either depression or gauntness), all pigs were administered Baytril 100 as a single IM dose of 7.5 mg/kg BW or an equivalent dose volume of saline. At 7 days post treatment, the success rate was statistically significantly higher (P=0.0350) in the Baytril 100 treated group (61.5%) compared with the saline treated group (44.7%).

Toxicology:

The oral LD50 for laboratory rats was greater than 5000 mg/kg of body weight. Ninety-day feeding studies in dogs and rats revealed no observable adverse effects at treatments rates of 3 and 40 mg/kg respectively. Chronic studies in rats and mice revealed no observale adverse effects at 5.3 and 323 mg/kg respectively. There was no evidence of carcinogenic effect in laboratory animal models. A two generation rat reproduction study revealed no effect with 10 mg/kg treatments. No teratogenic effects were observed in rabbits at doses of 25 mg/kg or in rats at 50 mg/kg.

Animal Safety:

Cattle: Safety studies were conducted in feeder calves using single doses of 5, 15, and 25 mg/kg for 15 consecutive days and 50 mg/kg for 5 consecutive days. No clinical signs of toxicity were observed when a dose of 5 mg/kg was administered for 15 days. Clinical Signs of depression, in-coordination and muscle fasciculation were observed in calves when doses of 15 or 25 mg/kg were administered for 10 to 15 days. Clinical signs of depression, inappetance and in-coordination were observed when a dose of 50 mg/kg was administered for 3 days. No drug related abnormalities in clinical pathology parameters were identified. No articular cartilage lesions were observed after examination of stifle joints from animals administered 25 mg/kg for 15 days.

A safety study was conducted in 23 day old calves using doses of 5, 15, 25 mg/kg for 15 consecutive days. No clinical signs of toxicity or changes in clinical pathology parameters were observed. No articular cartilage lesions were observed in the stifle joints at any dose level at 2 days and 9 days following 15 days of drug administration.

An injection site study conducted in feeder calves demonstrated that the formulation may induce a transient reaction in the subcutaneous tissue and underlying muscle. No painful responses to administration were observed.

Swine: Subcutaneous Safety: A safety study was conducted in 32 pigs weighing approximately 57 kg (125 lb) using single doses of 5, 15 or 25 mg/kg daily for 15 consecutive days. Incidental lameness of short duration was observed in all groups, including the saline-treated controls. Musculoskeletal stiffness was observed following the 15 and 25 mg/kg treatments with clinical signs appearing during the second week of treatment. Clinical signs of lameness improved after treatment ceased and most animals were clinically normal at necropsy.

A second was conducted in two pigs weighing approximately 23 kg (50 lb), treated with 50 mg/kg for 5 consecutive days. There were no clinical signs of toxicity or pathological changes.

An injection site study conducted in pigs demonstrated that the formulation may induce a transient reaction in the subcutaneous tissue. No painful responses to administration were observed.

Intramuscular Safety: A safety study was conducted in 48 weaned, 20 to 22 day old pigs. Pigs were administered Baytril 100 at 7.5, 22.5 and 37.5 mg/kg BW by IM injection into the neck once weekly for 3 consecutive weeks. All pigs remained clinically normal throughout the study. Transient decreases in feed and water consumption were observed after each treatment. Mild, transient, post treatment injection site swellings were observed in pigs receiving the 37.5 mg/kg BW dose. Injection site inflammation was found on post mortem examination in all enrofloxacin treated groups.

Storage:

Protect from direct sunlight. Do not refrigerate or freeze. Store at 20-30°C (68-86°F), excursions permitted up to 40°C (104°F). Precipitation may occur due to cold temperature. To redissolve, warm and then shake the vial.

FAQ

Baytril 100 (enrofloxacin) Injectable for Cattle is indicated for the treatment of bovine respiratory disease (BRD) associated with Mannheimia haemolytica, Pasteurella multocida, Histophilus somni and Mycoplasma bovis in beef and non-lactating dairy cattle; and for the control of BRD in beef and non-lactating dairy cattle at high risk of developing BRD associated with M. haemolytica, P. multocida, H. somni and M. bovis.

Administer, by subcutaneous injection, a single dose of 7.5-12.5 mg/kg of body weight (3.4-5.7 mL/100 lb).

Baytril 100 (enrofloxacin) Injectable for Cattle is indicated for the treatment of bovine respiratory disease (BRD) associated with Mannheimia haemolytica, Pasteurella multocida and Histophilus somni in beef and non-lactating dairy cattle.

Administer daily, a subcutaneous dose of 2.5-5 mg/kg of body weight (1.1-2.3 mL/100 lb). Treatment should be repeated at 24-hour intervals for three days. Additional treatments may be given on Days 4 and 5 to animals that have shown clinical improvement but not total recovery.

Some examples of conditions that may contribute to calves being at high risk of developing BRD include, but are not limited to, the following:

  • ransportation with animals from two or more farm origins.
  • An extended transport time with few to no rest stops.
  • An environmental temperature change of ≥30°F during transportation.
  • A ≥30°F range in temperature fluctuation within a 24-hour period.
  • Exposure to wet or cold weather conditions.
  • Excessive shrink (more than would be expected with a normal load of cattle).
  • Stressful arrival processing procedures (e.g., castration or dehorning).
  • Exposure within the prior 72 hours to animals showing clinical signs of BRD.
Protect from direct sunlight. Do not refrigerate or freeze. Store at 20-30°C (68-86°F), excursions permitted up to 40°C (104°F). Precipitation may occur due to cold temperature. To redissolve, warm and then shake the vial.
Yes. Baytril 100 (enrofloxacin) Injectable for Cattle may be administered as a single dose for one day or for multiple days. Selection of the appropriate dose and duration of therapy for BRD treatment in cattle should be based on an assessment of the severity of the disease, pathogen susceptibility and clinical response.
Table 1 – Baytril® 100 Dose and Treatment Schedule for Cattle*
Treatment Control
Weight (lb Single-Dose Therapy 7.5-12.5 mg/kg Dose Volume (mL) Multiple-Day Therapy 2.5-5.0 mg/kg Dose Volume (mL) Single-Dose Therapy 7.5 mg/kg Dose Volume (mL)
100 3.5-5.5 1.5-2.0 3.5
200 7.0-11.0 2.5-4.5 7.0
300 10.5-17.0 3.5-6.5 10.5
400 14.0-22.5 4.5-9.0 14.0
500 17.0-28.5 5.5-11.5 17.0
600 20.5-34.0 7.0-13.5 20.5
700 24.0-39.5 8.0-16.0 24.0
800 27.5-45.5 9.0-18.0 27.5
900 31.0-51.0 10.0-20.5 31.0
1000 34.0-57.0 11.0-23.0 34.0
1100 37.5-62.5 12.5-25.0 37.5

*Dose volumes have been rounded to the nearest 0.5 mL within the dose range.

Transitory swelling and inflammation at the injection site has been reported in post marketing reports.
In case of overdose contact your nearest pet hospital

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