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Clinical particulars
Target species
Pigs (fattening pigs) and chickens (broilers).
Indications for use
Fattening pigs: Treatment and metaphylaxis of:
- Post-weaning diarrhoea caused by beta-haemolytic K88-positive, K99-positive or 987P Escherichia coli strains susceptible to trimethoprim-sulfamethoxazole.
- Secondary bacterial infections caused by Pasteurella multocida, Actinobacillus pleuropneumoniae, Streptococcus spp. and Haemophilus parasuis susceptible to trimethoprim-sulfamethoxazole.
Broilers: Treatment and metaphylaxis of:
- Colibacillosis caused by Escherichia coli susceptible to trimethoprim-sulfamethoxazole.
- Coryza caused by Avibacterium paragallinarum susceptible to trimethoprim-sulfamethoxazole.
The presence of the disease in the group/flock must be established before the product is used.
Contraindications
Do not use in animals suffering from severe liver or kidney disease, oliguria or anuria.
Do not use in animals with impaired haematopoietic systems.
Do not use in case of known hypersensitivity to sulphonamides or trimethoprim or any of the excipients.
Special warnings for each target species
Severely diseased animals can have a decreased appetite and water consumption. If necessary the concentration of the VMP in the drinking water should be adjusted to make sure that the recommended dosage is being consumed. However, if the concentration of the product is increased too much, the intake of the medicated drinking water decreases for palatability reasons. Therefore water intake should be monitored regularly, especially in broilers.
In case of insufficient intake of water, pigs should be treated parenterally.
Special precautions for use in animals
Due to the likely variability (time, geographical) in susceptibility of bacteria for potentiated sulphonamides, occurrence of resistance of bacteria may differ from country to country and even from farm to farm, and therefore bacteriological sampling and susceptibility testing are recommended. Use of the product should be based on culture and sensitivity of micro-organisms from diseased cases on farm or from recent previous experience on the farm. Use of the product deviating from the instructions given in this datasheet may increase the prevalence of bacteria resistant to sulfamethoxazole and trimethoprim and may also decrease the effectiveness of combinations of trimethoprim with other sulphonamides due to the potential for cross resistance. Official and local antimicrobial policies should be taken into account when the product is used.
Special precautions to be taken by the person administering the veterinary medicinal product to animals
Sulphonamides may cause hypersensitivity (allergy) following injection, inhalation, ingestion or skin contact. Hypersensitivity to sulphonamides may lead to cross reactions with other antibiotics. Allergic reactions to these substances may occasionally be serious.
Do not handle this product if you know you are sensitive to sulphonamides. If you develop symptoms following exposure, such as a skin rash, you should seek medical advice and show the physician this warning.
The excipient N-methylpyrrolidone (NMP) may damage unborn children; therefore, women of child bearing age must be very careful to avoid exposure via spillage onto the skin when administering the product. If you are pregnant, think you may be pregnant or are attempting to conceive, you should not administer the product.
This product may cause skin- and respiratory irritation as well as eye damage.
Impermeable gloves, e.g. rubber or latex and protective glasses, should be worn when handling the product including when mixing the product with drinking water. Avoid inhalation. In the event of eye contact, rinse the eye with large amounts of clean water and, if irritation occurs, seek medical attention. In the event of accidental ingestion, seek medical advice. Wash hands and contaminated skin immediately after handling the product.
Adverse reactions
A diminished water intake in chickens may occur rarely.
Hypersensitivity reactions can occur rarely.
The frequency of adverse reactions is defined using the following convention:
- very common (more than 1 in 10 animals treated displaying adverse reaction(s))
- common (more than 1 but less than 10 animals in 100 animals treated)
- uncommon (more than 1 but less than 10 animals in 1,000 animals treated)
- rare (more than 1 but less than 10 animals in 10,000 animals treated)
- very rare (less than 1 animal in 10,000 animals treated, including isolated reports).
Use during pregnancy and lactation
The safety of the veterinary medicinal product has not been established during pregnancy, lactation or lay.
Interactions
Do not combine with other veterinary medicinal products.
Amounts to be administered and administration route
Route of administration: for use in drinking water.
The product can be added directly to the drinking water to prepare a therapeutic solution at the calculated concentration, but can also be used in a concentrated stock solution by adding 200 ml of the veterinary medicinal product per litre of water and diluting this further.
Fattening pigs: 5 mg trimethoprim and 25 mg sulfamethoxazole per kg body weight a day, for 4-7 days. This corresponds to 1 ml of the veterinary medicinal product per 4.0 kg body weight per day. Based on the recommended dose, daily water consumption, and the number and weight of the pigs to be treated, the exact daily amount of the veterinary medicinal product required can be calculated according to the following formula:
Mean body weight (kg) of pigs to be treated
___________________________________
=
___ ml veterinary medicinal product per litre drinking water
Mean daily water consumption (litre) per pig x 4.0
Broilers: 7.5 mg trimethoprim and 37.5 mg sulfamethoxazole per kg body weight a day, for 3 days. This corresponds to 1 ml of the veterinary medicinal product per 2.67 kg body weight per day. Based on the recommended dose, daily water consumption, and the number and weight of the birds to be treated, the exact daily amount of the veterinary medicinal product required can be calculated according to the following formula:
Mean body weight (kg) of birds to be treated
____________________________________
=
___ ml veterinary medicinal product per litre drinking water
Mean daily water consumption (litre) per bird x 2.67
The body weight and water consumption should be determined as accurately as possible, to ensure a correct dosage.
The daily amount is to be added to the drinking water such that all medication will be consumed in 24 hours. Medicated drinking water and stock solutions should be freshly prepared every 24 hours. During the treatment period animals should not have access to water sources other than the medicated water. However, it should be ensured that animals always have sufficient water available. After the end of the medication period, the water supply system should be cleaned appropriately to avoid intake of sub-therapeutic amounts of active substance. The intake of medicated water depends on the clinical condition of the animals. In order to obtain the correct dosage the concentration of the veterinary medicinal products has to be adjusted accordingly.
Overdose
In chickens an acute overdose will likely not occur because the birds will be reluctant to drink the strongly concentrated drinking water (too bitter taste if above 2 litres of the veterinary medicinal product per 1000 litres drinking water). Chronic overdose in chickens will result in a strongly diminished water and feed intake and retarded growth.
Withdrawal periods
Pig: Meat and offal: 8 days.
Chicken: Meat and offal: 5 days.
Not for use in birds producing or intending to produce eggs for human consumption.