POM-V Prescription Required

Citramox 500 mg/g Powder for Use in Drinking Water for Chickens, Turkeys, Ducks and Pigs

Active ingredient: Amoxicillin Trihydrate

Form

Powder

Species

Chickens Duck Pigs Turkeys

Manufacturer

Laboratorios Karizoo S.A

VMD MA No.

31223/4004

What it's used for

Treatment of infections in chickens, turkeys and ducks caused by bacteria susceptible to amoxicillin. Pigs: For the treatment of pasteurellosis.

Full indications, dosage and side effects ↓

View official SPC (PDF)

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Paying less for Amoxicillin Trihydrate

1

Ask your vet for a written prescription

They must provide one on request. Under the CMA Order the fee is capped at £21 from 2027.
2

Fill it at a registered online retailer

The CMA found online pharmacies 50–60% cheaper than practice dispensing on common medicines — typically £200–£300 a year.

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Prescription required

Your vet must provide a written prescription on request. You can then purchase from any licensed online retailer.

Clinical information

Citramox 500 mg/g Powder for Use in Drinking Water for Chickens, Turkeys, Ducks and Pigs — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 26 Mar 2026.

Treatment of infections in chickens, turkeys and ducks caused by bacteria
susceptible to amoxicillin.
Pigs: For the treatment of pasteurellosis.

For oral administration. Prepare the solution with fresh potable water
immediately before use. Any medicated water which is not consumed within 12
hours should be discarded and the medicated drinking water replenished.
In order to ensure consumption of the medicated water, animals should not
have access to other water supplies whilst being treated.
The following formula may be used to calculate the required concentration of
product (in milligrams of product per litre of drinking water):
x mg product per kg
bodyweight per day
X
mean bodyweight (kg)
of animals to be
treated
mean daily water consumption (l) per animal
= x mg product per
litre drinking water
To ensure a correct dosage, bodyweight should be determined as accurately as
possible to avoid underdosing. The uptake of medicated water depends on the
clinical condition of the animal. In order to obtain the correct dosage the
concentration of amoxicillin has to be adjusted taking into account water intake.
The calculated dose should be measured out with calibrated scales.
Chickens
The recommended dosage is 15 mg amoxicillin trihydrate per kg bodyweight
per day (corresponding to 30 mg product/kg·bodyweight/day).
The total period of treatment should be for 3 days or in severe cases for 5 days.
Ducks
Recommended dosage is 20 mg amoxicillin/kg bodyweight per day
(corresponding to 40 mg product/kg bodyweight/day) for 3 consecutive days.

Revised May 2020
AN: 02126/2019
Turkeys
Recommended dosage is 15-20 mg amoxicillin trihydrate/kg bodyweight per
day (corresponding to 30-40 mg product/kg·bodyweight/day) for 3 days or in
severe cases for 5 days.
Pigs
Administer in the drinking water to give 20 mg amoxicillin trihydrate/kg
bodyweight (corresponding to 40 mg product/kg·bodyweight) daily for up to 5
days.
After the end of the medication period the water supply system should be
cleaned appropriately to avoid intake of sub-therapeutic amounts of the active
substance.

This product should not be administered to rabbits, guinea pigs, hamsters,
gerbils or any other small herbivore.
Do not use in known cases of hypersensitivity to penicillins or other ß-lactam
antibiotics or to any of the excipients.
Do not use in animals with renal disease including anuria or oliguria.

Revised May 2020
AN: 02126/2019

Penicillins and cephalosporins may cause hypersensitivity reactions which may
occasionally be serious.
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).

None

Special precautions for use in animals
Not effective against beta-lactamase producing organisms.
Pigs: The uptake of medication by animals may be altered as a consequence of
illness. In case of insufficient water uptake, animals should be treated
parenterally instead.
Official, national and regional antimicrobial policies should be taken into account
when the product is used.
Use of the product should be based on identification and susceptibility testing of
the target pathogen(s). If this is not possible, therapy should be based on
epidemiological information and knowledge susceptibility of the target bacteria
at farm level, or at local/regional level.
Use of the product deviating from the instructions given in the SPC may
increase the prevalence of bacteria resistant to the amoxicillin and may
decrease the effectiveness of the treatment.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Penicillins and cephalosporins may cause hypersensitivity (allergy) following
injection, inhalation, ingestion or skin contact. Hypersensitivity to penicillins may
lead to cross reactions to cephalosporins and vice versa. Allergic reactions to
these substances may occasionally be serious.
People with known hypersensitivity the active substance or if you have been
advised not to work with such preparations should avoid contact with the
veterinary medicinal product.
Handle this product with great care to avoid exposure, taking all recommended
precautions.
If you develop symptoms following exposure such as a skin rash, you should
seek medical advice and show the doctor this warning. Swelling of the face, lips

Revised May 2020
AN: 02126/2019
or eyes or difficulty with breathing are more serious symptoms and require
urgent medical attention.
Avoid inhalation of dust. Wear either a disposable half-mask respirator
conforming to European Standard EN149 or a non-disposable respirator to
European Standard EN140 with a filter to ENl43.
Wear gloves during preparation and administration of medicated water or liquid
feed
Wash any exposed skin after handling the product or medicated water or feed.
Wash hands after use.

interaction
The product should not be administered with antibiotics that have a
bacteriostatic mode of action, such as tetracyclines, macrolides,
sulphonamides.

Do not store above 30ºC.
Keep the bags tightly closed.

Revised May 2020
AN: 02126/2019

Meat and offal:
Chickens 1 day
Ducks 9 days
Turkeys 5 days
Pigs 2 days
Not for use in birds producing or intended to produce eggs for human
consumption.
Do not use within 3 weeks of the start of the laying period.
5.

This information is sourced from the official Summary of Product Characteristics (SPC) published by the Veterinary Medicines Directorate (VMD). It is provided for informational purposes only and does not replace professional veterinary advice. Always consult your vet before administering any medication.