POM-V Prescription Required

Biocillin 1000 mg/g Powder for Use in Drinking Water for Chickens, Ducks and Turkeys

Active ingredient: Amoxicillin Trihydrate

Form

Powder

Species

Chickens Duck Turkeys

Manufacturer

Bela-Pharm GmbH & Co. KG

VMD MA No.

41816/4001

What it's used for

Treatment of infections in chickens, turkeys and ducks caused by bacteria susceptible to amoxicillin.

Full indications, dosage and side effects ↓

View official SPC (PDF)

The prescription itself has a price. See what practices near you charge for a consultation and the written prescription fee.

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.

Your prescription rights → VMD register of retailers →

Prescription required

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

Clinical information

Biocillin 1000 mg/g Powder for Use in Drinking Water for Chickens, Ducks and Turkeys — 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.

To be administered in drinking water.
Prepare the solution with fresh tap water immediately before use.
Any unused medicated water should be discarded after 12 hours.
In order to ensure consumption of the medicated water, animals should not have
access to other water supplies whilst being treated.
The use of suitably calibrated weighing equipment to accurately measure the
required amount of product is recommended.
The following formula may be used to calculate the amount of product (in grams)
required per litre drinking water:
dose in mg product / kg
body weight / day
x

mean body weight (kg) of
animals to be treated
mean daily water consumption (litre) per animal = mg product
per litre
drinking water
To ensure a correct dosage, bodyweight should be determined as accurately as
possible to avoid underdosing. The intake of medicated water depends on the clinical
condition of the birds. In order to obtain the correct dosage the concentration of
amoxicillin has to be adjusted taking into account water intake.
Solubility in water varies depending on temperature and water quality as well as on
time and intensity of stirring. Under worst case conditions (4°C and soft water)
maximum solubility is approximately 1 g/l but increases by raising temperature. At
21.5°C and in hard water maximum solubility is increased to at least 1.5 g/l.
The dosage differs between species:
Chickens
The recommended dosage is 15 mg amoxicillin trihydrate per kg bodyweight
(equivalent to 15 mg product/kg/bwt) per day.

Revised: September 2021
AN: 01032/2020Page 4 of 6
The total period of treatment should be for 3 consecutive days or in severe cases for
5 consecutive days.
Ducks
Recommended dosage is 20 mg amoxicillin trihydrate/kg bodyweight (equivalent to
20 mg product/kg/bwt) per day for 3 consecutive days.
Turkeys
Recommended dosage is 15-20 mg amoxicillin trihydrate/kg bodyweight (equivalent
to 15-20 mg product/kg/bwt) per day for 3 consecutive days or in severe cases for 5
consecutive days.

Do not use this product to treat infections caused by bacteria producing the enzyme
beta lactamase.
Do not use in rabbits, hamsters, gerbils, guinea pigs or any other small herbivore.
Do not use in cases of hypersensitivity to amoxicillin trihydrate, penicillins or other ß-
lactam antibiotics.

In very rare cases 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)

Revised: September 2021
AN: 01032/2020Page 3 of 6
- very rare (less than 1 animal in 10,000 animals treated, including isolated reports).

None.

Revised: September 2021
AN: 01032/2020Page 2 of 6

Special precautions for use in animals
Official, national and regional antimicrobial policies should be taken into account
when the product is used.
Use of the product should be based on susceptibility testing of the bacteria isolated
from the animal. If this is not possible, therapy should be based on local (regional,
farm level) epidemiological information about susceptibility of the target bacteria.
Use of the product deviating from the instructions given in the SPC may increase the
prevalence of bacterial resistance to amoxicillin and may decrease its effectiveness.
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 and skin contact. Hypersensitivity to penicillins may
lead to cross reactions to cephalosporins and vice versa. Allergic reactions to these
substances may occasionally be serious.
•
ß-lactam antibiotics should avoid contact with the veterinary medicinal product.
•
precautions.
•
advice immediately and show the package leaflet or the label to the physician.
Swelling of the face, lips or eyes or difficulty with breathing are more serious
symptoms and require urgent medical attention.
•
•
Standard EN149 or a non-disposable respirator to European Standard EN140
with a filter to ENl43.
•
water.
•

The product should not be administered with antibiotics that inhibit the multiplication
of bacteria (bacteriostatic effect) such as tetracyclines, macrolides and
sulphonamides.

Keep the container tightly closed in order to protect from light and moisture.
Store in a dry place

Chickens (meat & offal): 1 day
Ducks (meat & offal): 9 days
Turkeys (meat & offal): 5 days
Not authorised for use in birds producing eggs for human consumption and 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.