POM-V Prescription Required

FIXR MYC-VAC Emulsion for Injection for Chickens

Active ingredient: Mycoplasma gallisepticum

Form

Injection

Species

Chickens

Manufacturer

Kernfarm B.V.

VMD MA No.

43877/5000

What it's used for

For active immunisation of chickens to reduce egg production losses caused by Onset of immunity: 10 weeks after completion of the primary vaccination sched...

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 Mycoplasma gallisepticum

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

FIXR MYC-VAC Emulsion for Injection for Chickens — SPC Details

Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.

For active immunisation of chickens to reduce egg production losses
caused by
Onset of immunity: 10 weeks after completion of the primary vaccination
schedule
Duration of immunity: 42 weeks after completion of the primary
vaccination schedule
A reduction of thoracic and abdominal air sac lesions caused by
Mycoplasma gallisepticum was demonstrated in vaccinated birds with an
onset of immunity of 4 weeks after completion of the primary vaccination
schedule, however a duration of immunity has not been investigated

Subcutaneous use.
Dose: 0.5 ml to future layers and breeders
The vaccine must be inoculated by the subcutaneous route in the dorsal
region of the neck. Administer two doses of FIXR MYC-VAC separated
by an interval of 8 weeks from 10 weeks of age, prior to the start of egg
production.
Bring the product to room temperature and shake the bottles well before
use.

None.

After the first vaccination mild depression lasting for 2-3 days might be
commonly observed.
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).

Vaccinate healthy animals only.

Special precautions for use in animals
None.
Special precautions to be taken by the person administering the
veterinary medicinal product to the animals
To the user:
This veterinary medicinal product contains mineral oil. Accidental
injection/self-injection may result in severe pain and swelling, particularly
if injected into a joint or finger, and in rare cases could result in the loss
of the affected finger if prompt medical attention is not given. If you are
accidentally injected with this product, seek prompt medical advice even
if only a very small amount is injected and take the package leaflet with
you. If pain persists for more than 12 hours after medical examination,
seek medical advice again.
To the physician:
This veterinary medicinal product contains mineral oil. Even if small
amounts have been injected, accidental injection with this product can
cause intense swelling, which may, for example, result in ischaemic
necrosis and even the loss of a digit. Expert, PROMPT, surgical attention
is required and may necessitate early incision and irrigation of the
injected area, especially where there is involvement of finger pulp or
tendon

interaction
No information is available on the safety and efficacy of this vaccine when
used with any other veterinary medicinal product. A decision to use this
vaccine before or after any other veterinary medicinal product therefore
needs to be made on a case-by-case basis.

Store in a refrigerator (2°C - 8°C).
Do not freeze.

Zero days.
5. IMMUNOLOGICAL PROPERTIES
Pharmacotherapeutic group: Immunologicals for Aves, inactivated
bacterial vaccines (including mycoplasma, toxoid and chlamydia) for
domestic fowl.
ATCvet code: QI01AB03.
Inactivated vaccine to stimulate active immunity against
gallisepticum.
Specific antibodies are detected from 4 weeks until 42 weeks post
vaccination in vaccinated animals.

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.