POM-V Prescription Required

Porcilis Lawsonia Lyophilisate and Solvent for Emulsion for Injection for Pigs

Active ingredient: Lawsonia intracellularis

Form

Injection

Species

Pigs

Manufacturer

Intervet International B.V.

VMD MA No.

06376/5017

What it's used for

For the active immunisation of pigs from 3 weeks of age to reduce diarrhoea, loss of daily weight gain, intestinal lesions, bacterial shedding and mortalit...

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 Lawsonia intracellularis

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

Porcilis Lawsonia Lyophilisate and Solvent for Emulsion for Injection for Pigs — SPC Details

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

For the active immunisation of pigs from 3 weeks of age to reduce diarrhoea, loss of
daily weight gain, intestinal lesions, bacterial shedding and mortality caused by
Lawsonia intracellularis infection.
Onset of immunity: 4 weeks after vaccination.
Duration of immunity: 21 weeks after vaccination.

None.

Revised: January 2025
AN: 01925/2024Page 2 of 6

Pigs:
Very common
(>1 animal / 10 animals treated):
Elevated temperature
Common
(1 to 10 animals / 100 animals treated):
Injection site swelling
Uncommon
(1 to 10 animals / 1 000 animals treated):
Anorexia, LethargyVery rare
(<1 animal / 10 000 animals treated, including
isolated reports):
Anaphylactic-type reaction
1
Mean of 0.6 °C, in individual pigs up to 1.3 °C. The animals return to normal
temperature within 1 day after vaccination.
< 5 cm diameter, disappear within 23 days.

Revised: January 2025
AN: 01925/2024Page 3 of 6
If such reactions occur, appropriate treatment is recommended.
Reporting adverse events is important. It allows continuous safety monitoring of a
veterinary medicinal product. Reports should be sent, preferably via a veterinarian, to
either the marketing authorisation holder or the national competent authority via the
national reporting system. See the package leaflet for respective contact details.

Vaccinate healthy animals only.

Special precautions for use in animals:
Not applicable.
Special precautions to be taken by the person administering the veterinary medicinal
product to 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 veterinary
medicinal 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 veterinary medicinal 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.
Special precautions for the protection of the environment:
Not applicable.
Other precautions:
Not applicable.

Safety and efficacy data in pigs from 3 weeks of age onwards are available, which
demonstrate that this vaccine can be given at the same time with Porcilis PCV M Hyo
and/or Porcilis PRRS. When Porcilis Lawsonia is given at the same time with Porcilis
PCV M Hyo, these products should be mixed (see section

Lyophilisate and solvent:
Store in a refrigerator (2 °C – 8 °C).
Do not freeze.
Protect from light.

Zero days.
5. IMMUNOLOGICAL PROPERTIES
Pharmacotherapeutic group: Inactivated bacterial vaccines (including mycoplasma,
toxoid and chlamydia) Lawsonia.
ATCvet code: QI09AB18.
The product stimulates the development of active immunity against Lawsonia
intracellularis in pigs.

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.