POM-V Prescription Required

Porcilis Lawsonia ID 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.

06376/5006

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 ID 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.

Very common
(>1 animal / 10 animals treated):
Elevated temperature
and injection site swelling
1
Mean increase of 0.1 °C, up to 1.4 °C in individual pigs. The animals return to normal
temperature within 1 day after vaccination.
Mean diameter of approximately 1 cm, in individual pigs up to 5 cm. Injection site
swelling disappear within 4 weeks after vaccination.
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 its local representative or the national
competent authority via the national reporting system. See also the last section of the
package leaflet for respective contact details.

Vaccinate healthy animals only.

Revised: October 2024
AN: 01038/2024
This vaccine is intended for intradermal administration only.
The lyophilisate must be reconstituted in the dedicated “Solvent for Porcilis Lawsonia
ID” or in Porcilis PCV ID following the instructions given in section 4.9.

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 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.
Special precautions for the protection of the environment:
Not applicable.

Safety and efficacy data, except for protection against mortality, are available in pigs
from 3 weeks of age onwards which demonstrate that this vaccine can be
administered mixed with Porcilis PCV ID and/or non-mixed with Porcilis M Hyo ID
ONCE and/or non-mixed with Porcilis PRRS providing that administration site of
vaccines is separated by at least 3 cm. The product literature of Porcilis PCV ID,
Porcilis M Hyo ID ONCE and Porcilis PRRS should be consulted. Adverse reactions
are as described in section 4.6, except for local injection site reactions where a
maximum size of up to 7 cm may occur in individual pigs. Local reactions are very
commonly accompanied by redness and crusts and disappear within 6 weeks after
vaccination.
No information is available on the safety and efficacy of this vaccine when used with
any other veterinary medicinal product except the product mentioned above. 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.

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.