POM-V Prescription Required

Clynav solution for injection for Atlantic salmon

Active ingredient: Salmon pancreas disease virus

Form

Injection

Species

Atlantic salmon

Manufacturer

Intervet International B.V.

VMD MA No.

EU/2/16/197/001

What it's used for

For the active immunisation of Atlantic salmon to reduce impaired daily weight gain, and reduce mortality, and cardiac, pancreatic and skeletal muscle lesi...

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 Salmon pancreas disease viru...

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

Clynav solution for injection for Atlantic salmon — SPC Details

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

For the active immunisation of Atlantic salmon to reduce impaired daily weight gain,
and reduce mortality, and cardiac, pancreatic and skeletal muscle lesions caused by
pancreas disease following infection with salmonid alphavirus subtype 3 (SAV3).
Onset of immunity occurs within 399 degree days (mean water temperature in °C
multiplied by number of holding days) following vaccination.
Duration of immunity: 1 year for reduction in impaired daily weight gain, and cardiac,
pancreatic and skeletal muscle lesions and 9.5 months for reduction of mortality
(demonstrated in a laboratory efficacy study in saltwater conditions using a
cohabitation challenge model).

Revised: February 2026
AN: 03361/2025Page 2 of 5

None.

Atlantic salmon:
Very common
(>1 animal / 10 animals treated):
Abnormal swimming in fish
Fish colour change
, Inappetence
Common
(1 to 10 animals / 100 animals
treated):
Puncture wound
1
for up to two days.
for up to seven days.
for up to nine days.
Needle injuries can persist in up to 5% of fish for at least 90 days and can be seen
both macroscopically and microscopically.
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 also the last section of the package leaflet for
contact details.

Revised: February 2026
AN: 03361/2025Page 3 of 5

Vaccinate healthy animals only.

Special precautions for use in animals
A minimum body weight of 25 g is recommended at vaccination.
Special precautions to be taken by the person administering the veterinary
medicinal product to animals
Personal protective equipment, for example, consisting of appropriate protective
gloves, should be worn when handling the veterinary medicinal product.
In case of accidental self-injection, seek medical advice immediately and show the
package leaflet or the label to the physician.
Special precautions for the protection of the environment
Not applicable
Other precautions
Not applicable

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 and transport refrigerated (2 °C – 8 °C).

Zero degree days.

Revised: February 2026
AN: 03361/2025Page 4 of 5
5. IMMUNOLOGICAL PROPERTIES
Pharmacotherapeutic group: Immunologicals for Atlantic salmon
ATCvet code: QI10AX.
CLYNAV stimulates active immunity against salmonid alphavirus subtype 3 (SAV3).
CLYNAV contains a supercoiled DNA plasmid which expresses proteins of salmon
alphavirus which induces a protective immune response in vaccinated Atlantic
salmon.

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.