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POM-V Prescription Required Companion Animal

VETERELIN 4 microgram/ml Solution for Injection for Cattle, Horses, Pigs, and Rabbits

Active ingredient: Buserelin

Form

Injection

Species

Cattle Horses Pigs Rabbits

Manufacturer

Laboratorios Calier, SA

VMD MA No.

20634/3001

What it's used for

depending on breeding conditions For mares - Ovulation induction and thereby to synchronise ovulation more closely with mating in mares. - Treatment of fol...

Full indications, dosage and side effects ↓
View official SPC (PDF)

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Prescription required

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Clinical information

VETERELIN 4 microgram/ml Solution for Injection for Cattle, Horses, Pigs, and Rabbits — SPC Details

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

depending on breeding conditions
For mares
- Ovulation induction and thereby to synchronise ovulation more closely with mating in
mares.
- Treatment of follicular cysts – with or without symptoms of nymphomania
For female rabbits for reproduction
Improvement of conception rate and ovulation induction at post partum insemination.
For sows (sexually mature gilts):
Ovulation induction after oestrus synchronisation with an analogue of progestagen
(altrenogest) in order to perform a single artificial insemination.
In pigs, the preferred route of administration is intramuscularly (i.m.), but it may also be
injected intravenously (i.v.).
SpeciesIndication
µg
Buserelin
per
animal
ml Veterelin
4µg/ml per
animal
Treatment of anoestrus 205Ovulation induction205
Cows
Delayed ovulation102.5
Improvement of conception rate in artificial
insemination procedures, also after
synchronisation of oestrus with a
analogue. Results may however vary
depending on breeding conditions.
For oestrus synchronisation in cows
according to a 10 day fixed time
insemination regime, buserelin should be
administered at day 0 followed by
PGF2alpha treatment at day 7, and a
second buserelin treatment at day 9
according to the mentioned posology
102.5
Follicular cysts with or without symptoms
of nymphomania
Treatment of follicular cysts -with or
without symptoms of nymphomania
Mares
Ovulation induction and thereby to
synchronize ovulation more closely with
mating in mares.
40 10
Sows
(sexually
mature gilts)
Ovulation induction after oestrus
synchronization with an analogue of
progestagen (altrenogest) in order to
perform a single artificial insemination.
Administration should be done 115-120
hours after the end of synchronization with
a progestagen. A single artificial
insemination should be performed 30-33
hours after VETERELIN administration.
102.5
Improvement of conception rate0.80.2Female
rabbits for
reproduction
Ovulation induction at post-partum
insemination
0.80.2
The veterinary medicinal product should be administered once.
The vial can only be broached a maximum of 20 times. An automatic syringe device, or
a suitable withdrawal needle, must be used to avoid excessive perforation of the
closure.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
None known.
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 package leaflet for
respective contact details.
Treatment with a GnRH (gonadotrophin releasing hormone) analogue is only
symptomatic; the causes underlying a fertility disorder are not eliminated by this
treatment.

Special precautions for safe use in the target species:
In sows (sexually mature gilts), use of the veterinary medicinal product contrary to the
recommended protocols may result in the formation of follicular cysts which may
detrimentally affect fertility and prolificacy. An aseptic technique is recommended.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
Avoid eye and skin contact with the solution for injection. In case of accidental eye
contact, rinse thoroughly with water. Should skin contact with the veterinary medicinal
product occur, wash the exposed area immediately with soap and water, as GnRH
analogues may be absorbed through the skin.
People with known hypersensitivity to buserelin or benzyl alcohol should avoid contact
with the veterinary medicinal product.
The veterinary medicinal product should not be administered by pregnant women, as
buserelin has been shown to be foetotoxic in laboratory animals.
Women of child-bearing age should administer the veterinary medicinal product with
caution.
When administering the veterinary medicinal product, care should be taken to avoid
accidental self-injection by ensuring that animals are suitably restrained and the
application needle is shielded until the moment of injection.
In case of accidental self-injection, seek medical advice immediately and show the
package leaflet or the label to the physician. Wash hands after use.
Special precautions for the protection of the environment
Not aplicable
None known.
Do not store above 25
o
C.
Keep the vial in the outer carton in order to protect from light.
Meat and offal: zero days
Milk: zero hours

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.

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