POM-V Prescription Required

Sedalin 35 mg/ml Oral Gel

Active ingredient: Acepromazine

Form

Gel

Species

Horses

Manufacturer

Vetoquinol UK Limited

VMD MA No.

08007/5020

What it's used for

For sedation of horses

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 Acepromazine

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

Sedalin 35 mg/ml Oral Gel — SPC Details

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

For sedation of horses

Moderate sedation: 0.15 mg acepromazine/kg bodyweight.
The dose may be varied to administer between ½ and 1 ½ times the above
recommendation according to the level of sedation required, i.e. for mild
sedation, administer half the recommended dose and for deeper sedation,
administer 1 ½ times the recommended dose.
Because of the difficulties in ensuring the accurate delivery of small doses, the
product should only be used in horses of less than 200kg bodyweight in
accordance with a benefit / risk assessment by the responsible veterinarian.
The syringe is brought into the animal’s mouth and the suitable dose is pumped
into the cheek pouch. The palatable gel can also be mixed with food.

Not for use in animals in shock or post traumatically, or with existing severe
emotional excitation or epilepsy

Since acepromazine decreases sympathetic nervous system tone, a transient
drop in blood pressure may occur after its administration.
Inhibition of temperature regulation.
The following reversible changes are possible in the haemogram:
Transient decrease in the erythrocyte count and haemoglobin concentration as
well as in thrombocyte and leukocyte counts.
Because it increases prolactin secretion, the administration of acepromazine
may lead to disturbances in fertility.
Penile prolapsed may occur due to the relaxation of the retractor penis muscles.
Retraction of the penis should be visible within two to three hours. If this does
not take place, it is advised to contact a veterinary surgeon. Lack of retraction
is of particular concern in breeding stallions. Acepromazine has caused
paraphimosis sometimes in a sequel to priapism.

Sedation lasts for approximately six hours, although the actual time and depth
of sedation are very dependent on the status of the individual animal.
Increasing the dosage results in prolonged action and side effects but no
greater sedation.

Revised July 2025
MA split from NI following AN: 01101/2025Page 2 of 5

i) Special precautions for use in animals
Do not use in cases of post traumatic hypovolemia
ii) Special precautions to be taken by the person administering the
veterinary medicinal product to animals
In case of accidental ingestion contact a physician showing the pack insert or
product label to the physician. Wash hands and exposed skin thoroughly after
use. Persons with sensitive skin or in continuous contact are advised to wear
impermeable gloves. Avoid contact with eyes. If accidental eye contact occurs,
flush gently with running water for 15 minutes and seek medical advice if any
irritation persists.

Acepromazine potentiates the action of centrally depressant drugs.
The simultaneous use of organic phosphate esters increases the toxicity of
acepromazine. Since acepromazine decreases sympathetic nervous system
tone, it should not be given at the same time as blood pressure reducing drugs.

Revised July 2025
MA split from NI following AN: 01101/2025Page 3 of 5

Do not store above 25°C.

List of Excipients
Methyl-4-hydroxybenzoate 0.65 mg and Propyl-4-hydroxybenzoate 0.35 mg, as
preservatives
For a full list of excipients, see section

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.