POM-V Prescription Required Companion Animal

Diazedor 5 mg/ml Solution for Injection for Dogs and Cats

Active ingredient: Diazepam

Form

Injection

Species

Cats Dogs

Manufacturer

VetViva Richter GmbH

VMD MA No.

57446/4010

What it's used for

As part of a pre-anaesthetic or sedation protocol.

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 Diazepam

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

Diazedor 5 mg/ml Solution for Injection for Dogs and Cats — SPC Details

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

As part of a pre-anaesthetic or sedation protocol.

To ensure a correct dosage, body weight should be determined as accurately as
possible.
Dogs, cats:

bodyweight
(equivalent to 0.5 - 1.0 ml/5 kg). Administered as a bolus and repeated up to three
times, after no less than 10 minutes each time.

(equivalent to 0.5 - 2.0 ml/5 kg).

ml/5 kg).

- 0.2 ml/5 kg).
The rubber stopper may be safely punctured up to 100 times. (Broaching study was
performed with a 23G injection needle.)

Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Do not use in cases of severe hepatic disease.
AN: 00879/2024 & 00880/2024

Dogs, cats:
Rare
(1 to 10 animals / 10 000
animals treated):
Excitation
, Aggression
, Disinhibiting effect
.Very rare
(<1 animal / 10 000 animals
treated, including isolated
reports):
Acute hepatic necrosis
, Liver failure
.Undetermined frequency
(cannot be estimated from the
available data):
Hypotension
, Cardiac disorder
,
Thrombophlebitis
;
Increased appetite
;
Ataxia, Disorientation, Mental impairment;
Behavioural disorder.
Paradoxical reactions may be observed mainly in small breeds of dogs.
Therefore, avoid use of diazepam as a sole agent in potentially aggressive animals.
Only in cats.
Associated with rapid intravenous administration.
Mainly in cats.
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.



that are already excited.

in working animals, such as military, police or service dogs.

Special precautions for safe use in the target species:
The veterinary medicinal product should be used with caution in animals with hepatic
or renal disease and in debilitated, dehydrated, anaemic, obese, or geriatric animals.
The veterinary medicinal product should be used with caution in animals in shock,
coma, or with significant respiratory depression.
The veterinary medicinal product should be used with caution in animals affected by
glaucoma.
It is not recommended to use diazepam for convulsive disorder control in cats in case
of chronic chlorpyrifos toxicosis as organophosphate’s toxicity may be potentiated.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals:
This veterinary medicinal product is a CNS depressant. Avoid accidental self-
injection. In case of accidental self-injection, seek medical advice immediately and
show the package leaflet or the label to the physician. Do not drive, as sedation may
occur.
People with known hypersensitivity to diazepam, other benzodiazepines or any of the
excipients should avoid contact with the veterinary medicinal product.
The veterinary medicinal product can cause skin irritation. Avoid contact with skin. In
case of accidental spillage onto skin, wash with soap and water. If irritation persists,
seek medical advice.
The veterinary medicinal product can cause eye irritation. Avoid contact with eyes. If
the veterinary medicinal product comes into contact with the eyes, rinse the eyes
immediately with plenty of water and seek medical attention if irritation persists.
Diazepam may be harmful for the foetus and unborn child. Diazepam and its
metabolites are secreted into milk, thereby exerting a pharmacological effect on the
nursing neonate. As such, women of child-bearing potential and nursing mothers
should not handle this veterinary medicinal product.
Wash hands after use.
Special precautions for the protection of the environment:
Not applicable.
AN: 00879/2024 & 00880/2024

Diazepam is a central nervous system depressant which may potentiate the action of
other central nervous system depressants as barbiturates, tranquilizers, narcotics or
antidepressants.
Diazepam may enhance the action of digoxin.
Cimetidine, erythromycin, azole substances (such as itraconazole or ketoconazole),
valproic acid and propranolol may slow the metabolism of diazepam. The dose of
diazepam may need to be decreased to avoid excessive sedation.
Dexamethasone may decrease the action of diazepam.
The concomitant use with hepatotoxic dosages of other substances should be avoided.
AN: 00879/2024 & 00880/2024

Keep the ampoules/vial
This veterinary medicinal product does not require any special temperature storage
conditions.

Not applicable.

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.