Sededorm 1 mg/ml Solution for Injection for Dogs and Cats
Active ingredient: Medetomidine Hydrochloride
Form
Injection
Species
Manufacturer
Vetpharma Animal Health, S.L
VMD MA No.
32509/4000
What it's used for
- Premedication prior to general anaesthesia.
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-
1
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Sededorm 1 mg/ml Solution for Injection for Dogs and Cats — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
Use the table below to determine the correct dosage on the basis of body weight.
Maximal effect is obtained within 15-20 minutes. Clinical effect is dose-dependent,
lasting 30 to 180 minutes.
AN: 00451/2024 & 00452/2024
The veterinary medicinal product dosages in ml and corresponding amount of
medetomidine hydrochloride in μg /kg bw:
body
weight
[kg]
i.v.- Injection
[ml]
corresp.
to
[μg/kg
bw]
i.m.- Injection
[ml]
corresp. to
[μg/kg bw]
10.0880.00.10100.020.1260.00.1680.030.1653.30.2170.040.1947.50.2562.550.2244.00.3060.060.2541.70.3355.070.2840.00.3752.980.3037.50.4050.090.3336.70.4448.9100.3535.00.4747.0120.4033.30.5344.2140.4431.40.5942.1160.4830.00.6440.0180.5228.90.6938.3200.5628.00.7437.0250.6526.00.8634.4300.7324.30.9832.7350.8123.11.0830.9400.8922.21.1829.5501.0320.61.3727.4601.1619.31.5525.8701.2918.41.7224.6801.4117.61.8823.5901.5216.92.0322.61001.6316.32.1821.8
For premedication:
10-40 µg medetomidine hydrochloride per kg body weight, corresponding to 0.1-0.4
ml per 10 kg body weight. The exact dose depends on the combination of drugs used
and the dosage(s) of the other drug(s). The dose should furthermore be adjusted to
the type of surgery, length of procedure and patient temperament and weight.
Premedication with medetomidine will significantly reduce the dosage of the induction
agent required and will reduce volatile anaesthetic requirements for maintenance
anaesthesia. All anaesthetic agents used for induction or maintenance of
anaesthesia should be administered to effect. Before using any combinations,
product literature for the other products should be observed. See also section 4.5.
Cats: intramuscular injection, intravenous injection and subcutaneous use
AN: 00451/2024 & 00452/2024
For moderate-deep sedation and restraint of cats the product should be administered
at a dosage of 50 – 150 µg medetomidine hydrochloride /kg bw (corresp. to 0.05 –
0.15 ml/ kg bw). The speed of induction is slower when subcutaneous route of
administration is used.
hepatic or renal disorders.
Do not use in case of mechanical disorders of gastrointestinal tract (torsion of the
stomach, imprisonment, obstruction of the oesophagus).
AN: 00451/2024 & 00452/2024
Do not administer in conjunction with sympathomimetic amines.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Do not use in animals with diabetes mellitus.
Do not use in animals with state of shock, emaciation or serious debilitation.
Do not use in animals with ocular problems where an increase in intraocular pressure
would be detrimental.
See Section 3.7.
Very rare (< 1 animal / 10 000 animals treated, including isolated reports):Bradycardia, Hypotension, cardiac depression
,
Emesis
,
Increased sensitivity to sound,
Hypothermia, Cyanosis,
Muscle tremors,
Respiratory depression
, Pulmonary oedema
Undetermined frequency (cannot be estimated from the available data):Extrasystole, Heart block 1
st
degree, Heart block 2
nd
degree,
Coronary artery disorder (vasoconstriction), Cardiac disorder (decreased
cardiac output), High blood pressure
,
Increased urine volume (increased diuresis),
Injection site pain,
Hyperglycaemia
(reversible)
Assisted ventilation and administration of oxygen may be indicated. Atropine can
increase the cardiac rate.
5-10 minutes after injection. Cats may also vomit on recovery.
Occurs just after the administration of the product and then returns to the normal
value or slightly below
Due to a depression of insulin secretion.
Dogs weighing less than 10 kg can present frequently with the above-mentioned
adverse reactions.
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.
sedation period. The use of additional analgesics should be considered during painful
surgical procedures.
Special precautions for safe use in the target species:
During its use in premedication, the dosage of anaesthetic will be reduced in
proportion and established according to the reaction of the animal, depending on the
variability of response between animals. Special warnings and contraindications
included in the literature of the other products should be respected before carrying
out any association.
Medetomidine can produce respiratory depression; in such case, manual ventilation
and administration of oxygen may be conducted.
A clinical examination should be carried out in all animals before the use of veterinary
medicinal products for sedation and/or general anaesthesia.
Higher doses of medetomidine should be avoided in large breed dogs. Care should
be taken when combining medetomidine with other anaesthetics or sedatives
because of its marked anaesthetic sparing effects. Animals should be fasted 12
hours before anaesthesia.
The animal should be placed in a calm and quiet surrounding to let the sedation gain
its maximum effect. This takes about 10-15 minutes. One should not start any
procedure or give other medicines before maximum sedation is reached.
Treated animals should be kept warm and at a constant temperature, both during the
procedure and recovery.
The eyes should be protected by a suitable lubricant.
Nervous, aggressive or excited animals should be given the possibility to calm down
before initiation of treatment
Sick and debilitated dogs and cats should only be premedicated with medetomidine
before induction and maintenance of general anaesthesia based on a risk-benefit
assessment.
AN: 00451/2024 & 00452/2024
Care should be taken with use of medetomidine in animals with cardiovascular
disease, or which are elderly or in general poor health. Liver and kidney function
should be evaluated prior to use.
In order to reduce the recovery time after anæsthesia or sedation, the effect of
medetomidine can be reversed by the administration of an alpha-2-antagonist such
as atipemazole.
Atipamezole does not reverse the effect of ketamine. As ketamine alone can elicit
cramps, alpha-2 antagonists should not be given less than 30-40 min. after the
administration of ketamine.
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
In case of accidental oral intake or self-injection, seek medical advice immediately
and show the package leaflet or the label to the physician but DO NOT DRIVE as
sedation and changes in blood pressure may occur.
Avoid skin, eye or mucosal contact.
Wash the exposed skin immediately after exposure with large amounts of water.
Remove contaminated clothes that are in direct contact with skin.
In the case of accidental contact of the product with eyes, rinse abundantly with fresh
water. If symptoms occur, seek the advice of a physician.
If pregnant women handle the product, special caution should be observed not to
self-inject as uterine contractions and decreased foetal blood pressure may occur
after accidental systemic exposure.
Advice to doctors:
Medetomidine is an alpha2-adrenoreceptor agonist, symptoms after absorption may
involve clinical effects including dose-dependent sedation, respiratory depression,
bradycardia, hypotension, a dry mouth, and hyperglycaemia. Ventricular arrhythmias
have also been reported.
Respiratory and haemodynamic symptoms should be treated symptomatically.
AN: 00451/2024 & 00452/2024
be expected to potentiate the effect of either product and appropriate dose
adjustment should be made.
Medetomidine has marked anaesthetic sparing effects (see section 4.5 of the SPC).
AN: 00451/2024 & 00452/2024
The effects of medetomidine can be antagonised by the administration of
atipamezole.
Do not administer concomitantly with sympathomimetics or sulfamides and
trimethoprim.
Protect from light.
Protect from frost.
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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Other Products Containing Medetomidine Hydrochloride
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
Domitor 1 mg/ml Solution for Injection
POM-VOrion Corporation
Dorbene Vet 1 mg/ml Solution for Injection for Dogs and Cats
POM-VLaboratorios SYVA S.A.
Dormostart 1 mg/ml Solution for Injection for Dogs and Cats
POM-VAlfasan Nederland B.V.
Dormostart 1 mg/ml Solution for Injection for Dogs and Cats
POM-VAlfasan Nederland B.V.
Medetocord 1 mg/ml Solution for Injection for Dogs and Cats
POM-VVetpharma Animal Health, S.L
Medetor 1 mg/ml Solution for Injection for Dog and Cat
POM-VCP Pharma Handelsgesellschaft mbH
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