Tranquiline 35 mg/ml Oral Gel for Dogs
Active ingredient: Acepromazine
Form
Gel
Species
Manufacturer
Floris Holding B.V.
VMD MA No.
56190/5002
What it's used for
Anti-emetic effect, in case of vomiting associated with motion sickness.
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Tranquiline 35 mg/ml Oral Gel for Dogs — SPC Details
Source: VMD Summary of Product Characteristics (SPC). Last updated 27 Mar 2026.
Deeper sedation: 2.0 mg acepromazine / kg body weight.
Pre-medication: 3.0 mg acepromazine /kg body weight.
Anti-emetic effect: 1.0 mg/kg body weight.
The dose to be administered to dogs weighing
mg/kg for any level of sedation/premedication.
The above dosage information is provided as a guideline and should be adapted to
each patient, taking into account the various factors (e.g. temperament, breed,
bodyweight, nervousness etc.) that may affect the sensitivity to sedatives.
The following tables are intended as a dispensing guide, depending on the desired
degree of sedation:
Prefilled 10 ml syringe
Light sedationDeeper sedationPre-medicationBodyweightGel
(ml)
Dose range
(mg/kg)
Gel
(ml)
Dose range
(mg/kg)
Gel
(ml)
Dose range
(mg/kg)
> 17.5 kg – 25 kg0.501.00 – 0.701.002.00 – 1.401.503.00 – 2.10> 25 kg – < 35
kg
0.500.70 – 0.501.502.10 – 1.502.002.80 –2.00
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Glass bottle
Light sedationDeeper sedationPre-medicationBodyweightGel
(ml)
Dose range
(mg/kg)
Gel
(ml)
Dose range
(mg/kg)
Gel
(ml)
Dose range
(mg/kg)
> 1.75 kg – 3.5
kg
0.051.00 – 0.500.102.00 – 1.000.153.00 – 1.50> 3.5 kg – 5.25
kg
0.101.00 – 0.670.202.00 – 1.330.303.00 – 2.00> 5.25 kg – 7.0
kg
0.151.00 – 0.750.302.00 – 1.500.453.00 – 2.25> 7.0 kg – 8.75
kg
0.201.00 – 0.800.402.00 – 1.600.603.00 – 2.40> 8.75
kg – 10.5 kg
0.251.00 – 0.830.502.00 – 1.670.753.00 – 2.50> 10.5 kg – 14
kg
0.301.00 – 0.750.602.00 – 1.500.903.00 – 2.25
> 14 kg – 17.5
kg
0.401.00 – 0.800.802.00 – 1.601.203.00 – 2.40> 17.5 kg – 21
kg
0.501.00 – 0.831.002.00 – 1.671.503.00 – 2.50> 21 kg – 24.5
kg
0.601.00 – 0.861.202.00 – 1.711.803.00 – 2.57> 24.5 kg – 28
kg
0.701.00 – 0.881.402.00 – 1.752.103.00 – 2.63> 28 kg – < 35
kg
0.801.00 – 0.801.602.00 – 1.602.403.00 – 2.40
Particular care should be taken with regard to the accuracy of dosing. To ensure
accuracy of dosing, the bodyweight of the animal to be treated should be determined
prior to dosing.
Prefilled syringe
The veterinary medicinal product is filled into a 10 ml polyethylene syringe. The
flanged plunger has a locking ring which should be adjusted to supply the volume
required in accordance with the dosage guidelines. 1.0 ml intervals are printed on the
syringe plunger, but the plunger is indented/flanged at intervals of 0.5 ml. A single
turn of the locking ring will move the ring backwards allowing a dose volume of 0.5 ml
to be expelled. Two turns of the locking ring will supply a dose volume of 1.0 ml.
Three turns of the locking ring are required for a dose of 1.5 ml.
The syringe is brought into the animal's mouth and the appropriate dose is expelled
into the animal's cheek.
The gel can also be mixed with food.
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Glass bottle
The veterinary medicinal product is filled into 10 ml glass bottles with child resistant
closure and supplied with a syringe with a dose graduation allowing accurate dosing.
The 1 ml syringe can administer 0.05 to 1.0 ml with 0.05 ml increments. Withdraw the
appropriate dose from the bottle using the supplied syringe. The syringe is brought
into the animal's mouth and the appropriate dose is expelled into the animal's cheek.
Some veterinary medicinal product will remain in the glass bottle, i.e. is not
extractable.
The gel can also be mixed with food.
In dogs, sedation usually sets in after 15-30 minutes and lasts 6-7 hours.
Do not use in animals in a state of severe emotional excitation.
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Do not use in animals suffering from hypothermia.
Do not use in animals with haematological disorders/coagulopathies or anaemia.
Do not use in animals with heart and or lung failure.
Do not use in animals with an existing tendency to convulsions or with epilepsy.
Do not use in dogs less than 3 months of age.
Do not use in cases of hypersensitivity to the active substance or to any of the
excipients.
Very rare
(<1 animal / 10 000 animals
treated, including isolated
reports):
Generalised CNS stimulation, Aggression
Hypothermia
Ataxia
Increased respiratory rate
Hypotension
Undetermined frequency
(cannot be
estimated from the available
data)
Hyperthermia
Miosis
Tachycardia, Arrhythmia
Lacrimation
Decreased red blood cell count
, Decreased
haemoglobin
, Thrombocytopenia
, Leucopenia
Disturbance of fertility
1
Inhibition of temperature regulation.
Transient and reversible.
Due to increased prolactin secretion which may lead to disturbances in fertility.
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 the package leaflet for
respective contact details.
Special precautions for safe use in the target species:
The veterinary medicinal product is presented in a 10 ml prefilled syringe and 10 ml
glass bottle with dosing syringe. The accuracy of dosing differs between the two
presentations.
Prefilled syringe
Given the limitations of the prefilled syringe in delivering dose volumes of less than
0.5 ml, its use in animals weighing less than 17.5 kg bodyweight for sedation or in
sensitive individuals and breeds is not recommended and the glass bottle with the 1
ml syringe should be used instead.
Glass bottle
Use of the veterinary medicinal product with the 1 ml dosing syringe in dogs less than
1.75 kg bodyweight should be based on a careful benefit-risk assessment by the
responsible veterinarian (see section 3.9).
This veterinary medicinal product should be used with caution and with reduced
dosage in the case of hepatic disease or in debilitated animals.
Acepromazine has negligible analgesic effects. Painful activities should be avoided
when handling tranquillized animals, unless treated with appropriate analgesics.
After administration of this veterinary medicinal product, animals should be kept in a
calm place and sensorial stimuli should be avoided as far as possible.
In dogs with the ABCB1-1Δ (also called MDR1) mutation, acepromazine tends to
cause more profound and prolonged sedation. In these dogs the dose should be
reduced by 25% - 50%.
In some dogs, particularly Boxers and other short-nosed breeds, spontaneous
fainting or syncope may occur, due to sinoatrial block caused by excessive vagal
tone, and an attack may be precipitated by acepromazine, so a low dose should be
used. Where there is a history of this type of syncope, or if it is suspected because of
excessive sinus arrhythmia, it may be advantageous to control the dysrhythmia with
atropine given just before the acepromazine.
Large breeds: it has been noted that large breeds of dogs are particularly sensitive to
acepromazine and the minimum dose possible should be used in these breeds.
Acepromazine should be used cautiously as a restraining agent in aggressive dogs
as it may make the animal more prone to startle and react to noises or other sensory
inputs.
AN: 01044/2025 & 01045/2025Page 3 of 9
Special precautions to be taken by the person administering the veterinary medicinal
product to animals
Acepromazine may cause sedation. Care should be taken to avoid accidental
ingestion.
To avoid accidental ingestion by a child when using the prefilled syringe: replace cap
immediately after use. Keep the broached oral syringe in the original carton and
make sure that the carton is closed properly. To avoid accidental ingestion by a child
when using the glass bottle, do not leave the filled syringe unattended and store the
properly closed bottle and used syringe in the original carton.
This veterinary medicinal product must be used and kept out of sight and reach of
children.
In case of accidental ingestion, seek medical advice immediately and show the
package leaflet or the label to the physician.
DO NOT DRIVE as sedation and changes in blood pressure may occur.
People with known hypersensitivity to acepromazine or other phenothiazines or to
any of the excipients should avoid contact with the veterinary medicinal product.
Persons with sensitive skin or in frequent contact with the veterinary medicinal
product are advised to wear impermeable gloves.
Wash hands and exposed skin thoroughly after use.
In case of accidental spillage onto the skin, immediately after exposure wash the
exposed skin with large amounts of water.
This veterinary medicinal product may cause mild eye irritation. 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.
Special precautions for the protection of the environment:
Not applicable.
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Simultaneous administration, or administration to animals recently treated with
organophosphates or procaine hydrochloride (a local anaesthetic) should be avoided,
since these molecules enhance the toxic effects of acepromazine.
Since acepromazine decreases sympathetic nervous system tone, simultaneous
treatment with blood pressure lowering products should not take place.
Antacids may cause a decrease in the gastrointestinal absorption of acepromazine
after oral administration.
Opiates and adrenaline may enhance the hypotensive effects of acepromazine.
AN: 01044/2025 & 01045/2025Page 5 of 9
Do not refrigerate or freeze.
Protect from light.
Keep the broached containers in the outer carton in order to protect from light. Store in a
dry place.
Do not leave the 1 ml dosing syringe containing veterinary medicinal product in the
sight or reach of children.
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 Acepromazine
These products share the same active ingredient and may be suitable alternatives. Always consult your vet.
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POM-VZoetis UK Limited
ACP Injection 2 mg/ml Solution for Injection
POM-VElanco GmbH
ACP Injection 2 mg/ml Solution for Injection
POM-VElanco GmbH
Large Animal Etorphilon Solution for Injection
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