Buy Stresnil 100mL Injection Online

Stresnil 100mL Injection is a veterinary injectable medicine containing azaperone 40mg/mL. Despite the Equines Vet store name, Stresnil is not an equine medicine: current official veterinary medicine information identifies pigs/swine as the target species.

Azaperone is a neuroleptic sedative of the butyrophenone class. Stresnil is used in pigs for veterinary management of aggression and stress, including situations involving mixing or regrouping, and is also used for certain obstetric circumstances and as premedication for local or general anesthesia.

The 100mL presentation is an established Stresnil package size. French veterinary authorization information, for example, lists Stresnil 40mg/mL in a 100mL vial and identifies it as a prescription veterinary medicine.

Because azaperone is a potent sedative, Stresnil should be administered only according to the product information applicable to the particular market and under appropriate veterinary supervision.

What Is Stresnil 100mL?

Stresnil is an injectable veterinary medicine based on azaperone.

The documented formulation contains:

• Azaperone: 40mg per mL
• Injectable aqueous solution
• 100mL vial presentation

Official European veterinary medicine information identifies the target species as pigs and the administration route as intramuscular injection.

The Canadian product label similarly describes Stresnil as a sedative-tranquilizer for swine and states that each mL contains 40mg of azaperone.

Stresnil 100mL for Pigs

Stresnil is specifically associated with swine veterinary medicine.

The product is used in situations where reducing aggression, stress or excessive excitement is part of the veterinarian’s treatment objective.

This can be particularly relevant when pigs are:

• Being mixed
• Being regrouped
• Experiencing aggression
• Under transport-related stress
• Requiring certain obstetric procedures
• Being prepared for anesthesia

The exact approved indications can differ slightly between jurisdictions, so the local label should always be consulted.

Stresnil Active Ingredient: Azaperone

The active ingredient in Stresnil is azaperone.

Azaperone belongs to the butyrophenone group of medicines and has sedative and tranquilizing properties.

Official European information describes azaperone as a neuroleptic sedative for pigs.

Its effects can help reduce excessive excitement and aggressive behavior in appropriate pigs.

Because it is a pharmacologically active sedative, Stresnil is not a nutritional supplement or ordinary livestock calming product.

How Stresnil Works

Azaperone acts on the central nervous system and produces a predictable sedative and tranquilizing effect in pigs.

The Canadian product information describes Stresnil as fast-acting, with onset approximately 5–10 minutes following intramuscular injection. It reports peak effects at approximately 15 minutes in young animals and 30 minutes in mature animals, with effects generally lasting approximately one to six hours.

Individual responses can vary.

After administration, pigs should be handled according to veterinary instructions and kept in an appropriate, calm environment during the induction period.

Stresnil for Aggression in Pigs

One of the principal applications of Stresnil is the management of aggression.

Pigs can become aggressive when social groups are changed because animals may compete to establish a new social hierarchy.

Mixing pigs from different pens or litters can therefore result in fighting.

The Canadian label states that Stresnil is indicated for prevention of aggression when mixing or regrouping pigs and for control of aggression in sows.

Reducing aggressive behavior can help make certain regrouping situations more manageable.

Stresnil for Mixing and Regrouping Pigs

Regrouping is a common management event in swine production.

When unfamiliar animals are introduced to one another, fighting can occur.

Veterinary-directed use of azaperone may help reduce excessive aggression during this process.

The goal is not to replace appropriate husbandry.

Good management should still include suitable:

• Space
• Feeding arrangements
• Water access
• Grouping strategies
• Handling
• Observation

Medication should form part of an appropriate veterinary and animal-management plan.

Stresnil for Transport Stress

Official product information identifies transport-related stress among the circumstances in which Stresnil may be used in pigs.

Transport can expose pigs to:

• Handling
• Confinement
• Novel environments
• Noise
• Temperature changes
• Social disruption
• Loading and unloading

A veterinarian should determine whether sedative treatment is appropriate for the individual animals and circumstances.

Stresnil and Obstetric Veterinary Care

The veterinary product information also describes use in certain obstetric conditions.

Examples listed in the UK product characteristics include:

• Cessation of parturition due to excitement
• Assistance during manual delivery
• Vaginal inversion
• Uterine prolapse
• Pathological straining

These are veterinary situations requiring professional assessment.

Stresnil should not be administered simply because a sow is having difficulty giving birth without determining the underlying problem.

Stresnil as a Pre-Anesthetic Medicine

Stresnil can also be used as premedication for local or general anesthesia in pigs according to official product information.

Premedication may help reduce stress and facilitate subsequent veterinary procedures.

The veterinarian determines the appropriate anesthetic protocol based on the procedure, animal condition and other medicines being administered.

Stresnil Injection 100mL Administration

Official product information identifies intramuscular administration for Stresnil.

The UK product information specifies strict intramuscular administration behind the ear and gives specific injection technique instructions.

Because azaperone is a potent sedative, administration should be performed by a veterinarian or appropriately trained person.

The exact administration instructions on the label supplied with the product should always take priority.

Stresnil Dosage for Pigs

Stresnil dosing is weight- and indication-dependent.

The Canadian label specifies a recommended dose of 2.2mg azaperone per kg body weight, equivalent to approximately 1mL of Stresnil per 18.2kg (40lb) for that particular labeled use.

European product information describes a range of recommended doses depending on the indication, with azaperone doses ranging from approximately 0.4 to 2mg/kg in the evaluated products.

This is an important reason not to use one generic dosing schedule for every situation.

The veterinarian should select the appropriate dose based on:

• Pig’s body weight
• Age
• Sex
• Clinical purpose
• Level of stress or aggression
• Planned procedure
• Other medicines
• Applicable local label

Why Stresnil Dosing Must Be Accurate

Azaperone produces sedation.

An inappropriate dose can result in an excessive or inadequate response.

The veterinarian should calculate the dose according to body weight and the particular indication.

Do not increase the amount because an animal appears insufficiently sedated without professional direction.

Likewise, repeated administration should follow the approved product instructions.

Stresnil and Boars

Special attention is required when treating boars.

The UK product information warns that a dose exceeding 0.5mL per 20kg in boars should be avoided because higher doses can cause penile extrusion, potentially resulting in injury.

This is an important product-specific precaution and demonstrates why dosing should not be generalized across different pig categories.

Stresnil and Cold Weather

The official product information advises avoiding use in very cold conditions because peripheral vasodilation may increase the risk of cardiovascular collapse.

Environmental conditions should therefore be considered when veterinary treatment is planned.

Animals receiving sedative treatment should be monitored and managed appropriately throughout the period of drug effect.

Stresnil and Handling After Injection

The Canadian label states that after administration pigs should be left undisturbed in a quiet environment for approximately 20 minutes.

This reflects the importance of allowing the sedative effect to develop without unnecessary stimulation.

Handlers should follow veterinary instructions regarding:

• Movement
• Handling
• Noise
• Transport
• Physical restraint
• Recovery

Stresnil Safety Precautions

Stresnil should be treated as a professional veterinary medicine.

Important precautions include:

• Use only in the target species.
• Follow the approved route.
• Calculate doses according to body weight.
• Avoid unnecessary handling during sedation.
• Consider environmental temperature.
• Keep treated pigs appropriately monitored.
• Follow local veterinary requirements.
• Prevent accidental human exposure.

Accidental Self-Injection

People administering Stresnil should take particular care to avoid accidental self-injection.

The French veterinary product information specifically warns that care should be taken to prevent accidental self-injection because azaperone is a potent molecule.

If accidental injection occurs, seek medical attention promptly and provide the healthcare professional with the product information.

Stresnil and Other Medicines

The veterinarian should know about all medicines being administered to the pig.

This includes:

• Other sedatives
• Tranquilizers
• Anesthetics
• Analgesics
• Anti-inflammatory medicines
• Antibiotics
• Other injectable medicines

The veterinarian can determine whether combinations are appropriate.

Stresnil for Food-Producing Pigs

Stresnil is used in pigs, including animals that may enter the food chain, so withdrawal requirements are particularly important.

The European Medicines Agency reviewed Stresnil and related azaperone products specifically in relation to meat and offal withdrawal periods and maximum injection volumes per site.

Current withdrawal periods can vary by jurisdiction and product authorization.

For example, the European Union veterinary medicine database currently lists an 18-day withdrawal period for meat and offal for a German-authorized Stresnil product.

Always use the withdrawal period applicable to the exact product and country rather than copying a period from another market.

Stresnil and Meat Production

Before treated pigs are sent for slaughter, producers must comply with the applicable withdrawal period.

The withdrawal period exists to help ensure residues in edible tissues fall within established safety requirements.

The veterinarian or local product label should provide the relevant information.

Do not assume that a withdrawal period from an older product label or another country remains current.

Stresnil Storage

Current product information for a 100mL Stresnil presentation states that the medicine should be stored at a temperature not exceeding 25°C. It also specifies keeping the primary container in the outer packaging and storing the vial inverted before opening to reduce the risk of crystallization.

The documented shelf life is three years when packaged for sale, with a 28-day period after first opening in the referenced product information.

Always follow the storage and in-use instructions printed on the actual product supplied.

Buying Stresnil 100mL Injection

Customers searching for Stresnil 100mL Injection should verify the complete product information before purchasing.

Important details include:

Brand: Stresnil
Presentation: 100mL vial
Active ingredient: Azaperone
Strength: 40mg/mL
Dosage form: Injectable solution
Target species: Pigs
Administration: Intramuscular
Category: Sedative/tranquilizer
Manufacturer: Product authorization varies by market

Stresnil is not a general horse medication despite being listed on an equine-focused website.

Stresnil 100mL for USA Customers

Customers in the United States should verify the current regulatory status of Stresnil before purchasing or using it.

Veterinary medicines can have different approvals, labels and prescription requirements in different countries.

The Canadian product information identifies Stresnil as a veterinary product for swine, while European regulatory databases similarly identify pigs as the target species.

Local veterinary requirements should therefore be followed.

Stresnil for Canada

Health Canada’s database lists STRESNIL Injection as a marketed veterinary product.

The Canadian labeling identifies azaperone as the active ingredient and describes Stresnil as a sedative-tranquilizer for swine.

Canadian customers should follow the current Canadian veterinary label and applicable prescription requirements.

Stresnil for Europe

Stresnil 40mg/mL is authorized in various European markets as a veterinary injectable for pigs.

The European Union Veterinary Medicines database identifies the target species as pig, the active substance as azaperone and the route as intramuscular.

The European Medicines Agency has also evaluated Stresnil and related products in connection with withdrawal periods and safe use in pigs.

Customers in France, Germany, Spain, the Netherlands and other European countries should check the current national authorization and label applicable in their country.

Stresnil for Australia and Other Markets

Customers in Australia, Mexico and other international markets should verify local authorization before purchasing or importing Stresnil.

The same brand name does not necessarily mean identical regulatory status in every country.

Always verify:

• Local authorization
• Prescription status
• Target species
• Approved indications
• Administration requirements
• Withdrawal period
• Import rules

Natural Search Terms for Stresnil

This product page naturally covers relevant searches including:

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These terms describe the product and its documented applications without unnecessarily repeating the same phrase.

Frequently Asked Questions

What is Stresnil 100mL Injection?

Stresnil 100mL is a veterinary injectable medicine containing azaperone 40mg/mL and intended for use in pigs.

What is the active ingredient in Stresnil?

The active ingredient is azaperone, at a concentration of 40mg/mL.

What is Stresnil used for?

Stresnil is used in pigs for veterinary management of aggression, stress and selected obstetric and anesthetic situations.

Is Stresnil a sedative?

Yes. Azaperone is a neuroleptic sedative, and Stresnil is described as a sedative-tranquilizer for pigs.

Is Stresnil for horses?

No. Current official product information identifies pigs as the target species.

How is Stresnil administered?

The official product information identifies intramuscular injection, with specific instructions for administration behind the ear in pigs.

Can Stresnil be used for aggressive pigs?

Yes. Prevention and control of aggression are among the documented indications.

Can Stresnil help with transport stress?

Transport-related stress is among the indications described in official product information.

What is the Stresnil withdrawal period?

Withdrawal periods vary by country and authorization. One current EU database entry specifies 18 days for meat and offal in pigs. Always follow the current local label.

How should Stresnil 100mL be stored?

The referenced product information specifies storage at no more than 25°C and gives additional instructions concerning the original packaging and vial position.

Is Stresnil prescription-only?

In several jurisdictions it is a prescription veterinary medicine. For example, current European authorization information identifies it as subject to veterinary prescription.

Stresnil 100mL Injection — Equines Vet

Stresnil 100mL Injection is an azaperone-based veterinary sedative formulated for pigs, not horses. Each mL contains 40mg of azaperone, and the medicine is administered by intramuscular injection according to the applicable veterinary product information.

Stresnil is used in swine veterinary medicine for circumstances including aggression, regrouping, stress, certain obstetric conditions and premedication for anesthesia.

For pig producers searching for Stresnil 100mL, Stresnil Injection for Pigs, azaperone 40mg/mL, azaperone injection for swine, or pig sedative injection, the key consideration is that this is a potent veterinary medicine requiring appropriate professional handling.

The 100mL vial provides a practical presentation for veterinary and livestock use, while the correct amount must be calculated according to the pig’s body weight, treatment purpose and applicable product label. Different indications can have different dosing recommendations.

Special attention should be paid to boars, environmental temperature, injection technique, accidental human exposure and post-treatment handling. Official information specifically warns about excessive dosing in boars and use during very cold conditions.

Because Stresnil is used in food-producing pigs, withdrawal requirements must also be followed carefully. Current European information lists an 18-day meat and offal withdrawal period for one authorized product, while other jurisdictions may have different requirements.

For Equines Vet, the product should therefore be presented accurately as a swine veterinary medicine, even though the website specializes in equine products. Clear species identification helps customers avoid confusing Stresnil with medicines intended for horses or other animals.

Stresnil 100ML Injection Treatment and prevention of aggressiveness.
Stress inhibition (anxiety and nervousness), preventing the struggles that ensue when mixing or regrouping pigs.
Cardiac overload
Transportation of boars and breeders, provided that this is not at the slaughterhouse.
Preanesthetic in major surgery.
Immobilizer in minor surgery.
Reduction of the excitation of sows during childbirth and lactation, as well as aggressiveness against piglets.
Effect of demolition and immobilization.

Active Ingredient: Azaperone

Species: Pigs

Presentations:

STRESNIL 100ML is a neuroleptic belonging to the butyrophenone class, with specific use in pigs. It produces a predictable psychomotor sedation after intramuscular administration, with no signs of narcosis. After administration the animals become quiet and indifferent to the environment. The degree of sedation is dependent on the dose administered. Adult animals need comparatively lower doses compared to growing animals. In small doses (0.5 mg / kg) the animals are slightly sedated, but can be easily managed. At increasing doses the animals become heavier, and slower in movements at 2 mg / kg the animal falls in decubitus and remains immobile / lying about 2 hours, and ceases to be aggressive. The induction period is short. The maximum effect is reached 15 minutes after administration in young animals and 30 minutes in adult animals. The duration of action is 1-3 hours and depends on the dose and weight of the animal. After treatment the animal should be left alone, in a quiet environment. If the animal is disturbed or agitated during the induction period the results obtained may be unsatisfactory.

INDICATIONS, DOSAGE AND ROUTE
( S) OF ADMINISTRATION Aggressive sows (which do not accept newborn piglets, do not allow them to suck or bite them) 1ml / 20kg. Sows will accept newborn piglets 1 / 2-1 hours after treatment and may even accept piglets from other sows. For the administration, a calm and slow approach of the animal is necessary in order not to scare him. The indicated dose should be strictly observed. If the doses are too small, the aggression is reduced only temporarily. If the doses are too high, the animals will relapse after waking up.

SPECIES FOR STRESNIL 100ML
PIGS.

OBSTETRICAL INTERVENTIONS : 1ml / 20kg in case of termination of parturition due to excitation, in case of assisted parturition (manual extraction of piglets), in case of exaggerated contractions, or for correction of vaginal or uterine prolapse.

CARDIACA OVERLOAD  (tachycardia, high pulse) 1ml / 100kg. The animal calms down within minutes of administering the product. The tremors decrease and the respiratory movements decrease in frequency and increase in amplitude. Cyanosis gradually decreases and the pulse slows down. It is very important that treatment is instituted immediately.

TRANSPORTATION OF PICKED PIGS  : 0.4 mg / kg to 2 mg / kg (1 ml / 100 kg to 1 ml / 20 kg). A dose of 0.4 mg / kg, injected 15-30 minutes before transport, reduces mortality and weight loss during transport. The dose can be increased up to 2 mg / kg to prevent fights during transport. The animals must have sufficient space to lie down and the truck must have adequate ventilation. The effect of the product lasts up to 2-3 hours after injection.
TRANSPORT OF THE SWEETS  : dose: 1 mg / kg (0.5 ml / 20 kg).
The animals are injected about half an hour before loading. During the induction period, the animals should be kept separately. The animals remain drowsy for about two to three hours after the injection.
Not more than 1 mg / kg will be injected. Overdose can induce penis relaxation, which can lead to injury. Prevention and control of aggression and post-regrouping fights 2 mg / kg (1 ml / 20 kg).

Pigs from different nests or boxes should be brought together in a box immediately after the injection of Stresnil. After only a few minutes, they will sleep together, regardless of their origin. Subsequently, no more violent struggles occur. However, all animals must be treated. The indicated dose should be observed. If the dose is too low, the animals will be sedated but the aggression will not be faded, or it will only be temporarily diminished. The shelter (hall) must be closed during the day of treatment. The still unmated boars can be slightly aggressive after “awakening”. If necessary, a further dose of  should be given. Usually, after that, the animals will remain completely decubbed. Newly weaned piglets can be Stresnil injected with STRESNIL 100MLupon arrival in the fattening unit.Animal fights will calm down shortly after Stresnil injection. Animals will no longer fight even when the effect of the product has disappeared.
Premedication with local and general anesthesia: 1 to 2 mg / kg IM (0.5 to 1 ml / 20 kg).
When STRESNIL 100ML is used for general anesthesia, the dose of the anesthetic should be reduced due to the potentiating effect of STRESNIL 100ML. If the results are insufficient, the injection technique (deep intramuscular injections) and the accuracy of the dose used should be reconsidered.
For all indications, the injection is given strictly intramuscularly behind the ear. A long hypodermic needle should be used and the injection should be as close as possible behind the ear and perpendicular to the skin. If heavy, corpulent animals are injected into the cervical region using a short needle, there is a risk of injecting some of the drug into the fat layer. In this case, the injection may have insufficient effect. If insufficient results are obtained, the injection technique (deep intramuscular injections, behind the ear) and the accuracy of the dose used should be reconsidered.

CONTRAINDICATIONS
Due to possible tissue residues, the use of Stresnil is contraindicated for the transport or regrouping of the pigs to be slaughtered within seven days after treatment. The use of Should be avoided in a very cold environment due to the potential for risk of cardiovascular collapse due to peripheral vasodilation.

SIDE EFFECTS o
None. If you notice any serious reactions or other effects not mentioned in this leaflet, please inform your veterinarian.

SPECIAL PRECAUTIONS FOR USE IN ANIMALS
In animals, the dose of 1 mg / kg should not be exceeded.
Use during pregnancy, lactation:
At the therapeutic dose, Stresnil has no adverse effect on the mechanism of parturition, lactation or maternal instinct. STRESNIL 100ML can be used in pregnant animals and during the lactation period. Interactions with other medicinal products or other forms of interaction:
When Stresnil is used as a premedication to produce general anesthesia, the dose of the anesthetic should be reduced due to the potentiating effect of STRESNIL 100ML.

OVERDOSAGE  STRESNIL 100ML (symptoms, emergency procedures, antidotes):
Salivation and breathing may occur if overdose occurs. These manifestations disappear spontaneously and do not lead to further conditions. In boars, penile relaxation may occur after a dose exceeding 1 mg / kg. This can result in penile lesions.

INCOMPATIBILITIES STRESNIL 100ML
Do not mix with any other medicine in the same syringe.

WAITING TIME for STRESNIL 100ML
Meat and organs: 7 days.

Treatment and prevention of aggressiveness.
Stress inhibition (anxiety and nervousness), preventing the struggles that ensue when mixing or regrouping pigs.
Cardiac overload
Transportation of boars and breeders, provided that this is not at the slaughterhouse.
Preanesthetic in major surgery.
Immobilizer in minor surgery.
Reduction of the excitation of sows during childbirth and lactation, as well as aggressiveness against piglets.
Effect of demolition and immobilization.