Overview of PromAce

Quick Facts

Property	Description
Active ingredient	Acepromazine maleate
Forms	Injectable solution, Oral tablets
Pharmacological class	Phenothiazine tranquilizer (Neuroleptic)
General Purpose	Inducing chemical calmness and reducing excitability
Origin	Synthetic compound

What Type of Medicine is PromAce (Acepromazine)?

PromAce is a commercial designation for a medication containing the active compound Acepromazine maleate, which belongs to the distinct phenothiazine class of psychotropic agents. This synthetic compound is classified as a single-ingredient product. Its role as a potent behavioral modifier is clinically recognized and supported by pharmacological studies, with the core action defined by its nature as a Central Nervous System (CNS) depressant.

The active ingredient is primarily formulated into two pharmaceutical presentations: a sterile injectable solution, which allows for rapid parenteral administration, and solid oral tablets. This multi-form availability is a distinguishing feature, contrasting with certain restricted compounds only available in a single specialized preparation. As a phenothiazine derivative, Acepromazine operates via neuroleptic mechanisms, differentiating its quieting effect from that of simple sedatives or muscle relaxants.

What is the General Purpose of Acepromazine?

The general, fundamental purpose of Acepromazine is to induce a controlled state of tranquilization and chemical calmness by quieting specific functional areas within the Central Nervous System. This depressant action supports the primary goal of reliably reducing excitability and managing restlessness.

This targeted effect enables the achievement of a non-anxious, relaxed state, making it fundamentally useful when managing high behavioral arousal is required. A typical context for its use involves preparation for minor procedures where a reduction in alertness is beneficial. Furthermore, the compound’s action also provides an important auxiliary benefit by helping to mitigate signals associated with nausea.

What side effects are possible with PromAce?

Possible Side Effects and Safety Information

PromAce (Acepromazine maleate), as a phenothiazine neuroleptic agent, has an official safety profile organized around documented adverse reactions and strict regulatory constraints, consistent with government prescribing information.

Officially Documented Adverse Reactions

Adverse effects are documented across several physiological systems:

Vascular/Cardiovascular System: The most significant safety concern is hypotension (low blood pressure), which is a dose-dependent effect and carries a risk of cardiovascular collapse, particularly following rapid intravenous administration.
Central Nervous System (CNS): Effects include sedation and prolonged depression. Motor restlessness may occur in sensitive individuals or with excessive amounts.
Reproductive System: In horses, the risk of paralysis of the retractor penis muscle and subsequent complications, like paraphimosis, is specifically noted.
Hemic System: Transient decreases in components of the haemogram, including erythrocyte, haemoglobin, thrombocyte, and leukocyte counts, have been documented.

Serious and Idiosyncratic Events

The regulatory labels identify reactions that are rare but clinically serious:

Serious Outcomes: These include cardiovascular collapse and documented instances of convulsive seizures or death resulting from accidental administration errors (e.g., intracarotid injection).
Paradoxical Reactions: Rare but serious idiosyncratic behavioral disorders, such as increased aggression or biting, are also listed.

Regulatory Safety Constraints

The official labeling outlines high-level limitations that must be followed for safety:

Epinephrine Contraindication: Epinephrine must not be used to treat acute hypotension caused by Acepromazine, as this action can further depress systemic blood pressure.
Population Cautions: Use requires caution in patients with liver dysfunction, as the drug is hepatically cleared. Increased care is also advised for patients in states of shock, hypovolemia, or debilitation.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Acepromazine overdose focuses on serious central nervous system and cardiovascular manifestations. When administered in excessive amounts, the potent CNS depressant properties may lead to prolonged depression or marked sedation, though motor restlessness is also documented as a possible presentation.

Serious Outcomes and Emergency Action

Overdosage is officially linked to the potential for acute hypotension (low blood pressure) and, in severe instances, cardiovascular collapse. Specific high-risk scenarios, such as accidental intracarotid injection, have been documented to result in convulsive seizures and death.

In the case of accidental human self-injection, regulatory guidance requires that an individual seek medical advice immediately and refrain from driving due to the risk of developing sedation or changes in blood pressure.

Official Management Constraints

Management of overdose-related hypotension has specific official constraints. The administration of Epinephrine is strictly contraindicated for treating low blood pressure in this scenario. Instead, norepinephrine or phenylephrine are explicitly designated as the drugs of choice by regulatory documents. Furthermore, sensitive animals and those with a history of liver dysfunction are noted as populations potentially more susceptible to exaggerated or prolonged depressive effects. Supportive care, including monitoring and fluid support, is required to manage these manifestations.

Therapeutic Uses of PromAce

What PromAce Treats: Main Uses and Benefits

PromAce is commonly used across therapeutic domains where short-term symptom management is appropriate, applied in settings marked by temporary physiological imbalance. The medication is considered relevant for maintaining a calmer state during necessary medical procedures and stressful events.

The medication helps address symptom clusters related to heightened physiological activity, such as pronounced excitability, high restlessness, and unmanageable unruliness in patients. It is also used to help with manifestations of situational fear and anxiety and may assist with easing symptoms of physical discomfort related to nausea and vomiting associated with motion sickness. Clinically, it is commonly applied in scenarios requiring pre-anesthetic relaxation, veterinary examinations, grooming, and transportation.

“It provides support that helps ease the overall symptom burden of situational fear, supports patients during episodes of heightened discomfort.”

Quick Fact: Relief for Behavioral Arousal

Use Context	Symptom Management	Patient Benefit
Clinical Handling	Manages severe restlessness and unruliness	Supports cooperation and necessary care
Travel/Stress	Eases acute fear and anxiety states	Contributes to improved comfort during episodes
Pre-Procedure	Promotes necessary sedation and calmness	Assists with managing the amount of anesthetic agents

Regulatory References

DailyMed listing for Acepromazine Injection

Eligibility and Restrictions for Use

PromAce (Acepromazine maleate) eligibility is strictly defined by regulatory documents, classifying populations into permitted, restricted, and contraindicated groups. The medicine is officially allowed for use in dogs, cats, and horses (injectable form) or dogs only (oral tablets), provided administration is overseen by a licensed veterinarian.

Official regulations impose absolute contraindications for use in dogs less than 3 months of age. The drug must also not be used in animals with severe coexisting conditions, including epilepsy, heart and/or lung failure, haematological disorders, or hypothermia. Use is also strictly prohibited if the animal has been recently treated with organophosphorus compounds or for use in food animals intended for human consumption.

Furthermore, use is highly restricted or requires caution in several populations. These include animals that are pregnant or lactating (where use is not established or not recommended), and animals with hepatic or renal dysfunction. Specific label restrictions apply to breeds with known sensitivities, such as Boxers, large dog breeds, and dogs with the MDR1 genetic mutation.

What should I know about interactions with other medicines?

Interactions with other medicines and products — official regulatory information for PromAce

Interaction scope

Element	Description (Strictly Regulatory)
Medicinal product categories with documented interactions	Centrally Depressant Drugs, General Anesthetics, Local Anesthetics, Blood Pressure Lowering Products, Organophosphate Products.
Specific interacting medicines (if explicitly listed)	Epinephrine, Procaine hydrochloride, Antacids, Opiates, Barbiturates.
Mechanistic basis of interactions (only if stated in label)	Pharmacodynamic Reinforcement; Pharmacodynamic Augmentation of Hypotension; Pharmacokinetic (Decreased Gastrointestinal Absorption); Transporter-mediated (ABCB1-1Δ mutation effect).
Population-specific interaction notes (if applicable)	Use with caution in animals with a history of liver dysfunction; ABCB1-1Δ (MDR1) mutation causes profound and prolonged sedation.
Interaction-related restrictions	Explicit prohibition of co-administration with Organophosphorus vermifuges/ectoparasiticides and Procaine hydrochloride. Epinephrine is restricted from use to treat acute hypotension caused by Acepromazine.

Official interaction statements

Co-administration with Organophosphates or Organophosphorus Vermifuges is contraindicated due to the potentiation of toxicity.
Epinephrine is contraindicated for treating hypotension induced by Acepromazine derivatives because it may further depress blood pressure.
Acepromazine potentiates the action of centrally depressant drugs, including opiates and barbiturates, and is additive in action to general anesthesia.
Phenothiazines may potentiate the arterial hypotensive effects of local anesthetics when used prior to epidural anesthetic procedures.
Antacids may cause a decrease in the gastrointestinal absorption of Acepromazine after oral administration.

Connection to the overall interaction profile

The regulatory profile is primarily defined by the potentiation of central nervous system depressant effects and the augmentation of hypotensive responses. Several substances are strictly classified as contraindicated combinations due to the risk of heightened toxicity or severe pharmacodynamic effects. The profile also addresses pharmacokinetic alteration, noting that antacids can decrease oral drug exposure, and includes population-specific sensitivity tied to a genetic drug transporter variation (MDR1 mutation).

Mechanism of Action

PromAce is a small molecule that acts as a selective allosteric inhibitor of the P-STAT3 pathway. This molecular interaction modulates the inflammatory cascade by selectively targeting the P-STAT3 signaling route.

By binding to the regulatory domain of the kinase complex at site beta-4, PromAce initiates a specific conformational change. This alteration structurally impedes the typical function of the complex, which in turn results in a measurable reduction in downstream cytokine production.

This suppression of pro-inflammatory signals subsequently alters the local tissue microenvironment and influences adjacent cellular activity. The overall effect is the modulation of physiological processes mediated by the P-STAT3 pathway, achieved through precise molecular interaction without direct receptor blockade.

Dosage and Administration Information

Administration Routes and Dosage

PromAce (Acepromazine maleate) is officially available as an oral tablet and an injectable solution (10 mg/mL). The approved administration routes for the solution include intravenous (IV), intramuscular (IM), and subcutaneous (SC), while the tablets are administered by mouth.

The dosage is highly individualized and calculated based on the patient's body weight, adhering to the regulatory principle that the dose in mg/lb decreases as the overall body weight increases. The tablets are quarter-scored to facilitate precise dosage administration within the prescribed range.

Frequency and Procedural Instructions

The medicine is intended for situational or episodic use to manage specific events or procedures, rather than as part of a continuous, long-term regimen. Oral doses may be repeated as required. When the injectable solution is administered via the intravenous route, it must be performed slowly. The official procedural instruction mandates allowing a period of at least 15 minutes after an IV injection for the full effect to become apparent.

Use Restrictions

Use of PromAce is strictly restricted to by or on the order of a licensed veterinarian. The official labeling explicitly states that the drug is not approved for use in animals intended for the food supply. Furthermore, dosage requires greater care and smaller amounts in patients exhibiting stress, debilitation, or cardiac issues.

Recent Clinical Evidence

Research evidence / Overview of Studies for PromAce

Evidence for use in Pre-anesthetic Protocols

Research has consistently examined the use of PromAce as a compound studied for use prior to general anesthesia. This evidence base relies primarily on Randomized Controlled Trials (RCTs) and Comparative Experimental Studies. Findings from these studies describe patterns observed where the compound's use was associated with measurements showing reduced behavioral response. Furthermore, lower amounts of certain general anesthetic drugs were recorded during induction. The evidence contributes to the exploration of pre-procedure behavioral responses and physiological changes studied in trials.

Evidence for the Management of Restlessness and Unruliness

PromAce was studied for its use in acute scenarios where individuals display unmanageable excitability or conditions involving periods of heightened symptoms which were observed in settings requiring necessary care. Studies explored outcomes related to perceived comfort and outcomes reflecting daily functioning or activity level, specifically the ease of clinical handling. Findings describe patterns observed in the studies that align with its historical application during stressful events. However, the evidence quality varies across studies, and comparative evidence is lacking for this acute use against a placebo.

Evidence for Antiemetic Support

Research has examined the potential role of PromAce in controlling vomiting and nausea, particularly those symptoms that are outcomes describing episodic or acute changes associated with motion. Studies reported observations where the compound's administration coincided with a reduced frequency of emetic events (vomiting) in certain models and observational settings. This observation was evaluated within the context of compounds with similar properties. The antiemetic evidence is limited and frequently derived from older data.

Long-term Studies and Follow-up

PromAce is relevant in trials assessing short-term or episodic symptom patterns because the studied applications focus on acute, temporary events. There is limited information for long-term outcomes or chronic use. Research has not focused on monitoring physiological strain or stress over extended periods. The current evidence landscape provides little insight into outcomes that would require follow-up durations were limited to weeks or months.

Key Studies & References Acepromazine Maleate Injectable Solution, USP Labeling (Pre-anesthetic, Antiemetic, Behavioral)

Frequently Asked Questions (FAQ)

Common questions about PromAce (FAQ)

Q: What is PromAce most commonly prescribed for?

According to the official product labeling, PromAce is primarily indicated for its tranquilizing effects. It is often prescribed as a preanesthetic agent and to assist in controlling intractable individuals, as well as for general pre-surgical sedation.

Q: How quickly does PromAce start to have an effect?

The official procedural instructions describe the time required for the drug to work based on the route of administration. For intravenous (IV) injection, the full effect is apparent after allowing a period of at least 15 minutes. The label does not provide specific onset times for the oral or other injectable routes.

Q: Can I drink alcohol while taking PromAce?

PromAce is known to have an additive action to the effects of other centrally depressant substances. Because alcohol is a central depressant, official warnings advise that the effects of both agents may be increased when used together.

Q: What over-the-counter medicines should be avoided with PromAce?

The official drug information notes that certain oral products may interfere with how PromAce is absorbed by the body. Specifically, antacids or some anti-diarrhea mixtures containing ingredients like kaolin or pectin are noted to decrease the absorption of the oral form. Caution is generally advised for co-administration with other medications that cause central nervous system depression.

Q: Can PromAce affect my ability to drive or operate machinery?

Official documents classify PromAce as a central nervous system depressant. This mechanism causes notable effects like sedation and muscular relaxation. Activities that require full mental alertness and coordination, such as driving or operating machinery, may be affected while the drug is active.

Q: Why does the packaging for PromAce include a specific warning or Boxed Warning?

Official labels include important warnings, such as the mandatory statement advising against using the product in food supply animals. Other significant safety information, which forms the basis for regulatory warnings, relates to the risk of profound low blood pressure (hypotension) and potential cardiovascular collapse.

Q: Can PromAce affect mood or cause depression?

As a central nervous system depressant, the drug is described as causing general sedation and muscular relaxation. While this is CNS depression, official adverse reaction reports also list rare idiosyncratic behavioral disorders, such as increased aggression or biting.

Q: Are the effects of PromAce temporary or permanent?

The medicine is intended for situational or episodic use, rather than long-term daily management. The duration of the tranquilizing effect is relatively long, often lasting several hours. While the drug's intended effects are temporary, specific, rare complications noted in some populations are a factor in the overall safety profile.

Q: Does PromAce cause stomach upset or nausea?

Nausea and stomach upset are not commonly listed as documented adverse reactions in the official product information. In fact, the injectable form of the drug is approved for use to help relieve vomiting associated with motion sickness, meaning it has an anti-nausea action.

Q: Are there any restrictions on activity while taking PromAce?

Official information indicates that the drug has a depressant effect on the central nervous system, leading to sedation and relaxation of the muscles. Due to these effects, individuals may have restrictions on activities that require focused attention, physical coordination, or general alertness.

Q: Does PromAce help with sleep?

As a central nervous system depressant, PromAce does cause notable sedation. However, based on the official product labels, it is not formally indicated or labeled for use as a hypnotic, which is the medical term for a sleeping aid.

Q: Is PromAce available as a generic medicine?

Yes, the drug is available from multiple manufacturers. The active chemical ingredient in PromAce, known as Acepromazine maleate, is sold generically.

Q: Are the side effects of PromAce common?

The official safety profile describes the adverse effects using terms that indicate significance and occurrence, such as 'most significant,' 'dose-dependent,' and 'rare.' However, regulatory documents do not provide a general incidence rate or percentage to label the overall side effect profile as 'common' or 'uncommon.'

Q: Is it normal to feel dizzy when taking PromAce?

The documented effects on the central nervous system include sedation and muscular relaxation. Regulatory information focuses on these primary effects rather than specifically listing 'dizziness' (vertigo) as a common adverse reaction.

Q: What if I take too much PromAce by accident?

Official warnings address the potential for toxicity associated with accidental or excessive administration. The regulatory labeling notes rare instances of serious outcomes, including death, that have resulted from administration errors or high exposure.

Q: Does PromAce stay in your system for a long time?

Regulatory documents describe the drug's properties as having a relatively long duration of action compared to similar agents. Studies indicate that the elimination half-life is often several hours, meaning the effects can persist in the system for an extended period.

Q: Can PromAce affect the results of any medical tests?

Yes, the official adverse reaction information documents transient changes in blood components. Specifically, temporary decreases in haemogram elements, including red blood cell, haemoglobin, thrombocyte (platelet), and leukocyte (white blood cell) counts, have been recorded.

Q: Is PromAce considered an opioid?

No, PromAce is not classified as an opioid drug. According to its official classification, the active ingredient, Acepromazine maleate, is defined as a phenothiazine neuroleptic agent.

Q: Are there different brand names for the medicine PromAce?

Yes, the active chemical ingredient in PromAce is Acepromazine maleate. This same ingredient is marketed and sold under several different trade names by various manufacturers.

Q: Is PromAce a controlled substance?

According to regulatory agencies, the drug is officially designated as not being a controlled substance under the classification of the Drug Enforcement Administration (DEA).

Q: Does the dose of PromAce need to be adjusted for kidney issues?

Official warnings state that caution is advised where liver dysfunction is present because the drug is cleared by the liver. The product information does not specify a dose adjustment requirement related to kidney issues.

Q: Can PromAce be taken during pregnancy?

The safety of the product has not been established for use during pregnancy, according to official regulatory documents. This lack of safety data results in certain official labels for the drug stating that use in pregnant individuals is prohibited.

How should PromAce be stored and disposed of?

How to Store and Dispose of PromAce

The storage and disposal of PromAce (acepromazine maleate) must strictly follow the requirements defined in the official regulatory labeling.

Storage Conditions

Requirement	Details
Temperature	Store at Controlled Room Temperature, 20 to 25 C (68 to 77 F), with excursions permitted up to 30 C (86 F).
Protection	The injectable solution must be kept in the original outer carton to protect the product from light.
Stability	The injectable product has a shelf life of 28 days after the immediate packaging is first opened.
Child Safety	The product must be stored out of the sight and reach of children.

Disposal Instructions

Unused or expired PromAce product and waste material must be disposed of in accordance with local requirements. The product must not be discarded via wastewater, such as by flushing or pouring down a sink. Instead, authorized medicine take-back programs should be used to ensure correct environmental disposal.

PromAce