Buton

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Buton

Method of action: Antispasmodic

Treatment option:

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Buton

Quick Facts Summary

Buton is a specialized compounded pharmacological preparation containing the two active ingredients Papaverine and Atropine Sulfate. It is supplied in the form of a sterile solution for injection. Its primary pharmacological class is a vasoactive smooth muscle relaxant mixture, and its origin is classified as semi-synthetic.

What Type of Medicine is Buton?

Buton is defined as a specialized compounded pharmacological preparation and a combination product that integrates two active ingredients with complementary actions. This precise pairing is what provides its differentiation, placing it in the pharmacological class of vasoactive smooth muscle relaxant mixtures. The preparation specifically combines an anticholinergic agent with a non-selective phosphodiesterase inhibitor. This dual-action classification is clinically recognized for its ability to influence both neural and muscular control over localized circulation, distinguishing it from single-agent formulations.

Active Ingredients and Dosage Form

The two essential active ingredients are Papaverine and Atropine Sulfate. Papaverine acts as the primary smooth muscle relaxant, while Atropine Sulfate is officially classified by the FDA as a Cholinergic Muscarinic Antagonist, inhibiting parasympathetic nerve stimulation. Buton is formulated as a sterile solution intended for injection and is generally prepared as a compounded injectable preparation within an aqueous vehicle. The administration route via injection is crucial to its therapeutic identity, allowing for rapid, localized delivery to achieve precise tissue concentration. Pharmacological studies confirm that the rapid onset of action is a recognized characteristic of the injectable formulation of these vasoactive agents.

General Purpose and Synergistic Action

The general purpose of Buton is to promote comprehensive smooth muscle relaxation and significantly enhance localized blood flow within the targeted tissue. This benefit is achieved through powerful drug synergy, where Papaverine directly relaxes vascular walls while Atropine Sulfate simultaneously acts to neutralize nerve signals that cause involuntary spasm or narrowing. The combined mechanism helps to provide a robust physiological environment for overcoming conditions related to insufficient circulation.

What side effects are possible with Buton?

Possible Side Effects and Safety Information

The profile of possible side effects for this compounded pharmacological preparation is defined by the safety characteristics documented for its two active components, Papaverine and Atropine Sulfate. Regulatory authorities organize these effects by the physiological system affected.

Adverse effects associated with the cardiovascular system are documented and may include events such as tachycardia (increased heart rate), flushing, and hypotension (low blood pressure). More serious cardiovascular reactions documented for the components include various types of arrhythmias.

Safety data relating to the nervous system encompass effects such as dizziness, headache, and sedation. The anticholinergic component, Atropine, is associated with a risk of confusion, excitement, and blurred vision. Gastrointestinal effects typically manifest as signs of reduced motility, including dry mouth and constipation, which may lead to urinary retention in the urogenital system.

Specific regulatory safety constraints exist for certain pre-existing conditions and populations. Safety constraints prohibit use in individuals with known hypersensitivity to the ingredients, severe mechanical obstructions of the gastrointestinal or urinary tract, or certain cardiac conduction abnormalities like complete atrioventricular (AV) block. Older adults may exhibit increased sensitivity to anticholinergic effects, potentially increasing the risk of confusion or urinary retention. Furthermore, caution is noted for individuals with hepatic impairment due to the risk of liver toxicity, which includes the documented occurrence of jaundice with the Papaverine component.

Overdose and Emergency Response

Overdose and When to Seek Help

Based on authoritative regulatory documents for the drug containing buprenorphine (sold under brand names like BUTRANS), overdose is classified as a life-threatening or fatal risk, with the potential for serious harm. The primary dangers are associated with respiratory and central nervous system (CNS) depression.

Overdose Presentations and Scope

Category Official Regulatory Overdose Information
Documented Manifestations Symptoms include profound sedation, somnolence, coma, skeletal muscle flaccidity, cold and clammy skin, miosis (pinpoint pupils), and severe respiratory depression (slowed or shallow breathing).
Population-Specific Note Accidental exposure, particularly in children, can result in a fatal overdose of buprenorphine and requires immediate attention.
Dose/Exposure Factors Risk is increased significantly by misuse or abuse (e.g., chewing the transdermal system) and by concomitant use with benzodiazepines or other CNS depressants (including alcohol).

Emergency Response and Management

Immediate medical help or calling emergency services is required for any signs of profound sedation or breathing difficulties.

Treatment consists of the re-establishment of a patent airway, provision of assisted or controlled ventilation if necessary, and the administration of a specific opioid antagonist, such as naloxone. Due to the drug’s extended-release nature, prolonged monitoring and supportive care may be necessary even after initial treatment.

Therapeutic Uses of Buton

The compounded pharmacological preparation Buton is commonly used to help with symptoms that create noticeable physiological strain by supporting symptomatic relief in conditions presenting with localized discomfort. Its primary components are relevant for addressing symptoms related to circulation problems and are relevant for easing symptoms associated with erectile dysfunction.


Specialized Support and Symptomatic Relief

Buton is applied across domains where additional symptomatic support is needed, specifically targeting symptoms related to heightened physiological activity such as involuntary spasm and associated pain. The preparation is relevant for managing acute visceral colics (e.g., renal or biliary), severe Erectile Dysfunction (ED) of a vascular origin, and symptoms of poor localized circulation caused by arterial spasm. The application is used to help address these challenging symptoms.

“This supportive approach helps maintain a sense of stability when symptoms are more noticeable, assisting with functional comfort.”

This supportive approach contributes to easing the overall symptom load associated with these conditions. For instance, in severe ED, this application may assist with supporting the patient's functional ability where other primary symptomatic support is needed. It is also applied in clinical settings that involve acute or disruptive symptom patterns, offering supportive relief when symptoms become temporarily overwhelming.


Quick Fact: Relief for Acute Spasm and Vascular Impairment

Buton is relevant for easing symptoms that cluster into patterns requiring supportive management across two main areas: symptoms related to severe cramping pain and functional compromise related to localized circulatory symptoms.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Buton (buprenorphine transdermal system) is a prescription medicine with specific eligibility rules established by regulatory documents to ensure safe use, primarily for the management of severe, persistent pain.

Contraindications (Must Not Use)

Use of Buton is strictly contraindicated in patients with:

  • Significant respiratory depression.
  • Acute or severe bronchial asthma in an unmonitored setting or without access to resuscitative equipment.
  • Known or suspected gastrointestinal obstruction, including paralytic ileus.
  • Hypersensitivity (e.g., anaphylaxis) to buprenorphine.

Eligibility and Restrictions

Population Group Eligibility Status
Opioid-Naïve Patients Allowed (Only initiation on the lowest strength, 5 mcg/hour, is permitted.)
Opioid-Experienced Patients Allowed (May be initiated on higher doses: 7.5, 10, 15, or 20 mcg/hour.)
Pediatric Population Use Not Established (Safety and efficacy have not been established.)
Pregnancy Not Recommended (Prolonged use carries a risk of Neonatal Opioid Withdrawal Syndrome.)
Severe Hepatic Impairment Restricted (An alternate analgesic with flexible dosing should be considered.)
Geriatric Patients Special Consideration (Start with the lowest dose due to a greater frequency of decreased organ function; monitor closely.)
Long QT Syndrome Avoid Use (Avoid use in patients with this condition or a family history, or those taking Class IA or Class III antiarrhythmic drugs.)

This medicine is reserved for patients for whom alternative treatments are inadequate. Its use requires careful risk assessment for addiction, abuse, and misuse.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile of Buton, which is a compounded preparation of Papaverine and Atropine Sulfate, is documented by regulatory authorities based on formal pharmacodynamic effects and physical preparation constraints.

Formal Restrictions and Drug Interactions

  • Prohibited Combinations: The co-administration of Atropine Sulfate with Monoamine Oxidase Inhibitors (MAOI) is officially a use restriction and generally not recommended due to the potential risk of a hypertensive crisis.
  • Pharmacodynamic Potentiation: Concurrent use with potent CNS depressants (e.g., barbiturates) is documented to result in enhanced sedation.
  • Antagonism: Papaverine may antagonize the therapeutic effects of preparations containing Levodopa.
  • Exposure: Atropine is noted to decrease the rate of absorption of Mexiletine.

Administration Requirements and Susceptible Populations

  • Physical Incompatibility: A critical constraint exists for the injectable formulation: Papaverine Hydrochloride must not be added to Lactated Ringer’s Injection, as this combination results in physical precipitation.
  • Alcohol: Instances of hepatic enzyme and bilirubin elevations have been reported when Papaverine is used concurrently with alcohol consumption.
  • Population Note: Specific patient populations, including individuals with Down syndrome, spastic paralysis, or brain damage, are documented to have increased susceptibility to central nervous system disturbances from the systemic effects of Atropine Sulfate.

Mechanism of Action

️ How Buton Works: Mechanism of Action

Buton acts through a synergistic dual mechanism to achieve smooth muscle relaxation and vasodilation through specific biological and molecular actions.

Direct Musculotropic Relaxation via Enzyme Inhibition

The Papaverine component exerts a musculotropic (muscle-acting) mechanism by inhibiting the Phosphodiesterase (PDE) enzyme family, which normally breaks down the cellular messengers cAMP and cGMP. Inhibition of PDE causes these cyclic nucleotides to accumulate within the smooth muscle cells, triggering a cascading biochemical sequence that reduces the concentration of intracellular calcium necessary for contraction. This internal modulation of the muscle cell's biochemistry directly results in the reduction of tension and the subsequent change in vessel diameter (vasodilation).

Neurogenic Blockade of Cholinergic Spasm

The Atropine Sulfate component provides a complementary neurogenic blockade. It functions as a competitive antagonist at Muscarinic Acetylcholine Receptors ( mAChRs), particularly the M3 subtype. This interaction effectively blocks the binding of the excitatory neurotransmitter Acetylcholine from the parasympathetic nervous system, thereby neutralizing the nerve-driven stimulus that triggers involuntary contraction. This mechanism is essential for neutralizing nerve-driven muscle tension.

Synergistic Physiological Effect

The drug acts through the coordination of these two independent pathways. Papaverine relaxes the muscle from the inside by altering its core chemistry, while Atropine inhibits the external nerve signal that initiates contraction. This combined action facilitates the release of tension in the vessel wall, which produces the physiological effect of localized blood flow adjustment due to lowered vascular resistance.

Dosage and Administration Information

Buton is a specialized compounded sterile solution intended for parenteral use in a clinical setting. The official administration routes for its active components, Papaverine and Atropine Sulfate, include intravenous (IV), intramuscular (IM), and subcutaneous (SC) injection, facilitating localized delivery as a smooth muscle relaxant.

Administration adheres to standardized dose ranges. The Papaverine component is officially dosed in a range of 30 mg to 120 mg per single administration, while the Atropine component is typically administered in doses between 0.4 mg and 1 mg, consistent with its antispasmodic application.

Use of the injection is primarily scheduled for acute necessity and is not intended for long-term regimens. When necessary, doses may be repeated at specified intervals, generally ranging from three to six hours, according to clinical evaluation.

Specific procedural conditions must be observed. The solution requires visual inspection before use, and if the Papaverine component is administered intravenously, the injection must be delivered slowly over a period of one to two minutes. Furthermore, the Papaverine component is officially noted to be incompatible with, and must not be mixed with, Lactated Ringer’s Injection.

Specific dosing caution is advised for certain populations. Administration in older adults typically begins at the low end of the established dose range to accommodate patient status. The prepared containers are intended for single-use only.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Buton


Evidence for Use in Severe Erectile Dysfunction (ED)

Research has primarily evaluated compounded preparations containing the components of Buton in cohorts with conditions marked by functional limitations, such as severe Erectile Dysfunction, including those where symptoms remained noticeable following oral medication. Study designs have largely focused on observational settings and case series, which were used in research exploring how symptoms change over time following administration. Research was conducted exploring the application of the combination in these cohorts.

The findings contribute to understanding symptom patterns where researchers monitored physical response and collected patient-reported outcomes describing perceived discomfort and satisfaction with functional ability. Research describes patterns related to short-term physiological response, which was observed in the studied populations within minutes of administration. However, most available evaluations involve complex multi-agent mixtures containing additional active ingredients beyond Papaverine and Atropine.

Evidence for Use in Acute Visceral Colic

The components of Buton were studied for conditions involving episodic or acute changes, such as acute pain from renal or biliary colic. Clinical research for this purpose generally focuses on the Papaverine component, often within short-term randomized trials where it was evaluated in combination with standard pain relievers. Studies monitored outcomes related to physical discomfort, primarily measuring how symptom intensity changed over defined time intervals, typically within the first hour. Research also explored the study endpoint related to requirements for additional relief measures.


What is Still Uncertain About Buton Research

A primary research limitation is that comparative evidence is lacking for the specific dual-agent formulation of Papaverine and Atropine against placebo or single-agent therapies. The body of evidence is frequently derived from the study of multi-drug mixtures, which creates ambiguity regarding the specific contribution of the two components in Buton. Furthermore, data for certain groups remain insufficient, particularly concerning the long-term maintenance of the observed patterns.

Key Studies & References

  1. Clinical Efficacy of Intravenous Papaverine plus Ketorolac in the Emergency Treatment of Renal Colic: A Randomized, Double-blind Clinical Trial
  2. Role of papaverine hydrochloride administration in patients with intractable renal colic: randomized prospective trial

Frequently Asked Questions (FAQ)

Common questions about Buton (FAQ)


Q: How quickly can someone expect to notice the effects of Buton?

A: According to official pharmacological studies, this injectable formulation is recognized for its generally rapid onset of action. The official product information indicates that the onset of action is generally rapid, which is a recognized characteristic of the injectable route for these vasoactive agents.


Q: What kind of studies have been done to look at Buton's long-term effects?

A: Official studies have primarily focused on short-term physiological responses and patient-reported outcomes for acute conditions. The available research is used to understand immediate changes after administration. Official documentation notes that data remains insufficient regarding the long-term maintenance of observed effects.


Q: Are there any age limits for who can use Buton?

A: Regulatory documents address use in different age groups. Official documents state that for older adults, caution should be observed, typically by considering the lower end of the established dose range. However, the safety and efficacy of this specific compound have not been established for the pediatric population.


Q: Can I use Buton if I have liver or kidney problems?

A: Official warnings advise caution for individuals with hepatic impairment (liver problems). This is due to a documented risk of liver toxicity, which includes the occurrence of jaundice with one of the active components. Official warnings for this specific compound primarily address hepatic impairment; specific precautions for kidney function are generally not detailed in the same regulatory section.


Q: Are there any common lifestyle factors that might affect how Buton works?

A: Official product information specifically notes a potential issue with alcohol. Instances of elevated hepatic enzymes and bilirubin levels have been reported when the Papaverine component is used concurrently with alcohol consumption. Other lifestyle factors are not generally listed in the official interaction documents.


Q: Are allergic reactions to Buton common?

A: Official documents state that known hypersensitivity to the ingredients is a strict contraindication. Official documentation lists known hypersensitivity as a strict contraindication, meaning use is not permitted for individuals with such an allergy. Official labels typically do not specify the frequency or commonality (e.g., a percentage) of allergic reactions.


Q: Can Buton be taken by women who are pregnant or breastfeeding?

A: Official documents contain specific guidance for pregnancy and breastfeeding. For the Atropine component, use during pregnancy is generally not recommended unless the potential benefit justifies the risk to the fetus. Information regarding the medicine’s safety during breastfeeding is addressed within the official product documentation.


Q: How is Buton different from a placebo in clinical trials?

A: Official research highlights a primary limitation in the evidence base for this specific compound. The studies note a lack of comparative evidence for the dual-agent formulation of Papaverine and Atropine when compared directly against a placebo or single-agent therapies.


Q: Are there different forms or strengths of Buton available?

A: Buton is officially supplied as a sterile solution intended for injection. The product information states it is supplied as a sterile solution for injection. Official regulatory documents establish specific dose ranges for its two active ingredients.


Q: Is Buton recommended for children?

A: Official regulatory documents state that safety and efficacy for the pediatric population have not been established for this Papaverine/Atropine compound. There is no official recommendation for use in children.


Q: Does Buton treat the underlying condition or just the symptoms?

A: The drug's action is described physiologically in official documents. Its purpose is to promote comprehensive smooth muscle relaxation and influencing localized blood flow within the targeted tissue. It is officially indicated for conditions involving episodic or acute changes and functional limitations.


Q: If I miss a dose of Buton, what general guidance is usually given?

A: Because this medicine is typically administered in a clinical setting for acute necessity, the concept of a missed dose by the patient is generally not applicable. The administration schedule is based on specific intervals, such as three to six hours, when necessary.


Q: Is Buton addictive or habit-forming?

A: Official regulatory texts do not document a known abuse or dependence risk for the Papaverine/Atropine compound. Furthermore, it is not classified as a scheduled substance by regulatory bodies.


Q: Does Buton interact with common pain relievers like Tylenol or Advil?

A: The official interaction profile lists specific drug classes but does not typically provide explicit guidance on common non-prescription pain relievers such as acetaminophen or ibuprofen. The profile includes warnings about central nervous system depressants and antagonism with Levodopa.


Q: Can Buton affect laboratory test results?

A: The official label notes the potential for the Papaverine component to affect liver-related test results. Specifically, the documented occurrence of elevated hepatic enzyme and bilirubin levels is noted in the official product information.


Q: How long does Buton usually stay active in the body?

A: Regulatory documents contain the pharmacological half-life information for the active ingredients. This technical data helps define the rate at which the active substance is expected to be eliminated from the body.


Q: Is Buton safe to use if I have high blood pressure?

A: Official documents note the risk of effects like hypotension (low blood pressure) and certain arrhythmias. However, pre-existing high blood pressure (hypertension) is not typically listed as a direct contraindication in the official product documentation.


Q: Is Buton a controlled substance?

A: The Papaverine/Atropine compound is not classified as a controlled substance by major regulatory bodies. Classification as a controlled substance indicates potential for abuse, which is not attributed to this compound.


Q: Does Buton need to be taken at a specific time of day?

A: The administration is primarily stated for acute necessity, not a fixed daily schedule. Doses may be repeated at specified intervals, such as three to six hours, as indicated in the product information, meaning there is no fixed time-of-day requirement.


Q: Is there a generic version of Buton available?

A: The two active ingredients, Papaverine and Atropine, are widely available as generic compounded preparations. The official regulatory listing for the specific brand name (Buton) would contain information on whether an FDA or EMA-approved generic equivalent exists.


Q: Is Buton known to cause weight gain or loss?

A: According to official documentation, weight gain or loss is not typically listed among the documented common or severe adverse effects for the Papaverine/Atropine compound.


Q: Does Buton interact with birth control pills?

A: The official interaction documentation does not typically list interactions between the components of Buton and hormonal contraceptives, such as birth control pills.


Q: What official safety classifications does Buton have?

A: Official classifications define the components by their pharmacological action. The preparation is classified as a vasoactive smooth muscle relaxant mixture, combining a Cholinergic Muscarinic Antagonist with a PDE Inhibitor. It may also have regulatory classifications related to use during pregnancy (e.g., Pregnancy Category C).


Q: Is there a risk of withdrawal symptoms if Buton is stopped suddenly?

A: Since the compound is not documented as habit-forming or a scheduled substance, official regulatory texts do not typically describe withdrawal symptoms that may occur upon cessation of the medicine.


Q: Does Buton require any special monitoring while I'm using it?

A: Regulatory documents indicate that the solution requires visual inspection prior to use to check for particulate matter or discoloration. Additionally, monitoring for certain effects, such as in individuals with hepatic impairment (liver problems), is generally advised based on warnings and precautions.


Q: What does official guidance say about using Buton if I have a chronic illness?

A: Official guidance addresses specific chronic conditions through contraindications and precautions. These include severe mechanical obstructions of the gastrointestinal or urinary tract, certain cardiac conduction abnormalities, and hepatic (liver) impairment.


Q: Is it necessary to have certain tests done before starting Buton?

A: The warnings section in official product information points to potential risk factors that may necessitate pre-screening. These include checking for contraindicated conditions, such as cardiac conduction abnormalities or assessing hepatic function in susceptible patients.


Q: Does Buton affect fertility?

A: Official regulatory documents do not typically include data regarding the effect of the Papaverine/Atropine compound on human fertility.


Q: What percentage of people experience the more severe side effects listed for Buton?

A: Official labels list adverse effects but do not generally provide specific incidence rates or percentages for the occurrence of the compound's side effects in the general population.

How should Buton be stored and disposed of?

Storage and Disposal Requirements

Buton (Papaverine and Atropine Sulfate injection) must be stored and handled according to the following official requirements to maintain its integrity as a sterile solution:


Official Storage Conditions

  • Temperature: Store at controlled room temperature, typically 20 to 25 C (68 to 77 F).
  • Protection: The solution must be protected from light and kept from freezing or exposure to excessive heat and moisture.
  • Container: The medicine should be kept in a tightly closed container and visually inspected before use; do not use if discoloration or particulate matter is present.

Safety and Disposal

All medicine must be stored out of the reach of children. Unused or expired Buton should be disposed of using an official drug take-back program. Any used needles and sharps must be placed immediately into an approved, designated sharps disposal container.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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