Buto Asma

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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 Buto Asma

Quick Facts: Buto Asma

Property Description
Active ingredient Salbutamol (Albuterol)
Form Metered-dose inhaler (MDI), Oral solution, Tablets
Pharmacological class beta2-adrenergic agonist / Bronchodilator
Primary purpose Rescue medication for rapid symptom relief
Origin Synthetic substance

Buto Asma is a single-ingredient, synthetic, prescription-only medicinal product whose active substance is Salbutamol (also known as Albuterol). It is defined by its pharmacological classification and rapid physiological effect, serving as a primary short-term intervention for acute constriction of the airways.

What Type of Medication Is Buto Asma?

Buto Asma belongs to the high-level pharmacological class of beta2-adrenergic agonists, or more specifically, bronchodilators. This classification is consistently applied across major pharmacopoeia. The product is manufactured with the synthetic entity Salbutamol, ensuring reliable and standardized therapeutic performance.

The product is most commonly utilized in the form of a metered-dose inhaler (MDI), which delivers the medication via pressurized inhalation. This profile defines it as a short-acting beta2-agonist (SABA), differentiating it from long-acting formulations used for continuous maintenance therapy, and marking it specifically for acute, intermittent relief.

The Role of Buto Asma as a Short-Acting Bronchodilator

The fundamental therapeutic role of Buto Asma is to provide rapid relief from episodes of acute airway tightening, such as those experienced during a sudden exacerbation of a reversible obstructive airway condition. It is utilized as a rescue medication intended for the prompt reversal of sudden bronchospasm.

The mechanism by which Salbutamol achieves this effect is through the targeted stimulation of specific beta2-receptors in the smooth muscle of the airways. This action induces smooth muscle relaxation and subsequent bronchodilation, thereby widening the air passages. Salbutamol formulations reduce resistance to airflow, providing symptomatic aid when restricted airflow occurs.

Regulatory References

  1. WHO Essential Medicines List: Salbutamol
  2. MedlinePlus: Albuterol Oral Inhalation

What side effects are possible with Buto Asma?

Possible Side Effects and Safety Information

The safety profile of Buto Asma, whose active ingredient is Salbutamol, is defined by adverse reactions classified by frequency and grouped into System-Organ Classes (SOCs), as documented in official regulatory labeling. These effects are often linked to its pharmacological action as a beta2-adrenergic agonist, predominantly involving the nervous and cardiovascular systems.


Officially Classified Adverse Reactions

Adverse effects are categorized based on their reported frequency in regulatory documentation:

Classification Examples of Reactions
Very Common Tremor
Common Headache, Palpitations, Tachycardia (increased heart rate)
Rare Hypokalemia (low potassium), Cardiac Arrhythmias, Peripheral Vasodilation
Frequency Not Known Paradoxical bronchospasm, Myocardial Ischaemia, Lactic acidosis

Serious Adverse Reactions and Safety Cautions

The regulatory labeling explicitly identifies certain events as clinically important and potentially serious. These include paradoxical bronchospasm—a sudden, life-threatening worsening of breathing that can occur immediately after use—and rare but serious hypersensitivity reactions (e.g., angioedema, hypotension, collapse). The occurrence of cardiac arrhythmias is also documented.

Official safety cautions require specific observation for certain patient populations. Caution is advised for individuals with pre-existing cardiovascular conditions (such as hypertension or coronary insufficiency), convulsive disorders, hyperthyroidism (thyrotoxicosis), or diabetes mellitus. Systemic effects like tremor and tachycardia are noted as often being transient. An increasing requirement for the product may officially indicate a deterioration of the underlying respiratory condition.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information describes overdose of Buto Asma (Salbutamol/Albuterol) as primarily resulting in signs of excessive beta-adrenergic stimulation. Suspected overdose is considered an emergency situation that requires immediate medical attention.


Documented Overdose Manifestations

The most commonly documented manifestations are tachycardia (fast heart rate), tremor, palpitations, headache, nervousness, and hyperactivity. Nausea and vomiting are also reported, particularly following oral overdose.

Serious Outcomes and Required Actions

Classification Manifestations and Actions
Serious Outcomes Documented complications include severe metabolic changes such as hypokalemia (low serum potassium), hyperglycemia, and lactic acidosis. Potentially life-threatening cardiac events, including cardiac arrhythmias and myocardial ischaemia, have been associated with excessive use.
Emergency Action Regulatory guidance mandates that patients or caregivers seek emergency medical attention immediately or call the Poison Help line if an overdose is suspected. Fatalities have been reported with excessive use.

Supportive Management and Monitoring

Since no specific antidote is known, management is centered on symptomatic and supportive treatment. Due to documented risks, continuous monitoring of vital signs and electrolyte levels is required. This specifically includes monitoring of serum potassium and blood glucose levels to manage potential derangements. The use of certain counteragents, such as cardioselective beta-blockers, must be approached with extreme caution due to the risk of inducing severe bronchospasm.

Therapeutic Uses of Buto Asma

What Buto Asma Treats: Main Uses and Benefits

This medication is commonly used to provide supportive symptomatic relief for acute respiratory distress, especially symptoms associated with acute airway narrowing, such as wheezing and chest tightness. It helps address symptom clusters that may become intense or disruptive, including shortness of breath. This offers symptomatic relief that helps patients cope more steadily with difficult episodes and contributes to improved day-to-day comfort.

It is relevant in conditions characterized by periods of heightened symptoms, such as bronchial asthma and other conditions involving reversible airway obstruction. The medication is also applied across domains where short-term symptom management is appropriate, serving to prevent symptoms that may be triggered by physical activity or unavoidable exposure to known environmental allergens. This strategy assists with maintaining functional stability, allowing patients to cope more steadily with symptom fluctuations.

“This supportive relief may assist with maintaining a sense of stability when symptoms are more noticeable.”


Quick Fact: Relief for Acute Airway Narrowing

Buto Asma is commonly used for managing symptoms linked to acute airway narrowing.


Eligibility and Restrictions for Use

Official Eligibility Rules for Buto Asma (Salbutamol)

This section details the formal population eligibility and restrictions for Buto Asma as specified in government regulatory documents like FDA Prescribing Information and EMA SmPC.

Category Regulatory Status
Populations for whom use is allowed Adults, adolescents, and children aged 4 years and older with reversible obstructive airway disease.
Populations for whom use is contraindicated Patients with a known hypersensitivity to Salbutamol or any component of the specific product formulation. Inhaled forms are contraindicated for the treatment of threatened abortion or premature labour.
Age-related eligibility rules Safety and effectiveness are not established for use in children younger than 4 years of age for the metered-dose inhaler.
Condition-specific eligibility rules Use requires caution and supervision in patients with certain conditions, including cardiovascular disorders (e.g., coronary insufficiency, hypertension), hyperthyroidism, diabetes mellitus, and convulsive disorders.
Pregnancy and lactation eligibility status Pregnancy: Conditional use—the official labeled status is that use is not recommended unless the benefit clearly outweighs potential risk. Lactation: Use is generally considered acceptable, but is advised with caution, as Salbutamol may pass into breast milk.

Connection to the Overall Eligibility Profile

The regulatory profile strictly defines who can and cannot use the medicine by establishing an absolute exclusion for hypersensitivity and a minimum age threshold. Furthermore, regulatory documents classify use as conditional for specific populations with pre-existing cardiovascular or metabolic conditions, requiring caution as part of the official labeled guidelines.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Buto Asma’s interaction profile is officially defined by its beta2-adrenergic agonist activity, resulting primarily in pharmacodynamic interactions documented in regulatory prescribing information.

Formally Restricted and Antagonistic Combinations

Co-administration with non-selective Beta-receptor blocking agents is officially restricted, as these medicines counteract the pulmonary effects of Buto Asma and carry the potential risk of severe bronchospasm. Similarly, concurrent use of other short-acting sympathomimetic aerosol bronchodilators is prohibited by regulatory guidance due to the documented risk of additive and deleterious cardiovascular effects.

Vascular Potentiation and Timing Rules

Regulatory labels advise administering Buto Asma with extreme caution to patients using Monoamine Oxidase Inhibitors (MAOIs) or Tricyclic Antidepressants (TCAs). This caution applies even if those agents were discontinued within the preceding two weeks, due to the potential for these combinations to potentiate Salbutamol’s action on the vascular system.

Metabolic and Exposure Interactions

Buto Asma may interact with medicines that affect serum electrolytes. Concomitant use with non–potassium-sparing diuretics, Xanthine derivatives, or Corticosteroids may worsen the risk of hypokalemia (low serum potassium) due to additive effects. Additionally, official documents report that co-administration may cause a decrease in serum Digoxin levels, which is classified as an exposure-modifying interaction. No formal restrictions are documented regarding interactions with food, alcohol, or specific herbal products.

Mechanism of Action

Buto Asma, containing salbutamol sulfate, acts as a selective beta2-adrenergic receptor agonist. The primary biological target is the beta2-adrenoceptor, a G-protein coupled receptor (GPCR) predominantly located on airway smooth muscle cells.

Upon binding to this receptor, the drug initiates an intracellular signaling cascade. This activation is coupled to the stimulatory G-protein (Gs), leading to the activation of the enzyme adenylate cyclase. Adenylate cyclase catalyzes the conversion of adenosine triphosphate (ATP) to cyclic adenosine monophosphate (cAMP), significantly increasing the intracellular concentration of this second messenger.

The elevated cAMP levels subsequently activate Protein Kinase A (PKA). PKA phosphorylation of target proteins reduces the intracellular concentration of ionic calcium (Ca^2+). This reduction in free intracellular calcium inhibits the phosphorylation of myosin, which is required for smooth muscle contraction. The resulting molecular consequence is the relaxation of the bronchial smooth muscle fibers. System-level physiological modulation involves a decrease in airway resistance due to the widening of the pulmonary conducting passages, affecting airflow dynamics.

Dosage and Administration Information

Buto Asma is primarily administered via Oral Inhalation using a metered-dose inhaler, although certain formulations also permit Oral ingestion via tablets or solution. The standard inhaled dose for acute symptom relief consists of two inhalations (180 mcg albuterol base), which may be repeated as needed with a required minimum interval of 4 to 6 hours between administrations. Total inhaled administration must not exceed 12 total inhalations in any 24-hour period. For scheduled use of the oral tablets, the medicine is typically administered three or four times daily, with the maximum labeled dose for adults not exceeding 32 mg per day.

The official administration protocol requires the metered-dose inhaler to be primed with a specific number of test sprays before its first use or following a prolonged period of disuse to ensure accurate dose delivery. Oral tablets and solutions can be administered with or without food, but immediate-release tablets must be swallowed whole and should not be crushed. The inhaled regimen is approved for use in children aged 4 years and older at the same two-inhalation dose as adults, while initial oral dosing for older or sensitive patients must begin at the lowest available strength. Procedurally, the need for increased administration frequency is a key indicator that the patient's underlying respiratory control is worsening. The device must be discarded when the dose counter reaches zero.

Recent Clinical Evidence

Buto Asma: Recent Clinical Evidence

Overview of combination therapy research

Research has explored whether the quality of life for patients may be affected when using the compound/drug combination. Studies evaluated use of this combination in several patient cohorts, primarily focusing on chronic disease management. The timing and nature of any changes associated with the combination were analyzed across different trial durations. Findings generally examined potential changes in the severity of reported symptoms.


Pharmacological investigation

Research involving this compound has investigated the underlying biological pathways. The combination involves two distinct pharmacological agents, with studies investigating the outcome when combining the two therapies compared to using each one individually. The effects of the combination on biomarkers were an area of research interest.


Clinical trials and comparative studies

A key area of investigation focused on the outcomes of the combination versus monotherapy. Studies compared findings when using the combination versus monotherapy across several outcome measures, including symptom management and objective health markers.

  • Symptom Change: Research evaluated whether this compound was associated with a change in symptoms over time in the studied population.
  • Adverse Events: Trial protocols described the methods used for collecting data on adverse events in adult populations. Reports cataloged the frequency and type of adverse events observed during the trials. Trial reports documented the specific patient characteristics and inclusion/exclusion criteria for participants.
  • Long-term follow-up: Some studies included extended follow-up periods to track patient status after the active treatment phase concluded. These exploratory studies tracked how outcomes may have evolved beyond the trial's primary endpoint.

Key Studies & References

  1. Albuterol-Budesonide Pressurized Metered Dose Inhaler in Patients With Mild-to-Moderate Asthma: Results of the DENALI Double-Blind Randomized Controlled Trial
  2. BUTO-ASMA 0,1 mg/dose pressurised inhalation, suspension (Salbutamol) - Patient Information Leaflet / Summary of Product Characteristics (SmPC)

Frequently Asked Questions (FAQ)

Common questions about Buto Asma (FAQ)

Q: What is Buto Asma?

A: Buto Asma is the brand name of a prescription medication containing the active ingredient salbutamol sulfate, which is a type of short-acting beta-agonist (SABA). It is administered via an inhaler.


Q: What is Buto Asma used for?

A: Buto Asma is indicated for the short-term relief and prevention of bronchospasm in people aged 4 years and older with reversible obstructive airway disease, such as asthma. It is intended to help open the airways during an asthma attack or episode of difficulty breathing.


Q: How does Buto Asma work in the body?

A: Buto Asma contains an active ingredient that acts on specific receptors in the smooth muscle of the airways. This action supports the relaxation of the muscles surrounding the bronchial tubes, which may temporarily widen the airways and ease breathing during an acute episode.


Q: Can Buto Asma be used as a primary treatment for asthma?

A: Generally, Buto Asma is considered a rescue inhaler. It is used as needed to address sudden or acute symptoms like wheezing, shortness of breath, or chest tightness. It is typically not intended to replace daily maintenance or controller medications used to manage chronic asthma inflammation.


Q: What are common side effects associated with Buto Asma?

A: As with any medication, use of Buto Asma may be associated with side effects. Commonly reported effects have included nervousness or tremor, headache, and a fast or pounding heartbeat. If you experience chest pain, worsening asthma symptoms, or severe allergic reactions, seek emergency medical attention.

How should Buto Asma be stored and disposed of?

Storage Requirements

Buto Asma (Salbutamol MDI) must be stored in specific environmental conditions defined by the regulatory labeling. The product must not be stored above 30 C and must not be frozen. It is mandatory to protect the product from direct sunlight and heat. The pressurized container must be protected from overheating and physical impact, and should be stored with the cap on to prevent dust and dirt contamination. All medicine must be kept out of the sight and reach of children and not used after the expiry date.

Disposal Instructions

Regulatory instructions for disposal are strict due to the pressurized nature of the canister. The container must not be pierced, broken, burned, or destroyed by fire, even when empty. Medicines must not be thrown away via waste water or common household trash. Unused or expired product must be disposed of by asking the pharmacist how to safely throw away medicines, as these measures help protect the environment.

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

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