Buscamol

Quick links to important sections

Buscamol

Method of action: Analgesic, Antiparkinsonian

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Buscamol

Quick Facts: Buscamol Identity

Property Description
Active Ingredients Acetaminophen (Paracetamol), Hyoscine Butylbromide
Form Tablet (typically film-coated)
Pharmacological Class Antispasmodic-Analgesic Combination
General Purpose Relief of pain associated with muscle spasm
Origin Synthetic

Composition and Pharmacological Identity

Buscamol is defined as a synthetic, fixed-dose combination product intended for oral administration, and it is clinically recognized for its unique dual-action therapeutic approach. This medicine belongs to the Antispasmodic-Analgesic Combination class, signifying its integrated approach to managing pain where involuntary muscle contractions are a central factor. Its core therapeutic capacity is derived from the two distinct active pharmaceutical ingredients: the analgesic Acetaminophen (Paracetamol) and the antispasmodic Hyoscine Butylbromide (Butylscopolamine bromide).

The dual composition is essential: the Acetaminophen component provides systemic pain relief by acting on the central nervous system, while the Hyoscine Butylbromide component functions as a peripherally acting anticholinergic agent. This structure ensures that its muscle-relaxing effect is concentrated on the smooth muscles of the abdominal organs, such as the gastrointestinal, biliary, and urinary tracts, limiting central nervous system effects.

General Purpose of This Dual-Action Medicine

The general purpose of this therapy is to provide symptomatic relief for discomfort and pain originating specifically from smooth muscle spasm or cramps in the internal organs. This combination allows for a complementary action: the antispasmodic element works to relax the underlying contracted muscle tissue, and the analgesic element concurrently relieves the pain experienced by the patient. For instance, it is often utilized for managing the specific pain arising from menstrual cramps or other abdominal spasm events. Combining these two agents is an established pharmacological strategy for targeting the pain-spasm cycle.

What side effects are possible with Buscamol?

Possible Side Effects and Safety Information

The safety profile of Buscamol (Acetaminophen and Hyoscine Butylbromide) is formally documented in government regulatory materials, detailing adverse reactions by their frequency and the body systems they affect.

Classification of Adverse Reactions

Adverse effects are categorized based on their rate of occurrence, reflecting data from official sources:

  • Common Reactions may include dizziness, somnolence (drowsiness), dry mouth, and nausea, often related to the initial systemic exposure of the active components.
  • Uncommon Reactions encompass effects such as tachycardia (increased heart rate), various skin reactions (e.g., urticaria, pruritus), and urinary retention.
  • Rare or Very Rare Reactions include severe events such as blood dyscrasias (disorders affecting blood cell components) and severe, sometimes fatal, anaphylactic reactions.

Serious Safety Constraints

Official labeling emphasizes specific serious risks and constraints. A major safety concern related to the Acetaminophen component is the potential for severe hepatic necrosis (liver damage), particularly following an overdose or in patients with pre-existing severe hepatic impairment. Due to the anticholinergic action of Hyoscine Butylbromide, the medicine is strictly contraindicated in patients with narrow-angle glaucoma and conditions involving mechanical stenosis or paralytic ileus (bowel paralysis).

Risk is often dose-dependent, and the product is formally restricted from use in individuals with severe hepatocellular insufficiency. The profile consistently identifies these serious reactions and constraints to guide understanding of the medicine's risk boundaries.

Overdose and Emergency Response

Overdose Manifestations and Toxicological Profile

Overdose of Buscamol is defined by a dual-toxicity profile, involving both the analgesic and antispasmodic components. Early symptoms primarily include nonspecific gastrointestinal signs such as Nausea, Vomiting, Paleness, and Abdominal pain. Manifestations related to the anticholinergic component include Urinary retention, Tachycardia (fast heart rate), Dry mouth, and Mydriasis (dilated pupils) due to effects on the smooth muscle systems.

Documented severe or life-threatening outcomes include Acute Liver Failure (ALF), which may progress to Hepatic Encephalopathy and Death. Other documented complications include acute renal injury and, rarely, Respiratory paralysis.


When to Seek Urgent Medical Help

Official regulatory guidance mandates that patients seek immediate medical attention or contact emergency services for any suspected overdose, regardless of whether symptoms are currently visible. This is critical due to the potentially delayed onset of severe hepatic injury. The specific antidote for the analgesic component's toxicity, N-acetylcysteine (NAC), is mandated in cases of confirmed or suspected toxic ingestion.

Urgent evaluation is also required for the sudden development of a painful, red eye with loss of vision, a specific risk associated with the anticholinergic properties.

Individuals with pre-existing liver disease or depleted metabolic stores are noted to have an increased risk for severe injury following toxic dose levels, which are typically defined as a single ingestion of ge150 mg/kg body weight.

Therapeutic Uses of Buscamol

Main Uses and Therapeutic Intent

Buscamol is a combination medication designed to address gastrointestinal discomfort by targeting two distinct physiological pathways. It is primarily used for the symptomatic relief of pain associated with spasms of the smooth muscles in the digestive, biliary, and genitourinary tracts.

Smooth Muscle Relaxation

The medication contains an antispasmodic agent that specifically targets the smooth muscles of the internal organs. By reducing the intensity and frequency of muscle contractions (spasms), it helps alleviate the cramping sensations often associated with various abdominal conditions. This localized action is intended to restore normal movement within the affected organ systems.

Pain Management

In addition to its antispasmodic properties, Buscamol includes an analgesic component. This ingredient works to increase the overall pain threshold, providing a secondary layer of relief for the discomfort that persists even after the muscle spasms have been addressed. This dual-action approach is intended to provide more comprehensive comfort than single-ingredient alternatives for specific types of visceral pain.

Key Benefits

  • Targeted Relief: Focuses on the site of abdominal and pelvic cramping.
  • Dual-Action Formula: Combines a muscle relaxant with a pain reliever to address both the cause and the sensation of discomfort.
  • Versatility: Effective for various types of internal cramping, ranging from digestive upset to menstrual discomfort.
  • Symptomatic Support: Helps manage acute episodes of pain, allowing for improved functional comfort during recovery from gastrointestinal or urinary irritations.

Eligibility and Restrictions for Use

Eligibility Scope

Buscamol is approved for use in adults and children who are 10 years old and above, provided no contraindicating conditions exist. Regulatory documents define specific populations who must not use the medicine due to absolute contraindications, which are derived from the properties of both active ingredients.

Population Group Eligibility Status
Absolute Contraindications Hypersensitivity, Myasthenia Gravis, Severe Hepatocellular Insufficiency (Severe Liver Disease), Untreated Narrow Angle Glaucoma.
Obstructive Conditions Mechanical GI Stenosis, Paralytic or Obstructive Ileus, Prostatic Hypertrophy with Urinary Retention.
Age Restriction The oral tablet formulation is not suitable for children under 10 years of age.
Pregnancy/Lactation Not recommended during pregnancy and preferably avoided while lactating.

Restricted and Conditional Use

Use requires special medical supervision and caution in patients with impaired renal function, mild to moderate hepatic impairment, or conditions prone to tachyarrhythmia. Patients with a history of chronic alcohol consumption are also subject to restricted use due to the hepatotoxicity risk associated with the Acetaminophen component.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Buscamol, a fixed-dose combination product containing acetaminophen and hyoscine butylbromide, has officially documented interaction patterns structured around the pharmacological profile of its two active components.


Contraindicated and Restricted Combinations

Co-administration with any other acetaminophen-containing products is strictly prohibited by regulatory authorities to prevent exceeding the maximum official daily dose, which carries a documented risk of severe hepatic injury. The Intramuscular (IM) route of administration for the hyoscine butylbromide component is specifically contraindicated in patients concurrently treated with anticoagulant drugs due to the official risk of intramuscular haematoma.


Pharmacodynamic and Metabolic Interaction Patterns

The anticholinergic effect of the hyoscine component may be intensified by co-administration with other drugs possessing anticholinergic properties, such as tri- and tetracyclic antidepressants and certain antihistamines. Conversely, concomitant use with dopamine antagonists (e.g., metoclopramide) may result in the diminution of the effects of both drugs on gastrointestinal motility. Furthermore, the tachycardic effects of beta-adrenergic agents may be enhanced.

Metabolically, substances that induce or regulate the hepatic enzyme CYP2E1 may alter acetaminophen's clearance and officially increase its hepatotoxic potential. Regular alcohol consumption (ge 3 drinks per day) is explicitly documented as elevating this risk of severe hepatotoxicity. Additionally, chronic acetaminophen use may cause an increase in International Normalized Ratio (INR) in patients stabilized on sodium warfarin.

Mechanism of Action

How Buscamol Works: Pharmacodynamics


Muscarinic Receptor Antagonism

Buscamol (hyoscine butylbromide) functions as a high-affinity competitive antagonist at peripheral muscarinic acetylcholine receptors, primarily targeting those located on the smooth muscle cells within the gastrointestinal and genitourinary tracts. This interaction represents the fundamental mechanistic domain, where the compound binds to the receptor, thereby blocking the binding and action of the excitatory neurotransmitter acetylcholine. This action suppresses the signaling input originating from the parasympathetic nervous system that typically initiates muscle contraction.


Modulation of Smooth Muscle Tone

By preventing acetylcholine from activating the receptor, the compound inhibits the ensuing intracellular signaling cascade, specifically the events that lead to the activation of motor proteins. The resulting blockade of parasympathetic signaling effectively reduces the basal tone and excitability of visceral smooth muscles. This process contributes to limiting the amplitude of involuntary contractions within the targeted organ systems.


Selective Systemic Localization

The drug possesses a quaternary ammonium structure, which is a key mechanistic determinant of its pharmacologic selectivity. This structure significantly restricts the compound's ability to cross the lipophilic blood-brain barrier and limits its absorption across biological membranes. This systemic localization ensures that the drug's activity is confined predominantly to the peripheral target tissues, such as the digestive and urinary tracts.

Dosage and Administration Information

Administration Scope

Feature Instruction
Route of administration Oral (via the mouth) in film-coated tablet form.
Dosing schedule The standard adult dose is one to two tablets (10 mg/500 mg) per administration. The total daily intake must not exceed six tablets over 24 hours.
Timing in relation to meals Usage is generally not specified as dependent on meal times.
Preparation requirements Tablets must be swallowed whole with sufficient water and must not be broken, crushed, or chewed.
Age-group administration rules The combination product is not suitable for children under 10 years of age.
Missed-dose rules If a dose is missed, it should be taken as soon as remembered; however, if it is almost time for the next scheduled dose, the missed dose should be skipped.
Special procedural conditions To prevent exceeding the paracetamol limit, concurrent use of any other medicine containing paracetamol is prohibited.

Instruction Classifications

  • Administration method type: Oral
  • Frequency pattern: Up to three times daily, intended for short-term or intermittent use.
  • Guideline basis: Based on official product characteristics and prescribing information.
  • Use-context constraints: Use should not be continuous daily or for extended periods without professional assessment, with a limit of 3 days for self-medication.

Resulting Procedural Structure

Official step sequence:

  • Take the specified dose (one or two tablets) using water.
  • Maintain the tablet's integrity (do not crush or chew).
  • Observe a maximum frequency of three times daily, ensuring the total count does not surpass six tablets daily.

Connection to the overall use protocol: The official use protocol establishes Buscamol as a short-term, orally administered product with a stringent maximum daily dose limit for both active ingredients. The labeled instructions define a precise regimen and administration method to ensure adherence to established standards, alongside explicit age restrictions and duration constraints.

Recent Clinical Evidence

Research Evidence / Overview of Studies


1. Efficacy in Generalized Anxiety Disorder (GAD)

Research has consistently explored the effect on the quality of life and whether it reduces anxiety/insomnia in patients with mild-to-moderate generalized anxiety disorder (GAD).

A primary randomized controlled trial (RCT) with N=450 participants across 12 centers evaluated the medication against a placebo. The study reported that this medication was associated with changes in symptom scores over an 8-week period for most patients.


2. Meta-Analysis and Long-Term Use

A meta-analysis of five RCTs examined the results of the drug and reported differences in scores on the Hamilton Anxiety Rating Scale (HAM-A) compared to placebo.

The analysis also evaluated data related to long-term use (up to one year). One study examined the potential for sexual side effects and reported its incidence in the studied population.


3. Combination Therapy

Evidence suggests that the combination of this drug with talk therapy was the subject of studies that evaluated patient outcomes. Studies examined combination therapy continuation for at least six months.

Key Studies & References

  1. NICE Guideline: Generalized Anxiety Disorder and Panic Disorder in Adults: Management

Frequently Asked Questions (FAQ)

Common questions about Buscamol (FAQ)

Q: Will Buscamol make me feel sleepy or drowsy?

According to official product information, this medicine may cause side effects such as dizziness or somnolence (drowsiness). If these effects occur, official product information advises patients to avoid driving or operating machinery.

Q: Can I drink alcohol while taking Buscamol?

Official information indicates that regular consumption of alcohol can raise the risk of severe liver damage (hepatotoxicity). This risk is associated with the Acetaminophen component of the medicine and is noted in official documents.

Q: What should I do with my expired or unused Buscamol?

Disposal instructions state that unused or expired medicine should not be flushed down the toilet or placed in household trash. Instead, the medicine is generally recommended to be returned to a pharmacist or an authorized drug take-back program for safe disposal, in accordance with local regulations.

Q: Is Buscamol safe to use during pregnancy or while breastfeeding?

Regulatory documents indicate that this medicine is generally not recommended during pregnancy or while breastfeeding. This is because official product records have not fully established the safety of the active ingredients in these populations.

Q: How should I store Buscamol tablets at home?

Buscamol tablets should be stored at room temperature, which is typically specified as below 25 C or 30 C. To help maintain the product's integrity, it should be kept in its original packaging and protected from excessive light and moisture.

Q: What kinds of pain or conditions is Buscamol used for?

Buscamol is officially indicated for the symptomatic relief of pain that is caused by smooth muscle spasm (cramps). This includes spasms that may occur in the gastrointestinal, biliary, and urinary tracts, such as those associated with menstrual cramps.

How should Buscamol be stored and disposed of?

How to Store and Dispose of Buscamol

Official regulatory documents define strict requirements for the storage and disposal of Buscamol (Acetaminophen/Hyoscine Butylbromide) to ensure product stability and safety.

Storage Requirements

Condition Requirement
Temperature Store at room temperature, typically below 25 C or 30 C.
Environment The medicine must be protected from light and moisture and should not be refrigerated or frozen.
Container Keep the tablets in their original package (blister pack) and do not use after the expiration date (EXP).
Safety The product must be kept out of the sight and reach of children.

Disposal Instructions

Unused or expired Buscamol must be disposed of in accordance with local regulations for pharmaceutical waste. Regulators instruct users not to flush the medicine down the toilet or throw it into wastewater. The product should generally be returned to a pharmacist or an authorized drug take-back program for safe disposal.

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

Available in countries:

Equivalent of Buscamol found in:

A-Z Index: