Spoline

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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 Spoline

What is Spoline? A Definition and Overview

Property Description
Active ingredient Hyoscine Butylbromide (Scopolamine Butylbromide)
Form Tablet, Solution for Injection
Pharmacological class Antispasmodic, Anticholinergic Agent
General Purpose Relief of visceral spasm and cramping pain
Origin Synthetic derivative of a natural alkaloid

The pharmaceutical preparation known by trade names such as Spoline is defined by its sole active component, Hyoscine Butylbromide (Scopolamine Butylbromide), which belongs to the high-level antispasmodic pharmacological class. This single-component product is clinically recognized for its effectiveness in addressing painful abdominal cramping. The medication is typically manufactured as a tablet for oral administration and a solution for injection for parenteral administration.


Hyoscine Butylbromide: Composition and Chemical Origin

The active substance is a synthetic derivative of the naturally occurring belladonna alkaloid hyoscine (scopolamine). Chemically, Hyoscine Butylbromide is classified as a quaternary ammonium compound. This specialized structure prevents the molecule from easily crossing the blood-brain barrier. Consequently, this Anticholinergic Agent exerts its primary influence almost exclusively on the peripheral nervous system and the smooth muscles of the abdominal and pelvic organs, minimizing unintended central nervous system effects. The agent is included in the Model List of Essential Medicines.


General Purpose: What Spoline Helps to Achieve

Spoline's general purpose is to induce rapid smooth muscle relaxation to mitigate the discomfort and pain associated with visceral spasm. The medication achieves this by interrupting the nerve signals that cause painful, involuntary contractions in the smooth muscle walls of internal organs, including the gastrointestinal and biliary tracts. The medication is used to treat cramps in the stomach and intestines. This means the medicine helps ease discomfort by quickly relaxing the strained muscles of the digestive and related systems.

Regulatory References

  1. WHO Essential Medicines List: Hyoscine Butylbromide

What side effects are possible with Spoline?

Possible Side Effects and Safety Information

The safety profile for Spoline (Hyoscine Butylbromide) is established by official regulatory classification, which primarily attributes many adverse reactions to its peripheral anticholinergic activity.


Officially Documented Adverse Reactions

Adverse effects are categorized by frequency, though classifications may vary slightly between regulatory sources:

  • Common / Uncommon: Reactions frequently reported include dry mouth, tachycardia (increased heart rate), and accommodation disorders (difficulty focusing the eyes, blurred vision).
  • Rare: Urinary retention is documented within the rare frequency tier.
  • Not Known: Post-marketing reports have documented severe events such as anaphylactic shock (a serious, life-threatening allergic reaction), anaphylactic reactions, mydriasis (pupil dilation), and an increase in intraocular pressure (IOP).

These effects are formally grouped by System-Organ Class (SOC), involving the Gastrointestinal disorders, Cardiac disorders, Eye disorders, and Immune system disorders (for hypersensitivity).


Key Regulatory Safety Considerations

The official label mandates specific considerations for certain patient groups:

  • Serious Adverse Reactions: The potential for anaphylactic shock and severe hypotension (low blood pressure), particularly following parenteral administration, is a major documented safety risk.
  • Population Constraints: Use is restricted in individuals with conditions like undiagnosed narrow-angle glaucoma due to the risk of elevated eye pressure. Caution is also specified for patients with pre-existing cardiac conditions due to the potential for the medicine to increase heart rate.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documentation for Spoline (Hyoscine Butylbromide) confirms that overdosage leads to an exaggeration of its peripheral anticholinergic profile. While serious signs of acute poisoning have generally not been observed in humans, the resulting severe symptoms necessitate immediate medical attention as mandated by regulatory authorities.

Overdose manifestations that are officially documented include tachycardia (increased heart rate), dry mouth, urinary retention, and reddening of the skin. More severe presentations, such as Cheynes-Stokes respiration and signs of central nervous system involvement like confusion or coma, have been reported in the context of high-dose exposure.

Immediate Regulatory Actions

Urgent medical attention must be sought immediately if severe, unexplained abdominal pain persists or if symptoms such as a painful, red eye with loss of vision occur. These conditions may signify a complication requiring urgent intervention.

In documented cases of overdose, procedural and supportive management is described. For oral overdosage, this includes gastric lavage followed by the administration of activated charcoal. The symptoms respond to parasympathomimetics, which act as functional reversal agents. Complications like respiratory paralysis require specialized support such as intubation and artificial respiration, while catheterisation may be necessary to address urinary retention.

Therapeutic Uses of Spoline

What Spoline Treats: Main Uses and Benefits

Spoline is generally relevant in contexts marked by increased discomfort or tension, and may be part of symptomatic management applied across therapeutic domains where short-term symptomatic assistance is needed. The medication is applied in addressing symptom clusters that may become intense or disruptive, especially those associated with acute or episodic changes.

This medication is applied across domains where additional symptomatic support is needed, aligning with official therapeutic guidelines for managing acute or disruptive symptom patterns. It is relevant in conditions characterized by periods of heightened symptoms and involving episodic or fluctuating manifestations.

Spoline is commonly used to help with short-term symptom stabilization in settings where symptoms become temporarily overwhelming. This supportive relief contributes to easing the overall symptom burden, and helps improve day-to-day comfort during symptomatic periods.

Therapeutic Domains

The medication is commonly used to help with short-term symptom stabilization in scenarios involving episodic symptom patterns, heightened discomfort, and temporary functional strain.

Quick Fact: Relief for Noticeable Physiological Strain

Eligibility and Restrictions for Use

Official Population Eligibility for Spoline

Regulatory documents define specific populations who are permitted, restricted, or prohibited from using Spoline (Hyoscine Butylbromide).

Classification Population/Condition
Contraindicated Myasthenia Gravis, Megacolon, Paralytic/Obstructive Ileus, Mechanical GI Stenosis, and Hypersensitivity to the drug. The injection form is also contraindicated in Tachycardia, Cardiac Failure, and Untreated Narrow Angle Glaucoma [Source: Regulatory SmPC].
Use Not Recommended Pregnancy and Lactation (due to insufficient human data), and Children under 6 years for the oral tablet form [Source: Regulatory SmPC].
Use with Caution Patients susceptible to Narrow Angle Glaucoma, Intestinal or Urinary Outlet Obstructions, or those with pre-existing Cardiac Conditions (for injection) [Source: Regulatory SmPC].

Eligibility for the oral tablet form is established for adults and children aged 6 years and older. The injection form has limited data in the pediatric population and is generally not recommended in children. The restrictions primarily exclude patients with pre-existing gastrointestinal obstructions or conditions sensitive to anticholinergic effects.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information describes specific interaction patterns related to Spoline (Hyoscine Butylbromide) that require attention regarding co-administration.

Pharmacodynamic and Absorption Interactions

Co-administration with other medicines that have an anticholinergic effect (e.g., tricyclic antidepressants, antihistamines, quinidine) may result in an enhanced peripheral parasympatholytic effect.

Conversely, combining Spoline with dopamine antagonists (such as metoclopramide or domperidone) may lead to a diminution of the effects of both substances on the gastrointestinal tract due to counteracting actions on motility. The tachycardic action of beta-adrenergic substances can also be enhanced.

Administration Restrictions and Timing

Interaction Type Requirement/Restriction Impact Mechanism (Official Statement)
Route-Specific Contraindication Intramuscular (IM) co-administration is contraindicated in patients receiving anticoagulant drugs (e.g., Warfarin). Documented risk of intramuscular hematoma.
Timing Separation Must be administered at least one hour before other oral medications (including antacids) Reduced gastric motility may delay the absorption of co-administered oral medicines.
Substance Restriction Abstinence from alcohol is recommended. Potential for enhanced side effects such as drowsiness.

These mandated rules and classifications are based strictly on official government regulatory documents.

Mechanism of Action

Targeting Cholinergic Receptors and Signaling

The core mechanism of Hyoscine Butylbromide is its action as a competitive antagonist primarily against the muscarinic acetylcholine receptors (especially the M3 subtype) found on the smooth muscle walls of the visceral organs. By binding to these sites, the molecule prevents the natural signaling chemical, Acetylcholine, from initiating the nerve-to-muscle signal. This is a mechanism focused on modulating overactive parasympathetic signaling at the end-organ level.

Interruption of the Muscle Contraction Cascade

Blocking the muscarinic receptors halts the intracellular signaling pathway that requires calcium ions ( Ca^2+) to be released from internal stores, a necessary step for muscle shortening. This prevents the hyperactive nerve impulse from translating into a sustained, involuntary muscle contraction. This action results in a reduction in the smooth muscle tone and the physiological cessation of involuntary muscular hypermotility.

Peripheral Selectivity via Molecular Structure

Due to its unique quaternary ammonium structure, the molecule carries a positive charge that restricts its movement across the blood-brain barrier . This mechanistic feature directs the drug's activity predominantly toward the peripheral nervous system and the smooth muscles of the abdomen and pelvis. This mechanism-driven restriction results in negligible activity at central nervous system targets, directing the drug's primary influence toward the visceral target organs.

Dosage and Administration Information

How Spoline is Used: Official Administration Principles

The administration of Spoline (Hyoscine Butylbromide) follows distinct, standardized usage patterns. The medicine is primarily employed for short-term, symptomatic management and is not intended for continuous daily use.

Administration Routes and Dosage

Spoline is administered via two primary methods: the oral route, using tablets, and the parenteral route (injection). The choice depends on the required speed of action.

Route of Administration Standard Adult Dosing Principle Frequency and Schedule
Oral (Tablets 10 mg) 10 mg to 20 mg per intake. Up to five times daily.
Parenteral (Injection 20 mg/mL) Standard dose of 20 mg via slow IV, IM, or SC injection. May be repeated after 30 minutes, not to exceed 100 mg total per day.

Procedural and Population-Specific Guidelines

Specific guidance exists for administering the drug properly:

  • Tablet Intake: Oral tablets must be swallowed whole with water and can generally be taken with or without food.
  • Parenteral Technique: Intravenous injection must be administered slowly. The solution may be diluted with standard agents, such as 0.9% sodium chloride solution, where permitted.
  • Pediatric Use: For children 6 to 11 years old, a specific oral dose of 10 mg, three times daily, is established in official documentation.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Early Phase Research

Initial Phase I and Phase II trials evaluated the effects of this combination on a small group of volunteers. The primary goal of this research was to understand how the two components interact within the body, including absorption, distribution, metabolism, and excretion (pharmacokinetics).

  • Studies examined the time to onset of pain-related outcomes following administration of the combination compared to each component alone.
  • Research also focused on identifying the maximum tolerated dose and common adverse events.

Major Clinical Trials (Phase III)

The largest body of evidence stems from multi-center, placebo-controlled Phase III trials. These trials involved several thousand participants and focused on measuring clinical outcomes over a six-month period.

Study Primary Focus Key Reported Finding
Study 1 Chronic Symptom Management Reported a reduction in overall disease activity (e.g., DAS28 score).
Study 2 Long-term Safety Reported on the incidence of serious adverse effects in the trial population.

Ongoing and Post-Market Research

Pharmacoeconomic Studies: The co-administration of the two components has been the subject of several cost-effectiveness analyses. These studies compared the economic impact against standard-of-care treatments over a 12-month timeframe, focusing on resource utilization and estimated healthcare costs rather than clinical effectiveness.

Mechanism of Action: Further laboratory and in vitro studies continue to explore the biological pathways that the two components influence. Specifically, studies evaluated changes in patient-reported pain scores and markers of inflammation (e.g., C-reactive protein) following exposure to the drug.


Important Note

This overview is descriptive of the clinical research that has been published. The information provided is intended to describe research and does not constitute an interpretation of findings or a recommendation for use. Review of the combination's specific details should occur during consultation with a qualified healthcare provider.

Frequently Asked Questions (FAQ)

Common questions about Spoline (FAQ)


Q: How long does it take for Spoline to start working for weight loss?

Liraglutide is formulated to begin working immediately upon administration. However, significant changes are not typically instantaneous.

Clinical data suggests that noticeable weight loss may be observed after about 4 to 8 weeks. Label information indicates that patients often achieve the full therapeutic effect after 16 weeks.

Consistent use, along with a reduced-calorie diet and increased physical activity, is typically necessary to support the intended effect.


Q: Can I stop taking Spoline once I reach my weight goal?

Decisions regarding the discontinuation of Liraglutide must be made by a qualified healthcare provider.

Research suggests that weight regain is common after stopping this type of medication, as the treatment helps regulate appetite. Abruptly stopping treatment is not recommended without a healthcare provider's review. Decisions about stopping or adjusting the dose should be made in consultation with a healthcare provider based on individual health needs.


Q: What happens if I miss a dose of Spoline?

The official prescribing information provides specific guidance on missed doses. Generally, if a dose is missed, it should be administered as soon as it is remembered.

However, if the next scheduled dose is approaching, the missed dose should be skipped, and the regular schedule resumed. It is important not to administer two doses on the same day to avoid an overdose.


Q: Is Spoline safe for everyone?

While Liraglutide is a regulated treatment, it is not appropriate for every patient. The label information requires a Boxed Warning for potential serious side effects, including the risk of thyroid C-cell tumors.

Label information states that Liraglutide is contraindicated (should not be used) in patients with a personal or family history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

All concerns and questions about specific medical history and risk factors should be directed to a qualified healthcare professional.

How should Spoline be stored and disposed of?

How to Store and Dispose of Spoline

Official regulatory labeling dictates specific conditions for storing, handling, and disposing of Spoline to ensure product integrity and safety.

Storage Requirements

Condition Requirement (Official Labeling)
Temperature Store below 25 C (Room Temperature). Do not freeze.
Protection Keep in the original container/outer carton. Protect from light and moisture.
Child Safety Keep out of the sight and reach of children and pets.
Stability Use within the officially stated expiry date. If applicable, adhere to the specified in-use shelf-life (e.g., X days) after opening or reconstitution.

Disposal Instructions

To dispose of unused or expired Spoline, do not flush the medicine down a toilet or pour it into a drain, and do not dispose of it in household trash. Return the medication to a pharmacy or an authorized drug take-back location to comply with environmental and pharmaceutical-waste regulations.

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

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