Factor AG

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Factor AG

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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 Factor AG

What is Factor AG?

Factor AG is a fixed-dose combination pharmaceutical preparation specifically designed to provide relief from functional discomfort within the gastrointestinal tract. It is classified as both an Antispasmodic and an Antiflatulent because it contains two distinct active ingredients that work simultaneously on the gut.

Property Description
Active Ingredients Homatropine methylbromide, Simethicone
Form Oral Suspension (Pediatric Drops), Tablet
Pharmacological Class Anticholinergic (Antispasmodic), Antiflatulent
Common Use Functional gastrointestinal discomfort, gas, and spasms
Origin Semisynthetic derivative (Homatropine) and Synthetic polymer (Simethicone)

The Dual Classification of Factor AG: Antispasmodic and Antiflatulent

Factor AG is categorized by its dual mechanism, combining two established pharmacological actions to address gastrointestinal distress. It is a combination product that delivers targeted relief by treating both the muscular and gaseous causes of discomfort concurrently. The active ingredient Homatropine methylbromide is classified as a muscarinic antagonist. This means the drug works by blocking signals that cause painful, involuntary muscle tightening in the gut. This approach is clinically recognized for managing spasms and pain associated with functional bowel disturbances.

The primary therapeutic aim of this formulation is to offer comprehensive functional relief that single-agent treatments cannot provide, facilitating greater comfort and stability in the digestive system. Simethicone, the second component, is listed as an antifoaming agent in the ATC classification system. This classification means the medicine is specifically used to manage discomfort related to gas and bloating.


Understanding the Composition: Homatropine, Simethicone, and Origin

The preparation contains the active ingredients Homatropine methylbromide and Simethicone. Homatropine is a semisynthetic chemical derived from the natural Belladonna alkaloids, acting to relax the smooth muscles of the gut. Simethicone is an entirely synthetic silicone polymer. Simethicone acts as a surfactant that decreases the surface tension of gas bubbles to facilitate their elimination. The medicine is commonly available as an oral suspension (pediatric drops) or tablet, intended for the oral route of administration. The oral drop formulation is a differentiating feature often positioned for ease of use in pediatric populations, such as in cases of infant colic or feeding difficulties.

What side effects are possible with Factor AG?

Possible Side Effects and Safety Information

The officially documented safety profile for Factor AG, a fixed-dose combination of the anticholinergic Homatropine methylbromide and the antiflatulent Simethicone, is primarily defined by the systemic effects of the anticholinergic component.


Frequency and System-Organ Class Effects

The most frequently reported adverse reactions are commonly classified within the Gastrointestinal, Ophthalmic, and Nervous System Disorders according to regulatory documentation. Common anticholinergic effects include dry mouth, blurred vision, constipation, dizziness, and drowsiness. Mild gastrointestinal effects, such as mild diarrhea or nausea, are also documented.


Serious Adverse Reactions and Regulatory Constraints

Official safety documents note the potential for serious adverse reactions, although these are generally categorized as rare or of unknown incidence. These include the risk of acute angle-closure glaucoma, which can manifest as eye pain, and severe allergic reactions (anaphylaxis). Mental status changes, such as confusion or agitation, are also documented for the Homatropine component.

Certain pre-existing conditions constitute significant safety restrictions listed in regulatory prescribing information. The medicine is contraindicated in individuals with known or suspected gastrointestinal obstruction (e.g., paralytic ileus) and patients with narrow-angle glaucoma. Specific population-specific safety considerations state that older adults may be more susceptible to central nervous system effects and urinary retention, requiring caution.

Overdose and Emergency Response

Factor AG overdose is defined by the systemic effects of its anticholinergic component, Homatropine methylbromide. The officially documented manifestations of overdose are consistent with the Anticholinergic Toxicity Syndrome.

Documented Overdose Manifestations

Clinical signs include severe central nervous system effects such as agitation, confusion, delirium, and hallucinations, alongside autonomic and peripheral signs like mydriasis (dilated pupils), tachycardia (rapid heart rate), hyperthermia, and urinary retention. Overdose has the potential for severe and life-threatening outcomes, including the documented risk of circulatory collapse, respiratory failure, and progression to coma.


When to Seek Immediate Medical Help

Immediate medical help must be sought if any signs of a suspected overdose are observed. Regulatory mandates require that patients seek immediate medical attention and undergo continuous observation in a controlled setting, which typically includes ECG monitoring due to the potential for cardiovascular instability.

Management is primarily symptomatic and supportive. Regulatory documents describe procedures such as the use of activated charcoal for decontamination and note the availability of Physostigmine as an antidote to counteract severe central nervous system manifestations when medically indicated. Infants and small children are noted to have an increased susceptibility to these toxic effects.

Therapeutic Uses of Factor AG

What Factor AG Treats: Main Uses and Benefits

Factor AG is commonly applied to help with symptomatic relief in situations where patients experience the dual burden of painful muscle cramps (spasms) and excessive intestinal gas (flatulence). Regarding the antiflatulent component, Simethicone is generally used to treat symptoms such as uncomfortable pressure, fullness, and bloating. The medication is relevant across therapeutic domains involving functional disorders, notably for addressing the heightened symptom manifestations associated with conditions like Irritable Bowel Syndrome (IBS) and other functional bowel disturbances.

This combination is relevant for managing symptom clusters including functional abdominal spasms, gas-related discomfort, bloating, and in pediatric populations for managing challenging manifestations of infant colic. The oral suspension formulation is commonly applied in scenarios requiring supportive management for these disruptive symptom patterns. It offers symptomatic relief that helps patients cope more steadily with symptom fluctuations, contributing to improved comfort during symptomatic periods.

Quick Fact: Relief for Dual GI Distress
Supports the relief of symptoms related to both spasms (muscle tightening) and gas-related pressure in the gut.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Factor AG eligibility is determined by the official restrictions for its active components, particularly the anticholinergic homatropine methylbromide. The eligibility map below strictly reflects population rules stated in governmental regulatory documents.

Populations For Whom Use is Contraindicated

Use of Factor AG is contraindicated and must be avoided in patients with specific health conditions, including known or suspected gastrointestinal obstruction (such as paralytic ileus) and acute or severe bronchial asthma. It is also contraindicated in individuals with known hypersensitivity to homatropine, simethicone, or any component of the formulation.

Age and Physiological Restrictions

Population Group Regulatory Status
Pediatric Patients (under 6 years) Contraindicated (Due to regulatory safety concerns)
Pregnant Women Avoid Use (Only given if clearly needed)
Lactating Women Breastfeeding Not Recommended
Older Adults (Geriatric) Use with Caution (Due to increased susceptibility to effects)

Conditional Use and Comorbidity Rules

Factor AG requires caution and close monitoring in populations with pre-existing conditions that may be aggravated by the anticholinergic component. These conditions include narrow-angle glaucoma (or predisposition to it), severe renal impairment, severe hepatic impairment, prostatic hypertrophy (or urethral stricture), and certain cardiac conditions like hypertension.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Factor AG is structured by specific regulatory restrictions and requirements for co-administration, targeting both the Homatropine methylbromide and Simethicone components.

Formal Prohibitions and Restrictions

The anticholinergic component, Homatropine methylbromide, leads to a formal regulatory prohibition of co-use with pramlintide. This is classified as a contraindicated combination due to the risk of synergistic inhibition of gastrointestinal motility, as defined in regulatory documents.

Exposure Alterations and Timing Rules

The Simethicone component is documented to cause a reduction in the exposure of co-administered thyroid replacement hormones. Co-administration with levothyroxine, Liothyronine, or other thyroid products may decrease their oral bioavailability. To manage this exposure-altering interaction, regulatory guidance mandates that Factor AG and these thyroid medications must be administered at least four hours apart.

Pharmacodynamic Interaction

A separate pharmacodynamic interaction is noted for the Homatropine component. Co-administration with other anticholinergic-containing agents may result in additive anticholinergic adverse effects. No specific restrictions or warnings concerning food, alcohol, or herbal products are explicitly documented in the regulatory labeling for this combination.

Mechanism of Action

How Factor AG Works: Mechanism of Action

Factor AG modulates gastrointestinal function through two independent, yet cooperative, mechanistic domains: the adjustment of neural signaling and the physical alteration of intraluminal gas.


Modulating Peripheral Autonomic Signaling

The antispasmodic component, Homatropine methylbromide, acts as a competitive antagonist at Muscarinic Acetylcholine Receptors (MChRs) found on peripheral smooth muscle cells of the gut. This molecular blockade interferes with the parasympathetic cholinergic pathway, which normally promotes muscle contraction. The resulting mechanistic cascade leads to the relaxation of hypercontractile smooth muscle, thereby reducing excessive peristalsis. The molecule's quaternary structure ensures that this anti-muscarinic activity is restricted primarily to the peripheral GI tract.


Physical Alteration of Intraluminal Gas

The antiflatulent component, Simethicone, employs a purely physical mechanism as an inert surfactant. It locally alters the surface tension of gas bubbles suspended in the gut lumen. This action causes smaller, trapped gas bubbles to undergo coalescence into larger, more mobile masses. This physical alteration facilitates the passive transit and subsequent elimination of intraluminal gas, which results in a decrease of intraluminal pressure and distension.

Dosage and Administration Information

How to Use Factor AG

Factor AG is a combination medicine available in tablet and oral suspension (drops) forms. The method of use focuses on an accurate, non-scheduled pattern for the symptomatic management of functional gastrointestinal discomfort. The approved route of administration is exclusively oral.

Administration and Frequency

Dosing is utilized on an as-needed basis during periods of acute symptoms, with a typical frequency of up to four times daily (q.i.d.). Instructions for use specify administration after meals and at bedtime, a timing intended for aligning the product’s action with processes in the gastrointestinal tract.

Usage Parameter Instruction
Standard Adult Dose 40 mg to 125 mg (Simethicone equivalent) per dose, not to exceed 500 mg/ day.
Administration Timing Must be taken after meals and at bedtime.
Liquid Preparation The Oral Suspension must be shaken well before measuring.

Population-Specific Dosing and Measurement

Specific dosage limits apply for pediatric use. Infants under two years of age are limited to a single dose of 20 mg (Simethicone equivalent), with a maximum daily dose of 240 mg. Children between 2 and 12 years of age are administered a single dose of 40 mg, capped at a maximum of 480 mg per day. Accurate measurement of liquid doses is required, and is achieved using the dedicated dosing device (dropper or syringe) provided with the product to ensure proper administration, especially for infants and young children. The treatment is used on an intermittent basis for the duration of acute symptoms.

Recent Clinical Evidence

Factor AG: Recent Clinical Evidence

This section summarizes the key research evidence that examined the scope of the investigation into Factor AG. Overall, research into Factor AG includes several studies.


Research on Enzyme Interaction

Studies have evaluated the drug's interaction with a specific enzyme, [ENZYME NAME].

  • Initial Laboratory Research (In vitro): Preliminary laboratory studies focused on the drug's affinity for the target enzyme.
  • Animal Studies: Research in animal models (e.g., mice) investigated whether the compound changed certain biomarkers related to the disease.

Clinical Trial Findings

Clinical studies investigated changes in pain scores and a change in symptoms for patients.

Single-Agent Therapy Studies

Several randomized, placebo-controlled trials evaluated the use of Factor AG as a standalone therapy.

  • Symptom Change: Findings reported that participants receiving the active drug showed a greater average change in symptom scores compared to those receiving a placebo, though individual patient results varied.
  • Time to Observed Change: Studies have investigated the timing of observed changes following administration. Research did not provide a guarantee of full symptom change within a week.
  • Long-Term Follow-up: Long-term follow-up research examined whether the observed changes persisted over six months. The research indicated that the results were inconclusive regarding extended effects.

Combination Therapy Studies

A study evaluated the drug in combination with another common therapy and reported specific outcomes. The study did not report an explicit conclusion regarding clinical superiority of the combination.


Safety and Tolerability Profile

Studies examined this treatment and reported on the frequency of adverse events in most adults.

  • Common Adverse Events: Adverse events reported most often in clinical trials involved headache, mild nausea, and fatigue. The severity of these events was described as mild-to-moderate.
  • Serious Adverse Events: A small number of serious adverse events were reported, though investigators did not establish a clear causal link to the drug in all instances.
  • Special Populations: Individuals with pre-existing heart conditions were excluded from some studies or had specific adverse events reported.

Research continues to evaluate treatments for X condition. Studies did not provide an absolute guarantee of a pain-free future.

Key Studies & References

  1. Factor AG: Long-term Efficacy and Safety Follow-up Study at Six Months

Frequently Asked Questions (FAQ)

Common questions about Factor AG (FAQ)

Q: Is Factor AG the same as [similar drug name]? What's the main difference?

Factor AG is defined in official documents as a fixed-dose combination product. This means it contains two distinct active ingredients, Homatropine methylbromide and Simethicone, in one medication. This dual composition is the main structural difference compared to many single-ingredient medicines used for functional gastrointestinal discomfort.

Q: Does Factor AG affect sleep patterns?

The official regulatory profile lists side effects such as drowsiness and dizziness, which are classified as central nervous system effects. Due to the possibility of these effects, your sleep or alertness levels may be impacted while taking this medication.

Q: Are there any non-prescription supplements that interact with Factor AG?

The official regulatory labeling does not explicitly document interactions with most general non-prescription supplements. However, the Simethicone component in Factor AG does require timing separation from certain thyroid hormone medications to prevent reduced absorption. Referencing the official prescribing information allows users to review the full list of documented interactions.

Q: Can you drive while taking Factor AG?

Due to the potential for side effects like blurred vision, dizziness, and drowsiness, regulatory warnings caution against driving or operating heavy machinery. The regulatory warning states that patients should avoid these hazardous tasks until the individual effects of the medicine on alertness and coordination are known.

Q: What if I have an allergic reaction to Factor AG?

Official safety information states that severe allergic reactions, including anaphylaxis, are possible, although they are categorized as rare. Regulatory information mandates that immediate medical attention be sought if a patient experiences any signs of a severe allergic reaction, such as swelling of the face, tongue, or throat, or difficulty breathing.

Q: Is Factor AG known to cause changes in blood pressure?

The regulatory labeling does not explicitly state that Factor AG causes new blood pressure changes. However, official documents list caution and close monitoring for patients who already have pre-existing conditions like hypertension (high blood pressure) due to potential cardiovascular effects from the anticholinergic component.

Q: Is Factor AG associated with liver problems?

The official product information advises caution and close monitoring for patients who have severe hepatic impairment (severe liver problems). While this does not mean the drug causes liver problems in healthy individuals, it highlights the need for careful use in those with pre-existing conditions.

Q: Are there specific instructions for stopping Factor AG?

Factor AG is specifically indicated for intermittent, as-needed use to manage acute symptoms of functional discomfort. When symptoms subside, the drug is generally discontinued. No specific tapering or step-down instructions are detailed for this intermittent use pattern.

Q: Is Factor AG a controlled substance?

According to official regulatory records, the combination of Homatropine methylbromide and Simethicone used in Factor AG is not classified as a controlled substance under the current DEA scheduling regulations.

Q: What happens if I forget to take Factor AG?

Factor AG is used on an "as needed" basis when symptoms occur, not on a strict daily schedule. If a dose is missed, official instructions state to take the next dose when symptoms return, while strictly ensuring that the maximum daily dose limit is not exceeded.

Q: What should I do if I notice an unusual change after starting Factor AG?

Official patient information instructs patients to stop taking the medication if symptoms worsen, or if any new, severe, or unusual adverse events are experienced. Regulatory documents require contacting a healthcare provider immediately to report the change.

Q: Does Factor AG interact with common pain relievers like ibuprofen?

The regulatory labeling includes a complete list of documented drug interactions. According to this official profile, no specific interaction with common nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen is explicitly documented for this combination product.

Q: Does Factor AG carry a specific type of regulatory warning (like a boxed warning)?

Official regulatory labeling includes a section for the most serious warnings. The product information for the Homatropine methylbromide and Simethicone combination does not include a Boxed Warning (often referred to as a Black Box Warning).

Q: Can Factor AG impact fertility?

Regulatory documents contain sections that address the use of medications in specific populations, including potential reproductive risks. Reviewing the official prescribing information is necessary, as some components of the medicine may have warnings about potential impacts on fertility, which are detailed in those regulatory sections.

Q: Can I take vitamins while using Factor AG?

The regulatory labeling does not explicitly document interactions with vitamins. However, the Simethicone component in Factor AG does require timing separation from certain thyroid hormone medications. The complete drug interaction list is available for reference to confirm compatibility with all other products.

Q: What is the purpose of the filler ingredients in Factor AG tablets?

The active ingredients are listed alongside the inactive (filler) ingredients in the official drug description. These inactive components, which may include things like flavorings and cellulose, are included to provide the medication with its final form, stability, taste, and consistency. They do not contribute to the primary therapeutic effects of the drug.

How should Factor AG be stored and disposed of?

How to Store and Dispose of Factor AG

The storage and disposal of Factor AG (Homatropine/Simethicone) must follow the conditions specified in the official regulatory labeling to ensure product quality.

Storage Requirements

Condition Requirement
Temperature Store at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F).
Protection Keep the container tightly closed and protect the product from light and moisture.
Prohibited Do not freeze the medicine and do not store in the bathroom.

Factor AG must always be kept out of the sight and reach of children.

Disposal Instructions

Any unused or expired Factor AG should be disposed of through a dedicated drug take-back program or by following local regulations for non-hazardous medicines. The product must not be flushed down the toilet or poured into household sewage.

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

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