Alcophyllex

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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 Alcophyllex

Property Description
Active ingredients Ammonium Chloride, Diphenhydramine HCl, Diphenylpyraline Hcl, Etofylline, Sodium Citrate, Theophylline
Form Oral liquid (Syrup, Mixture)
Pharmacological class Bronchodilator, H1-Antihistamine, Expectorant
Common use Symptomatic relief of respiratory discomfort
Origin Synthetic

What Type of Medicine is Alcophyllex?

Alcophyllex is defined as a multi-component pharmaceutical preparation, typically provided as an oral liquid (syrup or mixture), distinguishing it from single-active-ingredient drugs. This formulation is classified as a combination agent, uniting agents from distinct therapeutic classes: a Bronchodilator, a first-generation H1-Antihistamine, and an Expectorant. This specific blend of multiple synthetic active compounds is clinically recognized for addressing the varied components of respiratory congestion.

Its identity is centered on this complex, multi-ingredient status, which is a differentiating factor. By combining agents that relax the airways with those that manage secretions, Alcophyllex offers a broad mechanism of relief, often positioned for both adult and paediatric patient groups, depending on the specific national formulation.

Composition and Active Ingredients

The efficacy of Alcophyllex is derived from its mixture of substances, notably Theophylline and Etofylline, Diphenhydramine Hydrochloride, Diphenylpyraline Hcl, Ammonium Chloride, and Sodium Citrate. These are suspended in an aqueous solution base suitable for oral administration.

The primary bronchodilator action stems from the xanthine derivatives (Theophylline and Etofylline), which function by promoting smooth muscle relaxation necessary for bronchodilation. The formula also incorporates Diphenhydramine, placing it within the H1-antihistamines, and Ammonium Chloride, which is included for its therapeutic contribution as an expectorant. This unique composition allows for the simultaneous management of irritated airways and mucus production.

General Purpose and Core Benefits

The primary purpose of Alcophyllex is to provide symptomatic relief for the discomfort associated with conditions affecting the respiratory tract. The central benefit is achieved through the dual actions of promoting airway relaxation and enabling the management of excessive or thick secretions.

This comprehensive action directly addresses the two key issues targeted by the medication: constricted breathing tubes and the difficulty of clearing accumulated phlegm. The formulation is intended to improve overall breathing comfort and supports the body’s natural clearance of the chest.

Regulatory References

  1. Bronchodilators - Mechanism and Clinical Use
  2. H1 Antihistamines: Current Status and Future Directions
  3. Synthetic Drug - NCI
  4. Aqueous Solutions in Pharmaceutical Preparations - StatPearls - NCBI
  5. Oral Route of Drug Administration - StatPearls - NCBI
  6. Xanthine Derivatives - NCI
  7. Symptomatic Treatment - NCI
  8. Mucus and Sputum Clearing in Airway Clearance Therapy - NCBI

What side effects are possible with Alcophyllex?

Possible Side Effects and Safety Information

The safety profile of Alcophyllex, based on official regulatory documents, highlights adverse reactions primarily affecting the central nervous system, cardiovascular system, and gastrointestinal tract. The risk and severity of some side effects are explicitly stated as dose- or concentration-dependent.

Frequent Adverse Reactions

Side effects that are common or frequently documented include:

System-Organ Class Examples
Nervous System Headache, tremor, restlessness, dizziness, reflex hyperexcitability, insomnia.
Psychiatric Anxiety, irritability, agitation, nervousness.
Cardiac Palpitations, tachycardia, cardiac dysrhythmia.
Gastrointestinal Nausea, vomiting, abdominal pain, gastric irritation, reactivation of peptic ulcer.

Serious Adverse Reactions

Official regulatory sources document the potential for serious reactions, including convulsions (seizures), severe allergic reactions (hypersensitivity), serious heart problems, and coma, particularly linked to high levels of the medicine in the blood.

Dose-Related Safety Pattern

The intensity of side effects is directly related to the concentration of Theophylline in the blood plasma. Cardiac dysrhythmias and coma are specifically linked to plasma concentrations greater than 40 mg/L.

Population-Specific Safety Notes

  • Elderly: This population is more susceptible to side effects like drowsiness, dizziness, confusion, and low blood pressure.
  • Children: The medicine is unsuitable for children suffering from diabetes mellitus and is contraindicated in children under the age of 2 years.

Contraindications and Restrictions

Alcophyllex is formally contraindicated (must not be used) in patients with conditions such as:

  • Diabetes mellitus
  • Peptic ulceration
  • Severe renal or hepatic disease
  • Epilepsy (fits) or a history thereof

Patients are formally warned that the medicine may cause drowsiness and impaired concentration, necessitating caution when performing tasks that require full alertness.

Overdose and Emergency Response

Overdose and When to Seek Help

This section outlines the officially documented clinical information regarding Alcophyllex overdose, derived from governmental regulatory sources.

Documented Manifestations of Overdose

Overdose presentations typically involve multiple physiological systems. Initial signs of toxicity commonly include severe gastrointestinal distress (nausea and persistent vomiting), central nervous system hyperactivity (headache, insomnia, tremors, and restlessness), and cardiovascular effects (tachycardia and palpitations).

Serious and Life-Threatening Outcomes

Severe toxicity can rapidly escalate to life-threatening events. The most critical outcomes documented in regulatory labeling are generalized seizures and potentially fatal ventricular arrhythmias (irregular heart rhythms).

Immediate Actions and Emergency Care

If an overdose is suspected, the product must be discontinued immediately.

Urgent medical attention must be sought immediately for any suspected overdose, especially if severe manifestations such as seizures or dangerous cardiac events are observed. Immediate professional management is required, often involving supportive care, continuous cardiac monitoring, and symptomatic treatment to manage specific effects, such as the use of benzodiazepines to control seizures.

Population Considerations

Regulatory information notes an increased susceptibility to severe toxicity, particularly the risk of seizures, in the pediatric population. Patients with pre-existing hepatic impairment also require increased clinical vigilance during management.

Therapeutic Uses of Alcophyllex

What Alcophyllex Treats: Main Uses and Benefits

This medication is commonly used to help with symptoms related to physical discomfort arising from constricted lower airways, such as wheezing and a feeling of chest tightness. The bronchodilator components are incorporated to address these specific manifestations through the relaxation of the airways.

It is applied in clinical settings that involve acute or unstable symptom patterns, relevant for easing distressing manifestations found in conditions like acute bronchitis, the common cold, and seasonal allergies. The formulation helps address complex symptom clusters that often occur together, including productive cough, chest congestion, runny nose, sneezing, and ocular irritation.

“This supportive therapy may assist in managing symptoms that create noticeable physiological strain.”

By providing supportive relief for the airways and assisting with mucus management, this treatment generally contributes to improved comfort during periods of heightened symptoms and supports general well-being during symptomatic phases.

Quick Fact: Relief for Complex Respiratory Symptoms Used across therapeutic domains where short-term symptomatic assistance is needed for concurrent chest congestion, wheezing, and upper airway irritation.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility Profile: Who Can and Cannot Use Alcophyllex?

Alcophyllex eligibility is strictly defined by regulatory bodies based on its multi-component formula, primarily the Theophylline and Diphenhydramine components. Use is permitted for adults and adolescents 12 years of age and older, aligning with multi-component cough and cold medicine guidelines.

Absolute Contraindications

The medicine is strictly contraindicated for several populations. These include children under the age of two years and any individual with known hypersensitivity to its active ingredients. Absolute prohibition also applies to patients concurrently using Monoamine Oxidase Inhibitors (MAOIs) or who have discontinued them within the past 14 days. The label also specifies contraindications for patients with epilepsy and those experiencing an acute attack of asthma.

Restricted and Conditional Use

Use is subject to mandatory caution and monitoring in several groups. Patients with hepatic or renal impairment require special consideration due to altered drug clearance. Specific conditions such as active peptic ulcer disease, certain cardiac arrhythmias, and conditions aggravated by anticholinergic effects (e.g., narrow-angle glaucoma) require careful assessment. The medicine is not recommended for use in breastfeeding women. Use during pregnancy is generally restricted and advised only when clearly needed.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define the interaction profile of Alcophyllex based on its active components, primarily involving changes in theophylline plasma concentrations and risks of additive toxicities.

Contraindicated and Avoided Combinations

Co-administration with Monoamine Oxidase Inhibitors (MAOIs) is contraindicated, and use must be avoided for at least 14 days after discontinuing MAOI therapy. Concomitant use with other xanthines (e.g., aminophylline) and with ephedrine in children is also advised to be avoided due to the risk of additive effects.

Clinically Significant Pharmacokinetic Interactions

Interactions are documented based on effects on theophylline clearance:

  • Increased Plasma Concentrations (Decreased Clearance): Medicines such as cimetidine, erythromycin, oral contraceptives, quinolones, and verapamil may significantly decrease theophylline clearance, increasing the risk of adverse reactions.
  • Decreased Plasma Concentrations (Increased Clearance): Agents like phenytoin, rifampicin, and cigarette smoking may increase theophylline clearance, which can lead to reduced clinical effectiveness.

Additive Toxicity and Other Effects

Caution is required when co-administering with certain other products:

  • Hypokalaemia Risk: Co-administration with beta-2 agonists, corticosteroids, or diuretics may potentiate the risk of low potassium levels (hypokalaemia).
  • Enhanced Sedation: The sedative effects of CNS depressants (e.g., alcohol, hypnotics, narcotics) may be enhanced.
  • Antagonistic Effects: This product may oppose the effects of drugs such as adenosine and competitive neuromuscular blockers.
  • Diagnostic Interference: The antihistamine component may suppress the results of skin tests, requiring temporary discontinuation prior to testing.

Mechanism of Action

Alcophyllex exerts its effects through its active component, Theophylline, a methylxanthine derivative, engaging multiple distinct mechanistic pathways.

Enzyme Inhibition for Airway Diameter Regulation

Theophylline acts as a non-selective inhibitor of phosphodiesterase (PDE) enzymes, particularly PDE3 and PDE4. This interaction impedes the degradation of intracellular cyclic adenosine monophosphate (cAMP) within bronchial smooth muscle cells. The resulting increase in cAMP concentration initiates a cascade that culminates in the relaxation of bronchial smooth muscle (bronchodilation), a key physiological adjustment for airway diameter regulation.

Receptor Blockade to Alter Constriction

The drug also functions as a non-selective antagonist of adenosine receptors (A1, A2A, A2B). By engaging this receptor-mediated signaling mechanism, Theophylline reduces the consequence of excessive mediator activity and prevents adenosine-induced tightening, resulting in altered pathway regulation within targeted pulmonary tissue.

Modulation of Inflammatory Gene Expression

A third pathway involves the activation of histone deacetylase 2 (HDAC2). This molecular modification supports transcriptional regulation by suppressing inflammatory components, contributing to attenuated physiological responses.

Dosage and Administration Information

How Alcophyllex is Used: Standard Administration Guidelines

Alcophyllex is a multi-component oral liquid, and its use is governed by a defined set of administration guidelines. These instructions are intended to ensure the medication is taken correctly and consistently, based on established prescribing information.

Administration and Dosing Schedule

Feature Guideline Instruction
Route of Administration Oral administration only (swallowed liquid).
Standard Adult Dose 15 mL per single dose.
Standard Pediatric Dose (2–12 years) 10 mL per single dose.
Frequency Three times daily (t.i.d.).
Timing Recommended to be taken after meals and at bedtime.

Key Procedural Requirements

Administration requires the use of a medicine measure or a calibrated dosing device to ensure that the volume is accurately measured before swallowing. Patients must adhere strictly to the recommended dosing volumes and frequency, as guidelines explicitly caution users to not exceed the prescribed dose.

Population-Specific Considerations

Established instructions include specific warnings regarding use in certain groups. Caution and potential dose adjustment are required for older adults and for patients who have pre-existing renal or hepatic disease. This is necessary to manage the clearance of the active ingredients. The 10 mL dose is specifically indicated for the 2–12 age group, with use outside of this range requiring explicit medical determination.


Note: This content summarizes instructions for use and does not constitute medical advice or cover safety information.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Alcophyllex

Evidence for Use in Bronchospasm associated with Bronchial Congestion

Research examining the components of Alcophyllex for conditions like asthma or bronchitis primarily involves Randomized Controlled Trials (RCTs) and systematic reviews. These studies were used in research exploring how symptoms change over time in adult populations experiencing conditions characterized by fluctuating or episodic manifestations. Researchers monitored outcomes related to physiological strain or stress, such as changes in how easily air moves through the lungs (respiratory function tests), alongside patient-reported outcomes describing perceived discomfort related to breathing.

It is important to note that the existing evidence is often focused on the individual components rather than the specific fixed-dose combination of Alcophyllex. Evidence is limited for the long-term patterns of the combination product. Studies exploring outcomes related to systemic or functional imbalance tend to have follow-up durations that were limited, meaning the patterns of sustained change over time are not fully established.

Evidence for Symptomatic Relief of Cough

Research for using Alcophyllex components for temporary cough relief was evaluated in settings relevant in trials assessing short-term or episodic symptom patterns, such as cough associated with colds. These studies are mostly short-term RCTs, often lasting no longer than the duration of an acute illness. Researchers examined outcomes related to physical discomfort, including the frequency of coughing (often measured objectively) and scales completed by patients describing the intensity of their cough.

Long-Term Studies and Follow-Up Data

Studies on Alcophyllex or its components have primarily focused on research exploring short-term symptom changes and acute effects. Therefore, the available evidence often provides limited insight into how the product might perform over extended periods. Long-term effects are not fully established because follow-up durations were limited in many of the key trials.

Evidence in Special Populations

Research was studied for some specific groups beyond the general adult population. For example, some studies research examined the use of the components in children over the age of two who were experiencing conditions associated with acute or disruptive episodes. However, data for certain groups remain insufficient. For instance, specific research for these components during pregnancy or breastfeeding is limited, meaning certainty remains low for these situations.

What is Still Uncertain About Alcophyllex Research

While Alcophyllex was studied for its approved uses, several uncertainties remain in the research landscape. Comparative evidence is lacking in some areas, particularly concerning the head-to-head comparison of this specific combination against other established standard therapies. Evidence quality varies across studies, and sample sizes were modest in some of the initial work, meaning the findings describe group patterns, not personal outcomes.

Frequently Asked Questions (FAQ)

Common questions about Alcophyllex (FAQ)


Q: What is the main reason Alcophyllex is prescribed?

Official regulatory documents indicate that the medicine is used to provide symptomatic relief for a tight chest. This discomfort is typically associated with conditions such as asthma, colds, and bronchitis. The formulation is intended to address the varied symptoms of respiratory congestion.

Q: How long can a person safely use Alcophyllex?

Official documents describe the use of this medicine for symptomatic relief of mild or acute illness. Research evidence is primarily focused on short-term changes, meaning that patterns of sustained use over longer periods of time are not fully established in official trials.

Q: Can Alcophyllex cause long-term side effects?

The available research evidence is primarily focused on short-term outcomes and acute effects of the medicine. Due to these limited follow-up durations in key trials, patterns of sustained change or potential long-term effects are not fully established by regulatory evidence.

Q: Are there different strengths or formulations of Alcophyllex?

The official product formulation is specified as a multi-component oral liquid mixture. Regulatory documents define the precise concentrations of active ingredients within this liquid formulation.

Q: Is Alcophyllex safe for use in older adults?

Regulatory documents specify that caution is required for older adults, and potential dose adjustments are described as required. This is because this population may be more susceptible to certain side effects, such as dizziness, drowsiness, and confusion, as noted in the official safety information.

Q: Is it common to feel tired after starting Alcophyllex?

Official product information lists drowsiness as a frequently documented adverse reaction affecting the central nervous system. This effect is described as a possibility when taking the medicine.

Q: Can Alcophyllex be used alongside flu or cold remedies?

Official documents describe the need for caution when considering combining this medicine with other products that contain similar active ingredients. This includes other xanthines (like theophylline) or antihistamines, due to the increased risk of additive effects from these components.

Q: Is Alcophyllex considered a high-risk medication by regulators?

Official documents list several serious adverse reactions, including convulsions and serious heart problems, and numerous contraindications (conditions where it must not be used). This is why careful monitoring and eligibility assessment are required by regulatory documents.

Q: Can Alcophyllex be split or crushed for easier consumption?

The official method of administration is oral, using a calibrated measuring device. Doses of the liquid formulation are instructed to be taken with an adequate amount of fluid, such as half to one glass of water.

Q: Can Alcophyllex be used intermittently or only continuously?

Research evidence supporting the use of the medicine is often evaluated in the context of short-term or episodic symptom patterns. These studies typically focus on acute conditions rather than long-term maintenance.

Q: Do food interactions impact the absorption of Alcophyllex?

Official administration instructions specify that the medicine is typically taken after meals. This specific timing is a consideration related to the absorption and gastric tolerability of the active components.

Q: Is Alcophyllex used for any conditions other than the primary one described?

Official regulatory documents only define the authorized therapeutic indications for which the medicine has been formally approved. Information on other potential uses is not contained within the official product documentation.

Q: How quickly does Alcophyllex usually start to have an effect?

Information regarding the onset of effect for multi-component products is typically addressed by the known pharmacokinetics of the primary active ingredient, Theophylline. This information is available in authoritative medical databases.

Q: What should be done if a dose of Alcophyllex is missed?

Regulatory guidance specifies that if a dose is missed, it should be taken as soon as it is remembered. However, if it is close to the time for the next scheduled dose, the guidance specifies skipping the missed dose and resuming the normal schedule, with a warning against doubling the dose.

Q: Is Alcophyllex a controlled substance?

In some regions, the medicine has been assigned a specific classification status by regulatory authorities. For example, in South Africa, the medicine is classified as a Schedule 2 (S2) product.

Q: Are there specific food items that must be avoided while using Alcophyllex?

Official documents indicate the medicine is typically taken with fluid after meals. However, specific food items that are strictly contraindicated or forbidden are not listed in the official product information.

Q: Does Alcophyllex require a prescription in most places?

Regulatory status varies by region. In some areas, such as South Africa, the medicine is designated as a Schedule 2 product, which is obtainable without a doctor's prescription for the treatment of mild illness.

Q: Why is Alcophyllex sometimes described as 'non-addictive'?

In some regions, the medicine is classified as a Schedule 2 product, indicating a specific regulatory status. This classification is typically associated with medicines that have a lower potential for abuse and dependence compared to higher scheduled drugs.

Q: How long does Alcophyllex stay in the body after the last use?

The time the active ingredient, Theophylline, stays in the body is described as highly variable between individuals. Regulatory-referenced data suggests the average half-life in adults can range approximately from 3 to 13 hours.

Q: Are there any specific lifestyle changes recommended when using Alcophyllex?

Regulatory warnings specify that caution is required regarding the use of alcohol due to the risk of enhanced sedation. Additionally, the product information notes that cigarette smoking may decrease the plasma concentration of the active component Theophylline.

Q: Does Alcophyllex interact with caffeine?

The medicine contains active ingredients that are xanthine derivatives (Theophylline and Etofylline). Regulatory information indicates that caution is required with the co-administration of other xanthine-containing products or stimulants due to the potential for additive effects.

How should Alcophyllex be stored and disposed of?

How to Store and Dispose of Alcophyllex?

The official storage requirements for Alcophyllex, an oral liquid mixture, are mandated by regulatory authorities to ensure product stability and safety.

Official Storage Requirements

Requirement Type Condition as per Official Labeling
Temperature Store at or below 25°C.
Protection The product must be protected from light.
Container Keep in the original container and keep the container tightly closed.
Child Safety Store the medicine out of the reach of children.
Stability Do not use the product after the expiry date stated on the bottle.

Disposal Instructions

To safely dispose of unused or expired Alcophyllex, it must not be thrown into the sewage system or drains. All unused medicine should be returned to a pharmacist for destruction according to pharmaceutical waste regulations.

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

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