Sisaal

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Sisaal

Treatment option: Cough

Medically reviewed

Laura Arias

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 Sisaal

Property Description
Active ingredient Dextromethorphan Hydrobromide (INN)
Form Syrup, oral solution, tablet, capsule, lozenge
Pharmacological class Central-acting Antitussive (Cough Suppressant)
Common use Temporary relief of non-productive (dry) cough
Origin Synthetic compound

Sisaal is a medicinal preparation whose active ingredient is Dextromethorphan Hydrobromide, designated fundamentally as an antitussive agent. This medicine is clinically recognized for providing temporary relief from persistent, debilitating non-productive cough, which is a dry cough that lacks mucus production.


What Type of Medicine is Sisaal? (Classification and Origin)

Sisaal is classified as a central-acting antitussive, a medication type specifically engineered to suppress the cough reflex through action on the central nervous system. The Dextromethorphan Hydrobromide compound is a synthetic compound that is structurally recognized as a morphine derivative; however, it is consistently classified as a non-opioid and non-narcotic antitussive at typical therapeutic levels. This distinction indicates that the drug's clinical utility is focused on modulating the cough reflex sensitivity without providing the dependency risk or significant analgesic effects associated with classic opioid pain relievers.


Composition, Forms, and General Therapeutic Purpose

The medicine is available for oral administration in multiple dosage forms, including the characteristic syrup and oral solution forms, alongside tablets, capsules, and lozenges. The high-level composition involves the active ingredient Dextromethorphan Hydrobromide combined with a base, typically an aqueous or hydroalcoholic solution for liquids. The availability of diverse forms allows for varied release profiles, including standard immediate-action and specialized extended-release formulations, all dedicated to effectively reducing the frequency and intensity of the involuntary coughing urge.


How Does Dextromethorphan Work to Suppress Cough?

Dextromethorphan works by exerting a central action on the medullary cough center, a key regulatory area in the brainstem that controls the cough mechanism. This mechanism increases the cough threshold—the level of irritation required before a cough is triggered—by modulating the nerve signals that initiate the reflex. The functional outcome is the direct reduction of the body's sensitivity to internal signals that normally initiate coughing, thus controlling the symptom at its central source.

Regulatory References

  1. FDA label for Dextromethorphan (oral capsule)
  2. Dextromethorphan Mechanism of Action (NIH/NCBI)

What side effects are possible with Sisaal?

Possible Side Effects and Safety Information

The official safety information for Dextromethorphan Hydrobromide (Sisaal) is structured by government regulatory authorities (such as the FDA, EMA, and TGA) to communicate the potential risk profile. The adverse reactions are classified by frequency and grouped into System-Organ Classes (SOCs).

Frequency-Classified Adverse Reactions

Adverse reactions that are frequently documented (classified as Common or Uncommon) typically involve the central nervous system and the gastrointestinal tract. These include effects such as drowsiness, dizziness, fatigue, nausea, vomiting, and constipation. These CNS effects may be more apparent at the start of treatment or following a dose increase.

Serious Adverse Reactions and Key Restrictions

Regulatory documentation highlights serious potential safety concerns, often linked to interactions or overexposure:

  • Serotonin Syndrome: This is a documented serious adverse reaction, particularly when Sisaal is co-administered with Monoamine Oxidase Inhibitors (MAOIs). Therefore, Sisaal is contraindicated in patients receiving MAOIs or within 14 days of stopping them.
  • Severe Hypersensitivity: Rare but serious allergic reactions, such as angioedema, are also listed in the safety information.

Population-Specific Safety Considerations

The product labeling includes specific caution notes for particular patient groups:

  • Older Adults (Geriatric Use): Older adults may exhibit increased susceptibility to the CNS effects (e.g., sedation and dizziness).
  • Hepatic Impairment: Caution is recommended in patients with hepatic dysfunction due to potential changes in the drug's metabolism and clearance.
  • Chronic Conditions: Use is discouraged for a persistent cough associated with conditions like chronic bronchitis or emphysema, or for a cough accompanied by excessive secretions (a productive cough).

This framework ensures that the full regulatory safety scope is clearly defined, distinguishing common, expected effects from rare, high-risk constraints.

Overdose and Emergency Response

Ingestion of Sisaal (Dextromethorphan Hydrobromide) beyond the recommended level may result in an overdose that is considered potentially severe and life-threatening by regulatory authorities. Prompt professional evaluation is mandatory for all suspected overdose cases.

Documented Overdose Manifestations

Official labeling describes a range of clinical signs, primarily affecting the Central Nervous System (CNS) and motor control. Documented manifestations may include ataxia, dizziness, somnolence, tremor, nystagmus, agitation, and hallucinations. Gastrointestinal symptoms like nausea and vomiting are also listed. Severe overdose can lead to profound CNS depression resulting in stupor or coma.

Severe Outcomes and Emergency Action

Overdose carries the risk of serious complications, including seizures, respiratory depression, and significant cardiovascular instability such as tachycardia and changes in blood pressure. The official documentation also highlights the risk of Serotonin Syndrome, particularly when the drug is co-ingested with other serotonergic agents. Children are noted to be more susceptible to severe adverse reactions.

Due to these risks, regulatory sources mandate that immediate medical attention must be sought. Contact a Poison Control Center or local emergency services right away. Management procedures include symptomatic and supportive treatment, activated charcoal for recent ingestion, and essential hospital monitoring, including ECG to track cardiac activity. While no specific antidote is known, naloxone may be used in the hospital setting to reverse severe respiratory depression.

Therapeutic Uses of Sisaal

What Sisaal Treats: Main Uses and Benefits

Sisaal is applied across domains where additional symptomatic support is needed in contexts marked by increased discomfort or tension. It is generally relevant for easing symptoms associated with acute or episodic changes, and is commonly used to help manage symptoms related to physical discomfort, systemic imbalance, and heightened physiological activity.

Relieving Sudden Symptom Discomfort

Sisaal is commonly used when symptoms intensify and supportive relief is needed, helping address symptom clusters that may become intense or disruptive. It may help to ease the overall symptom load during acute episodes. The primary uses include situations involving certain distressing symptoms, conditions presenting with acute episodes, and scenarios where short-term symptom stabilization is important.

“It supports the patient during difficult episodes by easing distress and assists with maintaining functional stability.”

Supportive Care in Episodic Conditions

This medicine is applicable in clinical settings involving acute or unstable symptom patterns and conditions characterized by periods of heightened symptoms. It offers symptomatic relief that may help patients cope more steadily with symptom fluctuations, and may contribute to improved day-to-day comfort during symptomatic periods.


Quick Fact: Relief for Sudden Symptom Discomfort

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Sisaal — official regulatory information

Eligibility scope

  • Populations for whom use is allowed (as stated in label): Adults (18+ years); Adolescents and Children 12 years and over (EU standard); Children 4 years and older (US OTC standard).
  • Populations for whom use is contraindicated: Patients taking a Monoamine Oxidase Inhibitor (MAOI) or within 14 days of cessation. Individuals with known hypersensitivity or those at risk of Respiratory Failure (e.g., severe asthma or COPD). Children under 12 years (EU standard).
  • Age-related eligibility rules: Minimum eligible age is 4 or 12 years, depending on the regulatory document. Use is not established for children younger than two years.
  • Condition-specific eligibility rules: Use is restricted for Chronic or Persistent Cough or cough with Excessive Secretions unless directed by a physician. Caution is required for patients with Moderate to Severe Hepatic or Renal Impairment.
  • Pregnancy and lactation eligibility status (if explicitly documented): Safe use is not established for pregnant women; use is conditional on a risk-benefit assessment. Caution is recommended for breastfeeding women; alcohol-containing formulations must be avoided.

Eligibility classifications (high-level)

  • Eligibility severity classification (as defined in official documents): Absolute Contraindication (MAOI use, Respiratory Failure); Conditional Use/Caution Required (Hepatic/Renal Impairment, Chronic Cough); Not Established (Children under 2 years).

Connection to the overall eligibility profile (2–4 sentences): Official regulatory documents define the eligible population for this medicine by strictly prohibiting use based on concurrent medication (MAOIs) and specific disease states (Respiratory Failure) to mitigate serious risks. Eligibility is further limited by mandatory age minimums (ranging from 4 to 12 years) and requires special caution for patients with impaired organ function (liver/kidney) or those with chronic cough conditions.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Sisaal (Dextromethorphan Hydrobromide) is structured around primary pharmacokinetic and pharmacodynamic interaction risks. The most significant restriction is the contraindication with all Monoamine Oxidase Inhibitors (MAOIs), including medicines used for depression or Parkinson's disease. The official labeling requires a mandatory separation period: Sisaal must not be taken during therapy with an MAOI or within 14 days of discontinuing an MAOI.

The drug's systemic exposure is significantly affected by interactions at the Cytochrome P450 2D6 (CYP2D6) enzyme. Co-administration with potent CYP2D6 inhibitors (such as quinidine, fluoxetine, or paroxetine) can inhibit metabolism, resulting in a substantial multi-fold increase in the plasma concentration of Sisaal, which heightens the risk of toxic effects. This metabolic constraint also applies to individuals genetically determined as CYP2D6 Poor Metabolizers, who may experience prolonged effects.

Additional pharmacodynamic interactions are documented with other Serotonergic Agents (e.g., SSRIs, SNRIs), which carry the risk of an additive serotonergic effect. Furthermore, co-administration with other Central Nervous System (CNS) Depressants, including alcohol, may result in additive CNS depression.

Mechanism of Action

How Sisaal Works — Mechanism of Action

The mechanism of Sisaal (Dextromethorphan Hydrobromide) is characterized by its central action on key regulatory pathways in the brainstem, which govern involuntary reflexes. The primary domain of action involves the central nervous system, where the molecule functions as an agonist at the Sigma-1 (sigma1) receptor within the medullary cough center.

This targeted interaction directly initiates a neural cascade that modulates the processing of sensory inputs. The resulting physiological change is an elevation of the cough threshold, representing an increase in the intensity of afferent signaling required for central reflex initiation.

Additionally, the drug further exerts its influence by acting as an uncompetitive antagonist at the NMDA receptor (via its active metabolite, Dextrorphan) and as an inhibitor of the Serotonin and Norepinephrine Transporters (SERT/NET). This multiple-target mechanism alters excitatory and monoaminergic signaling dynamics, supporting the sustained modulation of activity in the reflex pathway. This combined action contributes to the modulation of overactive neural signaling within the pathway.

Dosage and Administration Information

How Sisaal is Used in Clinical Practice

Sisaal, whose active ingredient is Dextromethorphan Hydrobromide, is administered exclusively via the oral route across all its available formulations. The medicine is available in various forms, including immediate-release (IR) syrups, solutions, lozenges, and tablets, as well as extended-release (ER) oral suspensions. The choice of form and precise regimen is determined by the healthcare provider based on standard clinical practice.


Official Dosing and Administration Schedules

Administration follows standardized, fixed-interval dosing protocols. These instructions detail the maximum amount to be taken and the required time between doses. The total daily intake must not exceed 120 mg for any formulation in a 24-hour period.

Administration Pattern Immediate-Release (IR) Formulations Extended-Release (ER) Suspension
Standard Adult Dosing 10 mg to 20 mg every 4 hours, or 30 mg every 6 to 8 hours 60 mg every 12 hours
Maximum Daily Limit 120 mg 120 mg

Usage Context and Duration

Sisaal is intended for short-term use. Guidelines typically indicate that treatment should be discontinued and medical guidance sought if the underlying condition persists for more than seven days. The medicine can be taken with or without food; however, consuming it with food or milk may help minimize potential mild gastrointestinal discomfort.

For liquid preparations, the container should be shaken well before use, and the dose must be measured accurately using a calibrated device provided with the product. Immediate-release solid forms, such as softgel capsules, must be swallowed whole to ensure proper delivery, and should not be crushed, split, or chewed.

Population-Specific Usage Rules

The medicine is not approved for use in children under the age of four years. Lower, age-tiered dosing schedules are utilized for children between 4 and 12 years of age.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Sisaal


Research Evidence for Temporary Cough Relief

Sisaal, whose active ingredient is Dextromethorphan, was studied to explore outcomes related to the temporary relief of non-productive cough. The main body of evidence comes from short-term Randomized Controlled Trials (RCTs). These studies compare Sisaal to a placebo (an inactive treatment). The research was applied in studies examining patient-reported experiences related to acute cough, focusing on outcomes related to physical discomfort.

Researchers examined two main types of outcomes in these trials: objective cough frequency (measured by specialized devices) and patient-reported outcomes describing perceived discomfort. The findings describe patterns observed in the studies, including the monitoring of the irritation level required to start a cough. However, when research examined subjective outcomes like symptom severity, the findings were mixed across different trials.

How Studies Compared Sisaal to Other Treatments and Placebo

Studies comparing Sisaal to an inactive treatment (placebo) used the rigorous framework of RCT designs. The research explored short-term symptom changes, focusing on conditions associated with acute or disruptive episodes, often related to upper respiratory tract infections. Systematic reviews have noted that the placebo effect (symptom changes observed in the inactive treatment group) was reported as significant in the context of acute cough trials.

Study Findings in Specific Age Groups

Sisaal was studied for temporary cough relief in adults and children aged 6 and older. Research was evaluated in children in trials that focused on cough due to episodic or acute changes. These studies contribute to the evidence for use in pediatric populations, but often the sample sizes were modest, and the evidence quality varies across studies.

Long-Term Data and Follow-up Durations

Research efforts have focused mainly on short-term symptom changes. The clinical trials typically observe responses over defined time intervals lasting only three to seven days, which aligns with the expected duration of an acute cough. Because the follow-up durations were limited, long-term effects are not fully established. There is limited information for long-term outcomes, and research has not extensively examined outcomes for chronic, persistent cough conditions.

Key Studies & References

  1. Assessment of antitussive efficacy of dextromethorphan in smoking related cough: objective vs. subjective measures
  2. ADULT LONG LASTING-COUGH RELIEF- dextromethorphan hbr,usp capsule (FDA/DailyMed)
  3. Dextromethorphan: MedlinePlus Drug Information

Frequently Asked Questions (FAQ)

Common questions about Sisaal (FAQ)

Q: How quickly does Sisaal usually start to work?

A: According to official drug information, Sisaal is described as being rapidly absorbed after it is taken orally. The cough-suppressing effects typically begin within 15 to 30 minutes after administration, with the duration of its action lasting for about three to six hours, depending on the specific formulation.

Q: Is it true that Sisaal can interact with common pain relievers?

A: Regulatory documents indicate that Sisaal may interact with certain medicines classified as Central Nervous System (CNS) depressants or Serotonergic Agents. This classification could include some prescription or over-the-counter pain relievers that affect the CNS or serotonin activity. Official regulatory documents define the interaction profile of Sisaal based on its mechanism of action and effects on the central nervous system.

Q: What is the difference between Sisaal and other treatments for [condition Sisaal treats]?

A: Official information classifies Sisaal as a central-acting antitussive, meaning it is specifically designed to stop or suppress the cough reflex. Its documented mechanism is to increase the cough threshold by acting on the cough center in the brain. This is different from other cough remedies, such as expectorants, which work by thinning mucus to make the cough more productive.

Q: Why do some people report feeling [vague side effect like 'foggy'] on Sisaal?

A: Official safety documents list common side effects that affect the central nervous system, which include dizziness, lightheadedness, and drowsiness. These documented effects are often more noticeable when starting treatment. The experience of feeling 'foggy' or mentally impaired may be a description of these expected, officially listed CNS effects.

Q: What happens if Sisaal is stopped suddenly?

A: Sisaal is officially classified as a non-opioid and non-narcotic agent at its therapeutic doses. Because of this classification, it is not associated with the severe withdrawal or dependence issues that occur with classic narcotic drug classes. Regulatory guidance states the medicine is for short-term use and should be discontinued if symptoms persist past seven days.

Q: Is Sisaal available over the counter?

A: The active ingredient in Sisaal (Dextromethorphan) is widely used in many over-the-counter (nonprescription) cough and cold products in the United States and other regions. The medicine is not currently scheduled as a controlled substance under the U.S. Controlled Substances Act.

Q: What are the most common things people misunderstand about Sisaal?

A: A common point of clarification in official literature is that while Sisaal's active ingredient is chemically related to opioids, it is officially classified as a non-opioid and non-narcotic antitussive when taken as directed. Regulatory documents include warnings about the potential for abuse and misuse when taken at doses higher than those recommended.

Q: Where can I find the official patient information leaflet for Sisaal?

A: The official patient information, often labeled as a Medication Guide or Patient Information Leaflet, is contained within the authorized product labeling. This information is filed with government agencies such as the FDA and is available to the public through official public databases like DailyMed.

Q: Is Sisaal safe to use for a long period of time?

A: Sisaal is officially intended only for short-term use to address acute cough. Regulatory labeling advises that treatment should be discontinued if the cough lasts for more than seven days. Research evidence supporting its use is focused on these short-term trials, and its long-term effects are not fully established.

Q: Are there any specific foods or drinks that should be avoided while taking Sisaal?

A: Official regulatory guidance states that Sisaal can generally be taken with or without food. However, consuming large amounts of certain citrus juices, such as grapefruit juice or Seville orange juice, may increase the body's exposure to the medicine due to effects on drug metabolism. Official documentation notes that the intake of these juices may need to be limited.

Q: Is Sisaal considered a 'strong' or 'mild' medication?

A: Official regulatory information classifies Sisaal as a central-acting antitussive. Its cough-suppressing action is described in medical literature relative to other antitussives, maintaining its classification as a non-narcotic agent. It works by regulating the involuntary coughing urge.

Q: Has Sisaal been studied in children or teenagers?

A: Official research and labeling documents include information on the use of Sisaal for temporary cough relief in adults and children aged 6 years and older. The regulatory documents specify minimum age requirements for use, and the product is not approved for use in children under the age of four years.

Q: Is Sisaal habit-forming or addictive?

A: Sisaal is officially classified as a non-opioid and non-narcotic agent at its therapeutic doses, meaning it is not generally considered habit-forming or addictive when used as directed. Nevertheless, official labeling includes explicit warnings about the potential for abuse and misuse when the medicine is taken at much higher than recommended doses.

Q: Are there any common supplements that should not be taken with Sisaal?

A: Regulatory documents warn against taking Sisaal with other Serotonergic Agents, which increase levels of serotonin in the brain. This group can include certain herbal or dietary supplements that are known to affect serotonin levels or influence the drug's metabolism, which could increase the risk of adverse effects.

Q: Is Sisaal more effective if taken with food?

A: Regulatory instructions state that Sisaal may be taken with or without food. Taking the medicine with food or milk is noted in official guidance as a method that may lessen potential mild gastrointestinal discomfort. There is no statement in official product information indicating that taking it with food increases its effectiveness.

Q: Does the dose of Sisaal change based on a person's weight?

A: Official administration schedules define standard adult and age-tiered pediatric doses as fixed-amount and fixed-interval protocols. These dosing instructions do not specify or require an individualized dose adjustment based on a person's weight.

Q: How long does Sisaal stay in the body?

A: The time it takes for the concentration of Sisaal to reduce by half (its half-life) is variable, but it is typically described in medical literature as being approximately 3 to 4 hours in most people. It is primarily metabolized by the liver, and its temporary effects generally last three to six hours.

Q: Are there any lab tests required before starting Sisaal?

A: Pre-treatment lab testing is not universally mandated. However, official regulatory documents define the population groups for which caution is required, such as those with hepatic (liver) impairment or known metabolic differences, including those who are CYP2D6 Poor Metabolizers.

Q: Does Sisaal interact with herbal medicines?

A: The official interactions list focuses on prescription medicines, but some herbal medicines and supplements can affect the same metabolic pathways (CYP2D6) or central nervous system chemicals (serotonin) as Sisaal. Regulatory documents indicate the need for awareness when taking Sisaal with any substance known to be a strong enzyme inhibitor or a serotonergic agent.

Q: Does Sisaal cause changes in mood or behavior?

A: Regulatory safety information lists central nervous system (CNS) effects such as dizziness and drowsiness. Because the drug works by interacting with specific brain pathways, including those related to serotonin, non-serious mood or behavioral changes are occasionally described, but are not frequently listed as common side effects.

Q: What is the general consensus on Sisaal from medical societies?

A: Authoritative public health bodies and medical societies generally recognize Sisaal as an appropriate non-prescription antitussive agent for the temporary relief of a non-productive cough. This consensus aligns with its official regulatory labeling and supported indications.

Q: How does the official literature describe Sisaal's purpose?

A: Official regulatory literature describes Sisaal's purpose as providing temporary relief of coughs caused by common irritants, the common cold, or the flu. It functions by working centrally to decrease activity in the part of the brain that initiates the coughing reflex.

How should Sisaal be stored and disposed of?

How to Store and Dispose of Sisaal?

The storage and disposal of Sisaal (Dextromethorphan Hydrobromide) are governed by strict regulatory requirements to ensure product quality and public safety.

Storage Requirements

Condition Requirement
Temperature Store at Controlled Room Temperature (20°C to 25°C / 68°F to 77°F).
Prohibition The product must not be frozen and should avoid excessive heat (above 40°C).
Protection Keep the medicine protected from light and moisture.
Container Keep the container tightly closed and store in its original packaging.
Child Safety Store the product out of the sight and reach of children.

Disposal Instructions

For unused or expired Sisaal, the official guidance recommends disposal through a drug take-back program when available. If a take-back program is not accessible, the medicine should be mixed with an unappealing substance, sealed in a bag, and placed in the household trash. The product must not be flushed down a toilet or placed into wastewater systems.

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

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