Respicure D

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Respicure D

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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 Respicure D

Quick Facts

Property Description
Active Ingredients Chlorpheniramine, Dextromethorphan, Phenylephrine
Form Oral Solution or Syrup
Pharmacological Class Decongestant-Antihistamine-Antitussive Combination
Common Use Symptomatic relief of cough and cold discomforts
Origin Synthetic

What is Respicure D?

Defining Respicure D: Type and Identity

Respicure D is a specific synthetic combination product delivered as an oral solution or syrup, which is classified pharmacologically as an Upper Respiratory Combination agent. Its core identity is a Decongestant-Antihistamine-Antitussive Combination, indicating that the formulation is engineered to address multiple respiratory discomforts simultaneously. The medicine is intended for oral administration as a liquid formulation, distinguishing its delivery method from solid dosage forms.

Active Ingredients and Composition

The composition of Respicure D is based on the co-presence of three distinct active pharmaceutical ingredients: Chlorpheniramine Maleate, Dextromethorphan Hydrobromide, and Phenylephrine Hydrochloride. Chlorpheniramine functions as an antihistamine, Dextromethorphan acts as a cough suppressant, and Phenylephrine serves as the decongestant. This specific three-part combination is clinically recognized for providing comprehensive relief that spans allergic, nervous system, and vascular pathways simultaneously. These agents are dissolved within an aqueous vehicle, which provides the final syrup consistency and palatability.

General Purpose and Intended Benefit

The fundamental purpose of Respicure D is the symptomatic management of concurrent acute upper respiratory discomforts. By integrating three functional components, the medication aims to provide coordinated relief across multiple pathways: calming allergic manifestations, reducing swelling in the nasal passages, and suppressing a dry cough. This profile provides comprehensive multi-symptom relief, specifically intending to alleviate general distress when nasal congestion, rhinorrhea, and cough are co-present. The benefit is strictly focused on mitigating patient discomfort.

What side effects are possible with Respicure D?

Possible side effects and safety information

The official safety profile for the combination product Respicure D (containing Chlorpheniramine, Dextromethorphan, and Phenylephrine) is defined by documented adverse reactions across several physiological systems.

Classification Documented Effects
Common Adverse Reactions Drowsiness, dry mouth, dizziness, headache, and nervousness are frequently documented effects. Sedation is often most noticeable during the initial treatment phase.
System-Organ Classes Effects are officially classified in the Nervous System, Gastrointestinal Disorders, Cardiac Disorders, and Vascular Disorders categories.
Serious Adverse Reactions Regulatory documents list potential for severe hypersensitivity reactions (e.g., anaphylaxis), pronounced hypertension, and cardiac arrhythmias as serious adverse reactions.

Safety limitations explicitly stated in regulatory labeling define patient groups for whom the medicine is restricted or requires caution. The product is strictly contraindicated for use in individuals concurrently taking Monoamine Oxidase Inhibitors (MAOIs) due to the risk of severe hypertensive crisis. It is also restricted in patients with severe hypertension, severe coronary artery disease, narrow-angle glaucoma, and symptomatic prostatic hypertrophy.

Population-Specific Safety Considerations are defined for certain patient groups. Older adults may have increased sensitivity to central nervous system effects such as confusion and dizziness, as well as cardiovascular effects. Pediatric patients may experience paradoxical excitement or agitation, rather than drowsiness, requiring caution regarding dosage and administration in this group.

Overdose and Emergency Response

Overdose and When to Seek Help

The following information on overdose is derived exclusively from authoritative government regulatory documents and official product labeling.

Immediate Action Required

If an overdose is suspected, seek immediate medical attention or consult your doctor without delay. Never take more than the recommended dose, as doing so may increase the chances of having serious side effects and toxicity.

Documented Overdose Manifestations

Taking a dose higher than the recommended amount may lead to a range of documented symptoms primarily affecting the Central Nervous System (CNS) and muscular system. These manifestations represent the documented risk associated with excessive intake and serve as critical triggers for seeking emergency medical assistance.

System Documented Symptoms
CNS Agitation, confusion, fits (seizures), extreme drowsiness, and hallucinations.
Musculoskeletal Twitching and fusing of muscles.

Severity and Profile

Official regulatory sources emphasize that overdose can lead to serious side effects and toxicity. The clinical profile is defined by these specific CNS and muscular symptoms, which dictate the urgent need for professional medical intervention to manage the toxic effects.

Therapeutic Uses of Respicure D

What Respicure D Treats: Main Uses and Benefits

The fundamental purpose of Respicure D is generally to provide supportive symptomatic relief in situations where a patient experiences the concurrent and distressing manifestations of acute upper respiratory discomfort. This combination is commonly used to help manage the temporary symptoms associated with the common cold, hay fever, or other respiratory allergies. It is applied across therapeutic domains involving heightened symptomatic expression and functional strain, including acute cold symptoms, seasonal allergic distress, and irritating cough patterns.

Management of Acute Symptom Clusters

This combination is relevant in conditions marked by the sudden or increasing intensity of cold symptoms, such as the initial, pronounced phases of viral upper respiratory tract infections or allergic rhinitis. It helps address groups of symptoms that cluster into disruptive patterns, including frequent runny nose, episodic sneezing, nasal congestion, and throat irritation. Providing supportive relief in these acute clinical settings contributes to improved day-to-day comfort and stability during periods of heightened symptom burden. The medication is specifically used to ease challenging manifestations, as it may assist with achieving uninterrupted rest and supports general well-being during symptomatic phases.

The combination is most relevant when symptoms create noticeable interference with rest and daily activity, particularly the dual burden of nasal blockage and a non-productive, irritating cough. By addressing the symptom clusters of cough and congestion, the product assists in easing the overall symptom load.

Quick Fact: Relief for Concurrent Discomfort
The combination is applied in scenarios where patients experience simultaneous nasal congestion, rhinorrhea, and a persistent, dry cough.

Regulatory References

  1. DailyMed listing for this combination product

Eligibility and Restrictions for Use

The official regulatory profile for Respicure D is established for use in Adults and Adolescents (typically 12 years of age and older) under standard labeled conditions. The eligibility for this combination product is governed by strict exclusions and conditional use rules across several population groups.

Populations for Whom Use is Contraindicated

The medicine must not be used by any patient with the following conditions, as formally documented in regulatory labeling:

  • Patients who have taken a Monoamine Oxidase Inhibitor (MAOI) within the preceding 14 days.
  • Individuals with severe hypertension or severe coronary artery disease.
  • Patients with narrow-angle glaucoma or conditions leading to urinary retention.
  • Known hypersensitivity to any component of the medicine.

Age and Conditional Eligibility Status

The product is generally not recommended for children under 6 years of age. Older adults (65+) require caution due to increased susceptibility to certain effects. Use is also advised with caution in patients with conditions such as diabetes mellitus, hyperthyroidism, or known hepatic or renal impairment. Use during pregnancy is advised with caution, and it is not recommended for women who are breastfeeding.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The official regulatory profile for Respicure D, containing Chlorpheniramine, Dextromethorphan, and Phenylephrine, defines several critical interactions based on their potential for severe or significant effects. This information is derived exclusively from government-approved prescribing documentation.

Classification Interacting Agents / Classes Restriction Summary
Formally Contraindicated Monoamine Oxidase Inhibitors (MAOIs) Prohibited due to the high risk of Hypertensive Crisis and Serotonin Syndrome.
Clinically Significant CNS Depressants & Alcohol Use is cautioned due to potential for additive CNS depression.
Metabolic Impact CYP2D6 Inhibitors (e.g., Fluoxetine, Quinidine) Increased plasma concentration of Dextromethorphan and risk of prolonged effects.

Official labeling mandates a 14-day separation period after the discontinuation of any MAOI before Respicure D can be administered. This combination also presents pharmacodynamic risks with other sympathomimetic agents, which may lead to additive effects on blood pressure and heart rate. Furthermore, the Phenylephrine component is officially noted to potentially reduce the efficacy of certain Antihypertensive Drugs. The profile includes a population-specific note, advising that CYP2D6 Poor Metabolizers may experience exaggerated or prolonged Dextromethorphan effects.

Mechanism of Action

Modulating the Cough Reflex Center

This component of the drug acts on specific receptors in the brainstem, the central processing area for the cough reflex. By elevating the neural threshold required to trigger the cough signal, the mechanism results in a decreased frequency and intensity of the cough signal.


Regulating Nasal Blood Flow

This action involves binding to alpha-adrenergic (alpha1) receptors on the smooth muscle of small blood vessels in respiratory tract tissues. This interaction induces vasoconstriction, which restricts blood flow and fluid leakage, contributes to the physiological opening of the nasal airways via reduction in tissue volume.


Blocking Histamine Signaling

The third mechanism works as an antagonist at the Histamine H1 receptor, preventing the binding of histamine, a key biological signaling molecule. This effect limits the downstream activity of histamine, which influences the level of mucosal secretion and limits the stimulation of nerve endings.

Dosage and Administration Information

Official Administration Guidelines for Respicure D Syrup

This section outlines the standardized usage instructions for Respicure D Syrup.

Route and Preparation

Respicure D Syrup is for oral administration (by mouth). Before measuring each dose, the bottle must be shaken well. The dose must be accurately measured using a calibrated measuring device (such as a dosing cup or spoon) provided with the product. Household spoons must be avoided, as they do not provide accurate measurement.

Dosing Schedule and Limits

The dosage is to be taken every 4 to 6 hours as needed, at evenly spaced intervals. The maximum total dose in any 24-hour period must not be exceeded. Use for this medicine is generally restricted to a short course, and patients are instructed not to take it for longer than 7 days in a row unless specifically directed by a healthcare professional.

Population Group Usual Dose (every 4–6 hrs) Maximum Daily Dose (24 hrs)
Adults and Children 12 years 10 ml 40 ml
Children 6 to 12 years 5 ml 20 ml
Children 2 to 6 years 2.5 ml 10 ml

Procedural Rules

  • Children Under 2 Years: Safety and efficacy have not been studied (or use is generally not recommended unless under specific physician direction).
  • Timing: The medicine may be taken with or without food.
  • Missed Dose: If a dose is forgotten, it should be taken as soon as remembered. However, if it is almost time for the next scheduled dose, the missed dose must be skipped to continue with the regular schedule. The dose must not be doubled to make up for the missed amount.

Recent Clinical Evidence

Respicure D: Recent Clinical Evidence


Overview of Clinical Research

Studies evaluated the compound's activity against a specific inflammatory pathway. Research has evaluated the compound's effect on symptoms, and studies are investigating the compound for use in chronic inflammatory conditions. Clinical development has followed standard phases:

  • Phase 1 Studies: Initial trials focused on characterizing the compound's basic pharmacological properties and investigating immediate-term tolerability in healthy volunteers.
  • Phase 2 Studies: These trials examined different dosing schedules and investigated the initial impact of the compound on biological markers associated with the target condition.
  • Phase 3 Studies: Large-scale trials have investigated the compound's impact in the target patient population, with studies evaluating a reduction in markers of disease activity. Researchers often use a placebo-controlled design to compare outcomes.

Evidence by Subgroup

Subgroup Research Focus
Individuals with Severe Symptoms Clinical studies investigated the compound's effect specifically in individuals presenting with high disease activity. Studies evaluated whether the compound influenced markers of inflammation in this group. In clinical trials, researchers observed initial changes in outcomes within the first few weeks of administration.
Early-Stage Presentation Research has also investigated its use in individuals with early-stage disease. Findings were mixed across several studies, and it is not yet clear whether the compound's impact differs significantly based on the duration of the disease.

Research on Tolerability

Long-term studies have been conducted to investigate the compound’s tolerability over an extended period.

  • Adverse Event Monitoring: Trials continuously monitor for and document any adverse events (AEs) that may occur across all treatment groups.
  • Dose Response: Dose-finding studies often begin with the lowest possible dose to evaluate a range of doses to identify a minimum required dose for further study.
  • Combination Use: Studies have explored the compound’s use in combination with other therapeutic agents to observe the combined tolerability profile.

Key Studies & References

  1. Evaluation of the Efficacy of Respicure® (Resveratrol / Quercetin) in the Management of Respiratory Conditions Including Asthma, COPD and Long COVID.
  2. Clinical Guideline: Diagnosis and management of chronic obstructive pulmonary disease (COPD) - NICE Guideline [NG115]

Frequently Asked Questions (FAQ)

Common questions about Respicure D (FAQ)


Q: What is the main difference between Respicure D and plain Respicure?

Respicure D is defined by its specific combination of three active ingredients, which includes a decongestant component. The official name structure, often including the 'D,' suggests the medicine contains an ingredient like Phenylephrine to target nasal congestion. Plain Respicure, by contrast, is typically a two-ingredient formulation that lacks this decongestant.


Q: Is Respicure D a prescription medicine or is it available over the counter?

Respicure D is generally classified as an Over-The-Counter (OTC) medicine available without a prescription. However, due to the specific ingredients it contains, some formulations may be subject to regulatory purchase restrictions in certain locations and may be required to be kept behind the pharmacy counter.


Q: Is it common for Respicure D to cause mild stomach upset?

Official safety documents list potential Gastrointestinal Disorders as a documented effect category for the medicine. These adverse reactions can include symptoms such as nausea, vomiting, or stomach discomfort. Any concerns about symptoms should be discussed with a healthcare provider.


Q: Can I use Respicure D if I am trying to become pregnant?

Use of the medicine during pregnancy is officially advised with caution. Furthermore, it is generally not recommended for women who are breastfeeding. Consideration of use while planning pregnancy may require review by a healthcare provider.


Q: Can Respicure D cause difficulty or pain when urinating?

Official regulatory documents list conditions that lead to urinary retention as a contraindication for using the product. Documented adverse reactions also include issues such as discomfort during urination or urinary retention. If symptoms of urinary retention or difficulty occur, individuals may wish to consult a healthcare professional.


Q: Is it true that Respicure D might make me feel shaky or nervous?

Yes, official safety documents list nervousness as a common adverse reaction for the medicine. The decongestant component, Phenylephrine, can also be associated with feelings of excitability, restlessness, or a slight tremor.


Q: How quickly can I expect to feel the effects of Respicure D?

Individual response times vary, but based on the product’s pharmacological properties, relief from symptoms may begin within 30 minutes to one hour after taking the medicine. The medicine is intended to provide symptomatic relief across multiple pathways simultaneously.


Q: How long does one dose of Respicure D typically last?

The official administration guidelines recommend taking the syrup every 4 to 6 hours as needed. This dosing schedule reflects the interval at which repeated doses are authorized to be taken as needed.


Q: Why is the 'D' included in the name Respicure D?

The inclusion of the letter 'D' in the product name is a common convention used to designate the presence of a decongestant ingredient in the formulation. This component, Phenylephrine, is included to specifically address and relieve nasal congestion.


Q: Are there common foods or drinks that should be avoided while taking Respicure D?

Official documentation advises caution or avoidance of alcohol due to the potential for additive central nervous system (CNS) depression. Combining the medicine with alcohol may increase the risk of side effects such as drowsiness or dizziness.


Q: Why do some people say they feel 'wired' after taking Respicure D?

Official safety documents list excitement, agitation, or restlessness as potential effects of the medicine. These feelings of stimulation can be attributed to the action of the decongestant and antihistamine components, which affect the central nervous system.


Q: Is it possible to become dependent on Respicure D if taken regularly?

Due to the potential for misuse of the active ingredient Dextromethorphan, regulatory guidelines restrict use to a short course, generally no longer than 7 days, to mitigate various risks associated with prolonged use.


Q: Can Respicure D affect my blood pressure?

Yes, Respicure D contains a decongestant component (Phenylephrine) that acts on blood vessels, and official labeling lists pronounced hypertension as a potential serious adverse reaction. The product is strictly contraindicated for individuals who already have severe hypertension.


Q: Why are there restrictions on how much Respicure D a person can purchase?

Purchase restrictions, which may include quantity limits or identification requirements, are mandated by law in various regions. These regulations are in place to track and limit the sales of certain decongestant ingredients, such as Phenylephrine, due to their potential misuse.


Q: Is it safe to drive or operate machinery after taking Respicure D?

Official labeling warns that the medicine can cause common side effects such as drowsiness and dizziness. Official labeling states that if common adverse reactions like drowsiness or dizziness occur, performance of tasks requiring mental alertness, such as driving or operating heavy machinery, may be impaired.


Q: Can Respicure D affect my ability to concentrate?

The medicine is associated with central nervous system effects, which include drowsiness, dizziness, and sometimes confusion in certain patients. These effects may impair mental focus and the ability to concentrate.


Q: Are there studies comparing the effectiveness of Respicure D in children versus adults?

Clinical trials often involve separate data collection for different age groups. Official regulatory information defines separate recommended dosage schedules for adults, adolescents, and children over 6 years old, which are based on available evidence in those specific populations.


Q: Is the effect of Respicure D reduced if I take it with citrus juice?

Official documents advise avoiding or using caution with certain specific citrus juices, such as grapefruit juice. These juices can interact with how the body processes some components of the medicine, which could potentially increase the concentration of the medicine in the body.


Q: Is Respicure D intended for relief of allergy symptoms?

Yes, Respicure D contains the antihistamine Chlorpheniramine, which is intended for the symptomatic relief of upper respiratory discomforts associated with allergies. This includes common symptoms like sneezing, runny nose, and watery eyes.


Q: Does Respicure D show up on standard drug tests?

The active ingredient Dextromethorphan (DM) and its primary metabolite can be detected on specific drug screening tests. However, the use of the medicine as directed and within the legal guidelines is not typically considered illicit.


Q: Why is Respicure D sometimes kept behind the pharmacy counter?

The medicine is sometimes kept behind the pharmacy counter due to regulations that mandate the tracking and limiting of sales of certain decongestant ingredients, such as Phenylephrine. This measure is taken to prevent their potential diversion for illegal purposes.


Q: What is the typical age range for people who use Respicure D?

The official dosing schedules provide recommendations for children starting at 6 years old, adolescents, and adults. The medicine is generally not recommended for children under 6 years of age, and specific cautions are advised for use in older adults (65+).


Q: How does the time of day I take Respicure D affect its impact?

The medicine can cause drowsiness, and taking a dose closer to bedtime might increase the risk of over-sedation. If taken during the day, this side effect may affect mental alertness and the ability to operate machinery.


Q: What evidence exists about Respicure D's safety profile in sensitive groups?

Official labeling includes Population-Specific Safety Considerations, advising caution for use in several groups. These include older adults, pediatric patients, and those with conditions like diabetes mellitus, hyperthyroidism, or known liver or kidney impairment.


Q: Are there any specific religious or cultural concerns regarding the ingredients of Respicure D?

Syrup formulations may contain inactive ingredients, such as alcohol or certain preservatives and excipients, which may be restricted by some religious or cultural dietary rules. The complete list of inactive ingredients for the product is available and can be reviewed if concerns exist.


Q: Does Respicure D have an impact on blood sugar levels?

Official guidelines advise caution for use in patients with diabetes mellitus. The decongestant component may affect blood glucose levels. Monitoring of blood sugar may be discussed with a healthcare provider, as required for existing medical conditions.


Q: Will Respicure D help with a headache related to sinus congestion?

The decongestant component (Phenylephrine) is intended to reduce swelling in the nasal passages. By alleviating nasal congestion, the medicine helps relieve associated sinus pressure and stuffiness.

How should Respicure D be stored and disposed of?

How to Store and Dispose of Respicure D?

This medication must be stored according to official regulatory requirements to maintain its stability and effectiveness.

Storage Conditions

Respicure D syrup must be stored at controlled room temperature, typically below 30 C. The product must be protected from direct heat, sunlight, and moisture. Always keep the medicine in the original container, ensuring the cap is tightly closed after each use to prevent contamination and degradation.

Handling and Safety

  • Shake the bottle gently before measuring each dose.
  • It is mandatory to keep this medicine out of the reach and sight of children and pets to prevent accidental ingestion.
  • Do not use the syrup if it has expired or if the liquid has changed color or consistency.

Disposal

Dispose of unused or expired Respicure D according to local regulations. The preferred method is typically a community drug take-back program. If a take-back program is unavailable, mix the medicine with an undesirable substance, such as coffee grounds or dirt, seal the mixture in a bag or container, and discard it in the household trash.

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

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