Coldact (ANALGESICS)

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Coldact (ANALGESICS)

Method of action: Analgesic

Treatment option:

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 Coldact (ANALGESICS)

Quick Facts

Property Description
Active ingredient Acetaminophen, Caffeine, Chlorpheniramine Maleate, Pseudoephedrine Hydrochloride
Form Oral preparation (Tablet or Capsule)
Pharmacological class Combination Cold Preparation, Analgesic, Antipyretic, Antihistamine, Decongestant
General use Symptomatic relief of common cold and flu discomforts
Origin Synthetic

What Type of Medicine is Coldact and What Does it Contain?

Coldact is a recognized fixed-dose combination (FDC) drug, classified specifically as a multicomponent preparation targeting the symptomatic relief of common cold and flu symptoms. It provides a four-way multidrug regimen of synthetic active ingredients in a single oral preparation. The formulation includes Acetaminophen, a non-opioid analgesic and antipyretic agent, alongside Pseudoephedrine Hydrochloride, an adrenergic agent acting as a Nasal Decongestant. It also incorporates Chlorpheniramine Maleate, a first-generation H1 Antagonist (antihistamine), and Caffeine, a CNS stimulant. The rationale behind this specific inclusion of four distinct pharmacological classes is clinically recognized for its comprehensive action against diverse cold symptoms.

Coldact’s Pharmaceutical Identity and Differentiation

The drug entity Coldact is designed for the oral route of administration, typically as a tablet or capsule. Its formulation is distinguished from simpler cold remedies by the mandatory inclusion of Caffeine, intended to counteract the sedation often associated with the Chlorpheniramine component, thus maintaining better user alertness. As its active compounds are of synthetic origin, its stability and potency are supported by pharmacological data, ensuring product consistency. The overall identity is that of a Combination Cold Preparation.

What is the General Purpose of This Combination Drug?

The general purpose of this specific combination cold preparation is to offer efficient, holistic relief during acute upper respiratory illnesses. The product's ability to simultaneously address minor aches, fever, nasal swelling (upper respiratory tract congestion), and allergy-like symptoms makes it suitable for scenarios where a patient is experiencing fatigue alongside concurrent symptoms like a runny nose and a mild headache. Research has supported the efficacy of combining decongestants and antihistamines, demonstrating a reliable reduction in nasal discomfort and associated cold symptoms.

What side effects are possible with Coldact (ANALGESICS)?

Possible Side Effects and Safety Information

Adverse effects documented in regulatory labeling for Coldact, a four-component drug, are formally classified by frequency and grouped into System-Organ Classes (SOCs). The safety profile is shaped by the properties of its analgesic, antihistamine, and sympathomimetic components.

Documented Adverse Reactions and Frequency

Adverse effects are categorized based on how often they are observed in clinical use, according to regulatory standards.

Classification Examples of Reactions (SOC)
Common Drowsiness (Nervous System), Dry mouth, Constipation (Gastrointestinal), Insomnia, Nervousness (Psychiatric)
Rare/Very Rare Severe Hepatic Injury, Serious Skin Reactions (e.g., SJS/TEN), Blood Dyscrasias (Hepatobiliary/Immune)

Key Safety Considerations

Serious Adverse Reactions explicitly documented in official labels include the risk of Severe Hepatic Injury associated with the Acetaminophen component, particularly when exceeding the maximum approved dosage over 24 hours. Rare but potentially fatal Serious Skin Reactions, such as Stevens-Johnson Syndrome (SJS), are also noted.

Population-Specific Safety Notes outline restrictions for individuals with certain pre-existing conditions. Use is generally contraindicated in patients with severe uncontrolled hypertension or severe coronary artery disease due to the Pseudoephedrine component. Additionally, individuals with severe hepatic impairment are restricted from use due to the risk associated with Acetaminophen. Older adults may be more susceptible to anticholinergic effects like drowsiness and urinary retention due to the antihistamine component.

Safety Restrictions mandate that use is prohibited if a Monoamine Oxidase Inhibitor (MAOI) has been consumed within the previous 14 days, as documented in regulatory warnings. Severe liver damage may occur if the product is used concurrently with chronic, excessive alcohol consumption.

Overdose and Emergency Response

The official regulatory profile for an overdose of Coldact centers on the dual risk of immediate neurological effects and delayed, severe organ damage.

Immediate medical advice or contacting a Poison Control Center is required right away, even if an individual has no apparent symptoms, due to the critical risk of progressive liver injury from the Acetaminophen component. Prompt medical attention is necessary to prevent potentially fatal hepatic necrosis and acute liver failure, which is a documented severe outcome.

Early manifestations of overdose may include non-specific gastrointestinal symptoms such as nausea, vomiting, and paleness. These can be followed by signs of acute toxicity, including central nervous system effects such as agitation, restlessness, tremors, confusion, and documented severe outcomes like seizures. Cardiovascular effects like tachycardia, palpitations, and blood pressure fluctuations (hypertension or hypotension) are also documented.

Management requires specific procedural steps as directed by healthcare professionals. The specific antidote N-acetylcysteine is officially documented for use in preventing or lessening liver damage. Treatment also involves symptomatic and supportive care for the acute CNS and cardiovascular effects. The risk of severe hepatic injury is specifically noted in regulatory documents to be greater for patients with underlying liver disease. Continuous monitoring of liver and renal function is a required constraint of clinical management.

Therapeutic Uses of Coldact (ANALGESICS)

What Coldact (ANALGESICS) treats: Main Uses and Benefits

Coldact is a multi-symptom medication primarily used to provide supportive relief for the acute manifestations associated with the common cold, flu, and related upper respiratory conditions. It targets specific symptom domains to ease patient discomfort and supports the patient during difficult episodes by easing distress during periods of heightened illness. The medication is used to relieve symptoms like fever, headache, and nasal congestion.

Relief from Systemic Pain and Fever

The medication is commonly used to help with symptoms related to physical discomfort and symptoms related to systemic imbalance, such as headache, muscle pain, body aches, and fever. It is relevant in contexts involving acute or disruptive symptom patterns where symptoms quickly intensify, providing support that helps ease the overall symptom burden.

Management of Respiratory & Sinus Symptoms

Coldact is also applied in addressing symptoms related to inflammatory or irritative states in the nasal and sinus passages. This includes managing runny nose, sneezing, and sinus congestion. By targeting these symptoms that interfere with daily functioning, the medication is relevant for easing discomfort and may assist with maintaining functional stability.


Quick Fact: Relief for Systemic Discomfort

Coldact is relevant for managing symptoms related to physical discomfort, such as pain and fever, offering support when acute manifestations lead to noticeable interference with daily stability.

Regulatory References

  1. Health Canada Guidance document on Non-prescription Cold and Flu Labelling Standards

Eligibility and Restrictions for Use

Eligibility for Coldact (ANALGESICS) — Official Regulatory Information

Official regulatory documents define the population eligible to use Coldact, a combination product, based on explicit exclusions and restrictions tied to its active components.

Absolute Prohibitions

The medicine is strictly Contraindicated for specific patient groups:

  • Individuals with known hypersensitivity to Acetaminophen, Pseudoephedrine, Chlorpheniramine, or Caffeine.
  • Patients who are currently taking or have taken a Monoamine Oxidase Inhibitor (MAOI) within the preceding 14 days.
  • Women who are breastfeeding (Lactation).
  • Patients with severe hypertension or severe coronary artery disease.

Restricted Use and Exclusions

The medicine is approved for adults and children 12 years of age and older. Use is not recommended for children under 12 and is not recommended during pregnancy.

Use requires special caution or medical oversight in patients with conditions such as severe hepatic or renal impairment, glaucoma, diabetes mellitus, hyperthyroidism, or specific types of gastrointestinal or urinary obstruction.

What should I know about interactions with other medicines?

The official regulatory profile for Coldact, a multicomponent drug, details specific limitations on co-administration with other medicines and substances. The most severe constraints involve Monoamine Oxidase Inhibitors (MAOIs), where co-administration is strictly contraindicated due to the risk of severe hypertensive reactions. Regulatory documents mandate a minimum separation period, requiring at least 14 days to elapse between discontinuing MAOI therapy and starting this medication.

Furthermore, it is a mandated restriction that Coldact must not be co-administered with other medicinal products containing Acetaminophen, as this significantly increases the risk of exceeding the safe daily limit and causing hepatotoxicity.

Pharmacodynamic interactions are officially documented with substances that share similar effects on the body. Concurrent use with Alcohol and other Central Nervous System (CNS) Depressants (such as opioids or sedatives) may result in additive CNS depression due to the Chlorpheniramine component. Similarly, combining the product with other Sympathomimetic Agents may result in adrenergic reinforcement, potentially leading to increased heart rate and blood pressure from the Pseudoephedrine component.

Interactions with substances include explicit warnings regarding Alcohol. Official labeling notes that chronic or excessive alcohol use (typically defined as three or more alcoholic drinks per day) increases the risk of Acetaminophen-induced hepatotoxicity. The Acetaminophen component’s use is also restricted in patients with severe active liver disease. These official statements structure the product’s regulatory interaction profile.

Mechanism of Action

Mechanisms Modulating Vascular Tone and Secretion

This mechanism involves a two-part action: agonism at alpha1-adrenergic receptors to constrict small blood vessels in the nasal passages, and antagonism at histamine H1 receptors to block chemical signals that increase blood vessel permeability and trigger excessive fluid secretion. This complementary action modulates signaling within the vascular and secretory systems, resulting in physiological adjustments to mucosal blood flow and fluid output.


Central Pathway Regulation for Nociception and Temperature

The drug engages a separate mechanism by acting as a selective inhibitor of cyclooxygenase (COX) enzymes primarily within the Central Nervous System (CNS), particularly the hypothalamus. This targeted inhibition reduces the synthesis of Prostaglandin E2 ( PGE2), a key mediator that influences the body's internal temperature set point and neural signaling. This mechanism acts on pathways that govern thermoregulation and central nociception.


Integrative Multi-Target Action

The overall effect profile is achieved through the synergistic interaction of these distinct mechanistic domains. The drug's components collectively modulate three separate physiological pathways—vascular stability, secretory response, and central thermoregulation—allowing for simultaneous influence on multiple molecular events that contribute to the drug's overall effect. This multi-target approach engages mechanisms that influence feedback regulation across key systems, creating a systemic change.

Dosage and Administration Information

The administration of Coldact, a four-component oral preparation, is structured entirely by official regulatory guidelines, focusing strictly on a standardized usage protocol.

Administration Scope and Dosage

The oral route (tablet or capsule) is the only approved method for administering Coldact. The standard unit dose for individuals 12 years of age and over is one tablet or capsule. The total intake must not exceed 6 units within a 24-hour period, which serves as the established maximum dose constraint. The medicine is administered on an as-needed (prn) basis with a specific time interval, requiring a minimum of 4 to 6 hours between doses. This frequency pattern is defined for short-term use only, consistent with the management of temporary, acute symptom periods.


Procedural and Population Rules

Official instructions mandate specific procedural steps for administration. The unit dose must be swallowed whole with water and must not be crushed, chewed, or dissolved, to maintain the integrity of the formulation. The standard regimen is confined to adults and adolescents 12 years of age and over. Use in children younger than 12 years is not covered by the standard label, reflecting the regulatory need for explicit caution with multi-component preparations in this population. The overall protocol dictates that administration must strictly adhere to the frequency and maximum daily dose limits specified in the labeling to maintain proper use. This framework constitutes the standardized, label-based approach for the correct use of the medicine.

Recent Clinical Evidence

Research evidence / Overview of studies for Coldact (ANALGESICS)

This overview summarizes the official research evidence for combination cold preparations, focusing on the types of studies conducted, what they examined, and where research remains limited. It is based on reviews from regulatory bodies and peer-reviewed scientific literature.


Evidence for Use in Symptomatic Relief of Cold and Flu

The body of evidence for this combination medication relies on Systematic Reviews and Meta-Analyses from scientific bodies, which draw upon data reported in individual Randomized Controlled Trials (RCTs) and Placebo-Controlled Studies. These studies were used in research exploring how symptoms change over time in conditions involving periods of heightened symptoms, such as the common cold or flu-like syndromes.

Research explored outcomes related to physical discomfort and systemic imbalance, including metrics such as headache, fever, nasal congestion, runny nose, and sneezing. Key metrics used include the Total Symptom Score (TSS) and measures of overall patient-reported improvement, known as Global effectiveness.

While research has explored these short-term symptom changes, the evidence quality varies across studies concerning the specific four-drug combination. Scientific reviews often note that evidence is limited for the combination itself. Findings describe group patterns observed, but the research does not establish whether the measured effect of the combination is distinct from the effects of the individual active ingredients when taken alone.


Study Duration and Follow-up Periods

The nature of the common cold means that research exploring short-term symptom changes is common. Studies focus heavily on acute treatment periods, ranging from immediate, single-dose evaluations over a period of a few hours up to continuous monitoring over several days.

Follow-up durations were therefore typically limited to the expected course of the acute illness. This short-term perspective was observed in some studies exploring episodic symptom patterns and outcomes describing acute changes. As such, the data show patterns related to immediate or rapid changes but do not examine long-term usage.


Evidence in Specific Age Groups and Populations

The clinical research for this combination medication was studied for use primarily in Adults and Older children, generally defined as those 12 years and older. The results apply only to the populations studied.

The available research suggests that data for certain groups remain insufficient. For instance, evidence is limited for using this specific combination in Younger children (under the age of 12). For this group, authoritative scientific reviews have documented that relevant research is generally lacking, which means that the available follow-up durations were limited in these younger populations.


What Remains Unknown or Uncertain in the Research

Official scientific reviews highlight several areas where research is ongoing or where certainty remains low. Research questions explored whether patterns related to all four components simultaneously were measurable, or whether the data show patterns related to one or two of the active ingredients. Research limitation frames note that comparative evidence is lacking in many specific trials.

Furthermore, because Coldact addresses acute, self-limiting conditions characterized by fluctuating or episodic manifestations, long-term effects are not fully established. There is also a lack of data exploring the use of this combination in patient subgroups with specific underlying health conditions, meaning that research provides context on group patterns, but not on individual outcomes for those with complex health profiles.

Key Studies & References

  1. Guidance document: Non-prescription Oral Adult Cough, Cold and Flu Labelling Standard (Health Canada)
  2. Guidance Document: Nonprescription Oral Paediatric Cough and Cold Labelling Standard (Health Canada)

Frequently Asked Questions (FAQ)

Common questions about Coldact (ANALGESICS) (FAQ)


Q: How quickly can someone expect Coldact (ANALGESICS) to start working?

A: Regulatory documents for oral multi-component cold preparations state that the medication is intended to offer prompt relief for acute cold and flu symptoms. However, the official product information does not specify an exact expected onset time in minutes. Individual response patterns are subject to variability.

Q: How long does the effect of Coldact (ANALGESICS) typically last?

A: The official administration guidelines define the dosing interval as every 4 to 6 hours as needed. This time frame is established to maintain drug levels within the specified limits.

Q: Do you have to eat a meal before taking Coldact (ANALGESICS)?

A: Official instructions advise swallowing the whole dose with water. The product information does not strictly mandate that the medicine be taken with a meal or on an empty stomach. Concerns about consumption related to food may be discussed with a health professional.

Q: What types of food or drink might interact negatively with Coldact?

A: The primary official warnings regarding substances focus on avoiding alcohol and other medicines containing Acetaminophen. While specific common food items are not typically listed, the official product information supports discussing major dietary changes or concerns with a health professional.

Q: Can Coldact (ANALGESICS) be taken if I am already taking an antidepressant?

A: Regulatory documents state that this medicine is strictly contraindicated (must not be used) if you are taking a Monoamine Oxidase Inhibitor (MAOI) or have stopped taking one within the last 14 days. For all other classes of antidepressant medication, official guidance supports discussion with a health professional before use.

Q: What does the official guidance say about taking Coldact (ANALGESICS) while pregnant?

A: Official regulatory guidance states that the use of this product is generally not recommended during pregnancy. The label suggests that use during pregnancy should be discussed with a health professional.

Q: Is Coldact (ANALGESICS) suitable for use by children?

A: The product is officially approved for use in adults and children 12 years of age and older. The label specifies that the medicine is not for use in children under 4, and use in children between 4 and 12 years of age requires specific consultation with a health professional.

Q: Can Coldact (ANALGESICS) be taken with alcohol?

A: The official warning indicates that alcoholic drinks should be avoided while using this medicine. Combining Coldact with alcohol may increase the risk of side effects like drowsiness and can also increase the risk of severe liver damage due to the Acetaminophen component if alcohol is consumed excessively and chronically.

Q: Does Coldact (ANALGESICS) interact with herbal supplements?

A: Official regulatory labels focus on interactions with other medicines and alcohol, and do not list every known herbal supplement. General guidance supports discussing the combination of any herbal product or dietary supplement with a health professional.

Q: What should be done if I miss the scheduled time for Coldact?

A: Coldact is typically taken as needed for symptoms. Official labeling does not provide specific instructions for managing a missed dose. Decisions regarding dose timing should adhere to the minimum interval stated on the package.

Q: What are the precautions are generally suggested before using Coldact?

A: General precautions noted in the product labeling reference adherence to maximum dose limits, avoidance of alcoholic drinks, and exercising caution when driving or operating machinery due to the potential for drowsiness.

Q: Can Coldact (ANALGESICS) be crushed or cut in half?

A: Official administration instructions specify that the unit dose should be swallowed whole. Regulatory documents state that the tablet or capsule should not be crushed, chewed, or dissolved, which is necessary to maintain the integrity of the combination formulation.

Q: Does taking Coldact (ANALGESICS) affect driving or operating machinery?

A: The official label includes a warning that caution should be exercised when driving a motor vehicle or operating machinery because drowsiness may occur due to the antihistamine component.

Q: Is Coldact (ANALGESICS) safe to take while breastfeeding?

A: Official guidance states that use during breastfeeding should be discussed with a health professional. Regulatory information indicates that certain active ingredients can pass into breast milk and may potentially reduce milk supply.

Q: What should I do if I notice an unusual skin reaction after taking Coldact?

A: The official label instructs that any sign of a skin reaction, such as skin reddening, blisters, or a rash, warrants immediate discontinuation of the product and urgent medical attention. These reactions could be signs of a rare but severe condition.

Q: Does Coldact (ANALGESICS) have a different active ingredient than Ibuprofen?

A: Yes. Coldact is a combination product containing four different active ingredients: Acetaminophen, Pseudoephedrine, Chlorpheniramine Maleate, and Caffeine. Ibuprofen is an active ingredient in a different class of pain reliever.

Q: Is it possible to take Coldact (ANALGESICS) if I have a sensitive stomach?

A: The official product information does not directly classify the drug's suitability for a 'sensitive stomach.' Constipation is listed as a common side effect, but the drug does not belong to the class of medicines that typically carry strong GI bleeding warnings. Gastrointestinal suitability may be discussed with a health professional.

Q: Is it true that Coldact (ANALGESICS) can affect sleep?

A: Yes, the official label lists both drowsiness and insomnia (sleeplessness) as potential side effects. Regulatory warnings indicate that if sleeplessness occurs, discontinuation of the product and consultation with a health professional are advised.

Q: Is Coldact (ANALGESICS) generally considered safe for older people (seniors)?

A: Official product information does not provide a general safety classification for all older adults. Caution is advised for seniors because they may be more susceptible to side effects like drowsiness. Consultation with a health professional is advised due to potential pre-existing conditions.

Q: Are there any long-term studies available on Coldact (ANALGESICS)?

A: Studies supporting the use of this combination product have focused on acute treatment periods and rapid symptom changes associated with temporary cold and flu symptoms. Since the medicine is intended for short-term, temporary relief, the available research studies do not fully establish the long-term effects of continuous usage.

Q: Is it possible for Coldact (ANALGESICS) to cause headaches?

A: While Coldact is used for headache relief, the official label advises stopping use and consulting a doctor if new symptoms occur. This general warning includes the possibility of a new or worsening headache. Any change in symptoms should be evaluated by a health professional.

Q: Can Coldact (ANALGESICS) be used for managing chronic pain?

A: No. The medicine is officially indicated for the temporary relief of acute symptoms associated with cold or flu. Regulatory documents specify that the product is indicated for temporary relief and is not intended or approved for the management of chronic (long-term) pain.

Q: Is Coldact (ANALGESICS) habit-forming or addictive?

A: The product is not classified as a controlled substance by regulatory bodies, and official labels do not include warnings about habit-forming or addictive potential.

Q: If I feel nausea after taking Coldact, is that a common effect?

A: Nausea is not listed as a common side effect in the product's regulatory documents. The label does note that if symptoms like a sore throat are accompanied or followed by nausea, consulting a doctor is advised.

Q: Are there different strengths or forms of Coldact (ANALGESICS) available?

A: Yes. Regulatory documents show that combination cold preparations of this type are commonly available in different strengths and come in standard forms such as tablets or capsules.

Q: Is it normal to feel a slight buzz or dizziness after taking this medicine?

A: Feeling symptoms like dizziness or nervousness is not considered a normal or expected effect. Dizziness is listed as a symptom that warrants discontinuation of the product and consultation with a health professional, according to the official label.

Q: Are there known allergies related to the ingredients in Coldact?

A: Yes. The product is contraindicated (must not be used) if you have a known allergic reaction or hypersensitivity to any of its active ingredients. The label also warns that severe skin reactions are a documented risk.

Q: Can Coldact (ANALGESICS) be taken alongside common vitamins?

A: Official product information does not list every common vitamin. General guidance supports discussing all dietary supplements and vitamins with a health professional before taking the medication to check for potential interactions.

Q: Does the effectiveness of Coldact wear off over time?

A: Since this medicine is intended for acute, short-term relief of temporary symptoms, regulatory documents do not address the phenomenon of tolerance or whether the effectiveness might wear off with continuous, long-term use.

Q: What is the maximum number of days Coldact (ANALGESICS) is recommended for continuous use?

A: The official label indicates limits for use without consulting a doctor: discontinuation is noted if pain or nasal congestion lasts more than 7 days, or if fever lasts more than 3 days. The medication is intended for short-term use only.

How should Coldact (ANALGESICS) be stored and disposed of?

How to Store and Dispose of Coldact (ANALGESICS)?

Official regulatory guidelines strictly define the storage and disposal of Coldact to maintain the stability of its combination active ingredients.

Storage Requirements

The medication must be stored at controlled room temperature, generally between 20 C and 25 C (68 F and 77 F), and must be stored below 30 C.

It must be protected from excessive moisture and heat, and should not be stored in high-humidity areas. To maintain product integrity and safety, the medicine must be kept in its original container, which must be kept tightly closed, and stored out of the sight and reach of children.

Disposal Instructions

Unused or expired product should preferably be discarded through a community drug take-back program. If this is unavailable, the medicine must be mixed with an unappealing substance (such as used coffee grounds or dirt), sealed in a bag or container, and then placed in the household trash. The medication must not be flushed down the toilet or poured into a sink unless the label explicitly instructs to do so.

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

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