Kutub

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Kutub

Method of action: Urologicals

Treatment option:

Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Kutub

Property Description
Active ingredient Dapoxetine
Form Film-coated tablet
Pharmacological class Selective Serotonin Reuptake Inhibitor (SSRI)
General purpose Symptomatic management of Premature Ejaculation (PE)
Origin Synthetic

Defining Kutub: Its Core Identity and Pharmacological Class

Kutub is a prescription-only medicine (Rx) identified by its core active ingredient, Dapoxetine, which belongs to the pharmacological class of Selective Serotonin Reuptake Inhibitors (SSRIs). This classification affirms its identity as a synthetic psychotropic agent designed specifically for short-term use in adult males. Dapoxetine is distinct from traditional SSRI analogues like Fluoxetine or Paroxetine because it functions as a short-acting SSRI, a profile that is recognized for its suitability in on-demand symptomatic therapy. This rapid action establishes its therapeutic purpose as an acute agent for the symptomatic management of a specific ejaculatory dysfunction, rather than as a general treatment for chronic mood disorders.

Composition, Form, and General Therapeutic Purpose

The medication is a single-ingredient product presented as a film-coated tablet intended for oral administration. The composition fundamentally consists of the active ingredient, Dapoxetine (often formulated as the hydrochloride salt), integrated with necessary solid pharmaceutical excipients. This standardized solid dosage form is designed for convenient and discreet delivery, ensuring a measurable entry of Dapoxetine into the body. The general purpose of the product is centered on supporting adult males with persistent or recurrent Premature Ejaculation (PE) by providing symptomatic control over the reflex. This confirms that the medication is designed to provide rapid support for men experiencing this condition.

Core Action Principle (Patient-Friendly Summary)

The action of Dapoxetine involves a rapid, temporary adjustment of the neurotransmitter Serotonin levels in the Central Nervous System (CNS). Dapoxetine functions to selectively block the reuptake of Serotonin, acutely raising its concentration at nerve synapses. This transient neurochemical effect directly leads to the extension of the ejaculatory reflex latency. This specific action principle is what enables the medication to serve its purpose as a symptomatic control agent for the reflex, offering a focused approach to managing ejaculatory dysfunction.

What side effects are possible with Kutub?

Adverse Reaction Scope

Adverse reactions associated with Dapoxetine (Kutub) are officially classified by the frequency of occurrence in clinical studies, with effects primarily documented in the Nervous System and Gastrointestinal system.

Frequency Classification Examples of Documented Adverse Reactions (SOC)
Very Common (ge 1/10) Nausea, Dizziness, Headache
Common (ge 1/100 to < 1/10) Insomnia, Anxiety, Somnolence, Diarrhoea, Dry mouth, Fatigue
Uncommon (ge 1/1000 to < 1/100) Syncope (fainting), Orthostatic hypotension, Tachycardia, Confusion, Decreased libido

Serious Adverse Reactions and Safety Constraints

A key serious adverse reaction documented in regulatory texts is Syncope, defined as a loss of consciousness often associated with a vasovagal response. This risk is noted to be higher during the first three hours after dosing and particularly after the initial dose. Due to the medication's pharmacological class, the risk of Serotonin Syndrome is also a documented safety concern, particularly when the medicine is co-administered with other serotonergic agents.

Official regulatory documents stipulate several contraindications that restrict its use:

  • Hepatic Impairment: Contraindicated in patients with moderate and severe hepatic impairment.
  • Cardiac Conditions: Contraindicated in individuals with certain pathological cardiac conditions, such as heart failure (NYHA Class II–IV) and significant conduction abnormalities.
  • Drug Interactions: Contraindicated with Monoamine Oxidase Inhibitors (MAOIs), Thioridazine, and potent CYP3A4 inhibitors (e.g., Ketoconazole, Ritonavir).

Safety is not established for children, adolescents, or older adults (age 65+), and the medication is not indicated for these populations.

Connection to the Official Safety Profile

The regulatory safety structure distinguishes between the expected, non-serious side effects, which are mainly neurological and gastrointestinal, and the specific risk of syncope, which is linked to initial exposure. This framework mandates strict constraints on use related to pre-existing heart conditions and liver function, which define the official safety boundaries for the medication.

Overdose and Emergency Response

Overdose and when to seek help

This section outlines the officially documented manifestations of Kutub (Dapoxetine) overdose and the required emergency actions, as established by governmental regulatory authorities.

Documented Overdose Manifestations

Based on pharmacological studies and the drug's classification as a Selective Serotonin Reuptake Inhibitor (SSRI), high exposure may result in central nervous system and cardiovascular effects. The officially documented manifestations include:

System Documented Signs/Symptoms
CNS Somnolence (sleepiness), Tremor, Agitation, Dizziness
Gastrointestinal Nausea, Vomiting
Cardiovascular Tachycardia (fast heart rate)

Required Emergency Actions

If an overdose is suspected, it is mandatory to seek immediate medical attention. The official regulatory guidance for managing a dapoxetine overdose states that no specific antidotes are known. Treatment must therefore rely on standard supportive measures adopted as required to address the patient’s clinical presentation.

Certain procedural measures are officially deemed unlikely to be beneficial due to the drug’s properties, including dialysis, hemoperfusion, and forced diuresis.

Therapeutic Uses of Kutub

Kutub is commonly used across domains where short-term symptomatic assistance is needed to address a specific form of male ejaculatory dysfunction in adult men. Its relevance to therapeutic management is noted in conditions involving recurrent or episodic symptomatic patterns, particularly when associated with a clinically short ejaculatory latency time (IELT).

The medication may be applied in clinical settings that involve acute or unstable symptom patterns, helping address symptom clusters that may become intense or disruptive, such as the poor control over the ejaculatory reflex and short IELT. The main conditions it is relevant for include lifelong (primary) PE and acquired (secondary) PE. This application supports easing the overall burden of symptoms related to physical discomfort.

“The use of this medication may help patients by supporting a sense of control and contributing to easing the burden of performance-related anxiety.”

The primary therapeutic benefit of Kutub contributes to the extension of ejaculatory latency, which may also support the patient's subjective sense of control during sexual activity. By managing the physical manifestation of poor control, the medication may support patients experiencing marked personal distress and interpersonal difficulty. This offers symptomatic relief that may assist with maintaining functional stability and supports the patient during difficult episodes by easing distress associated with the symptoms.


Quick Fact: Relevant for managing Short Ejaculatory Latency

Regulatory References

  1. UK National Institute for Health and Care Excellence (NICE)

Eligibility and Restrictions for Use

Who Can and Cannot Use Kutub?

This section summarizes the official eligibility and non-eligibility criteria for Kutub, as defined by regulatory authorities.

Kutub is officially approved for use only in Adult Men aged 18 to 64 years.


Absolute Contraindications (Must Not Use)

Use of Kutub is strictly contraindicated (prohibited) for the following populations and conditions:

  • Patients with documented significant pathological cardiac conditions, including heart failure (NYHA class II-IV) or major conduction abnormalities.
  • Patients with moderate and severe hepatic impairment (Child-Pugh Class B and C).
  • Individuals with a history of mania or severe depression.
  • Patients currently taking Monoamine Oxidase Inhibitors (MAOIs), Thioridazine, or potent CYP3A4 inhibitors.
  • Known hypersensitivity to the active ingredient, Dapoxetine.

Restricted and Non-Recommended Use

Use is not recommended in several populations where safety or efficacy data are insufficient or risks are increased:

  • Individuals under 18 years of age or men 65 years of age and over.
  • Patients with severe renal impairment.
  • Patients with a history of serious psychiatric disorders (e.g., schizophrenia, bipolar disorder) or epilepsy.

Use is not indicated for females, including during pregnancy or breastfeeding.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The interaction profile for Kutub outlines mandatory constraints regarding concurrent use with specific medications and substances, as detailed in regulatory documents.

Contraindicated and Restricted Combinations

Official labeling requires avoidance of Kutub with certain medicines due to the potential for clinically significant interactions. The most stringent restriction is the contraindication of concurrent use with Monoamine Oxidase (MAO) inhibitors, which are medications primarily used for depression. This restriction is based on the mechanism of action, which can lead to excessive effects if combined with other agents affecting the same neurotransmitter systems.

Additionally, the use of Kutub must be restricted with other medicines used for depression, although specific drug names beyond MAO inhibitors are not always explicitly listed. The consumption of alcohol is also restricted; official documentation advises against co-ingestion due to the increased risk of pronounced drowsiness and calmness.

Constraints Based on Patient Status

The official profile also dictates specific usage constraints related to a patient’s medical status. Kutub is not recommended for use in patients diagnosed with severe kidney disease or those with moderate to severe liver disease. These conditions are cited in regulatory documentation as influencing the product's safe use and clearance. Furthermore, the product is not to be taken more frequently than once every 24 hours to maintain a safe blood concentration profile and avoid interaction-related accumulation.

Mechanism of Action

Molecular Action: Selective Serotonin Reuptake Inhibition

The mechanism begins with the Dapoxetine molecule acting as a selective Serotonin Reuptake Inhibitor ( SSRI). It primarily targets the Serotonin Transporter ( SERT) in the Central Nervous System ( CNS), blocking the reuptake of the neurotransmitter Serotonin ( 5-HT). This action results in an acute increase in the concentration of 5-HT available to activate postsynaptic receptors.


Systemic Effect: Modulation of Central Inhibitory Pathways

The resulting surge in 5-HT strengthens descending inhibitory pathways originating in the brainstem, which primarily utilize receptors like the 5-HT 2C subtype. This strong inhibitory signal travels down to the spinal ejaculatory generator—the reflex center. The physiological consequence is an elevation of the reflex threshold, which contributes to the regulation of the timing of the reflex.


Mechanism Constraints and Receptor Variability

The overall operation of this acute mechanism is influenced by inherent genetic variability in the density and function of both the SERT and 5-HT receptors across neural pathways. This heterogeneity can constrain the degree to which the inhibitory signal is strengthened, affecting the magnitude of the resulting modulation of the reflex threshold.

Dosage and Administration Information

Official Administration Guidelines for Kutub

The following instructions for the use of Kutub (containing Dapoxetine, and in some forms, Sildenafil) describe the standard method of administration.

Official Dosing and Route

Administration Detail Official Instruction
Route of Administration Oral (by mouth) as a tablet.
Official Dosing Rules The tablet is taken as needed. It is not intended for continuous daily use.
Timing and Frequency Should be taken approximately 1 to 3 hours before anticipated sexual activity. Do not take more than one tablet in a 24-hour period.

Preparation and Specific Conditions

The tablet must be swallowed whole with a full glass of water. It should not be crushed, cut, or chewed, as this can affect how the medicine works. The tablet may be taken with or without food. However, consuming large amounts of alcohol or grapefruit/grapefruit juice is generally advised against due to potential interactions.

Procedural Steps

  1. Take the prescribed dose approximately 1–3 hours prior to anticipated activity.
  2. Swallow the tablet whole with water.
  3. Do not repeat the dose within 24 hours.

Missed Dose

Since this medicine is used only as needed, the likelihood of a missed dose is low. No additional procedural steps are defined for a missed dose because it is not a scheduled daily treatment.

Recent Clinical Evidence

Research Evidence Overview for Kutub


Evidence for use in Premature Ejaculation (PE)

The research exploring this medicine was studied for Premature Ejaculation (PE), a condition characterized by functional limitations related to the ejaculatory reflex. Research examined this condition primarily through large-scale, placebo-controlled Randomized Controlled Trials (RCTs). These studies included adult men with a diagnosis of either lifelong or acquired PE. The body of evidence has been further collected and reviewed in systematic analyses and meta-analyses. The findings describe patterns observed in these core studies over defined time intervals, typically lasting between 12 and 24 weeks.

Primary Measures Used in Clinical Trials

Research evaluated outcomes using two distinct types of measurements. One type of outcome was studied for IELT (Intravaginal Ejaculatory Latency Time), which is an objective time measurement recorded by a stopwatch. This measure was used in research exploring short-term symptom changes. The second type of outcome involves Patient-Reported Outcomes (PROs), which are applied in studies examining patient-reported experiences. These PROs capture outcomes related to physical discomfort and satisfaction, such as the man’s reported sense of perceived control. Research monitored and reported how both the objective time (IELT) and the subjective, patient-reported experiences changed during the observed time intervals.


Long-term Studies and Continuation

The initial pivotal studies were primarily relevant in trials assessing short-term symptom patterns, with follow-up durations typically limited to around 24 weeks. This means that there is limited information for long-term outcomes, and effects beyond the initial six-month period are not fully established. After the initial controlled trials, additional research has been used in observational settings evaluating daily-life functioning to explore how continuation patterns change over time. The data show patterns related to patient continuation that suggest the use of the medicine was associated with lower real-world persistence.

Summary of Research Gaps and Limitations

Research contributes to the broader evidence landscape for conditions associated with acute or disruptive episodes. However, certainty remains low in several areas because of the research limitation frames observed. The primary limitation is that follow-up durations were limited, meaning long-term effects are not fully established. Data are still emerging for a comprehensive understanding of patient experience over extended periods. Furthermore, while findings describe group patterns, research provides context but research does not determine whether an individual will respond similarly.

Frequently Asked Questions (FAQ)

Common questions about Kutub (FAQ)

Q: How quickly should someone expect to feel any effects from Kutub?

A: Official administration guidelines state that the medicine is prescribed to be taken approximately 1 to 3 hours before anticipated activity. This window reflects the time it takes for the active ingredients to be absorbed into the body. Clinical trial information also shows that potential side effects often occur within the first three hours following dosing, which is consistent with the timing of use.

Q: Are there any specific foods to avoid when taking Kutub?

A: While the tablet may be taken with or without food, official drug labeling specifically warns of a potential interaction with grapefruit or grapefruit juice. Regulatory sources document that these items are associated with this interaction. The drug is not intended to require broad dietary changes.

Q: Does taking Kutub mean I need to change my diet?

A: Regulatory information indicates the tablet can be taken with or without food. However, official documents caution against the use of large amounts of alcohol and grapefruit or grapefruit juice because of documented interactions. No other specific major diet changes are generally described in the label.

Q: What is the main thing Kutub is approved to treat?

A: According to regulatory-approved labeling, the medicine is officially indicated for the treatment of premature ejaculation (PE) and erectile dysfunction (ED) in adult men. This is the official purpose for which the drug has been reviewed and approved by health agencies.

Q: Is Kutub the same kind of medicine as [similar well-known drug name]?

A: Official regulatory documents describe Kutub as a combination medication. It contains two active substances: Dapoxetine, which is a type of Selective Serotonin Reuptake Inhibitor, and Sildenafil, which is a type of PDE5 inhibitor. This combination addresses two different types of conditions.

Q: What kind of side effects are people most worried about with Kutub?

A: Based on official clinical trial adverse event reporting, the most common effects reported by patients include nausea, headache, and dizziness or light-headedness. Regulatory documents list all reported side effects, categorizing them by how frequently they occur.

Q: Do many people stop taking Kutub because of side effects?

A: Official safety documents from clinical trials include specific rates on the number of patients who stopped using the medicine due to adverse events. This information is monitored by regulatory bodies as part of the drug's safety profile.

Q: Does Kutub have an effect right away, or does it take a few weeks?

A: Official dosing instructions state that the drug is intended to be taken as needed approximately 1 to 3 hours before anticipated activity. It is not intended for continuous daily use. This indicates that the medicine provides an acute effect rather than requiring weeks of build-up for the intended purpose.

Q: Is Kutub considered a high-risk medication?

A: Regulatory information includes specific warnings and restrictions for use. The drug is contraindicated (should not be used) in patients with conditions such as heart failure, moderate to severe liver impairment, and when taking certain other medicines. This means its use is restricted in specific, vulnerable populations.

Q: Do regulatory bodies like the FDA have a black box warning for Kutub?

A: The SSRI class of medicine, which includes the Dapoxetine component, is associated with specific warnings regarding suicidal ideation in young adults and adolescents in some jurisdictions, such as a Black Box Warning in the US. The specific risk warnings are defined in the local product labeling.

Q: What is the total duration of the studies conducted on Kutub?

A: Official regulatory registries and clinical trial summaries reference the duration of studies that were conducted to establish the drug's safety and effectiveness. These summaries, found in documents like the SmPC, detail the trial periods used to support the initial regulatory approval.

Q: Has Kutub been studied in children or teenagers?

A: Regulatory information clearly states that the medicine is not recommended for use in children or adolescents under 18 years of age. Its use is limited to adult men as specified in the official indication.

Q: Can people over the age of 65 use Kutub?

A: Official regulatory warnings state that use of the medicine requires caution in older patients (over 65 years). Specific dosage consideration may be necessary, as described in medical guidance.

Q: Is Kutub safe for women who are pregnant or planning to be?

A: According to official documentation, the medicine is not indicated for use in women at all. Furthermore, it is contraindicated (must not be used) during pregnancy.

Q: Why do official documents say Kutub might not be suitable for people with liver issues?

A: Regulatory documentation indicates that the Dapoxetine component is contraindicated (should not be used) in patients with moderate or severe hepatic (liver) impairment. This restriction is because liver function is necessary to properly process the drug.

Q: Can I take Kutub if I have high blood pressure?

A: The official warning states that the medicine may cause hypotension (low blood pressure). Due to this possibility, official warnings indicate that caution is required in patients with pre-existing cardiovascular risk factors.

Q: Does Kutub interact with any common over-the-counter pain relievers?

A: Official regulatory data notes an increased risk of gastrointestinal bleeding when the Dapoxetine component is combined with certain non-steroidal anti-inflammatory drugs (NSAIDs). The specific interaction depends on the exact pain reliever.

Q: If I feel better, can I just stop taking Kutub?

A: The medicine is intended for use on an as-needed basis only, approximately 1 to 3 hours before anticipated activity. It is not prescribed as a continuous daily treatment; therefore, there is no need to 'stop' a daily course.

Q: Is Kutub known to cause problems with sleeping?

A: Yes, regulatory documents list both insomnia (difficulty sleeping) and somnolence (sleepiness) as potential side effects reported in clinical trials for the active ingredients.

Q: What does 'contraindicated' mean in the context of Kutub?

A: The term contraindication is the official designation used in medical labeling. It describes a specific medical condition or circumstance where the drug is not permitted for use because the risk of harm significantly outweighs any potential benefit.

Q: Why do some people say Kutub makes them feel tired?

A: Official regulatory documents list somnolence (sleepiness) and excessive tiredness as potential side effects reported in clinical trials. This is a known effect of the active ingredients.

Q: How long does Kutub stay in your system after you stop taking it?

A: Official regulatory documents contain pharmacokinetic data, including the drug's half-life and how it is metabolized. This data defines how quickly the active substances are eliminated from the body after a single dose.

Q: Are there different strengths or forms of Kutub available?

A: Official product labeling, found in regulatory documents, typically defines the available dosage strengths of the combination of active ingredients and the pharmaceutical form (e.g., film-coated tablets).

Q: What percentage of patients in the studies saw an improvement with Kutub?

A: Official regulatory documents include specific efficacy results from clinical trials, which detail the percentage of patients who achieved specific measures of improvement compared to a placebo. This information is used to support the approved indication.

Q: Does the evidence for Kutub come mostly from short-term or long-term studies?

A: Clinical trial summaries in official documents specify the duration of studies (e.g., 12-week trials) used to support the initial regulatory approval. The approval is based on the safety and efficacy data gathered during those timeframes.

Q: Is it normal to have a slight headache when first starting Kutub?

A: Official regulatory documents list headache as one of the very common adverse effects reported by patients taking the drug in clinical trials. This is based on the frequency observed in the studies.

Q: Can men and women take Kutub for the same reasons?

A: No, official regulatory documentation clearly states that the drug is specifically not indicated for use in women. It is approved only for use in adult men to treat specific conditions.

Q: Why is a specific monitoring test sometimes required when taking Kutub?

A: Due to potential effects on the heart's electrical activity (e.g., syncope or fainting), the active component Dapoxetine sometimes requires a cardiovascular evaluation before treatment begins, as noted in regulatory warnings.

Q: Are there any risks associated with taking Kutub long-term?

A: The drug is only indicated for as-needed use, not continuous daily treatment, which inherently limits long-term exposure. The official safety profile for the individual active ingredients discusses potential long-term safety concerns based on available data.

Q: What are the major restrictions on who can use Kutub?

A: According to regulatory documents, major restrictions include women, people under 18 years old, those with severe liver impairment, certain heart conditions, and those currently taking specific interacting medicines. These are noted as contraindications or precautions.

Q: Does Kutub affect blood sugar levels?

A: The official adverse event list for the Sildenafil component includes reports of hypoglycemia (low blood sugar) in some cases. This indicates that the drug has the potential to affect blood sugar levels.

Q: Is Kutub a controlled substance?

A: In major jurisdictions, the active ingredients Dapoxetine and Sildenafil are generally not classified as controlled substances. However, due to the need for medical supervision, they are officially designated as prescription-only drugs.

Q: What should I do if I have a severe allergic reaction to Kutub?

A: Official regulatory warnings describe the need for immediate medical assistance if signs of a serious allergic reaction, such as swelling of the face, lips, or tongue, or difficulty breathing, are observed.

Q: Can you drive or operate machinery while taking Kutub?

A: Official warnings indicate that driving or operating machinery is restricted if a patient experiences side effects such as dizziness, fainting, or blurred vision. This restriction is in place because these effects may impair judgment.

Q: What are the ingredients in Kutub besides the main active component?

A: Official drug labeling includes a complete list of all components of the tablet. These include the two main active drug substances, plus a list of excipients (inactive ingredients) that are used to form the pill.

Q: Is there a risk of dependence or withdrawal symptoms with Kutub?

A: The active ingredients are generally not reported to be habit-forming by official safety data. However, for the Dapoxetine component, medical supervision is typically required if a patient is stopping treatment, which is consistent with the SSRI class.

Q: What is the chance of getting a serious but rare side effect from Kutub?

A: Official regulatory documents list all reported side effects and categorize them by their observed frequency in clinical trials (e.g., 'rare,' 'uncommon,' or 'very common'). This classification provides a general understanding of the likelihood of serious events.

Q: Why is Kutub only available as a prescription drug?

A: The official prescription-only status is determined by health regulatory bodies. It reflects the necessity for medical diagnosis, monitoring, and professional guidance to manage known risks, such as drug interactions and contraindications.

Q: Is it okay to take Kutub while breastfeeding?

A: The medicine is not indicated for use in women. Furthermore, the official regulatory warning states that the drug is not recommended for use by women who are breastfeeding.

Q: Does Kutub affect fertility?

A: Official regulatory data, particularly from non-clinical toxicology studies (animal studies), typically includes findings on potential effects on reproductive function or fertility. This information is reviewed during the approval process.

Q: Are there any specific lifestyle changes recommended when on Kutub?

A: Lifestyle recommendations in the official warnings are focused on avoiding specific interactions, particularly the consumption of large amounts of alcohol and grapefruit or grapefruit juice. These substances are known to interact with the drug.

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

A: Clinical trial follow-up data addresses the question of sustained effect (or loss of efficacy/tachyphylaxis) over the observed treatment period. This information is summarized in the official efficacy section of the regulatory documents.

How should Kutub be stored and disposed of?

Storage and Disposal Requirements for Kutub

Storage of Kutub (Dapoxetine) must strictly adhere to the conditions documented on the approved product labeling to ensure stability and quality.

Mandatory Storage Conditions

Requirement Official Stipulation
Temperature Store at controlled ambient temperature, typically not exceeding 30 C.
Protection Keep the film-coated tablets in the original blister pack and outer carton to protect them from moisture and light.
Child Safety The medicine must be kept out of the reach and sight of children.

Disposal Instructions

Unused or expired tablets should be disposed of via an official drug take-back program or mail-back envelope when available. If not available, the medication must be mixed with an undesirable substance (e.g., dirt, coffee grounds), placed in a sealed container, and then discarded in the household trash, following regulatory guidelines. Do not dispose of unused medication through wastewater unless specifically authorized.

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

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