Quit

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Medically reviewed

Marina Burgos

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 Quit

Quick Facts

Property Description
Active ingredient Nicotine Alkaloid
Pharmacological class Nicotinic Agonist, NRT Agent
Dosage forms Patch, Gum, Lozenge, Spray, Inhaler
Common use Smoking Cessation
Origin Natural (Alkaloid)

Quit: A Nicotine Replacement Therapy Agent

Quit is classified as a Nicotine Replacement Therapy (NRT) agent, which is a type of first-line medication specifically developed to assist with smoking cessation and manage nicotine dependence. As a treatment, it belongs to the pharmacological class of nicotinic agonists, providing essential support for individuals attempting to achieve tobacco abstinence. This medication is clinically recognized for making the quitting process significantly more manageable, as NRT is both safe and effective when used as directed to help people quit smoking.

This medication entity operates by providing a therapeutic alternative to tobacco use, delivering the addictive substance in a controlled manner. Quit is commonly available as an Over-the-Counter (OTC) product for adults (generally 18 years of age and older), emphasizing patient accessibility. The drug facilitates the difficult transition away from tobacco by mitigating the immediate shock of withdrawal.

Active Ingredient and Pharmaceutical Forms

The core component of Quit is the Nicotine Alkaloid, which is the single active ingredient responsible for the product's therapeutic effect. Nicotine is an alkaloid that originates as a natural product from the Nicotiana tabacum plant, but in this pharmaceutical preparation, it is isolated and purified for consistent, measured delivery.

Quit is characterized by its wide variety of dosage forms and corresponding routes of administration. These forms include the long-acting transdermal patch, which offers continuous delivery, alongside short-acting preparations such as chewing gum, sublingual lozenges, nasal spray, and inhalers. Notably, Quit and similar products offer patients different delivery methods—such as the patch for continuous, background relief, or gum for acute, episodic craving—allowing for a personalized therapeutic strategy.

The Principle of Non-Combustible Nicotine Delivery

The mechanism of Quit is fundamentally rooted in the principle of controlled nicotine delivery, separating the addictive agent from the destructive byproducts of tobacco combustion. By supplying the necessary nicotine alkaloid through non-combustible means, the medication bypasses the severe respiratory and cardiovascular damage associated with burning tobacco.

The primary benefit of this system is the reduction of severe withdrawal symptoms, including irritability, anxiety, and intense craving. The product allows the user to manage the physical addiction component through a reliable, regulated source, while simultaneously addressing the behavioral aspects of tobacco use disorder.

What side effects are possible with Quit?

Possible Side Effects and Safety Information

The safety profile of Quit, which contains Nicotine Alkaloid, is structured by regulatory authorities based on the frequency and the organ system affected. Adverse reactions are classified according to standard frequency bands utilized by the EMA and FDA. Most commonly documented side effects are typically related to the dose of nicotine or the specific delivery method used, such as the patch or gum.


Frequency and System-Organ Classes

The Very Common (ge 1/10) adverse reactions often include headache, nausea, and local application site reactions like skin irritation from patches or throat irritation from oral forms. Common reactions (ge 1/100 to < 1/10) include dizziness, vomiting, dyspepsia (heartburn), and insomnia. Reactions are categorized into System-Organ Classes, principally affecting the Gastrointestinal System (e.g., nausea, hiccups), the Nervous System (e.g., headache, dizziness), and the Skin (e.g., rash, pruritus).

Serious Adverse Reactions and Population-Specific Safety

Regulatory documents identify a need for caution regarding Serious Adverse Reactions. These include rare but documented events such as Severe Hypersensitivity Reactions (e.g., Angioedema) and certain Serious Cardiac Arrhythmias. The labeling also defines important safety constraints for specific groups. Doses safe for adults can be severely toxic or fatal to children, necessitating strict security of the product. Caution is also specified for use in individuals with severe renal or hepatic impairment and those with pre-existing cardiovascular disease (e.g., recent myocardial infarction, unstable angina). Safety notes indicate that local effects are often most prominent at the initiation of therapy and tend to lessen with continued use.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Nicotine Alkaloid products requires immediate attention, as regulatory guidance mandates contacting emergency services upon suspicion. The clinical profile is marked by signs of severe overstimulation of the nervous system.

Documented Overdose Manifestations

Manifestations officially listed in regulatory documents often begin with pronounced gastrointestinal symptoms, including nausea, vomiting, diarrhea, abdominal pain, and increased salivation. Neurological presentations include headache, dizziness, confusion, generalized weakness, tremors, and paleness. Severe cases may also involve sensory disturbances of hearing and vision.

Severe Outcomes and Emergency Action

Overdose can progress to severe systemic complications, including severe hypotension, cardiac arrhythmias, and convulsions. The most serious documented outcomes involve respiratory paralysis or failure, which may result in coma and death. Given the severity, urgent medical care is required for any suspected overdose.

Management and Risk Factors

Management is based on providing symptomatic and supportive treatment, as regulatory documents state that no specific antidote is known for nicotine poisoning. Procedural measures may involve gastric decontamination, such as the administration of activated charcoal. Regulatory bodies specifically highlight the acute, life-threatening risk of toxicity resulting from accidental ingestion in the pediatric population.

Therapeutic Uses of Quit

What Quit Treats: Main Uses and Benefits

The therapy is relevant in therapeutic contexts where supportive symptom management is appropriate, primarily to manage Nicotine Dependence in adults and assist with the process of smoking cessation. This therapy may assist in easing distress during the transition away from tobacco. The primary therapeutic goals generally include managing Nicotine Dependence, physical withdrawal symptoms, and intense craving.

Easing Withdrawal and Managing Craving

Quit is commonly used across conditions presenting with acute or disruptive episodes of dependence, particularly in adults seeking sustained tobacco abstinence. The therapy is relevant for easing challenging symptomatic manifestations, and may assist with managing symptom clusters that become intense or disruptive. This commonly includes symptoms related to systemic imbalance, such as pronounced irritability, anxiety, restlessness, and difficulty concentrating that arise from nicotine withdrawal. It is commonly used to help with easing the overall symptom load.

The medication is considered relevant for managing the high-intensity, episodic desires known as intense craving, which are symptoms that create noticeable functional strain. In situations where patients experience these acute urges, the therapy may help patients cope more steadily with symptom fluctuations, and may assist with maintaining functional stability.

“Applied in scenarios where additional management of discomfort is required, the therapy may assist the patient during difficult episodes and contributes to easing the overall symptom load.”


Quick Fact: Relief for

  • Nicotine Withdrawal Symptoms
  • Intense Craving

Eligibility and Restrictions for Use

Who Can and Cannot Use Quit?

The population eligibility for Nicotine Replacement Therapy (NRT) products, such as Quit, is strictly defined by regulatory authorities to ensure safety and effectiveness. Use is generally approved for adults aged 18 years and older who seek sustained tobacco abstinence.

Contraindications and Restrictions

The following groups or conditions are subject to absolute prohibitions or restricted use, as outlined in official labeling:

  • Absolute Contraindication: The medicine is strictly contraindicated in patients with a recent myocardial infarction (within two weeks), unstable or worsening angina pectoris, severe cardiac arrhythmias, or a known hypersensitivity to nicotine or any component of the product.
  • Age Restriction: Use in children under 12 years of age is contraindicated, and use in adolescents (12-17 years) is not recommended without professional medical guidance.
  • Use with Caution: Patients with conditions like moderate to severe renal or hepatic impairment, certain controlled cardiovascular diseases, active peptic ulcers, or uncontrolled hyperthyroidism are advised to use the medicine only with caution and under medical supervision.
  • Reproductive Status: Use during pregnancy or lactation is restricted and generally considered only after non-pharmacological cessation methods have failed, contingent upon a professional risk-benefit assessment.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The interaction profile for Quit (Nicotine Alkaloid) is primarily documented in government regulatory sources, covering both the effects of the nicotine component and metabolic changes resulting from smoking cessation.

Documented Metabolic and Exposure-Altering Interactions

Interacting Substance/Class Official Interaction Statement
CYP1A2 Substrates (e.g., Theophylline, Clozapine, Ropinirole) Increased Exposure Risk: Stopping smoking removes the inducing effect of tobacco smoke on the CYP1A2 enzyme, which can lead to a slower metabolism and a rise in the plasma concentration of these drugs.
Insulin Altered Absorption: Increased subcutaneous absorption occurs upon smoking cessation, which may necessitate a reduction in the insulin dose.
Adenosine Pharmacodynamic Enhancement: Nicotine may enhance the hemodynamic effects of adenosine, including increases in blood pressure and heart rate.

Interactions with Food, Beverages, and Supplements

Interacting Product Restriction/Rule (Oral Forms)
Acidic Foods, Beverages, and Alcohol Absorption Interference: Must be avoided 15 minutes prior to and during the use of oral dosage forms (gum, lozenge) to prevent decreased absorption of nicotine.

Population-Specific Cautions

  • Hepatic or Renal Impairment: Caution is advised in patients with moderate to severe hepatic impairment or severe renal impairment, as nicotine clearance may be decreased, increasing potential for adverse effects.
  • Diabetes Mellitus: Patients should monitor blood sugar levels more closely during the transition away from tobacco and initiation of NRT.

Mechanism of Action

The drug Quit acts through two primary mechanistic domains, resulting in an altered physiological response profile.

Receptor-Mediated Signaling Modulation

This domain involves Quit's action as a selective modulator at key receptors within the central nervous system. By fine-tuning the activity of specific transmitters, the drug modifies early molecular steps that shape systemic physiological outcomes, thereby modifying the magnitude of mediator-driven signaling events.


Pathway Activity Regulation

Quit engages mechanisms that directly influence overactivity or dysregulation of downstream signaling sequences. It is relevant in cascades where multiple layers of pathway activation occur, influencing the control mechanisms of specific signaling patterns. This ultimately modulates overactivity within specific physiological pathways and elicits a distinct set of physiological changes shaping the drug’s effect profile.

Dosage and Administration Information

How to Use Quit

Quit (Nicotine Replacement Therapy, or NRT) is used according to specific, tiered protocols to deliver nicotine through non-combustible means. Administration is categorized by the dosage form, which includes the transdermal patch, oral/buccal forms (gum, lozenge, inhaler), and the nasal spray. The choice of form dictates the route of administration, which may be transdermal, buccal, or nasal.


Official Dosing Regimens and Schedules

Official dosing is a stepped-down regimen that typically lasts 8 to 12 weeks. The starting dose is stratified based on the user's prior smoking habit. For instance, the transdermal patch regimen for heavy smokers often begins at 21 mg per 24 hours, while light smokers may start at 14 mg. Similarly, the starting strength for gum and lozenge is 4 mg if the first cigarette is smoked \le 30 minutes after waking, or 2 mg if it is smoked >30 minutes after waking.

Dosage Form Maximum Daily Limit Frequency Pattern
Gum 24 pieces/day One piece every 1 to 2 hours during initial phase
Lozenge 20 lozenges/day One piece every 1 to 2 hours during initial phase
Patch One 21 mg patch/24 hours Replaced once daily

Administration Requirements

Each form requires specific usage conditions to ensure correct absorption. The patch must be applied to a clean, hairless area and the application site must be rotated daily. Oral forms, such as gum and lozenge, require patients to avoid eating or drinking (except water) for 15 minutes before and during use; the lozenge must not be chewed, and the gum requires a controlled "chew and park" technique for optimal buccal delivery. Use of all forms is subject to a maximum 24-hour dose, which must not be exceeded.

Recent Clinical Evidence

Research evidence / Overview of studies for Quit (Nicotine Replacement Therapy)

Evidence for Use in Smoking Cessation

The core body of research on Quit was studied for its potential to support sustained abstinence from tobacco use. This area of study is supported by a large number of Randomized Controlled Trials (RCTs), where people are randomly assigned to receive either an NRT product or an inert placebo. These trials are compiled and assessed in extensive Systematic Reviews and Meta-analyses by independent bodies, which contributes to the broader evidence landscape.

Research examined outcomes related to long-term tobacco abstinence. The main outcome measured was continuous abstinence from tobacco use for periods of six months or longer, often using objective measures for verification. Studies also explored whether combining a long-acting form (like the patch) with a short-acting form (like gum or lozenges) was studied for different outcomes compared to a single-product regimen.

In these studies, findings describe patterns observed in the groups assigned to NRT, and research monitored outcomes related to continuous abstinence compared to the groups receiving placebo. For those using combined therapy, research highlights changes measured during the study period, suggesting that this approach was observed in some studies to have different long-term abstinence measurements compared to a single-product regimen. Research provides context but not individual predictions, and study results reflect the specific conditions under which they were conducted.


Evidence for Managing Withdrawal Symptoms and Craving

Quit was evaluated in research exploring outcomes related to the physical and psychological challenges that arise during the initial phase of quitting. Research explored short-term symptom changes, focusing on the first few weeks following cessation, which is often a period of heightened symptom activity.

These studies focused on patient-reported outcomes describing perceived discomfort. Researchers measured changes in the intensity of nicotine craving and specific outcomes related to systemic or functional imbalance, such as irritability, anxiety, and restlessness. This evidence is derived from settings with varying symptom burdens.


Long-Term Studies and Durability of Abstinence

Studies have also monitored the long-term course of abstinence, with follow-up durations extending to 12 months and sometimes up to several years. This research examined the patterns of abstinence that are maintained well after the initial treatment period is over. Data show patterns related to the maintenance of abstinence.


Research Gaps and Areas of Uncertainty

While there is a high volume of quality evidence supporting the study of Quit, several research gaps and limitations have been identified by regulators and systematic reviews. One key area is that the follow-up durations were limited in many initial trials, meaning long-term effects are not fully established.

Additionally, data for individuals with lower levels of nicotine dependence remain insufficient. Research does not provide extensive data on the comparative effects of different NRT forms (e.g., specific gum dosage versus a specific lozenge dosage) on various outcomes. The findings describe group patterns, not personal outcomes, and evidence highlights what is known—and what is still uncertain—about NRT.

Key Studies & References Tobacco: preventing uptake, promoting quitting and treating dependence (NICE Guideline NG209)

Frequently Asked Questions (FAQ)

Common questions about Quit (FAQ)


Q: Is Quit the only type of medicine available for this condition?

According to official drug and health guidance, Nicotine Replacement Therapy (NRT) is one treatment option for smoking cessation. This approach is one of several types of FDA-approved medications available. Other prescription medications without nicotine are also approved for this purpose.


Q: Why do people sometimes use Quit instead of other similar medicines?

One factor is that these NRT products are commonly available for adult use without requiring a prescription. Additionally, combination therapy, which uses both a long-acting and a short-acting NRT form, is described in official guidelines as a supported strategy for managing nicotine dependence.


Q: How quickly should I expect to notice any effects from Quit?

The speed at which the drug takes effect is dependent on the dosage form used. Fast-acting oral forms, such as gum and lozenges, are designed to reach peak nicotine levels in a matter of minutes. In contrast, the transdermal patch provides a more continuous and sustained release of the active ingredient over a period of many hours.


Q: Are side effects from Quit usually long-term or temporary?

Official product information notes that local side effects are commonly experienced at the application site or in the mouth, depending on the dosage form. These local reactions are often reported as being most prominent when therapy begins and tend to lessen with continued use.


Q: Are there specific food items or supplements that are known to interact with Quit?

Regulatory labeling documents state that acidic foods, beverages, and alcohol may interfere with the absorption of nicotine from the oral dosage forms. Labeling specifies that the consumption of these items is restricted for 15 minutes before and during the use of these forms. No specific interactions with common vitamins or supplements are uniformly listed in the regulatory documents.


Q: Has Quit been studied in diverse patient populations?

Official summaries of clinical trials for Quit indicate that the core research focused primarily on the adult population seeking to stop smoking. Some reviews have identified a lack of sufficient data specifically concerning individuals with lower levels of nicotine dependence.


Q: Where can I find summaries of the major clinical trials for Quit?

Summaries of the major clinical trials that support the use of this drug are contained within the product's official regulatory labeling, such as DailyMed or the EMA's SmPC documents. Additionally, research studies are registered and often summarized in government-sponsored public databases like ClinicalTrials.gov.


Q: What are the official warnings or boxed statements associated with Quit?

Official product labeling contains important safety information and warnings regarding its use. These include absolute prohibitions (contraindications) for people with certain severe cardiovascular conditions, like a recent heart attack. The warnings also emphasize the risk of adult doses being severely toxic to children.


Q: Does Quit require ongoing monitoring by a healthcare provider?

While the product is commonly available over-the-counter for use by adults, the labeling specifies that use is advised only under medical supervision for certain populations. This includes adolescents and patients with underlying conditions, such as diabetes or severe kidney or liver impairment.


Q: Can Quit affect performance in physically demanding activities?

The drug is associated with certain adverse effects, including dizziness and headache, which are classified as common Nervous System side effects. The presence of these effects may be relevant for activities that require physical concentration, such as driving or operating heavy machinery.


Q: What research exists about using Quit during pregnancy or breastfeeding?

Regulatory labeling places restrictions on the use of this drug during pregnancy and while breastfeeding. Use in these periods is generally considered only after non-pharmacological cessation methods have been attempted and following a professional risk-benefit assessment.


Q: Is there a specific mechanism behind why Quit can cause dizziness?

The mechanism of action involves the modulation of key receptors in the central nervous system. Dizziness and headache are listed in regulatory documents as common adverse reactions that affect the central nervous system, which is the site of the drug's primary action.


Q: Is it true that Quit works differently in children than in adults?

The official age restrictions indicate a difference in safety profile. Use is strictly prohibited for children under 12 and not generally recommended for adolescents without medical guidance. This is due to significant safety concerns, as doses appropriate for adults can be severely toxic to children.


Q: If I miss a dose of Quit, what generally happens?

Regulatory instructions emphasize the necessity of following the set dosing schedule. Product labeling does not typically contain explicit, step-by-step instructions for managing a missed dose, but regulatory instructions warn against exceeding the maximum daily dose.


Q: Does Quit stay in the system for a long time after I stop using it?

Official pharmacological information describes the clearance of nicotine and its major active metabolite, cotinine, from the body. Regulatory data on half-lives indicate that the active substance is generally cleared from the system over a period of hours or a day after the final dose is administered.


Q: What is the official classification of Quit (e.g., controlled substance)?

Quit is regulated by the FDA as a drug and is widely available as an over-the-counter (OTC) product for adults. Nicotine is an alkaloid that is not currently listed as a controlled substance under the schedules of the Drug Enforcement Administration's Controlled Substances Act.


Q: Are there any known issues with taking Quit while traveling across time zones?

Dosing schedules for the patch are based on a 24-hour application, and oral forms are based on specific time intervals. Adherence to the product's use is based on maintaining the recommended interval and not exceeding the maximum 24-hour dose.


Q: Is Quit available generically?

The FDA, which regulates drug products in the United States, has approved multiple generic versions of the various Nicotine Replacement Therapy dosage forms. This means that generic options for the patches, gums, and lozenges are available to consumers.


Q: Do any official documents describe Quit as having a risk of withdrawal symptoms?

The drug's regimen is designed with a gradual reduction to help manage withdrawal symptoms that occur when quitting tobacco use. However, abrupt discontinuation of the NRT product may result in withdrawal symptoms associated with the dependence on nicotine.

How should Quit be stored and disposed of?

How to Store and Dispose of Quit?

Official regulatory information requires Quit to be stored at controlled room temperature (e.g., 68°F to 77°F or 20°C to 25°C). The medicine must be kept in its original container and protected from moisture and excessive heat to maintain its stability. Do not use the product after the expiration date printed on the packaging.

All medicine should be kept out of the sight and reach of children and pets.

For disposal, utilize a drug take-back program or mail-back option when available. If these are not options, the medicine must be disposed of in the household trash by mixing it with an unappealing substance, such as dirt or used coffee grounds, and sealing the mixture in a plastic bag to render it non-retrievable. Do not flush the medication down the toilet or pour it down a sink.

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

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