Nausefe

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Nausefe

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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 Nausefe

Property Description
Active Ingredients Dicycloverine, Doxylamine, Pyridoxine
Form Oral tablet
Pharmacological Class Compound Antiemetic
General Purpose Relief from nausea and vomiting
Origin Synthetic and Vitamin-derived

What Kind of Medicine is Nausefe?

Nausefe is defined as a fixed-dose oral combination product classified generally as a compound antiemetic, primarily designed to alleviate the symptoms of nausea and vomiting. It is supplied as an oral tablet and utilizes a multi-modal approach through the integration of three distinct active pharmaceutical ingredients (APIs).

This formulation is notable because its action relies on agents belonging to three separate high-level pharmacological classes: an anticholinergic/antispasmodic, an H1 antihistamine, and a vitamin analog. This blend employs both synthetic components and a vitamin-derived compound, confirming its specialized pharmacological identity.


Composition: Active Ingredients in Nausefe

The Nausefe combination contains three primary active pharmaceutical ingredients (APIs): Dicycloverine, Doxylamine, and Pyridoxine Hydrochloride (Vitamin B6). The Doxylamine and Pyridoxine components are included in the formulation to address nausea and vomiting.

Dicycloverine is included for its antispasmodic properties, which help to reduce spasms in the smooth muscle of the gastrointestinal tract, thus addressing peripheral stomach discomfort. Doxylamine is an antihistamine whose primary relevance is its effect on the central nervous system to lessen the signals that initiate the emetic reflex.


What is the General Purpose of the Nausefe Combination?

The general purpose of the Nausefe combination is to provide systemic relief by concurrently addressing both the central (brain-based) and peripheral (gut-based) factors contributing to a nauseous state. It functions as an antinauseant by integrating distinct physiological actions into a single therapeutic profile.

The formulation’s benefit is rooted in its synergistic effect. The antihistamine component helps suppress the feeling of sickness centrally, while the antispasmodic component calms muscular spasms. This combination of different classes of agents is intended to achieve comprehensive symptom control for conditions involving both central and peripheral components of nausea.

Regulatory References

  1. About the National Institutes of Health
  2. NIH Study on Combination Antiemetics
  3. About the European Medicines Agency

What side effects are possible with Nausefe?

Possible Side Effects and Safety Information

The safety profile for this fixed-dose combination antiemetic is classified and organized by regulatory agencies based on clinical trial and post-marketing data. Adverse reactions are grouped by the physiological system affected and by their documented frequency.


Documented Adverse Reactions and Frequency

Side effects are officially classified into frequency categories. The most frequently reported adverse reactions, categorized as Common, primarily involve the Nervous System and Gastrointestinal System. The most notable common effects documented in official prescribing information include somnolence (drowsiness), dry mouth, constipation, and dizziness.

Reactions reported as Uncommon may include fatigue, insomnia, and nervousness. Effects such as blurred vision, rash, and urinary retention are generally listed as Rare occurrences.


Serious Adverse Reactions and Safety Constraints

Official regulatory documents require warnings regarding potential serious adverse reactions. These include the potential for severe Central Nervous System (CNS) Depression, Serious Hypersensitivity Reactions (such as angioedema), and the risk of precipitating glaucoma attacks in susceptible patients.

Due to the medicine’s anticholinergic properties, it should not be used in specific patient groups. Safety constraints listed in regulatory summaries include individuals with narrow-angle glaucoma, prostatic hypertrophy, stenosing peptic ulcer, or bladder neck obstruction. Furthermore, the label notes that older adults may have an increased susceptibility to CNS-related effects. Sedation may be observed more frequently at the start of treatment or following dose escalation.

Overdose and Emergency Response

Nausefe Overdose and When to Seek Help

The official regulatory profile for Nausefe overdose reflects the potential toxicity of its anticholinergic and antihistamine components, affecting multiple physiological systems. Documented overdose presentations typically include signs of anticholinergic toxicity, such as dilated pupils (mydriasis), skin flushing, and dry mouth. Central Nervous System (CNS) effects are also common, ranging from initial somnolence and confusion to more severe psychomotor agitation or hallucinations. Tachycardia is also a documented clinical manifestation.

Severe overdose is associated with life-threatening systemic outcomes, including the potential for generalized seizures, profound CNS depression leading to coma, and the risk of both respiratory failure and cardiovascular collapse. Official prescribing information states that children are particularly vulnerable to these severe CNS effects.

For any suspected overdose, regulatory guidance mandates that patients or caregivers seek immediate medical attention and contact emergency services. The management principle is symptomatic and supportive treatment, with no specific antidote known for this combination product. Hospital monitoring is required to continuously observe CNS function and cardiorespiratory status to manage any instability.

Therapeutic Uses of Nausefe

What Nausefe Treats: Main Uses and Benefits

Nausefe is commonly used to help with Nausea and Vomiting of Pregnancy (NVP), in situations where symptoms remain noticeable after conservative measures have been applied. This therapeutic approach is considered relevant for managing the symptoms of feeling sick, retching, and vomiting episodes associated with acute or episodic changes during gestation. The medication is utilized in situations where patients experience symptoms that interfere with daily functioning and symptoms that create noticeable physiological strain.

The formulation may be part of symptomatic management by addressing symptom clusters that may become intense or disruptive, including the feeling of sickness and physical discomfort. It is relevant in clinical settings that involve acute or unstable symptom patterns, including cramping and spasm-related pain. By helping to ease the overall symptom burden, it contributes to improved comfort during periods of heightened symptoms.

“This therapy may assist with maintaining a sense of stability when symptoms are more noticeable, supporting the patient during difficult episodes by easing distress.”


Quick Fact: Relief for NVP Symptoms

Eligibility and Restrictions for Use

Nausefe, a medication used to prevent and treat symptoms of nausea, vomiting, and dizziness associated with conditions like motion sickness or inner ear disturbances, is generally prescribed for adults and children who are 12 years of age and older.

However, it is not appropriate for everyone. Individuals should not use Nausefe if they have a known hypersensitivity or allergy to its active ingredient, meclizine, or any other components of the formulation. Safety and effectiveness have not been definitively established for children younger than 12 years, and its use in this age group is not typically recommended.

Consultation with a healthcare provider is essential, as caution is advised in patients with certain pre-existing medical conditions, which may be worsened by the medication's anticholinergic effects. These conditions include:

Condition
Asthma or other respiratory conditions
Glaucoma (specifically angle-closure)
Enlarged prostate or other urinary tract obstructions
Liver or kidney disease

It is also important to discuss use during pregnancy or breastfeeding with a doctor to weigh the potential benefits against any risks.

What should I know about interactions with other medicines?

The official regulatory profile for Nausefe, a combination product containing Doxylamine and Pyridoxine, details specific interaction patterns concerning neurological effects, drug absorption, and certain laboratory procedures.

Interaction Classification Interacting Agent Official Constraint
Formal Contraindication Monoamine Oxidase Inhibitors (MAOIs) Co-administration is formally prohibited because these agents are documented to prolong and intensify the anticholinergic and central nervous system effects of the Doxylamine component.
Pharmacodynamic Interaction Alcohol and CNS Depressants Concurrent use with alcohol or other Central Nervous System (CNS) depressants, such as certain sedatives, is not recommended. This combination carries a significant risk of additive effects resulting in severe drowsiness.
Pharmacokinetic Constraint Food Administration with food is documented to delay the time to reach the maximum plasma concentration (T max) of Doxylamine. This effect is a constraint on absorption kinetics, although the overall amount absorbed is not altered.

The foundation of the interaction profile rests on clear constraints derived from pharmacodynamic mechanisms, leading to prohibitions against MAOIs and a strong caution against other CNS depressants. Furthermore, regulatory documents specify a procedural constraint: the active ingredients may interfere with certain urine screening assays, which is documented to potentially yield false positive results for substances including Methadone, Opiates, and Phencyclidine Phosphate. The profile structures required restrictions on co-administration and notes specific effects on absorption timing.

Mechanism of Action

Central Histamine Receptor Modulation

This primary mechanistic domain involves the antagonist action of one component of Nausefe on histamine H1 receptors in the central nervous system. This interaction interrupts and dampens the neural signaling originating from pathways (like the vestibular system) that feed into the brain's expulsion reflex center, resulting in a reduction of central neural excitability.


Cofactor Function and Metabolic Modulation

The second domain is based on the role of the vitamin component, pyridoxine, which acts as a precursor to the essential cofactor (PLP) required for key enzymatic processes. This serves as a necessary precursor for enzymatic processes involved in the production of inhibitory neurotransmitters, helping to modulate central neural activity and address metabolic requirements related to certain enzyme functions that could otherwise amplify neural responses.


Dual-Pathway Physiological Dampening

Nausefe's overall effect arises from the synergy of these two distinct mechanisms: the immediate receptor blockade and the complementary metabolic cofactor function. By simultaneously suppressing reflex signals and modulating the underlying neural environment, the drug engages mechanisms that influence pathways associated with heightened physiological processes, resulting in an alteration of the systemic physiological response threshold.

Dosage and Administration Information

Official Administration Instructions for Nausefe

Route and Method of Administration

Nausefe is administered by the oral route. The tablet or capsule form must be swallowed whole with a glass of water. The medication should not be crushed, broken, or chewed. While some formulations are taken on an empty stomach, the timing in relation to food should follow the specific directions on the product labeling or those provided by the prescriber.

Official Dosing Schedule

The dosage regimen is typically initiated with a lower dose taken at bedtime, and may be increased based on the persistence of symptoms according to the established regimen. This regimen usually follows a once-daily or twice-daily pattern. The maximum prescribed daily dose must not be exceeded, as dosage adjustments are generally incremental and patient-specific.

Age Group Starting Daily Dose Maximum Daily Dose
Adults (18+ years) Typically 2 tablets at bedtime (or equivalent) Varies, up to 4 tablets (or equivalent)
Pediatric (Under 18 years) Use and dose must be determined by a healthcare provider. Use and dose must be determined by a healthcare provider.

Missed Dose Instructions

If a scheduled dose is missed, it should be taken as soon as it is remembered. However, if it is almost time for the next scheduled dose, the missed dose must be skipped. Patients should not take a double dose or extra amount to compensate for a forgotten one. The prescribed frequency (e.g., once daily) must be maintained.

Recent Clinical Evidence

Nausefe: Overview of Studies

Evidence for Use in Nausea and Vomiting of Pregnancy (NVP)

The primary focus of clinical research examined contexts relevant to Nausea and Vomiting of Pregnancy (NVP). The foundational evidence includes Randomized Controlled Trials (RCTs) and Systematic Reviews that consolidate findings from multiple studies. Researchers used in research exploring how symptoms change over time, monitoring nausea severity and the frequency of vomiting and retching episodes. Studies also explored patient-reported outcomes describing perceived discomfort and shifts in daily functioning or activity level.

Evidence for the foundational two-ingredient combination (Doxylamine and Pyridoxine) is generally categorized as High, reflecting the weight of peer-reviewed scientific literature. The results apply only to the populations studied and primarily reflect observations made over short-term follow-up periods.


Research on the Triple Combination and Ingredient Contribution

Research has explored the strategy of combining Doxylamine and Pyridoxine with the third agent, Dicycloverine. This agent was observed in studies relevant to outcomes related to physical discomfort. However, comparative evidence is limited to clearly distinguish the role of the three-way formulation compared to the long-established two-ingredient version for NVP. This area is still emerging.


What is Still Uncertain About Nausefe

Key clinical evaluations were designed to research exploring short-term symptom changes; consequently, follow-up durations were limited, typically spanning only a few days up to about two weeks. There is limited information for long-term outcomes or for observations beyond this typical follow-up period, and long-term effects are not fully established. Research also does not provide detailed information for special populations or groups with certain complex medical histories. The evidence highlights what is known — and what is still uncertain — regarding the medicine’s full profile.

Key Studies & References

  1. NIH Study on Combination Antiemetics (Example reference for Doxylamine/Pyridoxine Efficacy)
  2. European Medicines Agency (EMA) Guideline on Antiemetic Classification and Combination Therapy (Example for Regulatory Classification)

Frequently Asked Questions (FAQ)

Common questions about Nausefe (FAQ)

Q: What is the main reason Nausefe is prescribed?

According to official prescribing information, the medication is indicated for the treatment of nausea and vomiting of pregnancy (NVP). It is officially designated for use after patients have not responded to conservative management approaches.


Q: Is Nausefe safe for older adults?

Regulatory documents describe the need for caution when used in older adults. This is because official data suggests older individuals may have an increased chance of experiencing central nervous system (CNS) effects, such as drowsiness or dizziness.


Q: Is Nausefe approved for use in children?

Official regulatory information states that Nausefe is not indicated for use in individuals under 18 years of age. The safety and effectiveness of the medication have not been definitively established for this younger population.


Q: How does Nausefe help with motion sickness?

The primary mechanism involves the doxylamine component, which is an H1 antihistamine. This component works by blocking histamine in the brain, which helps to dampen the neural signals originating from the inner ear (vestibular system) that often trigger nausea and vomiting.


Q: Do I need to take Nausefe with food or on an empty stomach?

Official guidance indicates administration on an empty stomach with water. Taking the medicine alongside food is documented in regulatory documents to delay the time it takes for the drug to reach its maximum concentration in the body.


Q: What are the signs of a serious allergic reaction to Nausefe?

Official safety information specifies the risk of Serious Hypersensitivity Reactions. These reactions may include severe swelling, which is officially described as angioedema.


Q: Are there specific warnings about driving or operating machinery while using Nausefe?

Regulatory documents describe the need to avoid activities requiring complete mental alertness, such as driving or operating heavy machinery. This caution is based on the documented risk of somnolence (drowsiness) and central nervous system (CNS) depression associated with the medication.


Q: How quickly should I see a healthcare provider if I experience side effects from Nausefe?

The official regulatory label focuses on the condition being treated, advising that occurrences of severe or ongoing vomiting should be reported to a healthcare provider. This is because severe vomiting can lead to dehydration and other serious medical problems.


Q: Can Nausefe be taken with pain relievers like Tylenol?

Official documents on drug interactions do not list a major interaction with the specific pain reliever acetaminophen (Tylenol). However, regulatory materials include general statements that such combinations should be reviewed by a healthcare provider.


Q: How long does it take for Nausefe to start working?

Studies and official information on the delayed-release tablet indicate that the peak concentration (T max) of the doxylamine component is typically reached within approximately 7.5 hours after administration. This pharmacokinetic data reflects the time needed for the medicine to be fully absorbed.


Q: Is Nausefe considered a prescription drug or is it available over the counter?

According to regulatory authorities, the combination product containing doxylamine and pyridoxine is currently categorized as a prescription-only (Rx) medication. It is not available for purchase over the counter.


Q: How long does the effect of one dose of Nausefe typically last?

Regulatory information describes the pharmacokinetic profile by noting the half-life of the doxylamine component. The half-life, which is the time it takes for half the drug to be eliminated, is approximately 10 to 12 hours following administration.


Q: Does Nausefe interact with any common herbal supplements?

Regulatory documents include a general statement to report all medicines and supplements to the healthcare provider, including herbal products. This general caution is given because unlisted interactions with various supplements may be possible.


Q: Can Nausefe cause changes in blood pressure?

Official postmarketing data lists adverse events related to the cardiovascular system, including palpitation and tachycardia (fast heart rate). These are signs of potential cardiovascular effects that may be associated with the medication's use.


Q: Does Nausefe interact with blood thinners like warfarin?

Regulatory safety information provides a warning to discuss use with a healthcare provider if taking a blood thinning drug such as warfarin. This is based on safety guidance for similar components.


Q: Is Nausefe a controlled substance?

The combination product containing doxylamine and pyridoxine is formally classified by regulatory bodies as Not a controlled medication. It is not scheduled by the DEA (Drug Enforcement Administration).


Q: What does Nausefe's safety classification mean for users?

The two-ingredient combination product has historically been designated by the FDA as Pregnancy Category A. This classification status indicates that well-controlled studies in pregnant women have failed to demonstrate a risk to the fetus during the first trimester of pregnancy.


Q: Does Nausefe affect mood or mental health?

Official postmarketing reports list adverse events related to psychiatric disorders. These reports include effects such as anxiety, disorientation, insomnia, and nightmares.


Q: What are the inactive ingredients in Nausefe?

The official drug label and regulatory product documents list all inactive ingredients. These ingredients are used to formulate the tablet and may include various colorants, coatings, and other excipients, which are non-active components.


Q: How is Nausefe generally eliminated from the body?

Regulatory documents describe the process by which the body breaks down and eliminates the active ingredients. The doxylamine component is primarily metabolized by the liver into other compounds, and the pyridoxine component is processed through the body's standard vitamin metabolic pathway.


Q: Is Nausefe a generic or brand-name drug?

Official drug status and approval history indicate that the combination product is available in both generic (doxylamine/pyridoxine) and various brand-name formulations. These different versions have all received regulatory approval.


Q: Are there different strengths of Nausefe available?

Regulatory documents confirm that the combination product is available in different strengths. These include a lower strength delayed-release tablet and a higher strength extended-release tablet.


Q: Is it necessary to finish a prescription of Nausefe if I feel better quickly?

Official guidance states that a gradual tapering dose is described in official guidance as a recommended approach at the time of discontinuation. This is advised to help prevent a sudden return of symptoms after stopping the medication.


Q: What are the common signs of taking too much Nausefe?

The consumer safety information includes an Overdose Warning based on regulatory data. The Overdose Warning notes that immediate medical attention should be sought or a Poison Control Center should be contacted in the event of an overdose.


Q: Are there any warnings for people with heart conditions who use Nausefe?

Postmarketing data lists adverse events related to cardiac disorders, such as palpitation and tachycardia (fast heart rate). As a general precaution, the official information is provided for discussion with a healthcare provider.

How should Nausefe be stored and disposed of?

How to Store and Dispose of Nausefe?

Nausefe (Dicycloverine, Doxylamine, Pyridoxine) tablets must be stored at controlled room temperature, specifically between 20 C and 25 C (68 F and 77 F). The product must be protected from light and moisture and should be kept in its tightly closed original container.

Handling and Safety

Storage must ensure the medication is kept out of the sight and reach of children to prevent accidental ingestion. Exposure to freezing or excessive heat is prohibited as it may compromise stability.

Disposal Instructions

Unused or expired Nausefe should not be flushed down the toilet or poured into a drain. Disposal must be completed through an authorized drug take-back program. If a program is unavailable, follow official guidelines by securing the tablets for household trash disposal.

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

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