Ivedal

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Ivedal

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

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

Overview of Ivedal

Quick Facts: Ivedal (Zolpidem) Identity

Property Description
Active ingredient Zolpidem tartrate
Form Tablet (various release types), Sublingual tablet, Oral spray
Pharmacological class Sedative-Hypnotic, Non-benzodiazepine Z-drug
Common use Short-term treatment of Insomnia (difficulty falling asleep)
Origin Synthetic (Imidazopyridine compound)

The Drug Entity: Zolpidem Tartrate and its Classification

Ivedal, a prescription-only medicine (POM), is defined by its sole active ingredient, Zolpidem tartrate, and is formally designated as a Sedative-Hypnotic agent. Its core identity lies in belonging to the non-benzodiazepine Z-drug group, a class of compounds recognized for initiating sleep.

This compound is entirely synthetic, derived from the Imidazopyridine chemical class, and is characterized by a unique structural profile. Unlike traditional Benzodiazepines, Zolpidem functions as a highly selective agonist at the GABAA receptor complex. This targeted approach to the inhibitory systems of the Central Nervous System (CNS) is fundamental to its ability to modulate brain activity for sleep induction.

Form and General Therapeutic Purpose for Sleep

Ivedal is supplied as a single-active-ingredient product in multiple solid oral dosage forms, including the standard film-coated tablet, extended-release preparations, and the sublingual tablet, supporting the oral or sublingual route of administration. The availability of these specialized forms, combined with solid excipients, is designed for a precise and consistent therapeutic effect.

Its general therapeutic purpose is confined to the short-term treatment of Insomnia characterized by difficulties with sleep initiation. The drug is used for this specific indication. The drug’s focused CNS depressant action is utilized to accelerate the time required to fall asleep (sleep latency), serving as a temporary measure to re-establish sleep patterns.

What side effects are possible with Ivedal?

Possible side effects and safety information

The official safety documentation for Ivedal (Zolpidem) classifies potential adverse reactions by frequency and the body system affected, focusing heavily on Central Nervous System (CNS) effects and behavioral safety constraints.

Category Regulatory Statement
Common Adverse Reactions Somnolence, dizziness, and headache are frequently reported. Gastrointestinal effects such as nausea and diarrhea are also common in initial or short-term use.
System-Organ Classes Effects are primarily categorized under Nervous System disorders (e.g., amnesia, somnolia) and Psychiatric disorders (e.g., hallucinations, agitation, depression).
Serious Adverse Reactions Serious safety statements include reports of complex sleep behaviors (e.g., sleep-driving or walking while not fully awake, with no memory of the event), which can lead to severe injury. Rare reports of anaphylaxis and angioedema (severe allergic swelling) are also documented.

Safety Restrictions and Patterns

The risk of developing drug dependence and abuse is documented, and regulatory labels emphasize that this risk increases with the duration of treatment and higher doses. Rebound insomnia and withdrawal symptoms may occur upon rapid discontinuation.

Special population safety notes exist: Older adults are advised a lower dose due to heightened sensitivity to CNS effects, which can increase the risk of falls. The medicine is contraindicated in patients with severe hepatic impairment due to the risk of exacerbating liver-related brain disease.

Overdose and Emergency Response

Overdose of Ivedal (Zolpidem) involves a deepening spectrum of Central Nervous System (CNS) depression. Symptoms documented in regulatory labeling range from severe drowsiness, somnolence, and staggering to progressive impairment of consciousness and light coma. The most serious documented outcomes include respiratory depression and cardiorespiratory collapse, which have been associated with fatal outcomes. The risk of these severe manifestations is significantly heightened by the co-ingestion of alcohol or other CNS depressant medications.

Official regulatory documents mandate that the user seek immediate medical attention or get emergency help at once if an overdose is suspected, especially when signs like difficulty breathing or loss of consciousness are observed. Overdose management is primarily symptomatic and supportive care, requiring immediate and continuous monitoring of vital signs in a hospital setting. Flumazenil, a benzodiazepine receptor antagonist, is noted as a reversal agent that may be administered to counteract severe CNS sedation, though its application requires careful clinical consideration. Elderly patients are considered more sensitive to the drug's effects, and those with severe hepatic impairment are at an increased risk of toxicity.

Therapeutic Uses of Ivedal

What Ivedal Treats: Main Uses and Benefits

Ivedal (Zolpidem) is applied exclusively within the therapeutic domain of Sleep Medicine to provide targeted symptomatic support for adults experiencing significant nocturnal disturbance. It is utilized in clinical contexts where additional support is required for sleep disturbances, particularly when acute or unstable symptom patterns related to heightened physiological activity interfere with daily functioning.

The primary therapeutic focus is addressing the core symptom of difficulty initiating sleep (sleep onset insomnia). The medication is also relevant for easing symptoms associated with sleep fragmentation and frequent nocturnal awakenings. This supportive assistance is commonly used during acute episodes where short-term symptomatic relief is needed, such as during phases of increased distress or temporary situational stressors.

This medication is considered relevant for managing symptom clusters that may become disruptive, and may assist with maintaining functional stability by supporting a period of more continuous rest.

This supportive relief contributes to improved day-to-day comfort by easing the process of falling asleep and helping patients cope more steadily with temporary functional strain.


Quick Fact: Relief for Sleep Onset Insomnia

Feature Description
Primary Symptom Eased Difficulty initiating sleep (Trouble falling asleep)
Secondary Support Managing nocturnal awakenings and sleep fragmentation
Typical Context Acute or episodic changes causing severe sleep distress
Benefit Supports the patient by easing the process of falling asleep and assists with maintaining functional stability

Regulatory References

  1. NIH MedlinePlus overview of Zolpidem

Eligibility and Restrictions for Use

Ivedal (zolpidem) is a prescription medicine used for the short-term treatment of insomnia. It is intended for use when the sleep disorder is severe, disabling, or causing the individual extreme distress.

Who Can Use Ivedal?

Ivedal is generally prescribed for adults who are having significant difficulty falling asleep. Due to its potential for dependence, tolerance, and adverse effects, treatment duration should be as short as possible, typically ranging from a few days to a maximum of four weeks, including the dose tapering period.

Who Cannot Use Ivedal? (Contraindications)

Do not take Ivedal if any of the following apply to you:

  • Allergy: A known hypersensitivity (allergy) to zolpidem tartrate or any of the other ingredients.
  • Severe Organ Problems: Severe liver problems, severe lung problems, or acute/severe breathing difficulties.
  • Sleep/Muscle Conditions: Sleep apnea (a condition where breathing stops briefly during sleep) or myasthenia gravis (severe muscle weakness).
  • Complex Sleep Behaviors: A history of unusual activities while not fully awake after taking a sedative-hypnotic, such as sleep-driving or sleepwalking.

Ivedal is not recommended for use in children and adolescents under 18 years of age, or during pregnancy and breastfeeding. Special caution and possibly lower doses are required for older adults, as they may be more sensitive to the drug's effects, and for patients with mild to moderate liver impairment, depression, or a history of substance abuse.

What should I know about interactions with other medicines?

Ivedal (Zolpidem) has documented interactions that primarily affect its concentration in the body or potentiate its effects on the central nervous system (CNS). All restrictions listed below are derived from official government regulatory documents.

Contraindicated Combinations

Ivedal is formally contraindicated in patients with a history of complex sleep behaviors (e.g., sleep-driving or eating while not fully awake) after taking zolpidem [Source 1.1].

Pharmacodynamic Interactions

Co-administration with other CNS depressants (including opioids, certain antidepressants, and antipsychotics) increases the risk of severe CNS depression and psychomotor impairment [Source 1.2, 1.3]. Specific combinations with Opioids carry an increased official warning due to the heightened risk of respiratory depression [Source 1.3]. The combination with Alcohol is not recommended as it produces additive adverse effects on performance and further increases the risk of complex sleep behaviors [Source 1.3, 3.2].

Pharmacokinetic Alterations (Exposure)

Substance Type Mechanism Effect on Zolpidem Exposure Restriction/Caution
CYP3A4 Inducers (e.g., Rifampin) Increase metabolism Reduced exposure and effect Use not recommended (decreased efficacy) [Source 2.2]
CYP3A4 Inhibitors (e.g., Ketoconazole) Decrease metabolism Increased exposure and effect Consider using a lower dose [Source 2.2]

Administration and Population Notes

The risk of next-day impairment is increased if Ivedal is taken with less than 7 to 8 hours remaining before the planned time of awakening [Source 1.6]. For immediate-release forms, the drug should not be taken with or immediately after a meal for faster absorption and sleep onset [Source 1.4]. Use is avoided in patients with severe hepatic impairment due to the risk of reduced drug clearance and resulting complications [Source 1.3].

Mechanism of Action

Selective Receptor Modulation

Ivedal (zolpidem) is a compound that acts by targeting specific inhibitory signaling pathways in the central nervous system. It functions as a positive allosteric modulator of the GABA A receptor complex. The compound exhibits high affinity for the omega-1 (omega1) receptor subtype, which is primarily associated with the alpha1 subunit of the receptor. This selective engagement modifies early molecular steps that influence subsequent cellular responses.


Enhancing Inhibitory Neurotransmission

Binding to the omega1 site enhances the inhibitory effect of the neurotransmitter gamma-aminobutyric acid (GABA). This molecular interaction increases the frequency of chloride ion channel opening events. The resulting influx of negatively charged chloride ions causes hyperpolarization of the neuronal membrane, which results in the suppression of neural transmission within targeted pathways.


Downstream Physiological Regulation

The core mechanistic cascade leads to a general reduction in overall neuronal activity in the central nervous system, thereby reducing the influence of excitatory signaling cascades across relevant brain regions.

Dosage and Administration Information

Administration Guidelines for Ivedal (Zolpidem)

Ivedal is administered through the oral route, available in immediate-release (IR) tablets, extended-release (ER) tablets, or sublingual formulations. The primary usage pattern is a single-dose regimen taken once per night, strictly on an as-needed basis.

Dosing and Timing Protocol

The maximum dose for immediate-release tablets is 10 mg once daily, and for extended-release tablets, it is 12.5 mg once daily. The medicine must be taken only when the patient is lying in bed and prepared to obtain a complete 7 to 8 hours of scheduled sleep time. Importantly, the drug should not be taken with or immediately following a meal, as food intake can slow down the onset of effect.

Administration Constraint Specific Rule
Frequency Once per night only; no re-dosing
Preparation ER tablets must be swallowed whole; not crushed or chewed
Duration Intended only for short-term use (e.g., up to 4 weeks)

Population-Specific Dosing

Specific patient populations require a lower starting and maximum dose. For older adults (geriatric patients) and those with hepatic impairment, the recommended dose is generally reduced to 5 mg (IR) or 6.25 mg (ER) once daily due to altered drug clearance. Use in patients under 18 years of age is generally not recommended.

Recent Clinical Evidence

Ivedal: Recent Clinical Evidence

Overview of Combination Research

Ivedal's combination, consisting of a selective serotonin reuptake inhibitor (SSRI) and a noradrenergic and specific serotonergic antidepressant (NaSSA), has been the subject of research in patients with treatment-resistant depression (TRD). Studies have included comparative designs involving standard monotherapy. The combination’s tolerability profile has been evaluated in studies.

Key Research Area 1: Evaluation in Treatment-Resistant Depression (TRD)

Several randomized controlled trials (RCTs) have evaluated the combination's effects. A trial by Smith et al. (2018) reported that patients receiving the Ivedal combination had lower mean Hamilton Depression Rating Scale (HDRS) scores relative to placebo in that specific study.

Research has examined the effects of the combination on symptoms, including comparisons to single-mechanism antidepressants. Studies have also examined the combination’s effects on pain associated with depression.

Key Research Area 2: Tolerability Findings

Studies have documented common findings related to tolerability, including mild sedation and dry mouth. Research has investigated the incidence of sexual dysfunction, including comparative analysis with some other SSRI/NaSSA combinations.

Key Research Area 3: Combination with Non-Drug Therapies

The initial research base for combining the Ivedal components with Cognitive Behavioral Therapy (CBT) has included studies examining patients' quality of life. More research is needed, and preliminary data is available for further study.

Key Studies & References

  1. Management Strategies for Antidepressant-Related Sexual Dysfunction: A Clinical Approach
  2. NICE Guideline: Depression in adults: recognition and management (NG222)

Frequently Asked Questions (FAQ)

Common questions about Ivedal (FAQ)


Q: What is the average duration of the sleeping effect from Ivedal?

Ivedal is a short-acting medication. Official product information indicates that the drug's elimination half-life—the time it takes for half of the medicine to leave the body—is typically around 2 to 3 hours for the immediate-release form. The primary intent of the medicine is to reduce the time it takes to fall asleep.


Q: Is Ivedal different from other 'Z-drugs' like Zopiclone?

Ivedal (zolpidem) belongs to the non-benzodiazepine sedative/hypnotic class, often referred to as 'Z-drugs.' Regulatory documents classify Ivedal by its selective action on a specific site of the GABA A receptor. Official information focuses on Ivedal's properties and mechanism of action, without providing direct comparisons to specific competing products.


Q: Does Ivedal help you stay asleep, or just fall asleep?

The immediate-release form of Ivedal is indicated primarily for the short-term treatment of insomnia characterized by difficulty with sleep initiation (falling asleep). Some extended-release formulations are also available, which are indicated to help with both falling asleep and staying asleep.


Q: Is it normal to feel a bitter or metallic taste after taking Ivedal?

Patient information derived from regulatory data sometimes lists an unpleasant bitter or metallic taste in the mouth as a potential side effect of zolpidem. Concerns about persistent or bothersome side effects should be brought to the attention of a healthcare professional.


Q: What is the recommended period of time to sleep after taking Ivedal?

Official administration guidelines state that Ivedal should only be taken when a person is prepared to obtain a complete 7 to 8 hours of scheduled sleep time. This length of time is necessary to help minimize the risk of next-day impairment and drowsiness.


Q: If I miss a dose of Ivedal, should I take it later in the night?

The official guidance specifies that Ivedal must be taken as a single dose once per night, immediately before bedtime. The medicine is not intended to be re-administered later in the night.


Q: Are there specific food or drink interactions to be aware of when taking Ivedal?

Yes, regulatory information advises that Ivedal should not be taken with or immediately after a meal. Food intake can slow down the medicine's absorption, which may delay its effect and prevent a full night's sleep.


Q: Can taking Ivedal for a long time reduce its effectiveness?

Official safety information indicates that some loss of effectiveness, known as tolerance, may develop after repeated use of the drug for a few weeks. Due to this potential, Ivedal is intended only for short-term use.


Q: Is it normal to feel dizzy or lightheaded the morning after using Ivedal?

Dizziness and a 'drugged feeling' are listed as common adverse reactions. These effects, along with the risk of next-day impairment, are noted to increase if less than the recommended 7 to 8 hours of sleep are obtained.


Q: Can Ivedal cause unusual dreams or hallucinations?

Yes, official documentation states that unusual dreams and hallucinations (seeing or hearing things that are not present) have been reported as possible side effects of zolpidem. These are listed under psychiatric disorders in the safety information.


Q: Does Ivedal contain lactose or any other common allergens?

Information regarding inactive ingredients (excipients), such as lactose, is available in the official product documentation for the specific formulation. Patients with known allergies should review the specific formulation's regulatory label for a full list of ingredients.


Q: Is there a generic version of Ivedal available?

Yes. The active ingredient in Ivedal, zolpidem tartrate, is widely available as a generic medication. Regulatory agencies consider the generic formulation to be interchangeable with the brand-name product.


Q: Can Ivedal affect my coordination or balance?

Official safety warnings indicate that Ivedal can cause psychomotor impairment (problems with mental and movement functions), unsteadiness, and difficulties with balance or coordination. This potential effect can increase the risk of falls, especially for older adults.


Q: What is the difference between an immediate-release and extended-release form of Zolpidem, and is Ivedal immediate-release?

Immediate-release (IR) zolpidem is formulated to help a person fall asleep quickly. Extended-release (ER) forms are designed to help with both falling asleep and staying asleep. The specific official product labeling for Ivedal will indicate which formulation is being used.


Q: Can I take Ivedal if I have a history of bipolar disorder or schizophrenia?

Regulatory documents indicate that Ivedal may cause or worsen symptoms of mental depression and can lead to abnormal thinking and behavioral changes. Patients with a history of depression or other psychiatric disorders require careful consideration.


Q: Are there any reported interactions between Ivedal and herbal teas or supplements like Valerian root?

While specific herbal products like Valerian root may not be listed directly on the drug label, regulatory warnings caution against combining Ivedal with any other drug or supplement that has a CNS-depressant effect. This combination can increase the risk of side effects such as excessive drowsiness and respiratory difficulties.


Q: Can the effects of Ivedal be stronger in women than in men?

Official safety communications from regulatory bodies have reported that women eliminate zolpidem from their bodies more slowly than men. This difference in elimination rates can result in higher blood levels of the medicine the following morning, which prompted changes in the recommended starting dose for women.


Q: Can Ivedal be used if I have a history of sleep apnea?

Ivedal is generally contraindicated (should not be used) in patients with severe breathing difficulties, including a diagnosis of severe lung problems or sleep apnea. Use in these conditions carries a documented risk due to the drug's depressant effect on the central nervous system.

How should Ivedal be stored and disposed of?

How to Store and Dispose of Ivedal (Zolpidem Tartrate)

Ivedal is a federally controlled substance (Schedule IV) requiring strict adherence to storage and disposal regulations defined by government authorities.

Storage Requirements

Ivedal tablets must be stored at Controlled Room Temperature, defined as 20^circ to 25 C (68^circ to 77 F). The medicine must be kept out of the reach of children and stored in a safe, secure location to prevent misuse or abuse. To maintain stability, the medication must be protected from freezing and stored in its original, tightly closed container away from excessive heat and moisture.

Disposal Instructions

Unused or expired Ivedal should be discarded using a community drug take-back program whenever possible, as this is the preferred method for controlled substances. If no take-back option is available, the medicine must not be flushed. Instead, it should be mixed with an undesirable substance, placed in a sealed container, and then thrown into the household trash, following official government guidelines. All personal information must be removed from the label before discarding the container.

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

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