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Zolpidem Hexal

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Zolpidem Hexal

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Treatment option: Insomnia, Polysomnography

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.

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Overview of Zolpidem Hexal

Quick Facts

Property Description
Active ingredient Zolpidem tartrate
Form Oral film-coated tablet
Pharmacological class Nonbenzodiazepine Sedative-Hypnotic (Z-drug)
Common use Short-term treatment of difficulty falling asleep
Origin Synthetic imidazopyridine compound

What Type of Medicine is Zolpidem Hexal?

Zolpidem Hexal is a prescription-only pharmaceutical preparation whose active substance is Zolpidem tartrate. It is classified as a sedative-hypnotic agent and, more specifically, a nonbenzodiazepine hypnotic, a category often referred to as a Z-drug. This classification is recognized for its primary function in promoting sleep initiation.

The drug is typically manufactured by Hexal Pharma GmbH as a brand-specific generic version of Zolpidem. As a single-agent product, Zolpidem Hexal delivers its therapeutic effect solely via the Zolpidem molecule. Its Z-drug designation differentiates it from traditional benzodiazepines, indicating a targeted profile for sleep induction.


Zolpidem Hexal: Composition and Origin

The core of the medicine is Zolpidem tartrate, a potent, synthetic compound derived from the imidazopyridine chemical class. Zolpidem Hexal is consistently supplied as a solid dosage form, manufactured as an oral film-coated tablet, and is designed for the oral route of administration.

The compound is characterized by a rapid onset of action. This effect is effective in inducing the required sedation to address difficulties with sleep onset, which is the primary goal of its synthetic composition.


How Does Zolpidem Hexal Aid Sleep?

Zolpidem aids sleep by acting as a short-acting CNS depressant that selectively enhances the brain's natural calming signals. The mechanism involves selectively boosting the inhibitory effects of GABA (gamma-aminobutyric acid) at the GABA-A receptor. This targeted, calming action facilitates a swift transition from a state of heightened wakefulness into a state of sleep, serving the primary therapeutic goal of a hypnotic agent.

Regulatory References

  1. MedlinePlus Drug Information
  2. NCBI StatPearls
  3. DrugBank
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What side effects are possible with Zolpidem Hexal?

The official safety profile for Zolpidem tartrate, as documented by government regulatory agencies, details a range of adverse reactions classified by frequency and system-organ class.

Adverse Reaction Scope

Classification Examples of Reactions Systems Involved
Common (1%–10%) Drowsiness, headache, dizziness, diarrhea, fatigue, nausea, vomiting, back pain. Nervous System, Gastrointestinal, General Disorders
Uncommon (0.1%–1%) Hallucinations, confusion, irritability, aggression, somnambulism (sleepwalking), rash, blurred vision. Psychiatric, Nervous System, Skin
Rare (le0.1%) Liver injury, gait disturbance, fall, libido disorder. Hepatobiliary, General Disorders
Not Known Angioedema, anaphylaxis, abnormal behavior. Immune System, Psychiatric

Serious Adverse Reactions and Safety Constraints

Official labels contain the strongest warnings for Complex Sleep Behaviors (CSBs), which include sleep-driving or preparing food while not fully awake, often resulting in amnesia and carrying a risk of serious injury or death [FDA Drug Safety Communication, 2019]. Severe hypersensitivity reactions such as angioedema (swelling of the throat/tongue) and anaphylaxis have been reported and are considered life-threatening events [FDA DailyMed].

Safety notes specify a risk of next-day impairment (e.g., impaired driving ability) and the potential for rebound insomnia or withdrawal symptoms upon rapid discontinuation [EMA PRAC Assessment]. The medicine is contraindicated in patients with conditions like severe hepatic insufficiency, known hypersensitivity to the drug, or a history of previous CSBs [EMA SmPC]. Additionally, older adults are noted to be especially sensitive to effects like dizziness and unsteadiness, increasing the risk of falls and fractures [FDA DailyMed].

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Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information describes overdose with Zolpidem, alone or in combination with other substances, primarily as severe Central Nervous System (CNS) depression. Immediate medical attention is required for any suspected overdose.

Overdose Manifestations & Outcomes
Documented Presentations: Impairment of consciousness ranging from somnolence (severe drowsiness) to coma. Other findings may include amnesia and neurological symptoms like hallucinations [1.2].
Severe Outcomes: Overdose has been associated with respiratory compromise, cardiovascular compromise, and fatal outcomes, especially in cases involving multiple drug ingestion [3.4].
Immediate Action: Call a doctor or poison control center right away or get emergency help at once for suspected overdose [2.1]. The label advises prescribing the least amount feasible to avoid intentional overdose in patients with suicidal ideation [2.3].

Official Management & Considerations

Management is centered on general symptomatic and supportive measures [3.1]. Continuous monitoring of vital signs, including respiration, pulse, blood pressure, and level of consciousness, is required [3.1].

  • Antidote: The benzodiazepine antagonist Flumazenil may reduce the drug's sedative-hypnotic effects; however, its administration must be managed with caution due to the documented risk of inducing convulsions [4.2].
  • Procedural Note: Hemodialysis is not effective as a measure to remove the drug from the body [3.1].
  • Population Note: Elderly or debilitated patients may be especially sensitive to the effects of Zolpidem, and severe toxicity is noted as increased when co-ingested with other CNS depressants [2.5, 4.2].
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Therapeutic Uses of Zolpidem Hexal

What Zolpidem Hexal Treats: Main Uses and Benefits

Zolpidem Hexal is applied in contexts where additional symptomatic support is needed for managing insomnia in adults, specifically when the condition is debilitating or causing severe distress. Its application is relevant across therapeutic domains including difficulty falling asleep and trouble staying asleep, which involves symptoms that interfere with daily comfort. Primary therapeutic goals include addressing the difficulty of initiating sleep as well as maintaining it.

The medication is generally applied in clinical settings that involve acute or disruptive symptom patterns of severe sleeplessness, relevant in contexts involving heightened systemic burden where functional stability becomes affected. It helps address symptom clusters that may assist in reducing the time required to fall asleep and provides supportive relief during these difficult episodes.

“Applied across domains where additional symptomatic support is needed, this medicine supports a more continuous sleep pattern.”

This provides supportive relief that assists with maintaining functional stability during symptomatic phases of severe sleep deprivation.


Quick Fact: Symptomatic Management for Severe Sleep Disturbances

The medication is relevant in conditions characterized by periods of heightened symptoms, offering support that helps ease the overall symptom load.

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Eligibility and Restrictions for Use

The eligibility for using Zolpidem Hexal is strictly defined by regulatory authorities and is determined by a patient’s age, pre-existing health conditions, and medical history. The medicine is approved only for use in Adults aged 18 and over.

Contraindicated Populations

The medicine must not be used in patients with the following formal contraindications:

  • Known Hypersensitivity to Zolpidem tartrate or any component of the formulation.
  • Severe Hepatic Insufficiency (severe liver failure), due to the risk of precipitating encephalopathy.
  • Acute and/or Severe Respiratory Insufficiency/Depression.
  • Myasthenia Gravis or Obstructive Sleep Apnoea Syndrome.
  • A documented history of complex sleep behaviors (such as sleep-driving or sleep-walking) after taking Zolpidem.

Restricted and Non-Recommended Use

Population Category Regulatory Status
Pediatric Population (Under 18) Not Recommended: Safety and effectiveness have not been established due to a lack of data.
Elderly/Debilitated Patients Use with Caution: Restricted use is required, often necessitating a lower starting dose due to increased sensitivity and risk of impaired performance or falls.
Pregnancy and Lactation Not Recommended: Use is generally discouraged during pregnancy, especially the third trimester, and during breastfeeding due to the risk of infant exposure.
Hepatic Impairment (Mild/Moderate) Use with Caution: Requires restricted use due to reduced drug clearance, necessitating a lower initial dose.
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What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for zolpidem is primarily structured around two critical areas: the risk of additive Central Nervous System (CNS) depression and potential changes in drug concentration due to metabolism-related interactions.


Documented Interacting Categories and Products

Interactions requiring specific caution or restrictions are documented for the following categories and products:

  • CNS Depressants: Co-administration with other CNS depressants, including opioids, certain antipsychotics, anxiolytics, antidepressants (e.g., Fluvoxamine, Ciprofloxacin), and alcohol, may cause additive effects, such as increased drowsiness, sedation, and a higher risk of respiratory depression and complex sleep behaviors.
  • CYP3A4 Modifiers: Zolpidem is metabolized by the enzyme CYP3A4. Strong inhibitors of this enzyme, such as Ketoconazole, can increase the concentration and effect of zolpidem, whereas strong inducers, such as Rifampin or the herbal remedy St. John's wort, can decrease its efficacy.

Regulatory Constraints

Official regulatory documents establish constraints based on the resulting practical implication:

  • Avoidance: Concomitant use with alcohol is strongly advised against due to significantly increased risk of adverse effects. Certain combinations, like those with Fluvoxamine or Ciprofloxacin, may be non-recommended due to high potential for increased zolpidem exposure.
  • Required Monitoring/Adjustment: Co-administration with other CNS depressants requires close clinical monitoring for signs of excessive sedation or respiratory compromise. Dosage adjustments of zolpidem or the co-administered drug may be necessary when combined with CYP3A4 inhibitors or inducers.
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Mechanism of Action

Targeting the GABA-A Receptor and Inhibitory Signaling

Zolpidem Hexal's primary action occurs within the central nervous system, where it selectively targets the mathbfGABAA receptor complex, particularly those containing the mathbfalpha1 subunit. The drug acts as a Positive Allosteric Modulator (PAM), binding to a distinct site on the receptor to enhance the effects of the brain's main inhibitory neurotransmitter, GABA (gamma-aminobutyric acid).

Modulating Central Nervous System Activity

By potentiating the GABA signal, the drug causes the GABAA receptor's central ion channel to open more frequently, facilitating an increased influx of chloride ions into the neuron. This surge of negative charge leads to hyperpolarization of the nerve cell membrane, which suppresses neuronal firing. This mechanistic cascade results in a widespread reduction in neuronal excitability across the cerebral cortex, effectively dampening signal transmission in brain regions associated with wakefulness.

Producing Systemic Cortical Inhibition

The combined effect of targeted alpha1 subunit modulation and enhanced central inhibition leads to the physiological state of cortical inhibition. This mechanistic domain involves the rapid and pervasive suppression of hyperexcitability, which constitutes the drug's influence on the body's natural processes governing arousal and consciousness.

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Dosage and Administration Information

The administration of Zolpidem involves specific protocols regarding the route, timing, and duration of use. As an immediate-release oral product, the medicine is taken by swallowing the film-coated tablet whole; it is not intended to be crushed, split, or chewed.

Standard dosing is typically 5 mg or 10 mg for non-elderly adults, with the dose chosen being the lowest effective amount necessary. Regardless of the starting dose, administration is restricted to a maximum of 10 mg in any single 24-hour period.

Administration follows a once-daily pattern and is intended for use immediately before or when the individual is in bed and prepared for sleep. The single dose must not be readministered at any point during the night. A period of at least 7 to 8 hours is necessary before the planned time of awakening to comply with the use protocol. Taking the dose with or immediately following a meal may slow the onset of effect.

Use is restricted to short-term treatment only, with the total duration, including any tapering period, not recommended to exceed four weeks. Furthermore, dose adjustments are specified for specific groups: the starting dose is 5 mg once daily for older adults and for individuals with mild to moderate impairment of liver function.

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Recent Clinical Evidence

Research Evidence: Overview of Studies for Zolpidem Hexal

This section is designed to provide context regarding the research that was studied for the evaluation of this medicine. The findings describe group patterns, not personal outcomes, and reflect the specific conditions under which the studies were conducted. Research does not determine whether an individual will respond similarly to the patterns observed, and it is important to understand the areas where evidence is limited or still emerging.

Evidence for Use in Short-Term Insomnia (Adults)

The core evidence base for this medicine was evaluated in a series of short-term, randomized, controlled clinical trials (RCTs). These trials involved adults and were used in research exploring how symptoms change over time, typically over a period of up to four weeks. The studies monitored several types of outcomes related to sleep continuity or disturbances, including objective measures like the time it took patients to fall asleep and the time spent awake after initially falling asleep. The clinical trials generally reported patterns of difference in these sleep parameters compared to inactive placebo pills. Studies report how symptoms evolved in the observed populations during the defined time intervals.

Evidence for Use in Older Adults

Specific research was evaluated in older populations, typically patients aged 60 years and older. In addition to monitoring standard sleep measures, research examined outcomes reflecting daily functioning and potential changes in systemic or functional imbalance, such as the risk of dizziness and balance impairment. The studies reported that while patterns related to changes in sleep were observed, the use of this medicine was associated with balance dysfunctions and an association with fall-related events was observed in some studies. This evidence helps contextualize potential functional issues that were observed in studies.

Long-Term Studies and Follow-Up Data

Since insomnia involves periods of heightened symptoms that can persist, some research was studied for longer periods extending up to approximately 6 to 8 months. These extended trials utilized patient-reported outcomes to examine whether measured patterns were maintained throughout the observation periods. Studies report how symptoms evolved in the observed populations, indicating that measured patterns can be maintained throughout the observation periods in certain extended-duration studies. However, it is important to note that the follow-up durations were limited in high-quality controlled settings.

Research on Functional and Next-Day Outcomes

A key area of research examined next-day performance using laboratory settings and tasks designed to monitor a person’s level of alertness, memory, and motor skills. Data show patterns related to residual effects the following day, which may include decreased mental alertness or slower reaction times, even if an individual reports perceived rest. Studies have described patterns where outcomes related to complex psychomotor activity were associated with the medicine's use, particularly when research examined temporary physiological imbalance.

What is Still Uncertain About Zolpidem Hexal Research

It is essential to recognize the areas where research remains incomplete. The evidence quality varies across studies concerning functional outcomes, and findings were mixed on certain measures of next-day cognitive performance. Data for certain groups remain insufficient, such as those with certain comorbidities not well-represented in the main trials. Furthermore, research is ongoing, and the long-term effects are not fully established; thus, data for certain groups remain insufficient. This highlights that while research has provided context, the full scope of the evidence landscape is still developing.

Key Studies & References

  1. Zolpidem (StatPearls - NCBI Bookshelf)
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Frequently Asked Questions (FAQ)

Common questions about Zolpidem Hexal (FAQ)


Q: How quickly does Zolpidem Hexal start to work after taking it?

A: Official studies and prescribing information indicate that the medication starts working quickly, often reaching its effect within about 30 minutes after being taken. The concentration in the blood typically peaks within 1.5 to 2 hours. This rapid action supports the goal of helping with sleep initiation.

Q: How long does the effect of Zolpidem Hexal usually last?

A: The immediate-release form of zolpidem has a short elimination half-life, generally around 2 to 3 hours in non-elderly adults. This duration is consistent with the protocol that specifies allowing for at least 7 to 8 hours of time remaining before the planned time of awakening, aiming to minimize residual sleepiness the following day.

Q: Can Zolpidem Hexal be taken with over-the-counter pain relievers?

A: Official regulatory documents do not list common, non-sedating over-the-counter pain relievers as a specific restriction. However, caution is advised when combining zolpidem with any medication that causes Central Nervous System (CNS) depression, as this may increase the risk of excessive sedation and side effects. The full spectrum of potential interactions is detailed in the official prescribing information.

Q: Are there any food or drinks that should be avoided when taking Zolpidem Hexal?

A: Yes. Official documents strongly advise against combining zolpidem with alcohol due to the significantly increased risk of serious adverse effects. Additionally, taking the tablet with or immediately after a meal may slow down the time it takes for the medication to start working, potentially delaying the desired sleep onset.

Q: What is known about the use of Zolpidem Hexal during pregnancy or breastfeeding?

A: Official prescribing information states that the use of zolpidem is generally discouraged during pregnancy, particularly in the third trimester, and throughout the period of breastfeeding. This restriction is due to the potential for adverse effects and the risk of exposure to the infant.

Q: Can other prescription medicines, like antidepressants, interact with Zolpidem Hexal?

A: Yes. The official interaction profile classifies certain prescription medicines, including many antidepressant agents and antipsychotics, as Central Nervous System (CNS) depressants. Co-administration may lead to additive effects, such as increasing drowsiness and sedation, and typically requires clinical monitoring, as documented in regulatory guidelines.

Q: What is 'rebound insomnia' and is it associated with Zolpidem Hexal?

A: Rebound insomnia is described as a temporary worsening of sleep problems upon stopping a sleep medication. Official safety notes specify a risk of this effect, which may be more severe than the original insomnia, upon the rapid discontinuation of zolpidem. Due to this risk, the discontinuation process is recommended to be gradual.

Q: Can Zolpidem Hexal cause dizziness or lightheadedness?

A: Yes. Dizziness is listed as a common adverse reaction in official safety documents. Some official sources also note that zolpidem may cause people to feel lightheaded or unsteady, which is a particular concern for older adults due to the increased risk of falls.

Q: Is Zolpidem Hexal the same as regular Zolpidem?

A: Zolpidem Hexal is a specific generic version of the medicine whose active ingredient is Zolpidem tartrate. As a generic product, it is manufactured to meet the same quality, strength, purity, and performance standards, meaning it delivers the same active ingredient as the original brand-name drug.

Q: Is it possible to feel groggy or tired the day after taking Zolpidem Hexal?

A: Yes. The official safety notes include a risk of next-day impairment, which may manifest as feeling drowsy, groggy, or having decreased mental alertness. This risk increases significantly if a patient does not allow for a full 7 to 8 hours of sleep after taking the dose.

Q: Is it normal to have vivid dreams while taking Zolpidem Hexal?

A: Some individuals have reported experiencing unusual dreams or vivid dreams in clinical and post-marketing settings. The official adverse reaction scope lists Hallucinations as an uncommon side effect, which may be related to disturbed sleep states associated with the medication's effects.

Q: What is the difference between Zolpidem Hexal and Zaleplon or Eszopiclone?

A: All three are classified as nonbenzodiazepine sedative-hypnotics (Z-drugs). Their primary differences are in their chemical structure and their pharmacokinetic profile (how quickly they are eliminated from the body). This profile influences whether a drug is intended mainly for falling asleep or for staying asleep.

Q: Can Zolpidem Hexal cause a metallic taste in the mouth?

A: Official safety documents list Taste Perversion or Taste Disorder as reported side effects based on post-marketing data. This can include the experience of an unusual, such as a metallic or bitter taste, in the mouth.

Q: Does the shape or color of the tablet for Zolpidem Hexal mean anything different?

A: Yes. The color, shape, and any markings imprinted on a tablet are standardized features used by the manufacturer and regulators. They serve to identify the specific dosage strength (e.g., 5 mg versus 10 mg) and to confirm the specific medicine or manufacturer.

Q: Can Zolpidem Hexal be taken for anxiety or general nervousness?

A: No. Official prescribing information states that the medicine is indicated solely for the short-term treatment of insomnia characterized by difficulties with sleep initiation. It is not approved or recommended for the treatment of anxiety or general nervousness.

Q: What happens if a dose of Zolpidem Hexal is taken later than usual?

A: The administration protocol requires the dose to be taken only when a patient is ready for sleep and can allow for at least 7 to 8 hours of time remaining before the planned time of awakening. Taking the medicine later than usual may violate this protocol, increasing the risk of next-day impairment and drowsiness.

Q: Does Zolpidem Hexal lose its effectiveness over time?

A: Zolpidem is only approved for short-term use because the effectiveness of the drug may decrease (a process called tolerance) if it is taken repeatedly over longer periods. Clinical studies typically examine effects only up to four to five weeks, and the official use is restricted to short-term treatment.

Q: Is it necessary to stop taking Zolpidem Hexal gradually?

A: Official safety notes warn of the potential for rebound insomnia and withdrawal symptoms upon rapid discontinuation. Therefore, official instructions note that a gradual discontinuation process is recommended to minimize these effects.

Q: What happens if I forget to take my Zolpidem Hexal?

A: Zolpidem is intended to be taken only once, immediately before or when in bed for a full night's sleep. If a dose is missed, and the patient is no longer ready for sleep, the dose is generally omitted, and administration is not permitted at any other time during the night.

Q: Can Zolpidem Hexal cause changes in appetite or weight?

A: Official safety documents list Appetite disorder as a potential adverse reaction reported in clinical trials. However, the direct relationship between the drug and significant weight changes is generally not established in the most common side effect profiles.

Q: Does taking Zolpidem Hexal lead to changes in sleep architecture?

A: Research studies have specifically investigated the effect of zolpidem on sleep architecture, which is the natural cycling through different sleep stages (like REM and non-REM). These studies generally report that zolpidem selectively targets sleep onset with less impact on the normal structure of sleep compared to older hypnotic drugs.

Q: Is Zolpidem Hexal ever prescribed for conditions other than insomnia?

A: Official regulatory documents indicate that zolpidem is approved and prescribed only for the short-term treatment of insomnia characterized by difficulties with sleep initiation. Use for any other medical condition is considered non-indicated.

Q: Are the safety profiles of the various Zolpidem products (Hexal vs others) similar?

A: Because all immediate-release zolpidem products, including Zolpidem Hexal, contain the same active ingredient and meet the same regulatory standards for bioequivalence, their core safety, side effect, and efficacy profiles are considered to be generally similar.

Q: Can Zolpidem Hexal be used to help with jet lag?

A: Official labeling indicates that zolpidem is approved only for the short-term treatment of insomnia characterized by difficulty falling asleep. Jet lag is not listed as an approved or indicated condition for use in the prescribing information.

Q: Is it common for people to report unusual fatigue with Zolpidem Hexal?

A: Fatigue is listed as a common adverse reaction in official documents, meaning it has been reported in 1% to 10% of patients in clinical trials. Reports of next-day impairment, which can feel like unusual tiredness, are also a noted safety precaution.

Q: Do studies support the long-term use of Zolpidem Hexal?

A: The official indication limits use to short-term treatment (not exceeding four weeks). While some research was conducted for longer periods, the evidence notes that follow-up durations were limited in high-quality controlled settings, and the long-term effects are not fully established.

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

A: Official safety notes warn of severe hypersensitivity reactions (allergic reactions) that require immediate medical attention. Signs of a serious reaction include swelling of the face, tongue, or throat (angioedema), and difficulty breathing.

Q: Does having kidney problems affect how Zolpidem Hexal is used?

A: Based on pharmacokinetic studies, the official prescribing information states that no dosage adjustment is typically necessary for patients with compromised kidney function (renal impairment). The drug is primarily cleared by the liver, not the kidneys.

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How should Zolpidem Hexal be stored and disposed of?

How to Store and Dispose of Zolpidem Hexal

Official storage and disposal instructions are defined by regulatory agencies to maintain product stability and ensure public safety.

Storage Requirements

Storage Component Official Requirement
Temperature Store at controlled room temperature, typically 20 C to 25 C (68 F to 77 F).
Security Keep out of the sight and reach of children and in a safe place due to its classification as a Schedule IV Controlled Substance.
Handling Do not freeze and protect the medicine from excessive heat and moisture.

Disposal Requirements

For unused or expired tablets, the preferred method of disposal is a drug take-back program or authorized collector. If a take-back program is unavailable, the medicine should be mixed with an undesirable substance (e.g., used coffee grounds), placed in a sealed container, and then discarded in the household trash. The medication must not be flushed down a toilet or poured down a sink.

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

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