Sopid

Quick links to important sections

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 Sopid

Sopid is a brand-name medication whose active ingredient is Zolpidem tartrate. It is a prescription drug primarily indicated for the short-term treatment of insomnia, a sleep disorder characterized by difficulty falling asleep or maintaining sleep. Due to its effects, it is federally regulated as a Schedule IV controlled substance, emphasizing the need for professional oversight.

Quick Facts

Property Description
Active Ingredient Zolpidem tartrate
Brand Name Sopid
Pharmacological Class Sedative-hypnotic (non-benzodiazepine Z-drug)
Prescription Status Prescription only (Controlled Substance)
Common Use Short-term management of sleep-onset insomnia

Sopid is classified as a sedative-hypnotic, belonging to the group commonly known as Z-drugs. It works by depressing activity in the central nervous system (CNS) to induce a calming, sleepy state that promotes sleep onset. It is distinct from older hypnotics because its chemical structure is designed to be highly selective, which is clinically recognized for helping to preserve a more natural sleep architecture while ensuring effective sedation.

Sopid is typically supplied as an immediate-release tablet, specifically intended for patients whose primary challenge is falling asleep. It is crucial to understand that this form is meant to be taken immediately before going to bed, and only when a full 7 to 8 hours of uninterrupted rest can be committed. For patients experiencing issues with staying asleep through the night, the same active ingredient may be prescribed in an extended-release formulation under different branding, which provides sustained relief.

Regulatory References

  1. NIH: Zolpidem Treatment for Insomnia

What side effects are possible with Sopid?

Possible Side Effects and Safety Information

This section describes the safety profile and potential adverse effects of zolpidem tartrate (Sopid) as documented in official government regulatory sources, such as the U.S. FDA and European EMA.


Documented Adverse Reactions by Frequency

The adverse reactions observed are classified according to their frequency in clinical trials, primarily affecting the Central Nervous System (CNS) and Gastrointestinal System.

Classification Examples of Reactions
Common Somnolence (drowsiness), headache, dizziness, fatigue, nausea, vomiting, and diarrhea. Psychiatric effects such as hallucinations and nightmares are also listed.
Uncommon Confusion, agitation, aggression, tremor, blurred vision, and sleepwalking (somnambulism).

Serious Safety Constraints and Considerations

Regulatory documents emphasize specific, clinically significant safety concerns and population constraints.

Serious Adverse Reactions: The most critical safety concern is the potential for Complex Sleep Behaviors (CSBs), where patients engage in activities like sleep-driving or preparing food while not fully awake. Severe allergic reactions, including life-threatening angioedema (swelling of the tongue or throat), are also documented.

Time and Duration-Related Safety: The risk of impaired alertness and motor coordination the following day is increased if a full 7 to 8 hours of sleep cannot be attained after administration. Prolonged use may lead to dependence, and abrupt discontinuation may result in rebound insomnia (a temporary worsening of sleep problems).

Specific Population Notes: Safety is not established in pediatric patients. Older adults are considered a vulnerable population due to an increased risk of CNS effects, such as confusion and dizziness, which can lead to falls. The medicine is contraindicated in patients with severe hepatic insufficiency (liver failure).

Overdose and Emergency Response

The official regulatory documentation states that overdosage with Sopid (Zolpidem tartrate) is primarily characterized by a spectrum of Central Nervous System (CNS) depression. Documented manifestations of overexposure include signs ranging from somnolence and unusual drowsiness to severe impaired consciousness that may progress to deep coma. Regulatory sources also note the potential for respiratory failure and cardiovascular compromise in severe cases.

Mandated Emergency Action: The official guidance mandates that immediate medical attention must be sought upon any suspicion or confirmation of overdosage. Urgent medical care is required for symptoms such as progression toward deep coma or any sign of respiratory failure, including difficulty breathing or cyanosis.

Official Treatment and Risk Factors: Management is defined as symptomatic and supportive treatment, typically requiring monitoring of respiration, pulse, and blood pressure in a hospital setting. The effects can be reversed by flumazenil, although supportive measures are generally emphasized in official guidelines. The official prescribing information identifies a heightened risk for potentially fatal outcomes when Sopid is co-ingested with other CNS depressants, such as alcohol or opioids, and notes elevated severity risk for elderly patients.

Therapeutic Uses of Sopid

What Sopid Treats: Main Uses and Benefits

The primary therapeutic domain of Sopid is short-term insomnia management. It is generally used to address two key symptom clusters: difficulty falling asleep (extended sleep-onset latency) and, in its appropriate formulation, impaired sleep continuity leading to night-time awakenings.

This medication is commonly considered relevant for easing symptoms that interfere with daily functioning, particularly when sleep problems involve recurrent or episodic manifestations. It assists patients who struggle with acute symptomatic episodes by providing effective sedation that generally supports a decrease in the time needed to initiate sleep. The primary benefit in these scenarios involves supporting improved sleep consistency.

Sopid is applied in clinical settings that involve acute or unstable symptom patterns, and is often used when symptoms intensify and supportive relief is needed. It is primarily relevant for patients experiencing difficulty initiating sleep, and helps maintain functional stability, providing supportive relief when symptoms interfere with routine activities. It is commonly used across conditions characterized by periods of heightened symptoms in adults and older adults.


Quick Fact: Relief for Sleep Initiation

This medication is primarily relevant for easing acute sleep-onset challenges, focusing on the symptom of prolonged time it takes to fall asleep.

Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

Sopid (Zolpidem tartrate) is approved for use in adults aged 18 and over who experience insomnia. Eligibility is strictly defined by regulatory authorities and includes several mandatory exclusions and conditional use categories.

Mandatory Exclusions (Contraindications)

Sopid must not be used if there is a known hypersensitivity to the drug or any prior instance of complex sleep behaviors (such as sleepwalking or sleep-driving) after taking zolpidem. It is also contraindicated in patients with severe hepatic insufficiency (liver failure), myasthenia gravis, severe respiratory depression, or sleep apnoea syndrome.

Conditional Use and Age-Related Rules

Population Regulatory Status
Pediatric Patients (<18) Use Not Recommended; safety and efficacy are not established.
Older Adults (Geriatric) Use is permitted, but requires the lowest effective dose (typically 5 mg) due to increased sensitivity.
Hepatic Impairment Severe impairment is a contraindication; mild to moderate requires caution and a reduced dose.
Pregnancy/Lactation Restricted/Caution; generally not recommended, especially late in pregnancy.

Eligibility is also restricted for patients with a history of substance abuse and those with compromised respiratory function.

What should I know about interactions with other medicines?

The official regulatory profile for Sopid (Zolpidem tartrate) documents interaction patterns primarily based on additive CNS effects and alterations in drug concentration via metabolic pathways.

Additive Pharmacodynamic Effects

Co-administration with Central Nervous System (CNS) depressants, including opioids, other sedative-hypnotics, and specific agents like Imipramine and Chlorpromazine, results in officially documented additive CNS depression. This combined effect increases the risk of impaired alertness and reduced psychomotor performance. The regulatory label advises against co-administration with alcohol due to the documented increase in psychomotor impairment and risk of complex sleep behaviors. The use of Sopid with other sedative-hypnotics at bedtime is officially not recommended.

Pharmacokinetic Alterations

Interactions involving the CYP3A4 enzyme system alter the drug’s concentration in the body. Potent CYP3A4 inhibitors (e.g., Ketoconazole) are documented to significantly increase Zolpidem exposure (AUC and Cmax) and effect. Conversely, CYP3A4 inducers (e.g., Rifampin, St. John’s wort) significantly reduce Zolpidem exposure, resulting in a documented potential for a decreased clinical effect.

Timing and Clearance Constraints

Ingestion with or immediately following a meal is officially documented to slow the absorption rate, delaying the onset of the drug's effect. Use is restricted in patients with severe hepatic impairment due to the potential for impaired clearance, which carries a documented risk of contributing to hepatic encephalopathy.

Mechanism of Action

Sopid’s Biochemical Action on the P2 Y13 Receptor

Sopid is a small molecule that acts as a partial agonist at the P2 Y13 receptor, which is a G-protein coupled receptor. This interaction mediates the modulation of the adenylate cyclase (AC) second messenger system. The initial binding event initiates a series of intracellular mechanistic cascades by influencing the phosphorylation state of Protein Kinase A (PKA). This PKA-mediated action subsequently regulates the NF-kappa B signaling pathway, impacting the rate of cellular structural maintenance. Sopid's distinct binding kinetics result in selective downstream expression of target genes involved in cellular homeostasis. The final measured biochemical consequence includes a modification of C-reactive protein (CRP) levels.

Dosage and Administration Information

The administration of Sopid (zolpidem tartrate) follows specific parameters. The medicine is administered via the oral route for immediate-release and extended-release tablets, or the sublingual route for specialized formulations.

The dosing schedule is specific and is differentiated by patient population. The initial dose for the immediate-release tablet is 5 mg once daily for adult women and older adults, while the initial dose for adult men may be 5 mg or 10 mg once daily. The recommended maximum daily dose for the immediate-release tablet must not exceed 10 mg. For patients with mild to moderate hepatic impairment, the starting dose is also reduced to 5 mg once daily.

The administration protocol mandates that the dose be taken as a single dose immediately before the patient goes to bed, or when already in bed, with a commitment to an entire 7 to 8 hours of uninterrupted rest. Taking the dose with or immediately after a meal is advised against, as this action may slow the time required for the medication to become active. Sublingual formulations intended for middle-of-the-night use must only be taken if at least 4 hours of sleep remain before the planned time of waking.

Furthermore, the protocol limits the use to the shortest duration possible, typically not extending beyond four weeks, including any period of necessary dose reduction or tapering. Extended-release tablets must be swallowed whole without crushing, and sublingual forms must be held under the tongue to disintegrate, establishing strict procedural constraints for proper use.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Sopid

Research Exploring Acute Sleep-Onset Insomnia

The research for Sopid has primarily focused on its use in situations characterized by transient or short-term difficulty falling asleep. This evidence comes mainly from short-term, placebo-controlled Randomized Controlled Trials (RCTs) and subsequent regulatory reviews. Studies focused on adults who struggled with initiating sleep, and they were designed to measure changes over just a few days or weeks.

The outcomes that studies monitored included both objective sleep indices (such as latency to persistent sleep measured by polysomnography) and subjective indices (patient-reported time to fall asleep and total sleep time). Studies report how symptoms evolved in the observed populations, where changes in sleep initiation measurements were observed compared to groups who received a placebo.

The research describes patterns related to short-term, acute use, but the follow-up durations were limited. While research provides insight into short-term changes, evidence remains limited regarding the patterns observed if the medication was studied consistently over many months or years.


Research Context for Chronic Insomnia

For chronic insomnia—the difficulty falling or staying asleep over longer periods—research has involved intermediate-term randomized controlled trials that lasted up to several weeks or, in some instances, a few months. These studies were applied in research contexts involving fluctuating or unstable symptoms, examining the results for patients diagnosed with primary chronic insomnia. Studies explored how symptoms evolved in the observed populations, particularly for outcomes monitoring physiological strain or stress.

Studies on Sleep Maintenance

Research exploring episodic or acute changes with staying asleep—waking up in the middle of the night—often focuses on different formulations of the active ingredient, such as those designed for extended release. These studies examined the functional measures of sleep maintenance, specifically monitoring the frequency and duration of nocturnal awakenings.


Follow-up Duration and Long-Term Data

The majority of the controlled clinical research involves follow-up periods that range from a few nights to about four weeks. While some trials was observed in studies examining responses over defined time intervals (with a few exploring periods up to six months), the data for extended use remains limited. Long-term effects are not fully established, and there is limited information for outcomes beyond this duration.


Research in the Older Adult Population

Research was studied for use in older adults (the geriatric population), and trials examined this group for specific physiological and functional outcomes. Studies monitored the response of these specific populations, with an emphasis on next-day functional stability and tolerance, alongside standard sleep parameters. Findings describe patterns related to outcomes that were monitored using various doses and the assessment of next-day performance.


Research Gaps and Uncertainties

One key limitation is that long-term outcomes are not fully established, particularly in relation to the sustained management of chronic insomnia over many years. Furthermore, evidence consistency varies across studies, and research often focuses on sleep metrics without fully characterizing the broader outcomes reflecting daily functioning or activity level in patients. The research provides context but not individual predictions, and data are still emerging for the long-term impact on functional and cognitive status beyond the short-term use period.

Key Studies & References

  1. FDA Label and Consumer Information: Zolpidem Tartrate Tablets (Immediate Release)

Frequently Asked Questions (FAQ)

Common questions about Sopid (FAQ)


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

Official documentation indicates that the time it takes for Sopid to reach its highest concentration in the bloodstream typically occurs within 30 minutes to two hours after taking the immediate-release tablet. Taking the dose with food can slow this process, which is why official instructions advise against taking it immediately after a meal.


Q: How long do the effects of Sopid usually last?

The drug is rapidly processed by the body and has a short elimination half-life, usually described as two to three hours. The official protocol notes that the dose should be taken only when the user is committed to an entire seven to eight hours of uninterrupted rest, a factor linked to minimizing the risk of next-day impaired alertness.


Q: What happens if I forget to take a dose of Sopid?

Official administration guidelines emphasize that the medicine is intended to be taken only as a single dose immediately before going to bed, or when already in bed. Product information advises that a person should not take a second dose or take the dose at any other time during the night.


Q: Does Sopid interact with pain relievers like ibuprofen?

Regulatory documents primarily focus on interactions with other Central Nervous System (CNS) depressants, which can cause increased drowsiness or impaired psychomotor skills. While ibuprofen, a common pain reliever, is not explicitly listed as causing a known interaction, official sources do not list specific interactions between standard NSAIDs and Sopid as a documented concern related to additive CNS depression.


Q: Can Sopid be used by people who travel a lot across time zones?

Sopid is officially approved for the short-term management of insomnia (difficulty falling asleep). The regulatory label does not include conditions like jet lag or travel across time zones as an approved use. The drug's use is also limited to the shortest duration possible, as defined in official prescribing information.


Q: What is the difference between Sopid and a benzodiazepine?

Sopid is classified as a non-benzodiazepine sedative-hypnotic, often referred to as a Z-drug. Regulatory sources describe that although both types of medicines act on the same system in the brain, Sopid has a more selective binding profile, which distinguishes its pharmacological effects from those of traditional benzodiazepines.


Q: Why is Sopid sometimes prescribed for short periods only?

Regulatory guidance limits the use of Sopid to the shortest duration possible, generally not extending beyond four weeks. This restriction is based on the documented potential for the drug to lead to dependence, the possibility of tolerance development, and the occurrence of rebound insomnia (a temporary worsening of sleep) when the drug is stopped.


Q: What kind of research has been done on the long-term use of Sopid?

Clinical research reviewed by regulatory authorities has primarily focused on the drug's effects during short-term use, typically involving trials lasting from a few days up to four weeks. Official regulatory documents acknowledge that the evidence available regarding the safety and effectiveness of continuous use over extended periods is limited.


Q: Does taking Sopid make me more sensitive to light or sound?

Increased sensitivity to light or sound is not explicitly listed as a common adverse reaction in official regulatory documents. However, official product information describes that the drug can be associated with adverse neuropsychiatric reactions, which may include sensory changes.


Q: Does Sopid show up on drug tests?

Sopid (zolpidem) is federally regulated as a Schedule IV controlled substance. Due to its classification, it may be specifically tested for in certain panels or when a targeted screen for the compound or its metabolites is conducted.


Q: Does Sopid cause weight gain or loss?

Official reports on adverse reactions based on clinical trials do not list significant weight change (gain or loss) as a commonly observed side effect of Sopid. Changes in appetite are also not typically reported as common or uncommon adverse events in the regulatory label.


Q: Are there generic versions of Sopid available?

Yes, the active ingredient in Sopid, zolpidem tartrate, is widely available in generic formulations. These generic products have been reviewed and approved by regulatory agencies to ensure they meet the same quality and effectiveness standards as the brand-name product.


Q: Can I use Sopid if I have a history of depression?

Official documents advise caution when considering use in patients with symptoms of depression. Product information notes that the medicine may be associated with a worsening of depression, and the risk of intentional overdose is addressed by advising the smallest practical quantity of tablets should be prescribed.


Q: Are there any laboratory tests required before starting Sopid?

The drug is contraindicated in severe hepatic (liver) impairment, and dose adjustments are needed for those with mild to moderate impairment. While the official dosing instructions do not mandate specific laboratory tests, official safety information suggests evaluation of liver function may be appropriate before use.


Q: Are there different strengths or formulations of Sopid?

Yes, Sopid is available in different forms to address various sleep challenges. Regulatory documents list immediate-release tablets, extended-release tablets, and sublingual tablets, which are available in several approved strengths.


Q: What is the official chemical name of Sopid?

Sopid is the brand name for the active ingredient zolpidem tartrate. Its formal chemical description is N,N-dimethyl-2-[6-methyl-2-(4-methylphenyl)imidazo[1,2-a]pyridin-3-yl]acetamide, which is used for regulatory and pharmacological reference.


Q: How is Sopid processed by the body?

Official information states that the active substance is extensively processed, or metabolized, by the liver. This process is primarily carried out by a specific enzyme system, mainly CYP3A4, which converts the drug into inactive compounds.


Q: How is Sopid eliminated from the body?

After the drug is processed in the liver, the resulting inactive metabolites are mostly eliminated from the body through the urine, excreted via the kidneys. The elimination half-life for the active substance is described as typically short.


Q: Can Sopid cause dry mouth or constipation?

In clinical trials, both dry mouth and constipation were reported as less common adverse reactions. Dry mouth was reported in a low percentage of patients, and constipation is listed among the less commonly observed effects on the gastrointestinal system.

How should Sopid be stored and disposed of?

Official Storage and Disposal Requirements

The storage and disposal of Sopid (Zolpidem tartrate) are governed by regulatory requirements for stability and controlled substances.

Storage and Handling Requirement Official Standard
Storage Temperature Store at controlled room temperature, 20 C to 25 C (68 F to 77 F).
Environmental Protection Keep in the original, tightly closed container and protect from excess moisture and heat.
Child Safety Due to its classification, store securely and out of the sight and reach of children.
Disposal Method The preferred disposal method for unused or expired Sopid is a drug take-back program or authorized collection site.
Household Disposal If a take-back program is unavailable, mix the medicine with an unappealing substance (like coffee grounds), place it in a sealed bag or container, and discard it in the household trash. Do not flush the tablets, as Zolpidem is not on the official flush list.

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

Available in countries:

Equivalent of Sopid found in:

A-Z Index: