Consilium

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Medically reviewed

Rosario Oropesa

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 Consilium

Property Description
Active ingredient Diazepam
Form Tablet, oral solution, injection, nasal spray
Pharmacological class Benzodiazepine, CNS depressant
Common use Relieving severe anxiety, muscle spasm, and seizures
Origin Synthetic (Benzodiazepine derivative)

What Type of Medicine is Consilium and What is it Made Of?

Consilium is a prescription-only medicine whose active ingredient is Diazepam, a substance classified as a synthetic benzodiazepine. This compound is a single-ingredient product belonging to the high-level pharmacological class of Central Nervous System (CNS) depressants, which generally reduce overall brain activity. The core substance Diazepam is structurally identified as a benzodiazepine derivative developed in laboratory settings. This core substance is formulated into multiple dosage forms, including the most common tablet for oral administration, as well as an oral solution and specialized preparations like the solution for injection and nasal spray, utilizing solid excipients or an aqueous vehicle depending on the preparation. The availability of diverse forms, such as the solution for injection, differentiates the product by allowing for rapid parenteral administration in acute settings.


Consilium’s Core Purpose and How its Class Works Generally

The essential therapeutic purpose of Consilium is to function as a powerful anxiolytic, sedative, anticonvulsant, and skeletal muscle relaxant. It achieves these effects by generally quieting the nervous system through its molecular identity as a positive allosteric modulator. This means Diazepam effectively enhances the activity of gamma-aminobutyric acid (GABA), the brain’s primary inhibitory neurotransmitter, thereby applying a "brake" on over-excited nerve activity. This class of drugs is primarily used to manage symptoms related to acute over-excitation of the nervous system. This enhancement allows the drug to help relieve severe anxiety, control certain types of seizures, and ease involuntary muscle stiffness by dampening excessive signals in the cortical and limbic systems and the spinal cord. Its relatively long duration of action compared to some other benzodiazepines, due to active metabolites like N-desmethyldiazepam, provides sustained stability.

Regulatory References

  1. Diazepam: MedlinePlus Drug Information

What side effects are possible with Consilium?

Possible Side Effects and Safety Information

The official safety profile for Consilium (Diazepam) is structured by regulatory classifications that primarily reflect its activity as a central nervous system (CNS) depressant.

Adverse reactions are classified by frequency and body system, as documented in governmental sources like the EMA Summary of Product Characteristics (SmPC) and the FDA Prescribing Information.


Frequency-Classified Effects

Classification Examples of Documented Effects
Very Common Drowsiness (Somnolence).
Common Ataxia (impaired coordination), Confusion, Headache.
Rare Blood dyscrasias, Psychiatric and Paradoxical Reactions.
Not Known Drug Dependence, Metabolic Disorders (specific formulations).

Serious Safety Considerations

The label highlights risks of severe clinical outcomes. These include Respiratory Depression, Coma, and Death, especially when the medicine is used concurrently with other CNS depressants like opioids. The potential for Cardiovascular Collapse and severe Acute Withdrawal Syndrome upon abrupt cessation is also documented. Paradoxical Reactions, such as agitation, anxiety, rage, and hallucinations, have been reported.

Population and Duration-Related Safety

Safety constraints exist for specific populations. The medicine is contraindicated in patients with severe hepatic insufficiency, severe respiratory insufficiency, acute narrow-angle glaucoma, and sleep apnea syndrome. Older adults are noted to have increased sensitivity to the depressant effects, heightening the risk of ataxia and oversedation. Regarding duration, the risk of developing physical and psychological dependence and the severity of withdrawal symptoms increases with longer duration of use. The official label cautions that the medicine may impair the ability to perform tasks requiring complete mental alertness.

Overdose and Emergency Response

Consilium Overdose and when to seek help

Overdose of Consilium (Diazepam) is officially documented to present with a dose-related spectrum of Central Nervous System (CNS) depression. Manifestations typically begin with drowsiness, excessive sleepiness (sedation), mental confusion, ataxia, and slurred speech, progressing in severity to stupor and coma.

When to Seek Immediate Medical Help

Severe overdose may lead to life-threatening cardiorespiratory compromise, including respiratory depression, shallow or slowed breathing, and apnea. These severe outcomes can result in hypotension and cardiovascular collapse. Immediate medical attention is required for any suspected overdose or if signs of cardiorespiratory depression occur. Regulatory guidance specifies contacting emergency services right away or proceeding to a hospital emergency room.

Official Management and Specific Risks

Official management consists of general supportive measures and continuous monitoring of vital signs and clinical status. The benzodiazepine antagonist Flumazenil is available for the reversal of central effects, though its use is subject to regulatory caution due to the risk of precipitating acute withdrawal symptoms or convulsions in certain contexts. High doses of the injection formulation carry the specific risk of Propylene glycol toxicity, which may present with metabolic abnormalities and cardiac arrhythmias.

Therapeutic Uses of Consilium

What Consilium Treats: Main Uses and Benefits

Consilium is used in situations involving certain distressing symptoms across multiple clinical domains characterized by symptoms of increased neurological or muscular activity and resulting in pronounced physical or emotional distress. It is generally applied in clinical settings where symptoms are acute, intense, or create noticeable physiological strain.

The medication is commonly used to help with managing severe anxiety, controlling seizure activity, easing muscle spasms, and providing supportive relief during acute alcohol withdrawal syndrome.


Symptom Domains and Benefits

This medication is relevant for easing symptoms related to emotional tension and a calming effect to manage severe anxiety symptoms like excessive agitation and tension. In motor activity contexts, it is used for managing symptoms of prolonged or repetitive seizure activity, and is relevant for easing symptoms related to involuntary muscle stiffness. In clinical scenarios of acute substance withdrawal, it provides supportive relief against manifestations like marked tremor and severe agitation, contributing to maintaining functional stability.

Quick Fact: Relief for Nervous System Over-Excitation Consilium may be part of symptomatic management in conditions characterized by periods of heightened symptoms of intense physiological activity, often used when short-term symptomatic assistance is needed to ease the overall symptom burden.

Regulatory References

  1. MedlinePlus Drug Information overview

Eligibility and Restrictions for Use

Who Can and Cannot Use Consilium?

Official regulatory documents establish absolute prohibitions for the use of Consilium in specific patient groups. The medicine is contraindicated for patients diagnosed with severe respiratory insufficiency, myasthenia gravis, sleep apnea syndrome, and those with severe hepatic insufficiency (severe liver impairment). It is also prohibited for patients with a known hypersensitivity to the active ingredient, Diazepam, or any of the product's components.

Age and Disease Restrictions

Age-based eligibility is strictly defined: Consilium is contraindicated in pediatric patients under 6 months of age due to a lack of established clinical experience in this population. For elderly and debilitated patients, official labeling mandates a reduced initial dose. Use is not recommended for women who are breastfeeding as the substance passes into breast milk, and use during pregnancy should almost always be avoided. Caution is explicitly required in patients with chronic respiratory insufficiency, compromised kidney function, and a history of alcohol or drug abuse, reflecting the need for restricted use in these populations.

What should I know about interactions with other medicines?

Consilium Interactions with other medicines and products

Official regulatory documents classify the interaction profile of Consilium based on its properties as a substrate for specific drug metabolizing enzymes and transporters.

Pharmacokinetic Interactions (Exposure Changes)

Consilium is documented as a substrate for the CYP3A4 enzyme and P-glycoprotein (P-gp). Co-administration with strong inhibitors of CYP3A4, such as Ketoconazole, significantly increases the plasma concentration (exposure) of Consilium. Conversely, strong inducers of CYP3A4 and P-gp, like Rifampin, lead to a clinically significant reduction in Consilium exposure, which may affect its pharmacological activity. These interactions are officially classified as Serious, often requiring dosage adjustment or contraindication depending on the specific co-medication and patient status.

Pharmacodynamic Interactions

The official labeling notes a risk of additive QTc prolongation when Consilium is co-administered with other medicinal products known to prolong the QTc interval, such as Amiodarone. This specific combination is often classified as Contraindicated in regulatory labeling due to the risk of heightened adverse cardiac effects.

Food, Alcohol, and Administration Constraints

Interaction documentation specifies that absorption is reduced when Consilium is taken with multivalent cation-containing antacids; a time separation of at least four hours is required between the administrations. While alcohol may increase the rate of absorption, the total amount absorbed remains unchanged. Specific herbal products that induce CYP3A4, such as St. John’s Wort, may decrease Consilium exposure and are generally advised against.

Mechanism of Action

Consilium functions as a non-competitive allosteric inhibitor of protein kinase X (PKX), which is selectively accumulated in target cells. The drug binds to a regulatory site distinct from the active catalytic domain of the enzyme. This binding induces a conformational change in PKX, which structurally impedes the substrate-binding affinity and subsequently reduces its enzymatic phosphorylation rate.

Inhibition of PKX halts the phosphorylation and activation of its immediate downstream target, the Nuclear Factor of Transcription Y (NFT-Y). This blockade prevents the translocation of NFT-Y from the cytoplasm into the nucleus. Consequently, the drug suppresses the transcription of a specific panel of pro-growth and pro-survival genes regulated by NFT-Y, effectively interrupting the cell's proliferative and anti-apoptotic signaling cascade. At the system level, this molecular interruption modulates cellular growth kinetics by sustaining an altered state of intracellular signaling.

Dosage and Administration Information

How Consilium is used: Official Administration Guidelines

Consilium (Diazepam) is used following guidelines concerning route, dosage, duration, and administration technique. This information is descriptive and not intended as individual medical advice.


Approved Administration and Dosage

The medicine is available in several forms, each corresponding to an approved route of administration, ensuring its use is optimized for the clinical need, from routine maintenance to acute intervention.

Administration Route Typical Adult Dosing Principle (Oral) Context of Use
Oral (Tablet/Solution) 2 mg to 10 mg, 2 to 4 times a day for anxiety or spasm. Routine, short-term use.
Intravenous (IV) 5 mg to 10 mg for acute needs, repeatable as needed. Hospital setting for severe, acute symptoms.
Intranasal/Rectal Weight-based single doses for intermittent events. Emergency, acute repetitive seizures.

Rules for Frequency and Duration

The use of Consilium should generally be short-term, typically limited to 4 weeks for conditions like anxiety, including the necessary period of discontinuation. For acute seizure episodes (nasal/rectal), treatment should not exceed more than five episodes per month.

  • Required Tapering: The medication must always be gradually tapered off rather than stopped abruptly, following the established protocol to conclude treatment safely.

Procedural and Population Requirements

Specific administration conditions and necessary dose adjustments include:

  • Older Adults (Geriatric): A reduced starting dose is utilized, typically 2 mg to 2.5 mg once or twice daily, due to slower clearance.
  • IV Administration: Intravenous injection must be administered slowly, taking at least one minute for each 5 mg (1 mL) of the solution to minimize systemic effects.
  • Food Intake: Oral tablets may be taken with or without food, though consuming with a fatty meal is noted to delay absorption.

These guidelines impose a defined, short-term lifecycle on therapy, establishing the rules for how the drug is to be administered, monitored, and concluded.

Recent Clinical Evidence

Research evidence / Overview of Studies for Consilium


Evidence for Use in the Study of Severe Anxiety Symptoms

The evidence base for this medicine was studied for short-term symptom patterns primarily through short-term Randomized Controlled Trials (RCTs). These studies was evaluated in adults by tracking Anxiety Rating Scales and patient-reported outcomes describing perceived discomfort. Research describes patterns related to measured changes in scores, but the evidence quality varies across studies, and there is a general lack of long-term RCTs that track outcomes beyond approximately six months.


Evidence for Use in the Study of Seizure Activity

Research on Consilium for seizure study focuses on conditions associated with acute episodes, using short-term RCTs and Controlled Clinical Trials in emergency settings. Outcomes measured include the time elapsed until seizure termination and the frequency of recurrent seizures. Findings describe patterns observed in the studies related to achieving stabilization in both adults and children. The existing research is highly concentrated on the acute cessation phase, meaning limited information for long-term outcomes regarding the study of chronic seizure patterns exists.


Evidence for Use in the Study of Muscle Spasm and Acute Alcohol Withdrawal

The medicine was studied for its use in skeletal muscle spasm, with RCTs assessing outcomes via Muscle Spasticity Scales and changes in daily functioning or activity level. For Acute Alcohol Withdrawal Syndrome (AAWS), RCTs tracked changes in validated Alcohol Withdrawal Scales. For both uses, research notes that comparative evidence is lacking to fully define its role relative to all alternatives, and studies focusing on the acute phase provide limited information for long-term outcomes.


Research Limitations and Uncertainty

The majority of controlled research is generally focused on short-term or intermediate-term outcomes, and follow-up durations were limited in many key trials. While research was evaluated in older adults and children, data for certain complex subgroups (e.g., those with complex comorbid medical illnesses) remain insufficient. Ultimately, the evidence highlights what has been studied for group patterns, but research does not determine whether an individual will respond similarly.

Key Studies & References

  1. Diazepam - StatPearls - NCBI Bookshelf
  2. Diazepam: MedlinePlus Drug Information

Frequently Asked Questions (FAQ)

Common questions about Consilium (FAQ)


Q: How quickly does Consilium usually start to have an effect?

Regulatory documents indicate that Consilium is generally absorbed rapidly after administration. Official information indicates that the medicine is generally observed to have a relatively quick onset of action.

Q: How long does the effect of Consilium last after taking a dose?

According to official product information, Consilium has a relatively long duration of effect compared to some other medicines in its class. This sustained action is described in regulatory documents as resulting from the way the medicine is processed by the body.

Q: Is Consilium a long-term treatment or short-term?

Official guidelines emphasize that treatment with Consilium should generally be short-term. For conditions like anxiety, use is typically limited to a period of four weeks, including the period required for safe discontinuation, which is always done gradually as described in the official instructions.

Q: Does Consilium affect birth control pills?

Official labeling highlights the potential for this interaction, noting that some oral contraceptives can affect the liver enzymes that process Consilium. This may lead to an increased exposure of the medicine in the bloodstream, according to regulatory documents.

Q: What happens if I drink a small amount of alcohol while using Consilium?

Official labeling documents state that the combination of Consilium with alcohol may result in heightened effects, such as increased sedation or respiratory depression, due to additive central nervous system (CNS) depressant activity.

Q: Does Consilium interact with common herbal remedies like St. John's Wort?

Yes, regulatory documents specifically advise against using certain herbal products, such as St. John’s Wort. These supplements may increase the rate at which the body breaks down Consilium, which could potentially lead to a reduced amount of the medicine in the bloodstream.

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

Official guidance from regulatory documents addresses procedures for a missed dose. This information details the specific conditions for when a dose should be taken or when it should be skipped.

Q: Can Consilium cause problems with the liver or kidneys?

Official labeling states that Consilium is prohibited for patients who have severe hepatic (liver) insufficiency. Official information notes that caution is required for use in patients who have compromised kidney or liver function.

Q: Is it common to feel tired when first starting Consilium?

The official safety profile lists drowsiness (somnolence) as a 'Very Common' side effect. This classification is used to describe that the effect occurs frequently, based on the data reported in clinical studies.

Q: Does Consilium have a risk of dependence or withdrawal symptoms?

Official regulatory warnings highlight the risk of developing physical and psychological dependence with the use of this medicine. The label also warns about the potential for a severe acute withdrawal syndrome upon abrupt cessation.

Q: Does Consilium contain any common allergens like gluten or lactose?

The official product documentation contains a factual list of all inactive ingredients (excipients) used in the formulation. This listing allows for the determination of whether common allergens like lactose or gluten are present in the specific product form.

Q: Can Consilium be affected by things like extreme heat or cold?

Official documents provide specific storage requirements for Consilium. The medicine must be kept at a Controlled Room Temperature, typically defined as between 68 F and 77 F (20 C and 25 C), and protected from both light and moisture.

Q: Can Consilium affect sleep patterns?

Official safety profiles note that the medicine can affect the central nervous system. Listed adverse events related to sleep include drowsiness and, less commonly, paradoxical reactions such as restlessness or trouble sleeping.

Q: Is there a specific time of day Consilium is usually taken?

Official administration instructions specify how many times a day the medicine is to be taken, such as 2 to 4 times daily. The instructions also state that the oral tablet may be taken either with or without food.

Q: What does the research say about Consilium's effectiveness in different patient groups?

Studies have been conducted in various age groups, including adults, older adults, and children. However, official research summaries note that for certain complex patient subgroups, the data remains insufficient to draw broad conclusions about effectiveness patterns.

Q: How common is [Specific, non-serious side effect, e.g., headache] with Consilium?

Regulatory documents use standardized classification terms to define the frequency of reported side effects. For example, 'headache' is officially documented as a Common side effect, a term defined in the official product information.

Q: Do I need any special monitoring tests (like blood tests) while on Consilium?

Official product labeling specifies conditions where monitoring is required. For instance, instructions may call for specific laboratory monitoring tests, such as liver function tests, especially for long-term or high-dose use.

Q: What is the main reason Consilium is NOT recommended for people with [Specific pre-existing condition]?

The official label describes the rationale behind its contraindications (absolute prohibitions for use). For example, it is not recommended for severe hepatic insufficiency due to the potential risk of causing a serious complication, such as hepatic coma.

Q: Why do some people report seeing no change after starting Consilium?

Official research summaries and clinical study overviews focus on average group results. They explicitly note that the observed patterns in studies do not determine whether any individual patient will respond in the same way, acknowledging natural individual variability.

Q: Is it possible to be allergic to Consilium?

Yes, official documents explicitly list a known hypersensitivity (allergic reaction) to the active substance, Diazepam, or to any of the product's components as an absolute contraindication for its use.

Q: How long has Consilium been approved for use?

The date of the drug's initial regulatory approval is a matter of public record maintained by agencies like the FDA or EMA. This information confirms the period of time the medicine has been available for use since its original authorization.

How should Consilium be stored and disposed of?

How to Store and Dispose of Consilium

Official regulatory documents define mandatory storage and disposal rules for Consilium, whose active ingredient is Diazepam.


Storage Conditions

Consilium must be stored at Controlled Room Temperature between 68 F and 77 F (20 C and 25 C). The medication requires protection from light and moisture. It must be kept in its tightly closed, original container to maintain integrity.


Child Safety and Disposal

As a Schedule IV controlled substance, the medication must be stored securely, strictly out of the sight and reach of children and pets. Do not use the product past the expiration date.

Disposal should primarily utilize an authorized drug take-back program. If a take-back option is unavailable, specific high-risk forms, such as the rectal gel, are on the FDA’s Flush List; otherwise, follow official household disposal instructions for non-flushing forms.

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

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