Sevenaletta

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Sevenaletta

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 Sevenaletta

Quick Facts

Property Description
Active ingredient Phenobarbital
Pharmacological class Barbiturate Anticonvulsant / CNS Depressant
Origin Synthetic Compound (Barbituric acid derivative)
Forms Tablet, Oral Elixir, Injectable Solution
General purpose Stabilization of nerve activity

What Type of Medicine is Sevenaletta?

Sevenaletta is a prescription-only medicine (POM) defined by its active ingredient, Phenobarbital, which is a synthetic compound derived from barbituric acid. It belongs to the classic barbiturate family and is primarily classified as an Anticonvulsant and a potent Central Nervous System (CNS) Depressant. This classification is clinically recognized for its broad effects on neuronal excitability. The general therapeutic purpose of Phenobarbital is to provide fundamental stabilization of nerve activity, which is key in managing conditions where the nervous system is prone to excessive or rapid firing.

The significance of the Phenobarbital compound is its efficacy as a long-acting barbiturate. This sustained duration of action is a differentiating factor, meaning the medication's effect persists over an extended period to maintain stable electrical activity in the brain. Its classification as a foundational medicine is globally upheld, including its status on the World Health Organization (WHO) Essential Medicines List.

Composition and Available Forms of Phenobarbital

Sevenaletta is a monopreparation, confirming that Phenobarbital is the sole active pharmaceutical ingredient (API), which is necessary for achieving the compound's focused pharmacological influence. The medication is offered in several high-level dosage forms, including the tablet for common oral route of administration, an oral elixir—often prescribed for neonates and younger patients—and an injectable solution.

The oral formulation involves the API combined with excipients in the tablet or suspended in a liquid base/vehicle (such as water and alcohol) for the elixir form. The flexibility of having an injectable solution allows for administration through the intravenous (IV) or intramuscular (IM) routes in situations requiring rapid pharmacological effect.

Regulatory References

  1. WHO Essential Medicines List for Phenobarbital
  2. MedlinePlus Drug Information
  3. NIH Phenobarbital Information (DailyMed)

What side effects are possible with Sevenaletta?

Possible Side Effects and Safety Information

Sevenaletta (Phenobarbital) is a medicine with an established regulatory safety profile defined by its potential for Central Nervous System (CNS) depression and a documented risk of dependence. The official adverse reactions are classified by frequency and system-organ class in regulatory documents.


Frequency-Classified Adverse Reactions

The most frequent adverse effects are generally related to its action as a CNS depressant. Sedation, drowsiness, and somnolence are commonly documented in regulatory texts, often being most pronounced when treatment is initiated or following a dose increase. Other effects classified as common or known to occur include ataxia (lack of coordination), nystagmus, and cognitive impairment.

Serious and Contextual Safety Notes

The official label documents several serious adverse reactions, which are classified as rare. These include severe cutaneous reactions, such as Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), with the highest risk documented within the initial weeks of therapy. Prolonged use carries a documented risk for developing physical and psychological dependence, and patients must not discontinue the medicine abruptly, as this may precipitate severe withdrawal seizures.

Safety considerations are also defined for specific groups. Older adults may experience heightened CNS effects like confusion or agitation. The medicine is contraindicated in patients with severe hepatic impairment or a history of acute intermittent porphyria. Furthermore, use during pregnancy is associated with risks of fetal abnormalities and Neonatal Withdrawal Syndrome.

Overdose and Emergency Response

Overdose and When to Seek Help: Official Regulatory Information for Sevenaletta

Overdose with Sevenaletta (Phenobarbital) is officially classified as a severe event with the potential for life-threatening or fatal consequences, primarily due to pronounced physiological depression.

Overdose Manifestations and Actions (Regulatory Focus) Official Documentation Summary
Documented Manifestations Symptoms progress through increasing Central Nervous System (CNS) Depression, starting with somnolence, ataxia, and hyporeflexia, and escalating to coma [NIH DailyMed; FDA Label]. Life-threatening outcomes include respiratory arrest, significant hypotension, and cardiovascular depression [EMA SmPC].
When to Seek Urgent Help Immediate medical attention must be sought for any suspected overdose [FDA Label]. Contacting emergency services is explicitly required for signs of severe CNS or respiratory compromise, which is considered a medical emergency.
Antidote and Management Regulatory documents state that no specific antidote is known for Phenobarbital intoxication [EMA SmPC]. Management is strictly symptomatic and supportive treatment, potentially involving procedures such as activated charcoal, gastric lavage, and enhanced elimination techniques like hemodialysis for severe cases [NIH DailyMed].
Population-Specific Risk An increased risk for severe outcomes is noted for patients with pre-existing pulmonary, cardiac, or hepatic impairment [EMA SmPC].

The official overdose profile is defined by these critical points, mandating immediate intervention and hospital monitoring of vital functions due to the high risk of respiratory and circulatory failure.

Therapeutic Uses of Sevenaletta

What Sevenaletta Treats: Main Uses and Benefits

Sevenaletta (Phenobarbital) is commonly used across domains where the management of symptoms related to heightened physiological activity and severe nervous system hyperexcitability is required. The medication is used to provide symptomatic support and contributes to easing the overall symptom load.

The primary therapeutic benefit of Sevenaletta is providing symptomatic relief in conditions involving episodic or fluctuating manifestations. It is commonly used to help with seizure disorders (including generalized tonic-clonic and partial seizures), acute neurological instability (such as status epilepticus), withdrawal syndromes, and severe anxiety-tension states.

This medicine supports the patient during difficult episodes and may assist in easing distress while addressing symptom clusters that may become intense or disruptive. As a fundamental supportive measure, its application is often relevant when additional symptomatic support is needed.


Quick Fact: Support for Symptoms of Heightened Activity

The medication is commonly used to manage conditions characterized by periods of heightened symptoms and is relevant for easing symptoms of heightened physiological activity, providing support that helps maintain functional stability when symptoms are more noticeable.

Regulatory References

  1. NIH StatPearls Monograph on Phenobarbital

Eligibility and Restrictions for Use

Who Can and Cannot Use Sevenaletta?

The eligibility for Sevenaletta (Phenobarbital) is strictly defined by government regulatory documents, detailing mandatory exclusions and conditions for use.

Category Population or Condition
Contraindicated Use Sevenaletta is strictly prohibited for patients with known hypersensitivity to barbiturates, active or latent porphyria, severe respiratory depression, and marked or severe impairment of hepatic function. The tablet formulation is also contraindicated for individuals with certain hereditary sugar intolerances.
Conditional Use/Restrictions Use is restricted for women of childbearing potential, who must use highly effective contraception. Older adults and infants are eligible but must be treated with caution and often require a reduced dosage. Caution is also mandatory for patients with renal impairment, suicidal potential, severe anemia, or a history of substance abuse.

Eligibility-Context Constraints:

Use is not recommended for certain specific age groups (e.g., hyperkinetic children) and certain injectable forms are not approved for non-indicated use in adolescents and adults, reflecting specific regulatory risk assessments.

What should I know about interactions with other medicines?

Sevenaletta's potential to interact with other medicines is primarily defined by its component, phenobarbital, a known inducer of liver enzymes.

Pharmacokinetic Interaction Mechanism

Phenobarbital increases the activity of certain liver enzymes, such as the cytochrome P450 system. This heightened enzyme activity speeds up the metabolism (breakdown) of many other drugs. This effect can lead to lower blood levels of the co-administered drugs, potentially reducing their effectiveness or therapeutic benefit.

Key Interacting Medicinal Product Categories

Interactions with Sevenaletta are clinically significant across several therapeutic classes, often necessitating dosage adjustments or alternative therapies. Contraindicated combinations include use with certain other CNS depressants, such as opioids and benzodiazepines, due to the heightened risk of profound sedation, respiratory depression, coma, and death.

Other major interacting categories include:

Product Class Potential Effect
Hormonal Contraceptives (Pills, patches, rings) Reduced contraceptive effectiveness due to increased hormone metabolism.
Anticoagulants (e.g., Warfarin) Lowered effectiveness, increasing the risk of blood clot formation.
Antiepileptic/Seizure Medicines Unpredictable changes in the blood levels of both drugs, affecting seizure control.
Corticosteroids Reduced therapeutic effect, potentially requiring higher doses.

Patients should also avoid alcohol due to an increased risk of severe central nervous system (CNS) depression and excessive drowsiness.

Mechanism of Action

Modulation of the GABAA Receptor System

This domain covers the drug's primary action as a positive allosteric modulator of the GABAA receptor, which enhances inhibitory signaling. By increasing the duration of chloride ion influx into the neuron, the drug causes significant postsynaptic hyperpolarization, which is the key cellular step toward reduced neuronal excitability.


Dual Suppression of Neuronal Excitation

The mechanism extends to the suppression of the brain's main excitatory pathway. This is achieved through two concurrent actions: acting as a non-competitive antagonist at specific Glutamate receptors and inhibiting presynaptic P/Q-type Ca^2+ channels. This dual suppression limits the release and reception of excitatory neurotransmitters, thereby effectively inhibiting the propagation of excessive electrical activity across neuronal networks.


Resulting Systemic CNS Depression

The combined mechanistic effect of boosting inhibition and suppressing excitation fundamentally shifts the balance of neurotransmission towards quiescence. This translates into a dose-dependent continuum of Central Nervous System (CNS) depression, which represents the expected physiological consequence linked to the drug’s binding and modulation profile.

Dosage and Administration Information

How to Use Sevenaletta

Sevenaletta (Phenobarbital) is administered according to standardized protocols that dictate the delivery method, dosage, and scheduling for its use in clinical practice.

Official Administration and Dosage

The medication is officially available for Oral (PO) intake via tablets or elixir, and for Parenteral administration via Intramuscular (IM) and Intravenous (IV) injection. The chosen route depends on the clinical context, with the IV route typically reserved for acute, emergency settings under close supervision.

Use Case Standard Adult Dosing Frequency/Timing
Chronic Maintenance 60 mg to 300 mg daily Once daily (QD) or in 2 to 3 divided doses
Acute Seizure Loading 15 mg to 20 mg per kg IV Single dose, administered slowly

For chronic use, the long half-life of Phenobarbital often permits the total daily dose to be taken once a day. The full anticonvulsant effect, or steady state, may require two to three weeks to achieve after therapy initiation. Oral administration can be performed with or without food.

Procedural and Population Constraints

Administration requires specific procedural adherence. When given intravenously, the injection must be performed at a controlled, slow rate, generally not exceeding 60 mg per minute in adults. Furthermore, the prescribing information dictates that dose reductions are necessary for certain populations, including older adults and patients with hepatic or renal impairment, due to altered drug clearance.

When discontinuing Sevenaletta, the protocol mandates that the medicine must be gradually withdrawn (tapered) to avoid abrupt changes in the patient's pharmacological state.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Sevenaletta

Sevenaletta (Phenobarbital) was studied for its use in research exploring several conditions involving periods of heightened symptom activity. The evidence landscape includes data gathered over many decades from regulatory submissions and academic research.


Evidence for Use in Seizure Disorders

The research base for seizures, including generalized and partial forms, consists primarily of Randomized Controlled Trials (RCTs) and systematic reviews. Studies examined how frequently patients experienced seizures, measured seizure freedom, and monitored long-term neurodevelopmental outcomes in children. While historical data describes patterns of change in seizure frequency, evidence quality varies across older studies, and modern comparative evidence against newer medicines is limited. The medicine is included on essential medicine lists globally.


Evidence for Acute Instability and Withdrawal Syndromes

Research for acute neurological instability, such as status epilepticus, utilized RCTs and observational reports in critical care. Studies explored outcomes by monitoring the time interval until observed changes in seizure activity and subsequent neurological status. Findings describe patterns related to the cessation of prolonged seizure activity, although direct comparisons against all modern critical care treatments are restricted to more severe cases.

For withdrawal syndromes, including Alcohol Withdrawal Syndrome (AWS), evidence comes from systematic reviews and cohort studies. Research examined symptom intensity using clinical scales and tracked healthcare utilization measurements. However, these studies show high heterogeneity in protocols, and data for non-alcohol sedative withdrawal remains insufficient.


Long-Term Data and Research Uncertainty

Long-term studies monitored patients for chronic seizure management to assess the sustained nature of observed changes. However, there is limited information regarding measurements of cognitive function and quality of life extending beyond a few years in many adult cohorts. Evidence is also limited for older adults and individuals who are pregnant. The scientific community acknowledges that long-term effects are not fully established and that subgroup findings are uncertain across many specialized patient populations.

Key Studies & References

  1. Phenobarbital - StatPearls - NCBI Bookshelf - NIH
  2. WHO Model List of Essential Medicines – 23rd List (2023)

Frequently Asked Questions (FAQ)

Common questions about Sevenaletta (FAQ)


Q: Is Sevenaletta a brand name or is there a generic available?

Sevenaletta's active ingredient is phenobarbital, which is the generic name for the drug substance. Regulatory documents confirm that phenobarbital is available in many countries as a generic medicine, in addition to being included in various brand-name products.

Q: Can Sevenaletta be used by teenagers or children?

Official product information confirms that phenobarbital-containing products have approved uses for specific seizure conditions in infants and children. However, specific age constraints apply, and use in adolescents and adults for certain conditions may be unapproved or restricted, such as for hyperkinetic children.

Q: Will the common side effects of Sevenaletta go away after a few weeks?

Official information notes that common side effects like sedation and drowsiness are generally most pronounced when treatment is first started or following a dose increase. This pattern implies that the intensity of some initial effects may lessen over time as the body adjusts, and tolerance may develop with continued use.

Q: Can Sevenaletta cause drowsiness or affect my ability to drive?

Official regulatory warnings indicate that phenobarbital-containing products can cause drowsiness, dizziness, and central nervous system (CNS) depression. Because of this, the medication may affect the mental and physical abilities required to perform potentially hazardous tasks, such as driving or operating machinery.

Q: Are there any foods or drinks that should be avoided while taking Sevenaletta?

Official documents list alcohol as a product to be avoided due to a significantly increased risk of severe CNS depression. While the drug can generally be taken with or without food, no specific foods are listed in the official product information as being routinely required to be avoided.

Q: Does Sevenaletta interact with common over-the-counter pain relievers like Ibuprofen?

As a liver enzyme inducer, phenobarbital may affect the way many other drugs are processed in the body. This effect can potentially change the metabolism of various over-the-counter pain relievers, which may reduce their therapeutic benefit or potentially increase toxicity in certain combinations.

Q: Can Sevenaletta be taken with vitamins or herbal supplements?

Patients are generally cautioned by healthcare providers to discuss all concurrent over-the-counter products, including vitamins and herbal supplements. For long-term use, regulatory documents sometimes note that Vitamin D and Calcium supplementation may be necessary due to phenobarbital's potential effect on bone metabolism.

Q: Is it common to have a headache when first starting Sevenaletta?

Yes, regulatory data lists headache as one of the documented possible adverse reactions associated with phenobarbital-containing products. If a patient experiences persistent headaches, they should consult their healthcare provider.

Q: Is it normal to feel slightly dizzy after taking Sevenaletta for the first time?

Side effect profiles for phenobarbital-containing products list dizziness or the sensation of vertigo as a possible common side effect. Patients may also experience a lack of coordination (ataxia) or involuntary eye movement (nystagmus) when starting treatment.

Q: What should I do if I miss a dose of Sevenaletta?

Official protocols for long-acting drugs indicate that patients should not take double or extra doses to make up for a missed one. Any instruction regarding a missed dose should be obtained directly from the prescribing healthcare provider.

Q: Can Sevenaletta be crushed or split if a person has trouble swallowing?

Phenobarbital is available in an oral elixir (liquid) form that is often used by individuals who have difficulty swallowing tablets. Regarding tablets, regulatory studies have suggested that splitting them may not maintain dose accuracy. The availability of the liquid form means it may be used by individuals unable to swallow the tablet whole.

Q: Is it possible to take Sevenaletta while breastfeeding?

Official information confirms that phenobarbital is excreted into breast milk. Guidance advises that while breastfeeding, the infant must be monitored for signs of sedation, poor feeding, or poor weight gain, as the drug can pass to the baby.

Q: Will I need blood tests or monitoring while taking Sevenaletta?

Yes, regulatory documents recommend periodic monitoring while taking phenobarbital-containing products. This monitoring may include checks of blood counts, bone mineral density (for long-term use), and phenobarbital plasma concentrations (therapeutic drug monitoring).

Q: Is there a possibility that Sevenaletta will stop working over time?

Official prescribing information notes that tolerance may develop with the prolonged use of phenobarbital-containing products. If tolerance develops, the drug's effectiveness in controlling the targeted condition may decrease over time.

Q: Can Sevenaletta be taken with antidepressant medication?

Phenobarbital can interact with various other medicines by changing how the liver processes them. This includes certain antidepressant classes, such as tricyclic antidepressants, and may require a dosage adjustment of either medication.

Q: What should I do if I start taking a new medicine after I've already started Sevenaletta?

Due to phenobarbital's effect as a major enzyme inducer, regulatory warnings suggest that patients inform their healthcare provider when starting any new medicine, including over-the-counter products, as the new drug's dose or the Sevenaletta dose may need adjustment.

Q: Are there any lifestyle restrictions mentioned in the official labeling (e.g., sun exposure)?

Official labeling primarily focuses on avoiding alcohol and caution when driving. While sun exposure is not a direct restriction, regulatory documents note that inadequate sun exposure is a factor to consider for Vitamin D supplementation in long-term users, as the drug can affect bone health.

Q: How quickly does Sevenaletta typically clear from the body after stopping use?

Phenobarbital is known as a long-acting medication with a long plasma half-life. Official sources indicate the half-life is long, ranging up to about 100 hours in adults, meaning the medicine is cleared from the body slowly over several days after it is stopped.

Q: What is the therapeutic window described for Sevenaletta?

The therapeutic window refers to the range of drug concentration in the blood that is most likely to be effective without causing toxic effects. The reported therapeutic plasma concentration range for anticonvulsant activity is typically between 10 to 40 micrograms per milliliter (mu g/ mL) of phenobarbital.

Q: What happens if I take Sevenaletta and I have high blood pressure?

High blood pressure (hypertension) is not generally listed as a direct contraindication for this medicine. However, official information notes that phenobarbital may increase the hypotensive activities of other medications, meaning it could potentially enhance the blood pressure-lowering effect of drugs used to treat hypertension.

How should Sevenaletta be stored and disposed of?

How to Store and Dispose of Sevenaletta?

Sevenaletta (Phenobarbital), a controlled substance, requires adherence to specific regulatory requirements for storage and disposal to ensure stability and public safety.


Mandatory Storage Conditions

Requirement Official Condition
Temperature Store at Controlled Room Temperature, typically 20 C to 25 C, and do not store above 30 C.
Protection Protect from light and moisture; store in the original, tightly closed, light-resistant container.
Child Safety Keep out of the sight and reach of children; the container must have a child-resistant closure.

Official Disposal Instructions

Unused or expired product must be disposed of according to local requirements. For controlled substances, regulatory guidance often recommends using an official drug take-back location. If a take-back program is unavailable, follow the specific instructions for household disposal of controlled medications.

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

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