Asile

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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 Asile

Property Description
Active ingredient Aciclovir (Acyclovir)
Form Tablets, cream, ointment, suspension, powder for solution
Pharmacological class Antiviral agent, specifically a virostatic
Common use Managing viral replication in specific herpes infections
Origin Synthetic purine nucleoside analogue

What Type of Medicine is Asile?

Asile is a prescription-only medicine whose active ingredient is Aciclovir (Acyclovir), fundamentally classified as an antiviral agent within the category of synthetic nucleoside analogues. This compound is a guanine derivative engineered to disrupt the life cycle of specific viruses, such as Herpes simplex virus (HSV) and Varicella zoster virus (VZV). Aciclovir works by stopping the spread of the herpes virus in the body. This selective action is clinically recognized, offering a targeted approach to managing the underlying viral activity.

Composition and Available Forms of Aciclovir

The core of Asile is the single active component, Aciclovir, which is prepared in multiple dosage forms suitable for different routes of administration. These pharmaceutical preparations include solid oral tablets and suspension, localized topical cream and ointment, and a powder for solution intended for intravenous administration. The availability of these various forms ensures the nucleoside analogue can be delivered either systemically or locally, depending on the therapeutic need.

The General Purpose of This Antiviral Agent

The overall purpose of this medication is to support the body's processes by limiting the progression and severity of targeted viral infections, such as managing a mucocutaneous herpes outbreak. Its action is highly selective, aiming to achieve viral DNA synthesis inhibition in infected cells. By strategically disrupting the virus's ability to reproduce, this virostatic antiviral agent reduces the overall viral burden in the patient, which constitutes the general benefit sought through its administration.

Regulatory References

  1. MedlinePlus Drug Information

What side effects are possible with Asile?

Possible Side Effects and Safety Information

As with all medications, Asile may cause side effects, though not everyone experiences them. Side effects can range from common and mild to rare and serious. It is important to be aware of the potential risks and to discuss them with a healthcare professional.


Common Side Effects

Common side effects, which affect a small percentage of individuals, typically involve the gastrointestinal system and may include:

  • Mild indigestion or heartburn
  • Stomach discomfort or upset
  • Nausea

Taking Asile with food or milk may help minimize stomach irritation. If these effects persist or worsen, consult your doctor.


Serious Side Effects and Warnings

Serious side effects are uncommon but require immediate medical attention. These include signs of internal bleeding, severe allergic reactions, and certain organ-related issues. You should contact a doctor immediately if you experience:

  • Signs of internal bleeding: Black, tarry stools, bloody vomit or vomit that looks like coffee grounds, or unusual bruising/bleeding.
  • Severe allergic reaction (Anaphylaxis): Hives, rash, swelling of the face, lips, tongue, or throat, or difficulty breathing.
  • Signs of liver problems: Yellowing of the skin or whites of the eyes (jaundice), dark urine, or severe abdominal pain.
  • Sudden or unexplained changes: Ringing in the ears (tinnitus), confusion, or severe persistent headache.

General Safety Information

Asile is typically contraindicated in patients with a known allergy to the drug or other similar medications. It should also be used with caution, or avoided, in individuals with a history of gastrointestinal ulcers or bleeding disorders. Inform your healthcare provider of all other medications (prescription and over-the-counter) and supplements you are taking, as drug interactions can increase the risk of side effects. Special precautions may be necessary for elderly patients and those with existing kidney or liver impairment.

Overdose and Emergency Response

Overdose and When to Seek Help

A documented overdose of Asile (Aciclovir) requires immediate medical attention due to the potential for severe and life-threatening systemic effects. Suspected or actual overdosage necessitates contacting emergency medical services.

Overdosage has been associated with effects on the Central Nervous System (CNS) and the Renal System. Documented clinical manifestations include nausea, vomiting, and diarrhea, as well as neurological symptoms such as headache, confusion, agitation, hallucinations, lethargy, seizures, and coma.

The most serious outcomes documented are acute renal failure, which results from the precipitation of drug crystals (crystalluria) in the kidney tubules, and severe CNS toxicity.

Situation Required Action (Regulatory)
Suspected or actual overdose Seek immediate medical attention or contact emergency services.
Management procedure Treatment involves symptomatic and supportive therapy.

No specific antidote is known for Aciclovir. In cases of severe toxicity, hemodialysis is cited as a procedure effective for significantly removing the circulating drug from the blood. Monitoring requires close observation of both renal function (tracking BUN and creatinine) and neurological status. Caution is documented for elderly patients and those with pre-existing renal impairment, as these populations are at increased risk for toxicity due to compromised drug clearance.

Therapeutic Uses of Asile

Quick Facts: Asile Uses

  • May be utilized in managing certain types of inflammation.
  • Provides assistance in the temporary relief of mild-to-moderate pain.
  • Used in the context of specific disease management protocols as determined by a healthcare provider.

Asile is a therapeutic agent used in the management of specific health conditions. Its primary use includes providing temporary relief of mild pain and discomfort associated with various symptoms. The medication may also be utilized to help manage certain types of inflammation in the body, which can be a component of various acute and chronic conditions. It is important to note that Asile is intended to address the manifestation of symptoms and support the overall care plan directed by a qualified professional.

In some medical contexts, Asile is employed as part of a long-term preventive strategy under strict medical supervision, particularly to help mitigate risks in certain patient populations.

Eligibility and Restrictions for Use

Who Can and Cannot Use Asile?

The population eligibility for using Asile (Aciclovir) is defined by official regulatory labeling, outlining specific groups for whom use is permitted, restricted, or strictly prohibited.

Contraindications and Absolute Exclusions

Use of this medicine is contraindicated for patients with a known hypersensitivity to the active ingredient aciclovir, to valaciclovir, or to any of the non-active components (excipients) in the specific product formulation. Furthermore, certain oral tablet formulations are contraindicated in patients with rare hereditary problems like glucose-galactose malabsorption or Lapp lactase deficiency.

Age-Related and Conditional Eligibility

Eligibility spans all age groups, from neonates (for intravenous use) and children ge 2 years (for oral use in specific conditions) through to adults and older adults. For elderly patients, use is permitted but requires conditional consideration due to the likelihood of reduced renal function.

Patients with impaired renal function also require conditional use, as the dosage must be specifically adjusted. Use during pregnancy and lactation is permitted only when the treating physician determines the potential benefit outweighs the unknown risks. Caution is also advised for severely immune-compromised patients and those with underlying neurological abnormalities.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory documentation for Asile establishes its interaction profile primarily through competition for renal clearance and the risk of additive toxicity.

Property Official Regulatory Documentation
Medicinal product categories with documented interactions Agents that reduce renal clearance via tubular secretion; Potentially nephrotoxic agents; Live attenuated virus vaccines.
Specific interacting medicines (if explicitly listed) Probenecid, Cimetidine, Mycophenolate Mofetil (MMF).
Mechanistic basis of interactions Competitive inhibition of active renal tubular secretion; Pharmacodynamic antagonism; Effect on CYP1A2 metabolism (documented for specific drug).
Population-specific interaction notes Geriatric patients may exhibit higher plasma concentrations due to age-related reduced renal function.

Official interaction statements:

  • Co-administration with Probenecid and Cimetidine significantly increases Aciclovir's plasma concentration and Area Under the Curve (AUC) by reducing its renal clearance.
  • Aciclovir increases the plasma concentration of the inactive metabolite of Mycophenolate Mofetil (MMF) through competition for renal tubular clearance.
  • Caution is required with other potentially nephrotoxic agents as co-administration may increase the risk of renal dysfunction.
  • Talimogene Laherparepvec (T-VEC) should be avoided due to the potential for pharmacodynamic antagonism.
  • The drug's oral absorption is not affected by food.

Connection to the overall interaction profile (3 sentences):

The regulatory profile confirms that substances that compete for renal tubular secretion, such as Probenecid, lead to increased systemic exposure to Aciclovir. This structure also flags the heightened risk of additive renal toxicity when combined with other nephrotoxic agents. These interaction statements represent the formal, government-approved constraints for co-administration.

Mechanism of Action

Targeted Activation by Viral Enzymes

Aciclovir is an inactive precursor whose mechanism relies on exclusive activation by the Viral Thymidine Kinase enzyme found only inside virus-infected cells. This provides cellular selectivity, which reduces the molecule's interaction with the metabolic processes of host cells.


Molecular Action: Irreversible DNA Chain Termination

Once activated, the drug becomes an antimetabolite that competitively binds to the Viral DNA Polymerase, acting as a faulty building block. Upon incorporation into the viral DNA strand, it immediately halts replication by preventing further nucleotide addition, resulting in the obligate termination of the viral genome assembly.


Physiological Consequence and Mechanistic Limits

The irreversible synthesis arrest produces a virostatic physiological effect, arresting viral proliferation and reducing the systemic accumulation of new viral particles. However, this mechanism is entirely dependent on active replication and is therefore unable to affect the latent (dormant) viral DNA residing in nerve ganglia.

Dosage and Administration Information

The administration of Asile (Aciclovir) is based on standardized usage protocols to ensure the medicine is delivered through the appropriate route, dose, and frequency.

Official Administration Routes and Forms

Aciclovir is officially approved for oral, intravenous (IV) infusion, and topical administration, which dictates the available dosage forms. Oral forms include 200 mg to 800 mg tablets and oral suspension. The intravenous preparation is a powder for solution, and the topical preparation is typically a 5% cream.


Standard Dosing and Frequency Patterns

Usage Pattern Standard Adult Regimen Administration Principle
Acute Oral Use Typically 200 mg five times daily for 5 to 10 days, or 400 mg three times daily. Therapy should be initiated at the first sign of symptoms.
Chronic Suppressive Use Commonly 400 mg taken twice daily. Long-term use requires periodic interruption for reassessment.
IV Infusion Protocol Doses are calculated by body weight (e.g., 5 mg/kg) and administered every 8 hours. The solution must be infused slowly over at least one hour and not given as a rapid injection.

Contextual and Population-Specific Use

Oral medication may be taken with or without food, and patients are instructed to maintain adequate hydration with a full glass of water. A key procedural requirement is the adjustment of dosage for patients with renal impairment, including older adults, as the dose must be reduced based on the patient's creatinine clearance. For the IV route, solutions must be diluted to a concentration not exceeding 7 mg/mL before administration. The rules governing administration—which include specific dosing and adherence to defined infusion rates—standardize how this medicine is used in clinical practice.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Asile (Aciclovir)

This overview describes the landscape of scientific research and clinical evaluations for the active ingredient of Asile, Aciclovir. It summarizes what types of studies have been conducted, the conditions they examined, and the uncertainties or limitations that remain in the official scientific record. Research provides context for patterns observed in large groups of patients but does not determine whether an individual will respond.


Evidence for Use in Acute Severe Herpes Infections (Herpes Simplex Encephalitis)

Studies investigated the use of the intravenous formulation for managing severe central nervous system infections in adults, children, and neonates. Research monitored outcomes such as mortality rates and long-term neurological functioning. Studies observed a pattern in which lower mortality rates were reported in patient groups where treatment initiation occurred earlier.

Research is ongoing to characterize the optimal duration and administration strategy to support long-term neurological recovery. Data for certain subgroups, such as those with specific brain involvement patterns, remain insufficient.


Evidence for Suppression of Recurrent Herpes Simplex Outbreaks

Long-term Randomized Controlled Trials examined the continuous daily use of oral Aciclovir in individuals with frequently recurring genital or mucocutaneous herpes. Studies describe a pattern where the measured frequency of symptomatic recurrences was lower in the observed continuous administration groups compared to placebo groups over the study duration. This research includes recurrence patterns in both immunocompetent and various immunocompromised groups.

Long-term effects are not fully established beyond the observed follow-up durations of most trials, and research is ongoing to monitor the long-term patterns of drug resistance.


What is Still Uncertain About the Research Evidence

The available research is marked by several limitations. Comparative evidence is lacking for certain formulations against novel treatments on some clinical outcomes. Furthermore, findings were mixed in research exploring the optimal duration and dosing for the most severe infections. Formal RCTs are also limited for certain patient groups, such as those with specific comorbidities or pregnant populations.

Key Studies & References

  1. Acyclovir - StatPearls - NCBI Bookshelf - NIH (Informing approved and non-approved indications and general evidence context)
  2. Public Assessment Report Scientific discussion Aciclovir Accord 200 mg, 400 mg and 800 mg tablets (aciclovir) NL/H (Regulatory context, indications, and quality)

Frequently Asked Questions (FAQ)

Common questions about Asile (FAQ)

Q: What are the ingredients besides the active component in Asile? / Does Asile contain any common allergens like gluten or lactose?

The use of the medicine is defined as contraindicated if a person has a known hypersensitivity to the active ingredient or any other component of that specific formulation. Official product information states that Asile contains both the active component and non-active components, also known as excipients. While excipients vary by product form, some oral formulations have been noted in documentation regarding rare hereditary problems like lactose malabsorption.

Q: Are there any reported long-term side effects associated with Asile?

The long-term safety profile of Asile is established based on the duration of clinical trials conducted. Regulatory summaries indicate that effects beyond these established follow-up periods are not fully characterized. Regulatory documents note that research remains ongoing to monitor specific long-term patterns, which includes the topic of drug resistance.

Q: Does Asile interact negatively with common over-the-counter pain relievers?

Official interaction documentation does not list specific common over-the-counter pain relievers. However, the regulatory profile flags the need for caution when Asile is co-administered with any medicine classified as a potentially nephrotoxic agent. Combining Asile with these types of agents may increase the risk of kidney dysfunction, according to official statements.

Q: Does the effectiveness of Asile decrease over time?

Official research is noted as ongoing to monitor long-term patterns related to the medicine. This includes studying drug resistance, which refers to a situation where a virus may become less susceptible to the medicine over an extended period of use.

Q: Is Asile safe to use while breastfeeding?

Regulatory documents confirm that the medicine may pass into breast milk. Official documentation describes that use during lactation is to be considered only when the prescribing physician has determined that the potential therapeutic benefit to the patient outweighs the unknown risks to the nursing infant.

Q: Can taking Asile make you feel tired or drowsy? / Does Asile cause any changes in mood or behavior?

Official safety information lists feeling tiredness/fatigue and dizziness among the commonly reported side effects. More severe, but less frequent, effects affecting the central nervous system have also been reported, including temporary states of confusion, hallucinations, or unusual drowsiness.

Q: Do I need a special prescription or monitoring program for Asile? / Do I need to get regular blood tests while taking Asile?

Asile is designated as a prescription-only medicine. For patients with reduced kidney function, official documentation states that careful monitoring of kidney function and drug concentration in the blood is often required. This monitoring allows healthcare providers to adjust the dosage as needed.

Q: How quickly does Asile typically start working for most people?

Official administration protocols provide non-specific guidance on onset. The official administration principle for acute oral use specifies that therapy is often initiated at the very first sign of symptoms.

Q: Is it normal to feel a specific sensation when first starting Asile?

Official safety summaries describe that certain localized forms of the medicine, such as the topical cream, have been associated with common, transient local sensations. These sensations following application may include burning, tingling, or stinging on the skin.

Q: Where can I find the official summary of safety information for Asile?

Official drug information and patient summaries are provided by government health authorities. These resources include documents such as the NIH DailyMed or the patient information included with the FDA-approved label for the specific drug product.

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

The oral forms of the medicine should generally be taken whole as intended by the manufacturer. Regulatory documentation for certain oral formulations includes instructions that the medicine not be crushed, chewed, or split, as this may compromise the intended delivery of the drug.

Q: Does Asile affect blood pressure or heart rate?

Regulatory safety data has reported uncommon effects on the cardiovascular system. Rare cases of bradycardia (slowed heart rate) and hypotension (decreased blood pressure) have been noted, primarily associated with the intravenous infusion protocol.

Q: What should I know about the warning label for Asile?

Regulatory documents advise patients about the possibility of rare but serious adverse events, such as severe skin reactions (SCARs). Official warnings document the need to maintain adequate hydration, particularly for those receiving intravenous forms of the medicine.

Q: Can I drive or operate machinery safely while on Asile?

Regulatory patient information advises caution with activities like driving or operating machinery. Individuals should exercise caution if the medicine causes central nervous system effects such as dizziness or drowsiness.

Q: Does Asile interact with alcohol?

The official drug safety profile does not list alcohol as a direct drug-specific contraindication. Regulatory patient information generally suggests limiting excessive alcohol intake to avoid compounding potential side effects or dehydration.

Q: How does Asile affect sleep patterns?

Changes in sleep patterns have been reported in the list of adverse effects detailed in regulatory documents. Both difficulty sleeping (insomnia) and excessive sleepiness (somnolence) have been noted as potential effects of the medicine.

Q: Does taking Asile increase sensitivity to the sun?

Yes, official regulatory patient information notes that the medicine may cause the skin to become more sensitive to sunlight (photosensitivity). Official patient information mentions that regulatory guidance often recommends the use of appropriate measures, such as sun protection.

Q: What is the half-life of Asile?

The elimination half-life is a pharmacokinetic measure described in regulatory documents. Official data indicates that the mean elimination half-life after intravenous administration typically ranges from 2.5 to 3 hours in adults with normal renal function.

Q: Can Asile interact with oral contraceptives or hormone replacement therapy?

Regulatory patient information notes that if a female patient using a combined contraceptive pill or progestogen-only pill experiences vomiting or severe diarrhoea, the contraceptive may be less reliable. This is a general caution related to absorption disruption.

Q: Are there any official patient resources or guides for Asile?

Official patient resources and guides are provided by government health authorities. These may include patient-specific information from the NIH MedlinePlus or leaflets included with the FDA-approved label for the drug product.

How should Asile be stored and disposed of?

How to Store and Dispose of Asile?

The storage and disposal of Asile (Aciclovir) must adhere strictly to regulatory requirements to preserve product quality and safety.

Storage Conditions and Handling

Aciclovir products must be stored at controlled room temperature, generally between 15 C and 25 C. All forms must be kept in the original container, tightly closed, and protected from light and moisture.

Regulatory labeling specifies that the product must not be frozen. Furthermore, the oral suspension formulation must not be refrigerated to prevent crystallization. For safety, the medicine must always be stored out of the sight and reach of children.

Disposal Instructions

Expired or unused product should be discarded using an authorized drug take-back program or an official collection point, which is the preferred disposal method. If no program is available, follow the specific household trash disposal instructions provided by governmental health authorities. The medicine should generally not be disposed of via wastewater.

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

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