Engflag

Acic Cream

Quick links to important sections

Acic Cream

Acic Cream_PL

Treatment option:

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Acic Cream

Acic Cream: A Quick Overview

Property Description
Active ingredient Aciclovir (INN) 5% w/w
Form Topical Cream
Pharmacological class Antiviral, Synthetic Nucleoside Analog
Common use Early stage treatment of cold sores (herpes labialis)
Availability Often Over-the-Counter (OTC)

What is Acic Cream and What is Its Main Ingredient?

Acic Cream is a widely recognized topical pharmaceutical preparation intended for direct application to the skin to manage viral outbreaks. Its defining active ingredient is Aciclovir (INN), a compound recognized for its selective action against herpes viruses.

This medication is a synthetic drug, meaning the Aciclovir molecule is created through chemical processes. It is formulated as a semi-solid cream at a typical concentration of 5% w/w. This specific formulation is designed for local use, allowing the active component to be concentrated at the site of the infection to interrupt the viral spread on the skin surface.

What Class of Medicine is Acic Cream and How Does it Fight Infection?

Acic Cream is classified within the pharmacological class of antivirals, specifically as a synthetic nucleoside analog. Its therapeutic purpose is rooted in its ability to selectively target and interfere with the process of viral replication, thereby limiting the growth of the pathogen.

This selective mechanism makes it a key tool in managing infections caused by the Herpes simplex virus (HSV), which is the cause of cold sores. It is intended for early intervention to decrease the duration and severity of the outbreak. Prompt application helps achieve faster relief from symptoms.

When is Acic Cream Typically Used?

Acic Cream is generally utilized for managing localized, recurrent viral infections, most notably cold sores (herpes labialis) on the lips and face. Because the cream is often available Over-the-Counter (OTC), it is primarily positioned for quick treatment upon the earliest signs of an outbreak.

The cream's function is to help alleviate associated symptoms and shorten the healing time of the visible lesions. It is generally recommended to be applied during the prodrome phase (the initial tingling or itching sensation) to maximize its effect against the active viral replication.

Regulatory References

  1. NIH: Acyclovir - StatPearls

What side effects are possible with Acic Cream?

Possible Side Effects and Safety Information

The official safety profile for topical Aciclovir cream is dominated by localized application site reactions, reflecting the minimal systemic absorption of the active substance. Regulatory bodies classify adverse effects primarily under Skin and Subcutaneous Tissue Disorders and Immune System Disorders.

Frequency-Classified Adverse Reactions

The most frequently documented reactions are limited to the application site. According to regulatory classifications, effects listed as Uncommon (occurring in ≥ 1/1,000 to < 1/100 users) include a transient burning or stinging sensation immediately following application, mild drying or flaking of the skin, and itching.

Reactions categorized as Rare (≥ 1/10,000 to < 1/1,000) include erythema (redness) and contact dermatitis. Safety documents note that reactions such as contact dermatitis are often attributable to excipients in the cream base rather than the active ingredient itself.

Serious Adverse Reactions and Safety Constraints

Serious adverse reactions concerning the immune system are classified as Very Rare (occurring in < 1/10,000 users) in post-marketing experience. These include immediate hypersensitivity reactions such as angioedema and urticaria (hives).

Safety-related constraints require that the cream is contraindicated in individuals with known hypersensitivity to aciclovir, valaciclovir, or any component of the formulation. The cream is intended only for cutaneous application on the lips and face and is not recommended for use on mucous membranes (e.g., inside the mouth or eye) as it may be irritant.

Population-Specific Safety Notes

Regulatory documents provide safety notes for specific patient groups. The safety and effectiveness of the cream have not been fully established for use in pediatric patients younger than 12 years of age. Furthermore, the topical cream is generally not recommended for severely immunocompromised patients, who may require alternative systemic therapy.

Overdose and Emergency Response

Regulatory documentation confirms that overdose is generally considered unlikely following the local application of Acic Cream because of the formulation's design, which results in minimal systemic absorption. Furthermore, official prescribing information indicates that no untoward effects would be expected should the entire contents of a standard tube be acutely ingested orally.

However, the regulatory profile addresses scenarios of accidental ingestion. Specific clinical manifestations have been documented following the repeated oral ingestion of the topical formulation over a period of several days. These documented effects include the presentation of gastrointestinal disturbances such as nausea and vomiting, alongside neurological symptoms that may involve headache and confusion.

Urgent medical attention is required for any ingestion event. Individuals are mandated to immediately contact a poison control center for specific guidance. It is crucial to call local emergency services if the person who has ingested the cream exhibits severe signs, such as collapse, a seizure, or is experiencing respiratory distress (not breathing), as these are life-threatening scenarios.

The official management protocol states that no specific antidote is known for aciclovir overdose. Treatment is therefore defined as symptomatic and supportive. A specific procedural measure noted in official documents is that the active component is dialysable and can be removed via haemodialysis.

Therapeutic Uses of Acic Cream

What Acic Cream Treats: Main Uses and Benefits

Acic Cream is relevant for managing conditions characterized by recurrent Herpes labialis (cold sores), where it is commonly used to help with symptoms related to inflammatory or irritative states. This supportive treatment is applicable during acute episodes involving disruptive symptom patterns on the lips and face. The treatment is relevant for recurrent facial Herpes simplex virus infection and localized viral eruptions.

The cream provides supportive relief by addressing symptom clusters that may become intense or disruptive. It helps ease the early prodromal discomfort, such as the characteristic tingling, itching, or burning sensation, and supports the patient in managing the subsequent pain and soreness. This provides support that helps ease the overall symptom burden when short-term symptomatic assistance is needed. The cream may help contribute to easing the overall symptom load and duration of the visible lesion.

Quick Fact: Relief for Prodromal Discomfort

The cream is commonly applied during the earliest phase of an outbreak when patients experience tingling or itching, a time when supportive symptom management is commonly sought.

Regulatory References

  1. Acyclovir Topical: MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility for Acic Cream

Acic Cream (Acyclovir 5% topical) eligibility is defined by regulatory bodies based on population, age, and clinical status. The cream is approved for use in adults and adolescents 12 years of age and older for recurrent cold sores. Safety and effectiveness have not been established in pediatric patients less than 12 years of age according to regulatory documentation.

Absolute Contraindications and Restrictions

Classification Population or Condition
Contraindicated Patients with known hypersensitivity to aciclovir, valaciclovir, or any component of the cream formulation.
Use Not Recommended Application to mucous membranes (e.g., inside the mouth or nose) or to the eye.
Use Not Established Severely immunocompromised patients (e.g., transplant recipients); alternative treatments may be considered.

Pregnancy and Organ Function

Topical use results in minimal systemic absorption, which is why no dose adjustment is recommended for patients with renal or hepatic impairment. During pregnancy, use is considered acceptable only when the potential benefits outweigh unknown risks. For lactating mothers, the dose received by the nursing infant is considered insignificant.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Aciclovir 5% topical cream is primarily defined by its minimal systemic absorption following application to the skin. This low absorption rate is the foundational characteristic that guides the official statements regarding its interaction profile.

Official Regulatory Findings

Interaction Type Regulatory Conclusion
Systemic Drug Interactions Officially documented as unlikely due to low systemic exposure.
Contraindicated Combinations None listed. No specific medicinal products are formally prohibited for co-administration.
Metabolic or Transporter Effects None documented. Enzyme-mediated or drug-transporter interactions are not identified as clinically significant.
Food, Alcohol, or Supplements None known. Official sources report no known interactions with food, drinks, or alcohol.

The most important finding in authoritative government documents is the absence of clinically significant systemic drug interactions for the topical formulation. Regulatory agencies conclude that because the active ingredient, Aciclovir, is minimally absorbed into the bloodstream, it is not expected to interfere with the metabolism or clearance of other medicines. This means that official labeling does not specify any mandatory time-separation rules or restrictions on co-administration with other treatments.

Mechanism of Action

The mechanism of Aciclovir is highly specific and relies on a targeted, three-step molecular cascade to inhibit viral replication.

Viral-Enzyme Selective Activation

The inactive Aciclovir molecule is preferentially activated (phosphorylated) only by the Viral Thymidine Kinase enzyme, which is produced by the active virus within the infected host cell. This selective activation results in concentration of the active intermediate, Aciclovir Triphosphate, within the infected cell.

Genome Replication Interruption

The active drug form then targets the Viral DNA Polymerase, the enzyme responsible for synthesizing the new viral genome. It acts as a false building block, incorporating itself into the growing viral DNA chain. Because the drug lacks a necessary functional group, this incorporation immediately halts the synthesis process through DNA chain termination. This fundamental interruption prevents the virus from assembling new infectious particles.

Mechanism-to-Physiological Effect

The halting of genome synthesis results in suppression of the concentration of active virus particles within the tissue. This suppression of viral spread is the key physiological consequence stemming from the mechanism's action. The mechanism does not apply to the dormant, latent virus residing in the nerve cells due to the absence of the activating enzyme.

Dosage and Administration Information

How to Use Acic Cream

Acic Cream (Acyclovir 5% w/w) is a topical medication with standardized usage instructions defined for its application. Adherence to these guidelines is essential for the product's intended use.

Official Administration Protocol

The medicine is for cutaneous use only and must be applied directly to the skin of the lips and face; it must not be applied to mucous membranes such as the inside of the mouth, nose, or eyes.

Usage Parameter Standard Guideline
Initiation Timing Must be started as early as possible at the first sign of recurrence (e.g., tingling or itching) or first lesion appearance.
Dosing Quantity Apply a quantity sufficient to cover the affected area, including the outer margins of the lesion.
Dosing Frequency The cream is applied five times per day (approximately every four hours) during waking hours, omitting the nighttime dose.
Treatment Duration Use for a minimum of 4 days. If healing is incomplete, treatment may be continued for up to an additional 5 days (maximum total of 10 days).

Procedural Instructions and Age Rules

It is recommended to wash hands thoroughly before and after applying the cream to prevent the spread of the infection (autoinoculation or transmission). The dosing regimen is the same for adolescents 12 years of age and older as it is for adults. No specific dose adjustments are typically required for older adults using the topical formulation.

Recent Clinical Evidence

Research Evidence for the Treatment of Recurrent Cold Sores

This section provides a summary of the available research on Acic Cream (which contains Aciclovir 5% w/w) and its use for recurrent Herpes labialis, or cold sores. This information describes what was studied for this condition and what patterns the research has observed so far, without offering any clinical advice.

Types of Studies Available for Acic Cream

The main research that has been conducted for Acic Cream involves Randomized Controlled Trials (RCTs). These trials are designed to compare the measured outcomes between the active cream and a control cream (vehicle-controlled trial) that looks identical but contains no active ingredient. Systematic reviews and meta-analyses also exist, which are research that studies explored by combining and analyzing the data from many of these individual RCTs.

What Clinical Outcomes Were Examined in the Trials

Researchers in these trials explored outcomes related to physical discomfort and the timing of the healing process. A key measurement research examined was the time to complete healing of the lesion. The studies also monitored the duration of patient-reported outcomes describing perceived discomfort, such as tingling, itching, burning, and localized pain.

Research examined the measured patterns when application occurred during the earliest phase of the cold sore, known as the prodrome. Studies reported measurements where outcomes, such as the duration of symptoms and healing time, were observed to differ between the active cream group and the control groups.

Research in Specific Patient Groups

Data for certain groups remain insufficient. The populations that were observed in the main trials were typically immunocompetent adults—meaning adults who did not have a known weakened immune system. There are few data are available from the primary research to characterize the outcomes in children, older adults, or individuals with comorbid conditions that might affect the immune system.

Key Studies & References

  1. Topical and Systemic Therapeutic Approaches in the Treatment of Oral Herpes Simplex Virus Infection: A Systematic Review
  2. Public Assessment Report Scientific discussion Zoviduo (Acyclovir 5% and Hydrocortisone 1%) (SE/H/882/01)
  3. Acyclovir Topical: MedlinePlus Drug Information

Frequently Asked Questions (FAQ)

Common questions about Acic Cream (FAQ)

Q: What do I do if I forget a dose of Acic Cream?

If a dose is missed, official patient information advises applying it as soon as it is remembered. However, if it is almost time for the next scheduled application, official guidance advises skipping the missed dose and continuing with the regular application schedule. Do not apply extra cream to make up for the missed one.

Q: Can children younger than 12 use Acic Cream?

According to the official product information, the safety and effectiveness of this cream have not been established for use in pediatric patients younger than 12 years of age. Official documentation indicates the cream is approved for use in individuals 12 years of age and older.

Q: How long after the cold sore appears is it too late to start treatment?

Official regulatory documents and supporting studies emphasize that treatment is typically most effective when initiated as early as possible—ideally at the first sign of an outbreak, such as tingling or itching. Research suggests that starting treatment when the lesion is already fully formed may not provide the same level of benefit.

Q: What is the best way to clean my hands before and after applying the cream?

Patients are instructed to wash their hands thoroughly before and after applying the cream to prevent the spread of the infection. Official patient information specifies washing hands with soap and water for this procedural step.

Q: What should I do if my cold sore gets worse while using the cream?

Official patient information advises discontinuing use if symptoms worsen at any point during treatment, or if the cold sore has not started healing after the maximum recommended treatment period (typically 10 days). In these situations, users are generally recommended to consult a healthcare professional.

How should Acic Cream be stored and disposed of?

Storage and Disposal of Acic Cream

Acic Cream (Acyclovir Cream) must be stored in strict accordance with the official regulatory labeling to ensure product stability.

Storage Requirements

Requirement Type Official Regulatory Statement
Temperature Store at Controlled Room Temperature between 20 C and 25 C (68 F to 77 F). Store below 25 C and do not refrigerate or freeze.
Container Protection Keep the container tightly closed and store in the original container.
Child Safety Keep out of the sight and reach of children.
Stability Some documents specify the cream should be used within 15 days after first opening.

Disposal Instructions

Expired or unused Acic Cream must be discarded according to local regulations. This practice prevents environmental contamination, and the product should not be thrown away in household wastewater.

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

Equivalent of Acic Cream found in:

A-Z Index: