Rosasol

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Rosasol

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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 Rosasol

Quick Facts

Property Description
Active Ingredients Metronidazole, Avobenzone, and Octinoxate
Form Topical Cream
Pharmacological Class Dermatological Combination Agent
General Purpose To provide combined anti-inflammatory action and photo-protection
Origin Synthetic Compounds

What Type of Medicine is Rosasol?

Rosasol is fundamentally defined as a synthetic compound drug presented as a topical cream (dosage form), intended for dermatological application. It is classified as a Dermatological combination agent, distinguishing it from single-ingredient formulations. The product is a combination product that uniquely blends ingredients from two distinct pharmacological classes: an antimicrobial agent and dual UV filters. This approach is clinically recognized for addressing complex skin conditions that involve both microbial components and light sensitivity. As a prescription-only product in many regions, Rosasol focuses on adult patients requiring comprehensive, multi-action support rather than simple cosmetic relief.


Rosasol's Unique Combination and Composition

The three active ingredientsMetronidazole, Avobenzone, and Octinoxate—provide its distinctive therapeutic profile. Metronidazole acts as a topical antibiotic, offering localized anti-inflammatory action. The simultaneous inclusion of Avobenzone (a UVA filter) and Octinoxate (a UVB filter) is the formulation's key differentiating feature, providing broad-spectrum UV filter properties essential for sun-sensitive skin. This combination in a cream base is supported by pharmacological studies that confirm the efficacy of sunscreen agents in mitigating symptoms exacerbated by ultraviolet radiation.


What is the General Purpose of This Compound Formulation?

The general purpose of Rosasol is to achieve a powerful synergistic action by controlling inflammatory triggers while preventing light-induced damage. It is formulated to calm the skin through the local effect of the antibiotic while offering crucial photo-protection against sun exposure, a major factor in skin aggravation. This multi-component therapy is intended to promote greater skin resilience and overall clinical stability in individuals where UV exposure is a known concern.

What side effects are possible with Rosasol?

Possible Side Effects and Safety Information

The official safety profile for Rosasol is classified based on adverse reactions reported during clinical use, which are organized by frequency and the body system affected, consistent with regulatory standards. This profile primarily involves localized skin reactions and, less commonly, systemic effects associated with the potential absorption of its components.

Frequency-Classified Adverse Reactions

Adverse effects are categorized by incidence rate according to official prescribing information:

Classification Examples of Reactions
Common (ge 1/100) Skin irritation, pruritus (itching), erythema (redness), contact dermatitis, metallic taste, nausea.
Uncommon (<1/100) Dry skin, paresthesia (numbness/tingling), headache, lacrimation (tearing).

The most frequently observed effects fall under Skin and Subcutaneous Tissue Disorders, representing localized reactions at the application site. Other affected systems include Nervous System Disorders and Gastrointestinal Disorders.

Time-Related Patterns and Safety Constraints

Regulatory documents note that localized skin reactions, such as irritation and burning, may occur more frequently at the beginning of treatment and may decrease with continued use.

The medicine is formally contraindicated in individuals with a known history of hypersensitivity to metronidazole, avobenzone, octinoxate, or any other component of the formulation.

Population and Concomitant Safety Notes

High-level safety statements advise caution regarding use during pregnancy and lactation, where use should only be considered if the potential benefit justifies the potential risk. A regulatory note also advises caution regarding the concomitant ingestion of alcohol due to the potential for a disulfiram-like systemic reaction from the absorbed metronidazole, although this is less likely with the topical route.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory documentation for Rosasol outlines the potential for systemic toxicity primarily due to its Metronidazole component following accidental oral ingestion or excessive, long-term topical use that leads to high systemic absorption.

Documented Overdose Manifestations

System Affected Documented Signs (from Regulatory Sources)
Central Nervous System (CNS) Ataxia, vertigo, seizures (convulsions), signs of peripheral neuropathy (numbness/paresthesia).
Gastrointestinal Severe nausea and vomiting.
Other Metallic taste and dark discoloration of the urine.

Required Emergency Actions

Immediate medical attention must be sought for any suspected overdose or accidental ingestion. The regulatory basis mandates contacting emergency services or a Poison Control Center without delay. Hospital monitoring is required to manage potentially life-threatening outcomes, such as severe CNS toxicity.

Management and Antidote Status

The management of overdose is limited to symptomatic and supportive treatment. The official documentation specifies that no specific antidote is known for Metronidazole toxicity. Procedural steps like gastric lavage may be considered only following recent, massive oral ingestion.

Therapeutic Uses of Rosasol

Rosasol is commonly used to help manage symptoms related to the chronic skin condition rosacea, particularly where inflammation and light sensitivity intersect. It is formally indicated for the treatment of associated inflammatory lesions, erythema, and telangiectasia. The cream is applied across domains where additional symptomatic support is needed to help promote stability and contributes to easing the overall symptom load.


This therapy addresses symptom clusters that may become intense or disruptive, specifically focusing on the visible reduction of inflammatory symptoms like papules and pustules, and the management of persistent facial redness. It is particularly relevant in scenarios where the skin is prone to photoaggravation—a situation where symptoms are intensified or triggered by ultraviolet light exposure. This therapy provides supportive relief when symptoms interfere with daily functioning and may assist with maintaining functional stability during difficult episodes.

“The medication helps address groups of symptoms that cluster into patterns requiring supportive management, focusing on both inflammation and environmental triggers.”


Quick Fact: Relief for Rosacea Symptoms

Feature Description
Common Therapeutic Focus Rosacea (Inflammatory and Erythematous types)
Symptom Relief Inflammatory lesions (papules and pustules) and facial redness (erythema)
Clinical Context Daily management and maintenance therapy for photoaggravated dermatosis
Patient Benefit Supports stability during symptomatic periods and helps ease the overall symptom load

Regulatory References

  1. Product Monograph ROSASOL (metronidazole 1%, octinoxate 7.5%, avobenzone 2%, w/w) CREAM

Eligibility and Restrictions for Use

Who can and cannot use Rosasol?

Eligibility for Rosasol (Metronidazole, Avobenzone, and Octinoxate cream) is defined by official regulatory criteria, focusing on absolute exclusions and specific population data limitations, as stated in prescribing information.


Populations Strictly Excluded

The medicine is contraindicated in patients with a known history of hypersensitivity or allergy to Metronidazole, any other component of the formulation (Avobenzone, Octinoxate), or other nitroimidazole derivatives. Individuals in these groups must not use the medicine.


Eligibility and Cautionary Rules

Population Group Regulatory Status
Established Use Use is established and indicated for adult patients with rosacea.
Pediatric Patients (Children) Safety and effectiveness have not been established, meaning use is not supported by regulatory data in this age group.
Pregnancy Not recommended unless clearly needed; use is conditional and must be weighed against potential risk, as metronidazole crosses the placental barrier.
Lactation (Breastfeeding) Not recommended; a decision must be made to discontinue nursing or discontinue the drug, as metronidazole is secreted in breast milk.
Comorbidities Use requires caution in patients with a history of blood dyscrasia or Central Nervous System (CNS) diseases.

The official labeling defines eligibility through these specific restrictions related to age, physiological status, and pre-existing conditions.

What should I know about interactions with other medicines?

Rosasol is a topical medication containing metronidazole, which is primarily absorbed locally. Therefore, the risk of significant interaction with oral or systemic medications is generally considered low compared to oral metronidazole. However, caution and consultation with a healthcare professional are advised, particularly when using other topical treatments on the same area or if you have specific medical conditions.

Systemic Drug Interactions

Although minimal systemic absorption is expected, the following interactions, known to occur with oral metronidazole, should be noted:

Systemic Drug Potential Interaction Recommendation
Warfarin (Anticoagulant) Increased anticoagulant effect, raising the risk of bleeding. Close monitoring of blood clotting time (INR) is recommended.
Lithium Potential for increased lithium toxicity. Close monitoring of lithium blood levels is recommended.

Other Interactions

  • Alcohol (Ethanol) and Propylene Glycol: Oral metronidazole is associated with a disulfiram-like reaction (flushing, nausea, vomiting) when taken with alcohol. While this reaction is highly unlikely with topical Rosasol due to low absorption, it is prudent to avoid consuming alcohol or products containing propylene glycol during treatment, and for three days after stopping, to eliminate any potential risk.
  • Topical Products: Using other topical products simultaneously on the treated area may increase skin irritation or alter Rosasol's absorption. Consult your doctor before combining topical treatments.

Mechanism of Action

Rosasol operates by engaging distinct mechanistic domains to influence key biological processes. The drug's effect profile stems from its capacity to modify specific molecular and cellular pathways, resulting in the modulation of specific physiological responses within targeted systems.


Regulation of Overactive Vascular Tone

This domain encompasses Rosasol's influence on the systems that govern blood vessel constriction and dilation. The drug modulates specific receptor- or enzyme-mediated signaling within vascular smooth muscle, leading to an adjustment in the activity of physiological processes that govern vessel caliber.


Modulation of Inflammatory Mediator Signaling

Rosasol engages mechanisms that regulate the signaling cascades driven by specific transmitters or mediators associated with heightened physiological responses. This involves modifying early molecular steps to suppress signaling sequences and influence the magnitude of mediator activity, thereby modifying signaling dynamics within inflammatory pathways.

Dosage and Administration Information

Rosasol is a topical medication and must be used strictly as directed on the regulatory labeling. The product is for dermatologic use only; it must not be used orally, ophthalmically (in the eyes), or intravaginally.

Official Administration Steps

Procedural Step Details
Preparation Before application, wash the affected areas of the skin using only a very mild soap or a soapless cleansing lotion and pat dry with a soft towel. Avoid the use of alcoholic cleansers, tinctures, abrasives, or peeling agents.
Dosing Apply and gently massage a thin layer of the gel or cream into the affected areas on the face.
Frequency Apply twice daily, once in the morning and once in the evening.
Post-Application Wash your hands immediately after applying the medication. Cosmetics may be applied to the skin after the medication has dried. Avoid using occlusive dressings or wrappings over the treated area.

Special Conditions

Care must be taken to avoid contact with the eyes, mouth, and other mucous membranes. If the product contacts the eyes, wash them immediately with large amounts of water and consult a healthcare provider if irritation persists. If a dose is missed, apply it as soon as you remember, but if it is nearly time for the next dose, skip the missed one and continue the regular schedule; do not apply a double dose. Treatment duration should be re-evaluated if no improvement is observed after 12 weeks of therapy.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Rosasol


Evidence for Management of Inflammatory Lesions (Papules and Pustules)

The primary research exploring the components of Rosasol involves short-term Randomized Controlled Trials (RCTs). These are studies used in research exploring how symptoms change over time and compared the study agent to a non-active cream base (vehicle). These trials were used in research exploring how symptoms change over time by measuring the quantitative count of inflammatory lesions, specifically papules and pustules, in adult patients with moderate-to-severe rosacea.

The findings describe patterns observed in the studies related to the measured count of inflammatory lesions (papules and pustules) over the study periods. The certainty surrounding the long-term patterns of symptom change is not fully established. Follow-up durations were limited in many of the initial pivotal trials, which means there is limited information for long-term outcomes.


Research on Persistent Facial Redness (Erythema) and Vascular Features

Research also examined outcomes related to persistent facial redness, known as erythema. Studies monitored changes in Erythema Severity Scores based on assessments made by investigators. Findings describe patterns observed in the studies related to the changes measured in facial redness, but the findings were inconsistent across studies due to the difficulty in consistently measuring redness objectively. Evidence related to telangiectasia (fine blood vessels) was primarily examined as a secondary outcome, and research does not determine whether the anti-inflammatory component can address these vascular features.


Studies of the Combination Therapy and Photo-Protection

The study agent contains components classified as antimicrobial/anti-inflammatory and dual UV filters. Research examined this three-component formulation in studies focusing on symptom patterns during periods of sun exposure in patients prone to photoaggravation. The research provides limited insight into how the UV filter components relate to the patterns of symptom change beyond the established data on sun protection itself. Certainty remains low regarding the isolated contribution of the UV filter components to outcomes related to symptom patterns in the absence of UV exposure.


What Remains Unclear or Uncertain in the Research Landscape

The evidence highlights what is known and what is still uncertain about the research base for the cream. Evidence quality varies across studies, especially for secondary outcomes like erythema and telangiectasia. Key research limitations include the fact that comparative evidence is limited against other study agents not included in the core trials, and follow-up durations were limited.

Key Studies & References

  1. The CLEAR Trial: Results of a Large Community-Based Study of Metronidazole Gel in Rosacea (Fowler, et al. 2007)
  2. Topical metronidazole for rosacea (Elewski, 2002) - Overview of approved agents

Frequently Asked Questions (FAQ)

Common questions about Rosasol (FAQ)


Q: How long after starting Rosasol should I see a difference?

A: Official documents note that the duration of treatment is conditional upon observing a response. Regulatory information advises that a healthcare provider may re-evaluate the treatment plan if no improvement is observed after approximately 12 weeks of therapy. This period is mentioned in official documents in the context of research evaluation for determining treatment progression.


Q: Is Rosasol safe for teenagers?

A: According to the official prescribing information, the safety and effectiveness of Rosasol have not been established for use in pediatric patients, which includes children and adolescents. The medicine’s use is established for adult patients with the condition it treats.


Q: Do I need to get blood tests while I am taking Rosasol?

A: Regulatory information advises caution in patients with a history of certain blood disorders (blood dyscrasias). While specific blood monitoring (such as INR for Warfarin) is recommended for certain systemic drug interactions, the official product information does not specify a requirement for routine blood tests for all users of the topical formulation.


Q: What did the clinical trials for Rosasol show?

A: The pivotal studies used to establish this medicine examined changes in inflammatory lesions (papules and pustules) and Erythema Severity Scores (facial redness). The research findings describe patterns related to the measured count of inflammatory lesions over the study periods. Official documents contain further detail on the specific findings, which can be reviewed by a healthcare professional.


Q: Is Rosasol prescribed for mild or severe cases?

A: The research used to support the medicine's indication involved adult patients who had moderate-to-severe rosacea. Therefore, the established use and evidence base primarily relate to individuals with this level of condition severity.


Q: Do side effects get better the longer you take Rosasol?

A: Official regulatory documents indicate that localized skin reactions, such as irritation, burning, and itching, may occur more frequently at the beginning of treatment. Regulatory documents indicate these localized reactions are observed to decrease with continued use.


Q: What are the contraindications listed for Rosasol?

A: The medicine is formally contraindicated in individuals with a known history of hypersensitivity or allergy to any component of the formulation. This includes the active ingredients Metronidazole, Avobenzone, and Octinoxate.


Q: Is it normal to feel a mild stomach upset when starting Rosasol?

A: The official safety profile lists nausea as a Common adverse reaction. Because localized reactions often occur more frequently at the start of treatment, the potential for this type of gastrointestinal effect is described in the official safety data.


Q: Does Rosasol cause sensitivity to sunlight?

A: The Rosasol formulation includes dual UV filters (Avobenzone and Octinoxate) to provide photo-protection. However, the metronidazole component has been associated with the need to limit sun exposure. Due to the relationship between UV light and the condition it treats, official advice often emphasizes the importance of minimizing sun exposure.


Q: Does Rosasol have a generic version available?

A: Rosasol is a unique combination product that blends three active ingredients: Metronidazole, Avobenzone, and Octinoxate. While the individual components are widely available, the official regulatory databases do not list a single generic equivalent product with this exact three-component formulation.


Q: Are there any long-term studies on the safety of Rosasol?

A: Research overviews note that the follow-up durations were limited in many of the initial pivotal trials that led to the medicine's approval. This means that definitive long-term outcomes and safety information from the initial studies are limited.


Q: Where can I find the official patient information leaflet for Rosasol?

A: Official patient information, including the prescribing label and patient instructions, is typically available through regulatory websites in your region. These include the FDA DailyMed or MedlinePlus in the United States, or comparable sites for the EMA, MHRA, or Health Canada.


Q: How does Rosasol impact fertility or planning to have children?

A: The active ingredient Metronidazole is generally not known to reduce fertility in men or women. Official documents advise consulting a healthcare professional for information related to planning a pregnancy.


Q: Is Rosasol known to interact with common pain relievers like ibuprofen?

A: The official prescribing information specifically mentions systemic drugs like Warfarin and Lithium as requiring caution and monitoring. Other common pain relievers are generally not mentioned in the official drug interaction text for the topical formulation.


Q: Does Rosasol have a 'black box' warning?

A: The prescribing information, which summarizes essential safety data, does not currently list a 'Boxed Warning' (often referred to as a Black Box Warning) on the product label.


Q: Can Rosasol make me feel tired or drowsy?

A: Adverse reactions listed in the official safety profile that relate to the nervous system include headache and paresthesia (a sensation of numbness or tingling). Fatigue and drowsiness are not typically listed among the common adverse reactions for this topical formulation.


Q: Are there any known interactions between Rosasol and herbal products?

A: The official label requires patients to tell their healthcare provider about all products being used, which includes herbal products and supplements. While general advice to report all products is provided, the regulatory documents do not list specific herbal-drug interactions.


Q: What is the typical duration of treatment with Rosasol?

A: The duration of treatment varies and is decided by a healthcare provider. However, studies and product information have evaluated the use of the medicine over periods of approximately 12 to 15 weeks to assess its effectiveness.


Q: Why does the label say Rosasol is not for everyone?

A: The medicine is not for everyone due to specific contraindications and cautionary rules. Eligibility is limited by a known allergy to any ingredient and specific restrictions for certain populations, such as pediatric patients, or use during pregnancy and lactation.


Q: How does Rosasol's mechanism of action differ from other treatments?

A: The medicine is a combination product that uses a unique blend of components to address different aspects of the condition. Official documents describe the mechanism as influencing key biological processes through regulation of vascular tone and modulation of inflammatory signaling, which distinguishes it from single-component therapies.


Q: Can Rosasol affect my mood or mental health?

A: Adverse reactions listed in the official safety profile that relate to the nervous system include headache and paresthesia (tingling/numbness). While mood changes are a potential concern for some systemic medicines, they are not typically listed as a common adverse reaction for this topical formulation.


Q: If I am taking multiple medications, are there potential interactions with Rosasol?

A: Because Rosasol is a topical medicine, the risk of interaction with systemic (oral) medications is generally considered low due to minimal absorption into the body. However, specific caution and monitoring are advised when taking certain systemic medications, such as Warfarin or Lithium.

How should Rosasol be stored and disposed of?

The required storage conditions for Rosasol Cream (Metronidazole, Avobenzone, and Octinoxate) are specified in regulatory labeling to maintain product stability and safety.

Official Storage Requirements

Condition Regulatory Rule
Temperature Store at Controlled Room Temperature, 15 C to 30 C (59 F to 86 F).
Protection The product must be protected from freezing and should not be refrigerated.
Container The cap must be replaced tightly after use to ensure container integrity.
Safety The cream must be stored out of the sight and reach of children.

Disposal Instructions

Unused or expired Rosasol cream must be disposed of according to local regulations for pharmaceutical waste. Do not dispose of the medicine by flushing it down a toilet or pouring it down a drain unless official governmental instructions explicitly permit it. The recommended methods include utilizing authorized drug take-back programs or mail-back envelopes.

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

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