Altalex

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Altalex

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Medically reviewed

Laura Arias

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 Altalex

Property Description
Active ingredient Retapamulin (INN)
Form Topical Ointment
Pharmacological class Pleuromutilin Antibacterial
Common use Addressing localized bacterial skin infections
Origin Semi-synthetic

What is the Core Identity and Pharmacological Type of Altalex?

Altalex is the proprietary designation for a specific medicinal preparation whose Active Pharmaceutical Ingredient (API) is Retapamulin, officially classified within the Pleuromutilin Antibacterial Pharmacotherapeutic Group. This designation confirms the product is a targeted therapeutic agent, distinct from general consumer products. The API is of semi-synthetic origin, derived from a natural compound to enhance its pharmacological stability and activity.

The classification as a Pleuromutilin Antibacterial establishes its specific mechanism of action: it selectively inhibits bacterial protein synthesis, a crucial process required for microbial survival. This targeted function is clinically recognized and required for market authorization, ensuring the medicine meets a defined, evidence-based health requirement.

Composition: What Are the Active Ingredients and Forms of Altalex?

The formulation of Altalex is a Monotherapy Product, containing only Retapamulin as its active component, integrated into a base suitable for skin delivery. Its single Dosage Form is a Topical Ointment, which necessitates the Cutaneous Route of administration for localized effect.

This thick ointment acts as the Base/vehicle, optimized to maintain the active ingredient at the site of infection and facilitate gradual absorption into the skin. This Topical Preparation delivery system is a key differentiator, contrasting with systemic antibiotics typically delivered orally.

What side effects are possible with Altalex?

Possible Side Effects and Safety Information

The official safety documentation for Altalex (Retapamulin) primarily identifies effects that occur at the application site. Adverse reactions are classified according to regulatory standards based on frequency and are grouped by physiological system.


Adverse Reaction Classification

Common Adverse Reactions (documented in ge 1% of patients in clinical studies) include application site irritation, application site pruritus (itching), headache, diarrhea, and nasopharyngitis. Less frequent reactions (uncommon, or < 1%) include application site pain, erythema, and contact dermatitis.

System-Organ Class Involved Key Documented Reactions
General Disorders & Administration Site Irritation, Pain, Pruritus, Erythema
Nervous System Disorders Headache
Gastrointestinal Disorders Diarrhea, Nausea
Immune System Disorders Hypersensitivity, including Angioedema

Safety Considerations and Limitations

Potentially serious adverse reactions include hypersensitivity events, specifically the potential for angioedema, which is an officially documented immune system disorder. The medicine is strictly contraindicated in individuals with known hypersensitivity to the active substance or any formulation component.

Regulatory documents explicitly state that this ointment is not for systemic or mucosal use (oral, ophthalmic, intranasal, or intravaginal). Epistaxis (nosebleed) has been reported with inappropriate use on nasal mucosa. Prolonged use carries the documented risk of promoting the overgrowth of non-susceptible organisms.

For pediatric patients younger than 24 months, co-administration with strong CYP3A4 inhibitors is not recommended due to higher documented systemic exposure in this age group. Use during pregnancy or lactation is advised only when the potential benefit is determined to justify the potential risk.

Overdose and Emergency Response

Overdose and when to seek help — Official Regulatory Information for Altalex

Overdose Scope

Official regulatory documents state that overdosage with Retapamulin Ointment has not been reported in clinical trials, which is consistent with the product's topical nature. Any theoretical signs or symptoms of overdose may result from excessive or prolonged application or, primarily, from accidental oral ingestion of the ointment. The official label does not define specific physiological systems affected by an overdose, concentrating on the potential need for care following accidental exposure. The primary exposure-related risk factor detailed in prescribing information is the ingestion of the product.

Emergency Response and Management

Immediate medical help must be sought if accidental oral ingestion of the medicine occurs. You must contact a Poison Control Center or emergency services right away, particularly if the individual is displaying severe systemic symptoms. Urgent attention is required if manifestations include trouble breathing or passing out.

In the event of a suspected overdose, there is no known specific antidote. Regulatory documents confirm that management of any clinical manifestations should be strictly symptomatic and supportive, consistent with established good clinical practice principles.

Overdose Classification

The lack of documented clinical experience and absence of a known counteracting agent defines the regulatory profile. The label emphasizes symptomatic supportive care as the mandatory management measure.

Therapeutic Uses of Altalex

What Altalex Treats: Main Uses and Benefits

Supportive Relief for Acute Skin Manifestations

The medicine is relevant in contexts marked by increased discomfort or tension across domains of superficial bacterial skin infection. This medicine is commonly used for the short-term management of conditions like impetigo. The medicine helps address symptom clusters that may become intense or disruptive, particularly those characterized by weeping, oozing, and crusting often associated with acute skin conditions. “It is relevant when short-term symptomatic assistance is needed for these bacterial skin presentations.”

Addressing Symptom Clusters in Minor Skin Lesions

Altalex is applied across domains where additional symptomatic support is needed. It is relevant in situations where symptoms may intensify in minor skin lesions, such as cuts, scrapes, or areas of pre-existing dermatitis. Altalex is commonly used to help manage the visible symptoms of active skin infection, including the presence of crusts and exudate from the lesions. The medicine may assist with easing symptoms related to localized discomfort, which supports general well-being during symptomatic phases.

Quick Fact: Relief for Exudative Skin Symptoms
Altalex is commonly used to help manage the visible symptoms of active skin infection, including the presence of crusts and exudate from the lesions.

Eligibility and Restrictions for Use

Who can and cannot use Altalex?

The eligibility for Altalex (Retapamulin Topical Ointment) is defined by regulatory standards concerning age, allergies, and the specific site and type of skin infection. The medicine is strictly restricted for topical use only.

Population Status Eligibility Rule
Approved Use Established for adults, adolescents, and children 9 months of age and older. Use in patients with hepatic or renal impairment requires no dosage adjustment due to minimal systemic absorption.
Contraindicated Use Must not be used by patients with a known or suspected hypersensitivity to retapamulin or any component of the ointment.
Restricted or Limited Use Safety and effectiveness have not been established in infants less than 9 months of age. It is not recommended for children under two years old who are receiving strong CYP3A4 inhibitors.
Use Prohibited By Condition Altalex must not be applied to mucosal surfaces (e.g., eyes, nose, mouth) or used for infections known or thought likely to be caused by MRSA, abscesses, or cellulitis. Application is limited by total surface area (e.g., up to 100 cm² in adults).
Pregnancy and Lactation Use during pregnancy should only be considered when topical therapy is clearly indicated and is deemed preferable to systemic treatment. Caution is advised during breastfeeding as safe use is not established.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Interaction patterns for Retapamulin topical ointment (Altalex) are defined by pharmacokinetic factors, primarily due to metabolism by the CYP3A4 enzyme. Because the medicine is applied to the skin and generally achieves low systemic absorption in most patients, the majority of drug interactions are considered not clinically important.


Documented Interaction Restrictions

Metabolic Pathway Interaction: Retapamulin is a substrate of CYP3A4. Co-administration studies with Oral Ketoconazole, a strong CYP3A4 inhibitor, showed an increase in Retapamulin exposure (AUC and C max) by 81%. Despite this change, no dosage adjustments are deemed necessary for adults or children two years of age and older.

Population-Specific Prohibition: Co-administration with Strong CYP3A4 Inhibitors is not recommended for pediatric patients younger than 2 years of age. This restriction is mandatory because this age group is documented to have higher systemic exposure, increasing the risk associated with the CYP3A4 interaction.

Administration-Timing Rule: The concurrent application of other topical medicinal products to the same area of skin is not recommended. This restriction is in place because the combined effect on absorption has not been formally studied. No clinically significant interactions with food, alcohol, or herbal products are formally documented.

Mechanism of Action

The active ingredient, Retapamulin, exerts its effect by targeting the bacterial 50S ribosomal subunit, which mediates protein synthesis inhibition. This highly selective mechanism arrests the microbial cell's ability to synthesize necessary proteins by binding at a unique pocket near the peptidyl transferase center. The molecule functionally blocks the initiation and elongation of peptide chains, modifying early molecular steps of the translational pathway. This action results in the rapid loss of bacterial viability, generating a focused anti-synthetic effect that causes localized cellular disruption in the bacterial population. The mechanism is intrinsically inactive against Gram-negative bacteria due to the molecule's restricted penetration of the outer cell membrane. Efficacy is further constrained by acquired bacterial resistance, such as mutations in the ribosomal target or the activation of specific efflux pumps.

Dosage and Administration Information

How to Use Altalex

The administration of Altalex, which contains the active ingredient Retapamulin, follows a standardized topical protocol. The medicine is exclusively manufactured as a 10 mg/g (1% w/w) ointment and is for cutaneous use (application to the skin). It is explicitly not to be used orally, in the eyes, or in any internal orifices, such as the nose or vagina.


Standard Dosing Regimen

Feature Guideline
Application Method Apply a thin layer of the ointment to cover the entire affected area.
Frequency and Duration The ointment is applied twice daily (every 12 hours) for a course that typically lasts 5 days.
Area Limitation The total treated area for adults must not exceed 100 cm^2.
Dressing The treated area may be covered with a sterile bandage or gauze dressing after application, if desired.

Population-Specific Usage

Altalex is for use in patients aged 9 months and older. The treated area for pediatric patients should not exceed 2% of the total body surface area. For both older adults (65 years and older) and patients with renal or hepatic impairment, no dosage adjustment is necessary for the use of the ointment. If a scheduled dose is missed, it should be applied as soon as the lapse is noticed, unless the time for the next scheduled dose is near, in which case the standard schedule should be resumed.

This structured approach defines the standardized application method, frequency, and duration for the medicine, ensuring its use adheres to established parameters.

Recent Clinical Evidence

Altalex: Recent Clinical Evidence

This overview describes the types of clinical studies that have been conducted on Altalex (Retapamulin) and what those studies examined, according to official regulatory and scientific sources. This information is provided to contextualize the medicine's development and does not include advice on its use.


Evidence for Use in Primary Impetigo

Research examining Altalex was conducted in study settings focused on acute, superficial bacterial skin infections, such as impetigo, and primarily consists of short-term, randomized controlled trials (RCTs). These trials were applied in studies examining patient experiences with localized infections. Primary outcomes monitored included Clinical Success, reflecting the investigator’s assessment of how lesions evolved, and Microbiological Success, monitoring the presence or absence of the original S. aureus or S. pyogenes bacteria.

Short-term studies monitored patterns where the measurements for Clinical and Microbiological Success in the Altalex groups were observed in some studies at a higher rate compared to the measurements observed in the placebo groups. Comparative research examined whether the measurements observed followed patterns similar to those seen with active comparator treatments.


Evidence for Use in Secondarily Infected Traumatic Lesions (SITL)

Altalex was evaluated in studies exploring its role in secondary infections of minor traumatic skin lesions (SITL). Studies monitored outcomes linked to inflammatory states using symptom scores that assessed features like exudate and crusting. Findings related to Clinical Response were observed in some studies to be similar between the 5-day topical Altalex regimen and an oral comparator. However, findings were mixed across the placebo-controlled studies, where some trials reported high rates of symptom evolution in the placebo group, limiting certainty.

Available research findings do not extend to larger or deeper infections, as they apply only to localized lesions generally measuring le 100 cm^2 in total area. Comparative evidence is lacking for some topical comparisons, and long-term outcomes are not well characterized, as research exploring long-term symptom change patterns or recurrence is limited.

Key Studies & References Retapamulin for impetigo: a randomized, double-blind, multicenter, placebo-controlled trial in children and adults

Frequently Asked Questions (FAQ)

Common questions about Altalex (FAQ)

Q: What happens if I miss a scheduled dose of the ointment?

If a dose of Altalex is missed, official product information advises applying it as soon as the lapse is noticed. However, if the time for the next scheduled application is near, the standard twice-daily schedule should be resumed.


Q: Is Altalex a good treatment for MRSA infections, abscesses, or cellulitis?

Regulatory documents indicate that Altalex is specifically approved and indicated only for the topical treatment of uncomplicated skin infections, such as impetigo. It is not indicated for more extensive or severe infections, including MRSA, abscesses, or cellulitis, and its effectiveness for these conditions has not been established.


Q: Can I use a strong CYP3A4 inhibitor with Altalex if I am over 65 years old?

According to official prescribing information, no dosage adjustment is considered necessary for adults, including those 65 years and older, when Altalex is used concurrently with strong CYP3A4 inhibitors. This population generally achieves low systemic exposure of Altalex.


Q: Can I use Altalex ointment while I am pregnant or breastfeeding?

Use during pregnancy is advised only when topical antibacterial therapy is clearly indicated and is preferred over a medicine taken systemically (by mouth or injection). Caution is advised during breastfeeding because it is not known if the medicine passes into human breast milk.


Q: What do I do if I accidentally get Altalex in my eye or nose?

Altalex is for use on the skin only and must be kept away from the eyes and mucous membranes (such as the lining of the nose or mouth). Caregivers are officially advised to wash their hands after application to avoid accidental transfer to these sensitive areas. The excipient in the medicine may cause irritation if contact occurs.


Q: What are the ingredients in Altalex other than the active one (Retapamulin)?

The active ingredient in Altalex is Retapamulin. The ointment base, or vehicle, is primarily made of white petrolatum. Official product descriptions also list Butylated Hydroxytoluene (BHT) as an excipient (an inactive ingredient) in the formulation.

How should Altalex be stored and disposed of?

Storage and Disposal Requirements for Altalex (Retapamulin Ointment)

The official labeling mandates specific conditions to maintain the stability and safety of Altalex ointment. The product must be stored at a temperature not above 25°C and protected from excessive heat and moisture. It is required to keep the ointment in its original container, which must be kept tightly closed when not in use.

Access and Stability

Storage Constraint Requirement
Child Safety Must be stored out of the sight and reach of children.
Expiry Date Do not use the medicine past the expiry date printed on the packaging.

Disposal

Unused or expired ointment should be disposed of via a community drug take-back program or by returning it to a pharmacist. If these options are unavailable, the FDA advises mixing the medicine with an undesirable substance (such as dirt) and placing the mixture into a sealed container before discarding it in the household trash.

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

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