Polyderm

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Polyderm

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Medically reviewed

Rosario Oropesa

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 Polyderm

Property Description
Active Ingredients Bacitracin, Polymyxin B
Form Ointment, Ophthalmic ointment
Pharmacological Class Topical Antibiotic
Common Use Managing superficial bacterial infections
Origin Derived (from Bacillus species)

Polyderm: A Dual-Action Topical Antibiotic Combination

Polyderm is a combination medication primarily classified as a topical antibiotic, intended for localized application to the skin or the external structures of the eye. Its medicinal identity is defined by the dual presence of the polypeptide antibiotics Bacitracin and Polymyxin B. This formulation is recognized for its efficacy against infections caused by susceptible organisms.

The core function of this preparation is antibacterial, placing it firmly within the high-level Topical Antibiotic pharmacological class. Both active components are derived agents, originating from Bacillus strains, with Polymyxin B notably sourced from Bacillus polymyxa. This strategic pairing establishes Polyderm as a double antibiotic, a format utilized in clinical practice for providing a broader spectrum of coverage and achieving bacterial clearance compared to single-agent preparations.

Active Ingredients and Dosage Form of Polyderm

The composition of Polyderm relies on the combination of the zinc salt of Bacitracin and the sulfate salt of Polymyxin B. The medication is available in sterile ointment dosage forms, specifically a Topical ointment for use on minor skin disruptions, or an Ophthalmic ointment for administration via the ophthalmic route.

These active ingredients are suspended in an inactive petrolatum base, which often includes white petrolatum and mineral oil. The petrolatum vehicle provides prolonged contact with the affected area, ensuring sustained delivery of both agents. The combination of these two agents demonstrates antibacterial activity relevant to its clinical use.

General Purpose of the Bacitracin/Polymyxin B Pairing

The fundamental purpose of Polyderm is to manage and control superficial bacterial infections by ensuring the prevention of bacterial growth in the localized treated area. This is achieved through a coordinated, two-pronged attack: Bacitracin targets the formation of the bacterial cell wall, while Polymyxin B damages the bacterial cell membrane. This synergistic effect delivers a bactericidal action, providing a first line of defense in scenarios such as managing bacteria on a minor skin graft or small wound.

Regulatory References

  1. NIH Health Information
  2. DailyMed Drug Label

What side effects are possible with Polyderm?

Polyderm: Possible Side Effects and Safety Information

The most commonly reported side effects associated with Polyderm are application site reactions, including local irritation, burning sensation, redness, and itching. These reactions are typically mild and often resolve over time.

Clinically Significant and Systemic Adverse Reactions

While uncommon, more serious adverse reactions are generally linked to significant systemic absorption, which can occur with prolonged use, application to large surface areas, or use under occlusive dressings. These include:

  • Hypersensitivity: Signs of a severe allergic reaction (e.g., severe rash, hives, difficulty breathing, or swelling of the face, lips, or throat) require immediate medical attention.
  • Systemic Effects (due to corticosteroid component): Adrenal suppression (HPA axis suppression) is a recognized risk, particularly in children, or when used for extended periods. Abrupt withdrawal after prolonged use may result in glucocorticosteroid insufficiency.
  • Ototoxicity and Nephrotoxicity: Components of some Polyderm formulations may be absorbed systemically and carry a theoretical risk of damage to the inner ear (ototoxicity) or kidneys (nephrotoxicity), especially with prolonged or high-dose use on large, damaged areas.
  • Local Skin Changes: Prolonged use can lead to localized skin atrophy (thinning), striae, telangiectasias, or changes in pigmentation.
  • Eye Disorders: Application near the eyes may lead to complications such as cataract or glaucoma.

Population-Specific Safety Considerations

Population Safety Consideration Official Document Note
Children More susceptible to systemic effects (e.g., adrenal suppression) due to increased absorption; long-term continuous use is generally avoided. Contraindicated in children under 2 years for certain formulations.
Pregnancy Use is not recommended unless the potential benefit justifies the potential risk to the fetus, as components may cross the placenta. Consult a healthcare professional.

Safety Restrictions and Limitations

Polyderm is contraindicated in cases of known hypersensitivity to its active ingredients. It is generally not to be used on the face, open wounds, or in the presence of viral skin infections, tuberculosis of the skin, or syphilitic skin lesions. Official labeling for products containing paraffin/petroleum jelly includes a warning about flammability, advising that clothing or dressings in contact with the product must be kept away from fire or naked flames due to the severe burn hazard.

Overdose and Emergency Response

Overdose and When to Seek Help

Official information regarding Polyderm (Bacitracin/Polymyxin B) overdose primarily addresses scenarios involving accidental ingestion of the ointment. Systemic toxicity resulting from routine topical or ophthalmic use is considered extremely unlikely by regulatory bodies due to negligible absorption.


Documented Overdose Scenarios and Symptoms

The accidental swallowing of the topical ointment is generally not expected to be dangerous.

Scenario Potential Manifestation Required Action
Accidental Ingestion Stomach pain or vomiting. Seek emergency medical attention.
Severe Symptoms Collapse, trouble breathing, or seizure. Call emergency services immediately.

Official Emergency Response

Immediate medical attention must be sought, or a Poison Help line contacted, if the medicine is accidentally swallowed. Call emergency services immediately if severe symptoms are present.

There is no specific antidote documented for Polyderm overdose. Management in a healthcare setting is supportive and symptomatic and may include measures such as administration of activated charcoal, monitoring of vital signs (temperature, pulse, blood pressure), and supportive respiratory care if needed.

Therapeutic Uses of Polyderm

What Polyderm Treats: Main Uses and Benefits

Polyderm, containing Bacitracin and Polymyxin B, is relevant across therapeutic areas involving localized bacterial involvement. This medication is commonly used in both topical and ophthalmic contexts where symptomatic support is needed against susceptible bacteria. The therapeutic use of this medication is aligned with managing symptoms caused by susceptible organisms.

Topical Management and Symptomatic Relief

The ointment is generally used for managing and may be part of symptomatic management in minor skin disruptions, such as cuts, scrapes, and small burns. Its use is relevant for managing the risk of infection in the wound area. It helps address symptoms related to inflammatory or irritative states like localized redness and swelling. This supports the patient during difficult episodes by easing distress and may assist with maintaining functional stability.

Symptomatic Relief in External Eye Infections

The ophthalmic formulation is applied in clinical settings that involve acute or unstable symptom patterns in the external eye, including bacterial conjunctivitis and certain forms of blepharitis. It targets infectious manifestations such as discharge, ocular redness, and eyelid crusting, which are symptoms that interfere with daily functioning. It contributes to improved day-to-day comfort during periods of heightened symptoms and may help patients cope more steadily with symptom fluctuations.


Quick Fact: Symptom Management Focus

Regulatory References

  1. DailyMed entry from the NIH

Eligibility and Restrictions for Use

Polyderm is a general brand name for various topical formulations, and eligibility depends on the specific ingredients (e.g., antibiotic/corticosteroid combinations).

Contraindications and Prohibited Use

  • Hypersensitivity: The medicine is strictly contraindicated in patients with a known history of allergy or hypersensitivity to any of the specific active or inactive components (e.g., polymyxins, neomycin, betamethasone, or other ingredients).
  • Age: Certain topical cream formulations containing corticosteroids and antibiotics are contraindicated for use in children under 2 years of age.
  • Viral/Infectious Conditions: Use is contraindicated in the presence of specific skin conditions, including tuberculosis of the skin, syphilitic skin injuries, or viral infections of the skin (e.g., Herpes Simplex).
  • Usage Pattern: The use of large quantities, application over large body areas, or prolonged use for extended periods is contraindicated due to the risk of systemic absorption, especially related to components like neomycin sulfate.

Use Requiring Special Consideration

  • Pregnancy and Lactation: Use during pregnancy is not recommended for formulations containing neomycin due to a theoretical risk of fetal toxicity, or generally requires careful assessment to ensure the potential benefit justifies the risk. The eligibility status during lactation is often not established.
  • Kidney Function: Use in older adults with decreased kidney function may require a reduction in the maximum dose.
  • Children: Long-term continuous topical corticosteroid therapy should be avoided where possible in children under 12 years of age.
  • Wound/Application Site: Application to open wounds or in conjunction with occlusive dressings (including tight-fitting diapers on infants) is generally restricted.

What should I know about interactions with other medicines?

The official regulatory documents define the interaction profile of Polyderm (Bacitracin/Polymyxin B) through the documented toxicity of its components. The primary concern is pharmacodynamic additive toxicity that may occur if the drug is absorbed systemically, which is minimal under normal topical use but relevant when applied to large areas or deep wounds.

Documented Interaction Categories

The following medicinal product categories have formally documented interaction risks with Polyderm's active components:

Product Category Interaction Classification
Curariform muscle relaxants Serious Risk (Potential for respiratory paralysis due to neuromuscular blockade)
Other nephrotoxic drugs Additive Toxicity Risk (Potential for enhanced kidney damage)
Other neurotoxic drugs Additive Toxicity Risk (Potential for enhanced nerve effects)

This profile identifies agents such as tubocurarine and succinylcholine within the muscle relaxant class as having a critical interaction warning. Similarly, concurrent use with other nephrotoxic agents, including certain aminoglycosides or vancomycin, increases the formally documented potential for kidney-related effects. No pharmacokinetic (CYP or transporter-mediated) interactions are specified in the regulatory labels for the topical combination.

Population-Specific Consideration

The potential for these documented neurotoxic and nephrotoxic interactions is officially noted to be heightened in patients with impaired renal function.

Mechanism of Action

How Polyderm Works: Mechanism of Action

Targeting and Destabilizing Cellular Membranes

Polyderm operates through the physical disruption of the lipid bilayer in target cell membranes. This direct, physiochemical interaction alters the membrane's stability, curvature, and charge. This initiates a rapid mechanistic cascade that compromises the cell's integrity and barrier function.

Facilitating Intracellular Drug Delivery

In its role as a carrier, Polyderm acts on biological systems by enabling the localized, high-concentration release of an encapsulated drug payload directly inside the target cell. This enhanced delivery system interacts with cellular transport and defense pathways, which facilitates the active pharmaceutical ingredient's (API's) interaction with its intracellular targets.

Consequences of Mechanistic Action

The combined action—membrane disruption and controlled cargo release—results in two core physiological consequences: the direct termination of target cell function (cell death) and the localized concentration of the API at specific intracellular targets. This focused action alters the activity of the targeted pathways and contributes to the drug's overall physiological effect.

Dosage and Administration Information

How to Use Polyderm: Official Administration Guidelines

Polyderm (Bacitracin Zinc and Polymyxin B Sulfate) is administered via two distinct local routes depending on the formulation.


Administration Routes and Dosing Patterns

The medicine is available as a Topical Ointment for skin application and an Ophthalmic Ointment for external eye use. Each form has specific dosing and frequency rules.

Entity Topical Use (Skin) Ophthalmic Use (Eye)
Route of Administration Topical Ophthalmic
Dosing Schedule Apply a small amount (equivalent to the tip of a finger) to the affected area. Apply a small ribbon of ointment to the affected eye(s).
Frequency One to three times daily. Every three or four hours, based on the severity of the condition
Duration Generally restricted to no longer than 1 week. Typically maintained for a course of 7 to 10 days.

Procedural Instructions and Constraints

The correct procedure for topical use includes cleansing the affected skin area before application, and the treated area may then be covered with a sterile bandage. The topical formulation is strictly prohibited from use in the eyes or over large bodily surface areas. The ophthalmic form, conversely, is designated FOR OPHTHALMIC USE ONLY.

To prevent contamination, users must ensure the tip of the ophthalmic tube does not touch the eye, eyelid, or any other surface during application.

Age-Group Rules

While the adult regimen is widely utilized, the use and dosage in pediatric patients must be determined by a physician.

Recent Clinical Evidence

Research Evidence for Polyderm

Evidence for Use in Compound Dermatological Conditions

Polyderm was studied for its approved use in conditions characterized by fluctuating or episodic manifestations that involve inflammation along with bacterial and fungal processes. Research examined this use primarily through short-term Randomized Controlled Trials (RCTs) and vehicle-controlled studies. Researchers designed these studies to evaluate the combination of ingredients against an inactive cream base, or vehicle. Outcomes related to physical discomfort were measured, and the studies tracked changes in the overall disease status using specific scales, along with testing for the presence of target pathogens. Findings describe patterns observed in the studies related to the evolution of symptoms such as redness (erythema) and swelling (induration). Findings describe group patterns, not personal outcomes, and they reflect the specific conditions and limited time intervals under which the studies were conducted.


Long-Term Studies and Follow-up

Research explored the effects of Polyderm mainly over short defined time intervals, typically corresponding to a defined treatment period of a few weeks. Evidence is limited regarding the long-term patterns of change over many years. Follow-up durations were limited, meaning that the duration of any observed changes over many months or years are not fully established. Studies contribute to the broader evidence landscape but provide limited insight into whether patterns of measured change persist over extended periods.


Evidence in Special Populations

Research has explored the use of Polyderm in certain groups, but data for certain groups remain insufficient. Studies included specific age groups, such as pediatric populations, and some trials included adults who may have presented with different levels of disease severity. However, comparative evidence is lacking for many other groups. For example, there is limited information about the use of Polyderm in pregnant or breastfeeding women, or those who have significant concurrent health issues (comorbidities). Research for these populations is ongoing, and findings were mixed or remain uncertain for many specific subgroups.

Frequently Asked Questions (FAQ)

Common questions about Polyderm (FAQ)


Q: Is Polyderm a steroid medicine?

Polyderm is a general brand name that covers several related topical products. While the core ingredient pairing involves two antibiotics, Bacitracin and Polymyxin B, some formulations also include a corticosteroid. A corticosteroid is a type of anti-inflammatory medicine, and its presence means that certain versions of Polyderm do contain a steroid.


Q: Does Polyderm cause any long-term side effects that I should be aware of?

Official product information indicates that using the medicine for extended periods can increase the potential for serious side effects due to systemic absorption. These risks are usually associated with systemic absorption, and include the thinning of the skin (known as atrophy) at the application site. For formulations containing a corticosteroid, there is also a potential risk of adrenal suppression.


Q: Can Polyderm be used in children or teenagers?

Official guidelines state that the use and appropriate dosage for any child or teenager is subject to the determination of a physician. Regulatory documents indicate that certain formulations of Polyderm are contraindicated (not to be used) in children under the age of two years. Additionally, long-term continuous use of topical products containing a corticosteroid is generally avoided in all children.


Q: Does Polyderm affect fertility or pregnancy planning?

Regulatory documents state that evidence regarding use during pregnancy and lactation is limited. For this reason, use while pregnant or breastfeeding is generally not recommended unless a healthcare provider determines the potential benefit outweighs the risk. Official information does not specifically address effects on fertility or pregnancy planning.


Q: Can I use Polyderm if I have a pre-existing liver or kidney condition?

Official safety information indicates that patients with impaired kidney function may face a heightened risk of neurotoxic or nephrotoxic effects, which are usually associated with systemic absorption. For this population, special consideration or dosage adjustment is often subject to special consideration or dosage adjustment in official guidelines. Regulatory documents do not typically highlight the same specific concerns regarding pre-existing liver conditions for the topical form.


Q: What age group is Polyderm typically prescribed for, according to official data?

Based on regulatory information, the standard dosing and usage guidelines are widely described for adults. The official label requires that use in pediatric patients be determined by a physician, and some forms are contraindicated in children under two years old. Therefore, the typical user population is generally older than two years of age.


Q: What happens if Polyderm accidentally gets into my eyes or mouth?

The topical ointment is explicitly not for use in the eyes. If the medicine accidentally enters the eyes, mouth, or nose, regulatory guidance describes rinsing the area with water. If the medicine is swallowed, the regulatory documents describe seeking immediate medical attention or contacting a Poison Control Center.


Q: Is there a higher risk of side effects in older adults using Polyderm?

Regulatory information notes that older adults may require special consideration due to the potential for age-related decreased kidney function. If kidney function is impaired, there is an increased potential for systemic side effects. No general information is universally available to suggest a higher risk for older adults solely based on age, unrelated to kidney health.


Q: Are there any foods or drinks that interact with Polyderm?

Regulatory labels for the topical product generally do not specify any interactions with specific foods or drinks. Due to the topical application route, official documentation does not typically specify systemic food-drug interactions. Official documentation primarily details potential interactions with other medicinal products.


Q: What happens if I miss a scheduled application of Polyderm?

Official guidance for a missed application describes applying the medicine as soon as the user remembers. However, if it is close to the time for the next scheduled application, the guidance describes skipping the missed dose entirely. The instructions explicitly state not to apply a double dose to make up for the missed one.


Q: Is Polyderm available over the counter, or does it require a prescription?

The basic Polyderm formulation containing only the two antibiotics (Bacitracin/Polymyxin B) is widely marketed as an over-the-counter (OTC) drug. However, specific formulations, such as those intended for ophthalmic (eye) use or combination products that include a corticosteroid, typically require a prescription from a healthcare professional.


Q: Do I need to change my habits or lifestyle while using Polyderm?

Official regulatory labeling includes an important flammability warning for products containing petrolatum or paraffin bases. This warning describes the need to keep any materials like clothing or dressings that have come into contact with the ointment away from fire or naked flames due to the severe burn hazard.


Q: Can Polyderm interact with vitamins or herbal supplements?

Regulatory labels primarily focus on documented interactions with other prescription and over-the-counter medicines. Although specific warnings for vitamins or most herbal supplements are not usually listed, official guidance consistently references the need for individuals to inform their healthcare provider about all products being used, including any vitamins or herbal supplements.


Q: If I am taking blood pressure medicine, is it safe to use Polyderm?

The potential for interaction with oral medications, such as blood pressure medicine, is often described as generally low, given the minimal systemic absorption that occurs during the normal topical application of Polyderm. Despite this, regulatory guidance describes the importance of discussing all current medications and health concerns with a healthcare provider.


Q: Can I use other skin products like moisturizers or cosmetics with Polyderm?

Some official product information states that concurrent use of other topical products, such as additional creams, lotions, or cosmetics, should be avoided in the same area where Polyderm is used. This guideline applies unless a healthcare provider provides alternative instructions.


Q: Can Polyderm interact with recreational substances?

Regulatory documents focus on medicinal product interactions. While general advice may include discussing the use of alcohol or tobacco with a healthcare professional, specific interactions with other recreational substances are not detailed in official product labels.


Q: How is the safety of Polyderm monitored after it has been approved for use?

Regulatory agencies continuously monitor the safety profile of the medicine even after it has been approved and marketed. Official documents describe the process where both patients and healthcare providers are asked to report any unexpected or serious adverse events that occur during use, as part of the ongoing surveillance process.


Q: Does the medicine Polyderm contain any common allergens, such as lactose or gluten?

The inactive ingredients in Polyderm typically include a base of white petrolatum and mineral oil. The common allergens lactose and gluten are generally not listed in the standard topical or ophthalmic formulations. However, for specific concerns, the complete list of inactive ingredients for the exact product being used is available for review.


Q: What are the signs that Polyderm is not working for my condition?

Official guidelines describe stopping the use of the product and consulting a healthcare provider if the treated condition persists or gets worse. Furthermore, regulatory documentation references seeking medical attention if there is no sign of improvement after 7 days of treatment.


Q: What if I experience a side effect that is not listed in the official documents?

Official regulatory authorities describe the mechanism for individuals to report any unexpected or unusual side effects that are experienced to the national authority responsible for drug safety (such as the FDA). In all such cases, contacting a healthcare provider for medical guidance is also described.


Q: Are there any documented cases of overdose with Polyderm?

For the topical ointment, an overdose is generally not expected to be dangerous because only a minimal amount is absorbed into the body during normal use. However, if the medication is accidentally swallowed, official safety documents describe the process of immediately seeking medical attention or contacting a Poison Control Center for guidance.

How should Polyderm be stored and disposed of?

How to Store and Dispose of Polyderm?

Polyderm (Bacitracin/Polymyxin B ointment) must be stored strictly according to regulatory specifications to maintain product stability and integrity.

Official Storage Requirements

Condition Requirement
Temperature Store at Controlled Room Temperature, 15°C to 25°C (59°F to 77°F).
Protection Keep from freezing and protect from excessive heat, moisture, and direct light.
Container The container must be kept tightly closed when not in use.
Safety The product must be kept out of the reach of children.

Disposal Instructions

Disposal must adhere to Federal, State, and Local regulations for pharmaceutical waste. Unused or expired medication should be disposed of after the expiration date, and guidance on proper disposal should be sought from a healthcare professional or pharmacist. Outdated medicine should not be kept.

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

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