Amorolfin ABECE (Amorolfine Nail Lacquer)
Antifungal medicated nail lacquer for treating fungal nail infections (onychomycosis)
Quick Facts About Amorolfin ABECE
Key Takeaways About Amorolfin ABECE
- Once-weekly application: Apply medicated nail lacquer to affected nails once per week for optimal antifungal effect
- Be patient with results: Fingernail infections take about 6 months and toenail infections 9–12 months to fully clear
- No cosmetic nail products: Do not use regular nail polish or artificial nails during treatment as they interfere with the medicine
- Available without prescription: Smaller packs (2.5 mL and 3 mL) are available over-the-counter for mild to moderate infections
- Proper technique matters: File infected nail areas, clean with alcohol, apply lacquer, and let dry for 3 minutes each week
What Is Amorolfin ABECE and What Is It Used For?
Amorolfin ABECE is a medicated nail lacquer containing 5% amorolfine hydrochloride, an antifungal agent from the morpholine class. It is used to treat mild to moderate fungal nail infections (onychomycosis) caused by dermatophytes, yeasts and moulds, provided the infection has not reached the nail growth zone (matrix).
Fungal nail infections, medically known as onychomycosis, are among the most common nail disorders worldwide, affecting an estimated 10% of the general population and up to 50% of people over the age of 70. The condition causes nails to become discoloured, thickened, brittle and sometimes painful. Toenails are affected far more frequently than fingernails, partly because feet are often kept in warm, moist environments inside shoes that create ideal conditions for fungal growth.
Amorolfine works by inhibiting two key enzymes in the ergosterol biosynthesis pathway of fungal cells: delta-14 reductase and delta-7, delta-8 isomerase. Ergosterol is an essential component of fungal cell membranes, much like cholesterol in human cells. By blocking ergosterol production, amorolfine disrupts the structural integrity and function of the fungal cell membrane, ultimately killing the fungus. This dual mechanism of action gives amorolfine a broad spectrum of antifungal activity against dermatophytes (such as Trichophyton species), yeasts (including Candida species) and various moulds.
When applied as a nail lacquer, amorolfine forms a water-resistant film on the nail surface. The drug penetrates through the nail plate to reach the nail bed where the fungal infection resides. Studies have demonstrated that therapeutically effective concentrations of amorolfine persist in the nail for at least seven days after a single application, which is why weekly application is sufficient. The lacquer formulation offers a significant advantage over oral antifungals because it delivers the drug directly to the site of infection with minimal systemic absorption, reducing the risk of systemic side effects.
Amorolfin ABECE is specifically indicated for mild to moderate onychomycosis that does not involve the nail matrix (the growth zone at the base of the nail). If the matrix is affected, the infection is considered severe and typically requires oral antifungal therapy, either alone or in combination with topical treatment. Your healthcare provider can assess the extent of your infection and recommend the most appropriate treatment approach.
How effective is amorolfine nail lacquer?
Clinical studies have shown that amorolfine 5% nail lacquer applied once weekly achieves mycological cure rates (laboratory-confirmed elimination of the fungus) of approximately 60–76% after 6 months for fingernail infections and after 12 months for toenail infections. Complete cure rates, which include both mycological cure and full restoration of normal nail appearance, are somewhat lower because the damaged nail takes time to grow out completely. Combination therapy with oral antifungals (such as terbinafine or itraconazole) may improve outcomes for more extensive infections. A Cochrane systematic review confirmed that topical amorolfine is effective for treating onychomycosis, particularly in cases of limited nail involvement.
What Should You Know Before Using Amorolfin ABECE?
Before using Amorolfin ABECE, check that you are not allergic to amorolfine or any other ingredient. Avoid contact with eyes, ears and mucous membranes. Do not use cosmetic nail polish or artificial nails during treatment. The product is not recommended for children under 18 or during pregnancy and breastfeeding without medical advice.
Although amorolfine nail lacquer is available without a prescription in many countries and is generally considered safe for self-treatment, there are several important precautions you should be aware of before starting treatment. Understanding these precautions will help you use the product safely and effectively, and will also help you recognise situations where you should seek professional medical advice instead of self-treating.
Contraindications
Do not use Amorolfin ABECE if you are allergic (hypersensitive) to amorolfine hydrochloride or any of the other ingredients in the product, including ethanol, ammonium methacrylate copolymer (type A), ethyl acetate, butyl acetate and triacetin. If you have previously experienced an allergic reaction to any amorolfine-containing product, you must not use this medicine. Signs of an allergic reaction may include skin rash, itching, redness, swelling, or in rare cases more severe symptoms such as difficulty breathing or facial swelling.
Warnings and Precautions
- External use on nails only: Amorolfin ABECE is designed exclusively for application on the nails. Avoid contact with the eyes, ears and mucous membranes (such as the mouth, nose and genital area). If accidental contact occurs, rinse immediately with water.
- Nail file hygiene: Nail files that have been used on infected nails must never be used on healthy nails, as this can spread the fungal infection. Each infected nail should ideally be filed with the same file, and files from the treatment pack should not be shared with other people.
- Solvent exposure: If you work with organic solvents (such as paint thinner, white spirit, or similar chemicals), wear protective gloves to prevent the solvents from dissolving the medicated lacquer on your nails.
- Cosmetic nail products: Do not use regular nail polish or artificial nails on the treated nails during the entire course of treatment. These products can form a barrier that prevents the medicated lacquer from penetrating the nail effectively.
- Flammability: The product contains ethanol and is flammable. Do not use near heat sources or open flames. Allow the lacquer to dry fully before exposing treated nails to any heat source.
- You experience difficulty breathing after applying the product
- Your face, lips, tongue or throat swell
- You develop a severe skin rash or hives
These may be signs of a serious allergic reaction. Stop using the product immediately, remove it with nail polish remover or the provided cleaning swabs, and seek emergency medical help.
Pregnancy and Breastfeeding
There is limited clinical data on the use of amorolfine during pregnancy and breastfeeding. Although systemic absorption from topical nail application is minimal, the European Medicines Agency (EMA) advises that amorolfine nail lacquer should only be used during pregnancy and breastfeeding if the treating physician considers it necessary. If you are pregnant, planning to become pregnant, or breastfeeding, consult a healthcare provider before starting treatment. In most cases, treatment of a fungal nail infection can safely be postponed until after pregnancy and breastfeeding.
Children and Adolescents
Amorolfin ABECE is not recommended for children and adolescents under 18 years of age due to a lack of clinical data in this population. Fungal nail infections are relatively uncommon in children. If you suspect that a child has a fungal nail infection, consult a healthcare provider for diagnosis and appropriate treatment options.
Effects on Driving and Using Machines
Amorolfin ABECE has no effect on the ability to drive or operate machinery. As a topical treatment applied only to the nails, it does not cause drowsiness, dizziness, or any other effects that could impair your ability to perform these activities safely.
How Does Amorolfin ABECE Interact with Other Drugs?
No drug interactions have been identified with amorolfine nail lacquer. Because the medication is applied topically to the nails and has negligible systemic absorption, it is unlikely to interact with other medicines you may be taking orally or by injection.
One of the significant advantages of amorolfine nail lacquer over oral antifungal medications is its excellent safety profile regarding drug interactions. Oral antifungals such as itraconazole and ketoconazole are known to interact with a wide range of medications because they are metabolised by cytochrome P450 enzymes in the liver. In contrast, amorolfine nail lacquer acts locally on the nail with minimal systemic absorption, meaning that the amount of drug reaching the bloodstream is negligible.
Formal drug interaction studies have not been conducted for amorolfine nail lacquer specifically because the topical route of administration makes clinically significant interactions extremely unlikely. However, you should always inform your healthcare provider or pharmacist about all medicines you are currently using, have recently used, or plan to use, including prescription medicines, over-the-counter products and herbal remedies.
In some cases, healthcare providers may prescribe oral antifungal medication (such as terbinafine or itraconazole) alongside amorolfine nail lacquer for more severe or resistant infections. This combination approach is well-studied and can improve treatment outcomes. The topical and oral medications work through different routes and complement each other without adverse interactions.
| Feature | Amorolfine Nail Lacquer | Oral Antifungals (e.g., Itraconazole) |
|---|---|---|
| Systemic absorption | Negligible | Significant |
| Known drug interactions | None identified | Multiple (CYP3A4 inhibition) |
| Liver metabolism | Not applicable | Extensive hepatic metabolism |
| Safe with other medications | Yes | Requires careful review |
| Liver function monitoring | Not required | Recommended |
What Is the Correct Dosage of Amorolfin ABECE?
Apply Amorolfin ABECE nail lacquer to affected nails once per week. File the infected nail areas, clean with an alcohol swab, apply the lacquer evenly, and let dry for 3 minutes. Continue treatment for 6 months (fingernails) or 9–12 months (toenails) until the infection has fully cleared.
Consistent and correct application is essential for successful treatment of fungal nail infections with amorolfine. The once-weekly application schedule is based on pharmacokinetic studies showing that therapeutic drug concentrations persist in the nail plate for at least seven days after application. Applying more frequently than recommended does not improve outcomes and may increase the risk of local side effects.
Adults (over 18 years)
Standard Dosing
Frequency: Once weekly
Duration: 6 months for fingernails; 9–12 months for toenails
Application: Apply evenly over the entire surface of each affected nail
Step-by-Step Application Instructions
- File the nail: Using the nail file provided in the pack, file down the infected areas of the nail, including the nail surface, as much as possible. This step is crucial because it removes damaged nail material and allows the lacquer to penetrate more effectively. Warning: Never use nail files from infected nails on healthy nails to prevent spreading the infection. Do not share the files with anyone else.
- Clean the nail: Use one of the provided alcohol-soaked cleaning swabs to thoroughly clean the nail surface. Repeat filing and cleaning for each affected nail.
- Apply the lacquer: Dip one of the reusable applicators into the bottle of nail lacquer. Do not wipe off excess lacquer against the rim of the bottle before applying. Apply the lacquer evenly over the entire surface of the affected nail.
- Let it dry: Allow the treated nails to dry for approximately 3 minutes. During this time, avoid touching the lacquered surface.
- Clean the applicator: After each treatment session, clean the applicator thoroughly using the same alcohol swab you used to clean the nail. Avoid touching the freshly treated nails with the swab. Close the bottle tightly after use. Dispose of the swab safely as it is flammable.
Before applying Amorolfin ABECE the following week, first remove the old lacquer with an alcohol swab, then file the nails again if needed. Apply fresh lacquer following the same steps described above. Once the lacquer has dried, it is not affected by soap and water, so you can wash your hands and feet normally.
Children
Amorolfin ABECE is not recommended for use in children and adolescents under 18 years of age due to insufficient clinical data. If a child presents with a suspected fungal nail infection, a healthcare provider should be consulted for appropriate diagnosis and alternative treatment options.
Elderly
No dose adjustment is required for elderly patients. The same once-weekly application schedule applies. However, elderly patients may need assistance with the application process, particularly for toenails, due to reduced mobility or dexterity. Nail growth is typically slower in older adults, so treatment duration may be longer than average.
Missed Dose
If you forget to apply the lacquer on your usual day, apply it as soon as you remember and then continue with your regular weekly schedule. Do not apply a double dose to make up for a missed application. Maintaining a consistent schedule is important for treatment success, so consider setting a weekly reminder on your phone or calendar.
Overdose
Because amorolfine nail lacquer is applied topically to the nails, overdose in the traditional sense is very unlikely. If the product is accidentally swallowed, contact a poison control centre or seek medical attention immediately. If the lacquer gets into the eyes or ears, rinse immediately with plenty of water and contact a healthcare provider if irritation persists.
Duration of Treatment
Treating a fungal nail infection requires patience and persistence. You should continue using Amorolfin ABECE every week until the infection has completely cleared and a healthy nail has grown out. The typical treatment duration is:
| Nail Type | Typical Duration | Growth Rate | Notes |
|---|---|---|---|
| Fingernails | Approximately 6 months | 3–4 mm per month | Faster growth leads to quicker resolution |
| Toenails | 9–12 months | 1–2 mm per month | Big toenails may take even longer |
| Elderly patients | 12–18 months | Slower than average | Reduced nail growth rate with age |
Do not stop treatment early even if you see improvement. Discontinuing treatment before the infection is fully resolved can allow the fungus to regrow, resulting in relapse and the need to restart the entire treatment course.
What Are the Side Effects of Amorolfin ABECE?
Side effects from amorolfine nail lacquer are uncommon and mainly local. Rare effects include nail discolouration, brittleness or nail separation. Very rarely, a burning sensation may occur. Unknown frequency side effects include skin redness, itching and contact dermatitis around the nail.
Amorolfine nail lacquer is generally very well tolerated due to its topical application and minimal systemic absorption. Most people use the product without experiencing any side effects. When side effects do occur, they are typically mild, localised to the nail and surrounding skin, and resolve when treatment is stopped. The overall side effect profile of amorolfine is considerably more favourable than that of oral antifungal medications, which can cause liver toxicity, gastrointestinal disturbances and drug interactions.
The following side effects have been reported with amorolfine nail lacquer, categorised by their frequency of occurrence according to the standard medical classification:
Rare
Affects 1 to 10 in 10,000 users
- Nail discolouration (yellowish or whitish changes)
- Brittle nails or increased nail fragility
- Nail loosening or separation from the nail bed (onycholysis)
Very Rare
Affects fewer than 1 in 10,000 users
- Burning sensation in the skin around the nail
Frequency Not Known
Cannot be estimated from available data
- Skin redness (erythema) around the treated nail
- Itching (pruritus) in the nail area
- Contact dermatitis or eczema around the nail
- Urticaria (hives)
- Blistering or vesicular eruption
Most local side effects are mild and do not require you to stop treatment. However, you should stop using Amorolfin ABECE and consult a healthcare provider if you experience signs of an allergic reaction (widespread rash, facial swelling, breathing difficulties), severe skin irritation that worsens despite continued use, or significant nail damage such as complete nail separation from the nail bed. If you develop any unexpected symptoms, seek medical advice.
Reporting Side Effects
If you experience any side effects, including ones not listed here, you can help improve drug safety by reporting them. In the UK, report to the MHRA Yellow Card Scheme. In the EU, report to your national medicines agency. In the US, report to the FDA MedWatch programme. Reporting helps regulatory authorities continuously monitor the benefit-risk balance of medicines.
How Should You Store Amorolfin ABECE?
Store Amorolfin ABECE in a safe place out of the sight and reach of children. Keep the bottle tightly closed when not in use. Do not use after the expiry date printed on the packaging. The product is flammable – keep away from heat and open flames.
Proper storage of Amorolfin ABECE ensures that the medication remains effective throughout the course of treatment, which can last up to 12 months or longer. Incorrect storage may cause the lacquer to thicken, dry out or lose its antifungal potency.
- Keep out of reach of children: Store the product in a secure location where children cannot access it. The bottle contains ethanol and other organic solvents that could be harmful if ingested.
- Close tightly after each use: Always ensure the bottle cap is securely closed after application. Exposure to air can cause the lacquer to thicken and become difficult to apply evenly.
- Check expiry date: Do not use the product after the expiry date (marked “EXP” on the bottle and packaging). The expiry date refers to the last day of the month indicated.
- Fire safety: The product is flammable due to its ethanol content (482.3 mg alcohol per mL). Keep away from heat sources, sparks and open flames. Allow the lacquer to dry completely before exposure to any ignition source.
- Disposal: Do not dispose of medicines via wastewater or household waste. Return unused or expired products to a pharmacy for safe disposal.
What Does Amorolfin ABECE Contain?
Each millilitre of Amorolfin ABECE nail lacquer contains 50 mg of amorolfine (as amorolfine hydrochloride), equivalent to a 5% concentration. Inactive ingredients include anhydrous ethanol, ammonium methacrylate copolymer (type A), ethyl acetate, butyl acetate and triacetin.
Active Ingredient
The active ingredient is amorolfine, present as amorolfine hydrochloride. Each millilitre of nail lacquer contains amorolfine hydrochloride equivalent to 50 mg of amorolfine (5%). Amorolfine is a morpholine derivative with broad-spectrum antifungal activity. It acts by inhibiting two enzymes (delta-14 reductase and delta-7, delta-8 isomerase) in the ergosterol biosynthesis pathway, which is essential for the integrity of fungal cell membranes.
Inactive Ingredients (Excipients)
The inactive ingredients serve as the vehicle and film-forming components of the nail lacquer:
- Anhydrous ethanol: Acts as the primary solvent, enabling the drug to be applied as a liquid that then forms a film as the ethanol evaporates. Contains 482.3 mg of alcohol per mL. May cause a brief burning sensation on damaged skin.
- Ammonium methacrylate copolymer (type A): A film-forming polymer that creates a durable, water-resistant coating on the nail surface, ensuring sustained drug release over the week between applications.
- Ethyl acetate: An organic solvent that aids in dissolving the polymer and active ingredient, contributing to the lacquer’s smooth application properties.
- Butyl acetate: Another organic solvent that helps achieve the desired consistency and drying characteristics of the lacquer.
- Triacetin: A plasticiser that prevents the dried film from becoming too rigid and cracking, ensuring it remains flexible on the nail surface.
Product Description
Amorolfin ABECE is a clear, transparent nail lacquer supplied in a glass bottle with an HDPE cap sealed with a PTFE (Teflon) liner. The pack contains either 2.5 mL or 3 mL of lacquer (over-the-counter packs) or 5 mL (prescription packs in some countries). Each pack also includes 30 nail files, 10 plastic spatulas and 30 cleaning swabs (impregnated with 70% isopropyl alcohol).
Frequently Asked Questions About Amorolfin ABECE
Amorolfine nail lacquer requires consistent weekly application for several months. Fingernail infections typically clear in about 6 months, while toenail infections may take 9 to 12 months. Visible improvement depends on how fast the healthy nail grows out to replace the infected area. You may start noticing clearer nail growth from the base within the first few weeks, but it takes time for the entire infected portion to grow out. Patience and continued treatment are essential for a full cure.
No, you should not use cosmetic nail polish or artificial (acrylic or gel) nails during treatment with amorolfine nail lacquer. Cosmetic products create a barrier on the nail surface that interferes with the medicated lacquer’s ability to penetrate the nail plate and reach the fungal infection beneath. Using nail polish also makes it more difficult to assess whether the infection is clearing. Wait until your treatment is fully completed and the infection has resolved before resuming cosmetic nail products.
Yes, amorolfine 5% nail lacquer is available over-the-counter (OTC) in many countries, particularly in Europe, in smaller pack sizes (typically 2.5 mL and 3 mL). Larger pack sizes (5 mL) may require a prescription in some jurisdictions. Amorolfine is not currently approved by the US FDA and is therefore not available over-the-counter in the United States, where ciclopirox nail lacquer is the primary topical option. It is suitable for self-treatment of mild to moderate nail fungus that does not involve the nail growth zone. Consult a pharmacist or doctor if you are unsure whether self-treatment is appropriate for your condition.
If you miss a weekly application, apply the lacquer as soon as you remember and then resume your regular weekly schedule. Do not apply a double dose or apply more frequently to catch up. Consistency is important for maintaining effective drug levels in the nail. Consider setting a weekly alarm or reminder to help you stay on schedule. Occasional missed doses are unlikely to significantly affect overall treatment outcomes, but repeated missed applications may reduce effectiveness.
Amorolfine nail lacquer is not recommended for children and adolescents under 18 years of age because there is insufficient clinical data to establish its safety and efficacy in this age group. Fungal nail infections are relatively uncommon in children compared to adults. If a child has a suspected nail fungus infection, consult a paediatrician or dermatologist who can provide an accurate diagnosis and recommend appropriate treatment options tailored to the child’s age and condition.
Signs that treatment is working include: new, healthy-looking nail growing from the base (cuticle area) of the nail, a gradual reduction in discolouration and thickening of the nail, and the nail becoming less brittle and crumbly over time. Improvement is gradual because you must wait for the entire infected portion of the nail to grow out and be replaced by healthy nail. Take progress photographs monthly to track improvements that might be too subtle to notice day-to-day. If you see no improvement after 3 months of consistent use, consult a healthcare provider for reassessment.
References
- European Medicines Agency (EMA). Amorolfine – Summary of Product Characteristics. European Public Assessment Reports. Available at: www.ema.europa.eu
- Gupta AK, Stec N, Summerbell RC, Shear NH, Piguet V, Tosti A, Piraccini BM. Onychomycosis: a review. Journal of the European Academy of Dermatology and Venereology. 2020;34(9):1972–1990. doi:10.1111/jdv.16394
- Cochrane Database of Systematic Reviews. Topical and device-based treatments for fungal infections of the toenails. 2020. doi:10.1002/14651858.CD012093.pub2
- British National Formulary (BNF). Amorolfine. NICE. Available at: bnf.nice.org.uk
- World Health Organization (WHO). WHO Model List of Essential Medicines – 23rd List, 2023. Geneva: WHO; 2023.
- Hay RJ, Baran R. Onychomycosis: a proposed revision of the clinical classification. Journal of the American Academy of Dermatology. 2011;65(6):1219–1227. doi:10.1016/j.jaad.2010.09.730
- Gupta AK, Versteeg SG, Shear NH. Onychomycosis in the 21st century: an update on diagnosis, epidemiology and treatment. Journal of Cutaneous Medicine and Surgery. 2017;21(6):525–539. doi:10.1177/1203475417716362
- Lauharanta J. Comparative efficacy and safety of amorolfine nail lacquer 2% vs 5% once weekly. Clinical and Experimental Dermatology. 1992;17 Suppl 1:41–43.
- Reinel D, Clarke C. Comparative efficacy of topical treatments for onychomycosis. Annals of Dermatology. 2013;25(3):279–284.
- British Association of Dermatologists (BAD). Patient Information Leaflet: Fungal Nail Infection. 2023. Available at: www.bad.org.uk
About the Medical Editorial Team
This article has been written and reviewed by the iMedic Medical Editorial Team, comprising licensed specialist physicians in dermatology and clinical pharmacology with extensive experience in treating fungal infections and topical drug therapy.
Board-certified dermatologists and clinical pharmacologists who review all medicine articles according to EMA, FDA and WHO guidelines. All reviewers declare no conflicts of interest.
All content is based on peer-reviewed research, regulatory authority documentation (EMA SmPC, BNF) and international clinical guidelines. Evidence graded using the GRADE framework.