What is Penlac?
Penlac (ciclopirox) is a topical antifungal drug used on the nails and nearby skin. It belongs to the antifungal drug class, which means it works by stopping the growth of fungus, a type of germ that can infect nails.
It is applied like nail lacquer and is designed for use directly on affected fingernails or toenails.
The U.S. Food and Drug Administration approves Penlac to treat fungal nail infections, also called onychomycosis, which cause thick, discolored, or brittle nails.
It is usually prescribed to adults with mild to moderate nail infection who can follow daily application and regular nail care.
Patients often compare options when considering the cost of Penlac, especially for long treatment periods.
Indications and Benefits of Penlac
Penlac is used to treat certain types of fungal nail infections.
FDA-approved indications
- Treatment of mild to moderate onychomycosis, a fungal infection of the fingernails or toenails caused by fungi such as Trichophyton rubrum.
- For patients with an infection limited to the nail and not involving the nail root area.
Penlac clinical benefits
- Helps reduce fungus in the nail, leading to clearer nail growth over time.
- Mycological cure rates range from 29 percent to 36 percent in U.S. trials, meaning the fungus is no longer detected.
- Complete cure rates of Penlac are lower, about 5.5 percent to 8.5 percent, but improvement is common with long use.
- Works best with daily use for up to 48 weeks and regular nail care.
- Topical use limits whole body exposure, which may reduce the risk of widespread side effects.
Common off-label uses
- May be used on nearby skin for fungal infections, although this depends on clinical judgment.
Penlac Information Table
| Category | Details |
| Brand Name | Penlac Nail Lacquer |
| Generic Name | ciclopirox topical solution |
| Medication Class | Topical antifungal |
| Primary Use | Mild to moderate fungal infection of fingernails or toenails, also called onychomycosis |
| Additional Uses / Off-Label | Other ciclopirox forms may be used for skin fungal infections, but this nail lacquer is intended for nail use only |
| Available Form | Topical nail lacquer solution |
| Method of Administration | Applied directly to affected nails and nearby skin |
| Available Dosage Strengths | 8% topical solution |
| Dosing Frequency | Once daily, usually at bedtime or at least 8 hours before washing |
| Storage Instructions | Store at room temperature between 59°F and 86°F (15°C to 30°C). Protect from light by keeping it in the carton. Keep away from heat and flame |
| Pregnancy & Breastfeeding | Tell a doctor before use if pregnant or breastfeeding. Safety data in humans is limited |
| Major Drug Interactions | Nail cosmetics, nail polish, repeated use of topical corticosteroids, regular steroid inhalers, and other antifungal nail treatments |
| Manufacturer | Manufactured for Valeant Pharmaceuticals North America LLC, Bridgewater, NJ, USA; manufactured by |
How Does Penlac Work?
Penlac works by stopping the growth of fungus on the nails. Its active ingredient, ciclopirox, binds to certain metals inside fungal cells, such as iron. These metals are needed for the fungus to survive.
By blocking them, Penlac disrupts key processes inside the fungus, which weakens and eventually kills it. In simple terms, it breaks down the fungus’s ability to protect itself and grow, helping clear the infection over time.
Penlac works directly where it is applied, so it stays on the nail and nearby skin instead of spreading through the body. It starts acting after regular use, but visible improvement takes time because nails grow slowly.
Many people may need several months before seeing changes, and full treatment can take up to 48 weeks.
Consistent daily use and proper nail care help improve results and support healthy nail growth.
Penlac Dosage
Penlac is available as a single strength, which is an 8% ciclopirox topical solution. It comes in a nail lacquer form with a brush applicator for direct use on the nails. There are no other strengths for this specific product.
The dosage of Penlac is simple and is based on once-daily application to affected nails as part of a full nail care routine.
What Dosage Strengths Does Penlac Come In?
- Topical nail lacquer solution
- Strength: 8%
Dosage Chart
| Condition | Starting Dose | Maintenance Dose | Maximum Dose |
| Fungal nail infection (onychomycosis) | Apply once daily to affected nails | Continue once daily application | Once daily application only |
Penlac vs. Other Fungal Nail Infection Treatments
| Drug Name | Drug Class | Form | Dosing Frequency | Primary Use | Difference from Penlac |
| Penlac | Topical antifungal | Nail lacquer | Once daily | Mild to moderate fungal nail infection | Applied as a lacquer that builds layers and is removed weekly |
| Jublia | Topical antifungal | Topical solution | Once daily | Toenail fungal infection | Applied as a solution without the weekly removal of layers |
| Loprox | Topical antifungal | Cream, gel, shampoo, solution | Varies by form | Skin and nail fungal infections | Multiple forms for skin and scalp, not limited to nail lacquer use |
| Kerydin | Topical antifungal | Topical solution | Once daily | Toenail fungal infection | Different active ingredients with a thinner solution formula |
| Lamisil | Oral antifungal | Tablet | Once daily | Moderate to severe fungal nail infection | Taken by mouth and works throughout the body |
| Sporanox | Oral antifungal | Capsule | Daily or pulse dosing | Fungal nail infection | Oral treatment with broader body exposure |
Penlac Usage Guide
Using Penlac correctly each day is important for the best results. Follow these steps as part of your daily routine.
How to use Penlac?
- Start by trimming nails and removing any loose or damaged nail material. If you have diabetes or numbness in your fingers or toes, ask a doctor before doing this.
- Make sure nails are clean and dry before applying.
- Use the brush to apply a thin, even layer over the entire nail. If possible, apply under the nail and to the skin beneath it.
- Let it dry for about 30 seconds before putting on socks or gloves.
- Apply a new layer each day over the previous coat.
- Once a week, remove all layers using alcohol, then trim and file the nail again before restarting the process.
Timing and routine
- Apply once daily, preferably at bedtime.
- Wait at least 8 hours before washing the treated area.
- No food or water instructions apply since it is used on the nails.
Important things to avoid
- Do not use nail polish or nail cosmetics on treated nails
- Avoid contact with the eyes and mouth
- Keep away from heat or open flame, as the solution is flammable
How to know it is working?
- You may see healthier nail growth at the base over time
- Discoloration and thickness may slowly improve
- Results take months, so consistent daily use is important
Side Effects
| Common Side Effects | Serious Side Effects |
| Redness around the nail (periungual erythema) | Severe rash or spreading redness |
| Skin-related reactions overall | Blistering, swelling, or oozing at the application site |
| Nail changes such as shape change, discoloration, irritation, or ingrown nail | Signs of allergic reaction, such as severe irritation or localized swelling |
| Application site burning or irritation | |
| Mild skin redness seen in studies under certain conditions |
Penlac Missed Dose
If you miss a dose of Penlac, apply it as soon as you remember on the same day. If it is close to your next scheduled application, skip the missed dose and return to your regular once-daily routine.
Do not apply extra layers to make up for a missed dose. Continue your weekly removal cycle as planned, even if you missed a day.
Storage Information
Store Penlac at room temperature between 59°F and 86°F (15°Cando 30°C) before and after opening. Keep the bottle tightly closed when not in use to prevent drying.
Protect it from light by storing it in its original carton after each use. Keep away from heat and moisture, and do not store it in humid areas like bathrooms. Do not freeze this product.
Penlac does not have a specific shortened use period after opening if stored properly. Do not use expired product. Dispose of it safely according to local pharmacy guidelines.
Warnings
Precautions
- Treatment should be stopped if signs of sensitivity or irritation occur, such as redness, itching, burning, swelling, or blistering at the application site.
- This product is for external use only, and contact with the eyes, mouth, or mucous membranes should be avoided.
- The solution should only be applied to the affected nail and nearby skin, as contact with surrounding healthy skin may cause mild irritation.
- Nail polish or other cosmetic nail products should not be used on treated nails, as they may reduce effectiveness.
- The product is flammable and should be kept away from heat, open flame, or high temperatures.
- It should only be used for the condition it was prescribed for and not for other infections.
- Effective treatment requires daily application along with regular nail care, including removal of the infected nail by a trained professional.
Patients Who Need Extra Caution
- Patients with insulin-dependent diabetes or diabetic neuropathy should use caution, as nail trimming and removal may increase the risk of injury or complications.
- Pregnant patients should use this product only if clearly needed, since there are no well-controlled studies in humans.
- Breastfeeding patients should use caution, as it is not known if the drug passes into human milk.
- Pediatric patients under 12 years should be monitored carefully, as clinical data is limited in this group.
- Older adults may require closer observation, as limited data is available for patients aged 65 and older.
Monitoring Requirements
- Regular follow-up visits are needed for proper nail trimming and removal of infected nail material by a trained professional.
- The treated area should be monitored for signs of irritation or worsening skin reactions during use.
- Long-term use may be required, so progress should be checked over time, as treatment can last up to 48 weeks.
Contraindications
Penlac should not be used in the following situations:
- Known hypersensitivity to ciclopirox or any component of the formula: This product must not be used by anyone who has had an allergic reaction to ciclopirox or any of its ingredients. Using it again may cause skin reactions such as severe irritation, rash, or swelling.
Who Should Not Use Penlac
- Patients with a known allergy to ciclopirox or any inactive ingredients in the product should avoid use completely.
If you are unsure about past reactions, speak with a doctor before starting treatment.
Interactions
There are no formal interaction studies for Penlac, but caution is advised when using it with other antifungal treatments.
It is not recommended to use Penlac at the same time as oral or systemic antifungal drugs for nail infections, as it is not known if this may reduce how well either treatment works.
To avoid reduced effectiveness, use Penlac only as directed and discuss all current treatments with your doctor before combining therapies.
Alternatives
| Drug Name | Generic Name | Drug Class | Difference from Penlac | Best For |
| Jublia | efinaconazole | Topical antifungal | Applied as a liquid solution without a weekly removal cycle | Patients who prefer a simple topical routine |
| Kerydin | tavaborole | Topical antifungal | Uses a different active ingredient with a lighter solution | Patients needing an alternative topical option |
| Lamisil | terbinafine | Oral antifungal | Taken by mouth and works throughout the body | Patients with more extensive nail infection |
| Sporanox | itraconazole | Oral antifungal | Oral treatment with pulse or daily dosing | Patients who need systemic treatment |
| Diflucan | fluconazole | Oral antifungal | Often used off-label for nail infections | Patients who may need alternative oral therapy |
Cost & Coupons
Buy Penlac Online From Canada
The cost of Penlac in the United States can be expensive, which is why many patients choose to order from licensed Canadian pharmacies to save on treatment while still receiving the same quality product.
- Save on the cost of Penlac compared to U.S. retail prices
- Access lower Penlac generic cost options when available
- Sourced from licensed Canadian pharmacies only
- Fast shipping across the United States
- Clear pricing with no hidden fees
- Order up to a 3-month supply to reduce overall Penlac cost
- Verified by U.S. doctors and Canadian pharmacists
- Safe handling and secure packaging
Penlac Discounts and Coupons from Pharma Giant
Use code PGSAVE10 at checkout to receive 10% off your first Penlac order.
How to Order?
| Step 1: Search for your Penlac on the website, choose the correct strength and quantity, then add it to your cart.
Step 2: Enter your contact details, shipping address, and payment information. Create an account if you are a new customer or log in if you already have one. Step 3: If your order includes prescription Penlac, upload it directly to the site, email it, or fax it. Over-the-counter items do not require a prescription. Use PGSAVE10 to claim your 10% discount on your first order. |
Pharma Giant’s Guarantee
Pharma Giant focuses on making treatment more accessible and affordable. All orders are sourced from licensed Canadian pharmacies and reviewed before shipping to ensure safety and accuracy.
You can also order up to a 3-month supply to help manage ongoing treatment costs more effectively.
Frequently Asked Questions
Buying Penlac from Canada
FDA-Prescription, Off-Label Information, and Limitations
Dosage & Administration
Adverse Reactions
Food & Drug Interactions
Storage & Travel
Drug Comparison
Disclaimer
Pharma Giant provides medical information to help you better understand medications and medical conditions.This content is for informational use only and does not replace advice from a licensed medical practitioner. Consult your doctor or pharmacist before starting or changing any medication. All our partners follow strict safety standards set by their country’s health authorities to make sure you receive safe and high-quality medications.
| Have a prescription?
Order Penlac online today and enjoy a host of benefits, including: |
 |
