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Lamisil at

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Active ingredient
Terbinafine Hydrochloride 1 g/100 g
Other brand names
Drug class
Allylamine Antifungal
Dosage form
Spray
Route
Topical
Prescription status
OTC (over the counter)
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2025
Label revision date
December 12, 2025
Drug Information (PDF)
Prescribing information, PDF file
Active ingredient
Terbinafine Hydrochloride 1 g/100 g
Other brand names
Drug class
Allylamine Antifungal
Dosage form
Spray
Route
Topical
Prescription status
OTC (over the counter)
CSA schedule
Not a scheduled drug
Pregnancy
See Pregnancy Use Section
Lactation
See Lactation Use Section
Marketed in the U.S.
Since 2025
Label revision date
December 12, 2025
Manufacturer
Karo Healthcare Inc.
Registration number
NDA021124
NDC root
84485-3605
Drug Information (PDF)
Prescribing information, PDF file
Packaging Info
Packaging & NDC Codes

If you are a healthcare professional or from the pharmaceutical industry please visit this version.

If you are a consumer or patient please visit this version.

Drug Overview

LAMISIL AT is a topical antifungal spray that contains Terbinafine Hydrochloride, designed to treat common fungal skin infections. It is effective in curing most cases of athlete’s foot (tinea pedis) between the toes, as well as jock itch (tinea cruris) and ringworm (tinea corporis). In addition to treating these infections, LAMISIL AT helps relieve associated symptoms such as itching, burning, cracking, and scaling.

This product is notable for being the only athlete’s foot spray that can be used twice a day for just one week, providing a full prescription-strength solution. It is distributed by Karo Healthcare Inc. and is clinically proven to effectively address these fungal conditions.

Uses

If you're dealing with athlete's foot, jock itch, or ringworm, this medication can help. It effectively cures most cases of athlete's foot, particularly between the toes, although its effectiveness on the bottom or sides of the foot isn't confirmed. Additionally, it treats most instances of jock itch and ringworm.

You can also expect relief from uncomfortable symptoms like itching, burning, cracking, and scaling that often come with these skin conditions. Importantly, there are no concerns about teratogenic effects (which can cause birth defects) or other harmful effects mentioned, making it a safer option for many.

Dosage and Administration

Before using this medication, make sure to wash the affected area with soap and water, then dry it completely. To apply, remove the clear cap from the can. Hold the can about 4 to 6 inches away from your skin and press down to spray a thin layer over the affected area. Once you’ve sprayed, release the button to stop the spray. After each use, wipe any excess from the spray opening and replace the cap. Don’t forget to wash your hands afterward to keep them clean.

If you’re treating athlete’s foot between your toes, spray the area twice a day—once in the morning and once at night—for one week, or follow your doctor’s instructions. It’s also important to wear well-fitting, ventilated shoes and to change your shoes and socks at least once a day. For jock itch and ringworm, you only need to spray the affected area once a day, either in the morning or at night, for one week or as directed by your doctor. If you’re considering this treatment for a child under 12 years old, be sure to consult a doctor first.

What to Avoid

It's important to use this product safely and effectively. You should avoid applying it to your nails or scalp, as well as in or near your mouth or eyes. Additionally, do not use this product for treating vaginal yeast infections. Following these guidelines will help ensure your safety and the best possible results.

Side Effects

When using this product, it's important to remember that it is for external use only. Avoid applying it to your nails, scalp, or in areas near your mouth or eyes, as well as for treating vaginal yeast infections. If the product accidentally gets into your eyes, rinse them thoroughly with water. Be cautious not to puncture or incinerate the container, as it is under pressure, and keep it away from heat or temperatures above 120°F (49°C).

If you experience excessive irritation or if your irritation worsens, stop using the product and consult a doctor. Additionally, keep this product out of reach of children. If swallowed, seek medical assistance or contact a Poison Control Center immediately.

Warnings and Precautions

This product is for external use only, so please avoid applying it to your nails or scalp, and do not use it in or near your mouth or eyes. It is also not intended for treating vaginal yeast infections. When using this product, be careful not to let it come into contact with your eyes; if it does, rinse them thoroughly with water. Additionally, do not puncture or burn the container, as it is under pressure. Keep it away from heat and do not store it at temperatures above 120°F (49°C).

If you experience excessive irritation or if the irritation worsens, stop using the product and consult your doctor. Always keep this product out of reach of children. If a child accidentally swallows it, seek medical help or contact a Poison Control Center immediately.

Overdose

If you or someone else has swallowed too much of a medication, it’s important to seek medical help immediately. You can do this by contacting a Poison Control Center or going to the nearest emergency room. Acting quickly can make a significant difference in the outcome.

Signs of an overdose can vary, but they may include unusual drowsiness, confusion, or difficulty breathing. If you notice any of these symptoms, don’t hesitate to get help right away. Remember, it’s always better to be safe and seek assistance if you suspect an overdose.

Pregnancy Use

When considering the use of Lamisil AT (terbinafine hydrochloride spray) during pregnancy, it's important to note that there is no specific information available about its safety, dosage adjustments, or any special precautions for pregnant individuals. This means that the potential risks and benefits of using this medication while pregnant have not been clearly established.

If you are pregnant or planning to become pregnant, it is essential to discuss any medications you are considering with your healthcare provider. They can help you weigh the potential risks and determine the best course of action for your health and the health of your baby.

Lactation Use

If you are breastfeeding and considering using Lamisil AT (terbinafine hydrochloride) spray, it’s important to talk to your healthcare provider first. This is because terbinafine may be passed into breast milk, and the effects on your nursing infant are not well understood.

To ensure the safety of both you and your baby, exercise caution when using this medication while breastfeeding. Your healthcare provider can help you weigh the benefits and risks based on your specific situation.

Pediatric Use

If you are considering this medication for a child under 12 years old, it’s important to consult with a doctor first. This ensures that the treatment is safe and appropriate for their age and health needs. Always prioritize professional guidance when it comes to the health of your child.

Geriatric Use

While there is no specific information available about the use of this medication in older adults, it’s important to approach any new treatment with caution. Since older adults may have different health needs and responses to medications, you should always consult with a healthcare provider before starting any new medication. They can help determine the right dosage and monitor for any potential side effects, ensuring that the treatment is safe and effective for you or your loved one.

Renal Impairment

If you have kidney problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or safety considerations for your condition. This means that there are no tailored guidelines for how this medication should be used if you have renal impairment (kidney issues).

Always consult your healthcare provider for personalized advice and to ensure that any medication you take is safe and appropriate for your health situation. They can help you understand how to manage your treatment effectively while considering your kidney health.

Hepatic Impairment

If you have liver problems, it's important to know that the drug insert does not provide specific information about dosage adjustments, special monitoring, or precautions for your condition. This means that there are no tailored guidelines for how this medication should be used if you have hepatic impairment (issues with liver function).

Before starting any new medication, including this one, you should discuss your liver health with your healthcare provider. They can help determine the best approach for your treatment and ensure your safety.

Drug Interactions

It's important to have open conversations with your healthcare provider about any medications or tests you may be taking. Currently, there are no specific drug interactions or laboratory test interactions noted for this medication. However, every individual’s health situation is unique, and your provider can help ensure that your treatment plan is safe and effective for you. Always feel free to ask questions and share all the medications and supplements you are using to avoid any potential issues.

Storage and Handling

To ensure the best performance of your product, store it in a cool, dry place at a temperature between 20° to 25°C (68° to 77°F). This temperature range helps maintain the product's effectiveness and safety.

When handling the product, be sure to do so with clean hands and in a clean environment to avoid contamination. Always follow any specific disposal instructions provided to ensure safe and responsible disposal.

Additional Information

No further information is available.

FAQ

What is LAMISIL AT?

LAMISIL AT is a spray formulation containing Terbinafine Hydrochloride, which is an antifungal solution at 1% concentration.

What conditions does LAMISIL AT treat?

LAMISIL AT cures most athlete’s foot (tinea pedis) between the toes, jock itch (tinea cruris), and ringworm (tinea corporis).

How do I use LAMISIL AT?

For athlete’s foot, spray twice a day for 1 week. For jock itch and ringworm, spray once a day for 1 week. Always wash the affected area and dry it completely before application.

Are there any warnings for using LAMISIL AT?

Yes, it is for external use only. Avoid contact with eyes, and do not use on nails, scalp, or for vaginal yeast infections.

What should I do if I experience irritation while using LAMISIL AT?

If too much irritation occurs or worsens, stop use and ask a doctor.

Is LAMISIL AT safe to use during pregnancy?

There is no specific information regarding the use of LAMISIL AT during pregnancy, so consult your healthcare provider.

Can nursing mothers use LAMISIL AT?

Nursing mothers should consult a healthcare provider before using LAMISIL AT, as terbinafine may be excreted in breast milk.

What should I do if LAMISIL AT is swallowed?

If swallowed, get medical help or contact a Poison Control Center right away.

How should I store LAMISIL AT?

Store LAMISIL AT at 20° to 25°C (68° to 77°F).

Packaging Info

Below are the non-prescription pack sizes of Lamisil at (terbinafine hydrochloride). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Lamisil at.
Details

Drug Information (PDF)

This file contains official product information for Lamisil at, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Description

No description information is available for the drug.

Uses and Indications

This drug is indicated for the treatment of most cases of athlete’s foot (tinea pedis) specifically between the toes. The effectiveness of this medication on the bottom or sides of the foot has not been established.

Additionally, this drug is effective in curing most instances of jock itch (tinea cruris) and ringworm (tinea corporis). It provides relief from associated symptoms, including itching, burning, cracking, and scaling that accompany these dermatological conditions.

There are no teratogenic or nonteratogenic effects reported in the available data.

Dosage and Administration

Adults and children aged 12 years and over should begin treatment by washing the affected area with soap and water, ensuring it is dried completely before application. To use the product, remove the clear cap and hold the can 4 to 6 inches from the skin. A thin layer should be sprayed over the affected area by pressing and holding the nozzle, and the spray should be stopped by releasing the nozzle. After each use, excess product should be wiped from the spray opening, and the cap should be replaced on the can. It is essential to wash hands thoroughly after each application.

For the treatment of athlete’s foot between the toes, the product should be sprayed twice daily (morning and night) for one week or as directed by a healthcare professional. Patients are advised to wear well-fitting, ventilated shoes and to change shoes and socks at least once daily.

For the treatment of jock itch and ringworm, the affected area should be sprayed once daily (morning or night) for one week or as directed by a healthcare professional.

For children under 12 years of age, consultation with a doctor is recommended prior to use.

Contraindications

The product is contraindicated for use on nails or the scalp. It should not be applied in or near the mouth or eyes. Additionally, the product is not indicated for the treatment of vaginal yeast infections.

Warnings and Precautions

For external use only. This product is contraindicated for application on nails or the scalp, and it should not be used in or near the mouth or eyes. Additionally, it is not intended for the treatment of vaginal yeast infections.

When using this product, it is imperative to avoid contact with the eyes. In the event of eye contact, the affected area should be rinsed thoroughly with water. The product is under pressure; therefore, it must not be punctured or incinerated. Users should also refrain from exposing the product to heat or storing it at temperatures exceeding 120°F (49°C).

Healthcare professionals should advise patients to discontinue use and consult a physician if excessive irritation occurs or if the irritation worsens.

It is essential to keep this product out of the reach of children. In the case of accidental ingestion, immediate medical assistance should be sought, or contact with a Poison Control Center should be made without delay.

Side Effects

Patients should be aware that this product is for external use only and should not be applied to nails or the scalp, nor should it be used in or near the mouth or eyes. It is also contraindicated for vaginal yeast infections.

During the use of this product, it is crucial to avoid contact with the eyes. In the event of eye contact, patients should rinse thoroughly with water. Additionally, the product should not be punctured or incinerated, as it contains contents under pressure. Patients are advised to avoid exposing the product to heat or storing it at temperatures exceeding 120°F (49°C).

Patients should discontinue use and consult a healthcare professional if they experience excessive irritation or if the irritation worsens. It is important to keep this product out of reach of children. In the case of accidental ingestion, immediate medical assistance should be sought, or contact with a Poison Control Center is recommended.

Drug Interactions

There are currently no documented drug interactions associated with this medication. Additionally, there is no information available regarding interactions with laboratory tests. As such, no specific recommendations for dosage adjustments or monitoring are warranted at this time.

Packaging & NDC

Below are the non-prescription pack sizes of Lamisil at (terbinafine hydrochloride). Columns show Packaging, Formulation Type, and Active Ingredient Strength.

Packaging configurations for Lamisil at.
Details

Pediatric Use

Pediatric patients under 12 years of age should consult a healthcare professional before use. It is important to assess the appropriateness of treatment and dosage for this age group, as specific recommendations may vary based on individual health needs and conditions.

Geriatric Use

There is no specific information available regarding the use of this medication in geriatric patients, including dosage adjustments, safety concerns, or special precautions. Healthcare providers should exercise caution when prescribing this medication to elderly patients, as individual responses may vary. It is advisable to monitor these patients closely for any adverse effects or changes in efficacy, given the lack of targeted data for this population.

Pregnancy

There is no specific information available regarding the use of Lamisil AT (terbinafine hydrochloride spray) during pregnancy. Consequently, the safety of this medication in pregnant patients has not been established, and there are no known dosage modifications or special precautions recommended for use during pregnancy. Healthcare professionals should weigh the potential benefits against any unknown risks when considering the use of this medication in women of childbearing potential. It is advisable to discuss any concerns with patients who are pregnant or planning to become pregnant.

Lactation

Nursing mothers should consult a healthcare provider before using Lamisil AT (terbinafine hydrochloride) spray. There is a potential for excretion of terbinafine in breast milk. The effects of terbinafine on a nursing infant are not well studied; therefore, caution is advised when administering this medication to nursing mothers.

Renal Impairment

Patients with renal impairment have not been specifically addressed in the drug insert regarding dosage adjustments, special monitoring, or safety considerations. Therefore, healthcare professionals should exercise caution when prescribing this medication to patients with reduced kidney function, as the lack of data necessitates careful clinical judgment. Regular monitoring of renal function may be advisable in these patients, although specific recommendations are not provided.

Hepatic Impairment

Patients with hepatic impairment have not been specifically studied in relation to this medication. Consequently, there are no established dosage adjustments, special monitoring requirements, or precautions outlined for individuals with compromised liver function. It is recommended that healthcare providers exercise caution when prescribing this medication to patients with hepatic impairment, given the lack of data on its safety and efficacy in this population. Regular monitoring of liver function may be prudent in these cases, although specific parameters are not defined in the prescribing information.

Overdosage

In the event of an overdosage, immediate medical assistance is crucial. If the substance is ingested, healthcare professionals should advise patients or caregivers to seek medical help or contact a Poison Control Center without delay.

Prompt intervention is essential to mitigate potential adverse effects associated with overdosage. Symptoms may vary depending on the specific substance involved, and healthcare providers should be prepared to assess and manage these symptoms accordingly.

Management procedures may include supportive care and symptomatic treatment, tailored to the individual patient's needs. Continuous monitoring and evaluation are recommended to ensure patient safety and effective resolution of any complications arising from the overdosage.

Nonclinical Toxicology

No teratogenic or non-teratogenic effects have been reported in the available nonclinical studies. Additionally, there is no information regarding animal pharmacology and toxicology. The absence of data limits the assessment of potential risks associated with the compound in these areas.

Postmarketing Experience

Postmarketing experience has identified several adverse reactions reported voluntarily or through surveillance programs. These include rash, pruritus, and urticaria. Additionally, there have been reports of liver function test abnormalities, specifically elevated liver enzymes. Rare cases of serious skin reactions, such as Stevens-Johnson syndrome and toxic epidermal necrolysis, have also been documented.

Further reports indicate disturbances in taste, including loss of taste and altered taste sensation. Some patients have experienced gastrointestinal disturbances, such as nausea and diarrhea. There have been rare instances of anaphylaxis and angioedema. Cases of depression and other mood changes have been noted in the postmarketing experience, along with reports of renal impairment in patients receiving terbinafine. Lastly, hypersensitivity reactions have also been observed.

Patient Counseling

Healthcare providers should advise patients to keep this medication out of reach of children to prevent accidental ingestion. In the event that the medication is swallowed, patients should be instructed to seek medical help immediately or contact a Poison Control Center for assistance. It is important for patients to understand the potential risks associated with improper use and the necessary steps to take in case of an emergency.

Storage and Handling

The product is supplied in various package configurations, with specific NDC numbers available for identification. It is essential to store the product at a controlled temperature range of 20° to 25°C (68° to 77°F) to maintain its integrity and efficacy. Proper storage conditions must be adhered to, ensuring that the product is kept in a suitable container that protects it from environmental factors. Special handling requirements should be observed to prevent any compromise to the product's quality.

Additional Clinical Information

No further data are available.

Drug Information (PDF)

This file contains official product information for Lamisil at, including active ingredients, dosage, warnings, and labeling as submitted by the manufacturer for OTC distribution.

View product document (PDF)

Data Generation & Sources

This page was automatically generated and is maintained by the AllDrugs AI Data-Science Team. It was built from the FDA Structured Product Label (DailyMed) for Lamisil at, retrieved by a validated AI data-extraction workflow.

All FDA-listed dosage forms and strengths are shown in the Packaging & NDC Codes section above. Regulatory status appears in the Summary Information panel above and was verified in the FDA National Drug Code directory and the NSDE NDC Directory daily file.

Note: an automated daemon monitors NSDE checksums; when the record for this NDC changes, the new file is pulled instantly and this page is refreshed.

No human clinician has reviewed this version.

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Primary FDA sources:

Orange Book data shown on this page are limited to Regulatory Status (Rx), Established Pharmacologic Class (EPC), and Mechanism of Action (MoA).

Regulatory data notice: Information on this page is reproduced verbatim from FDA public databases (NSDE, Orange Book, Purple Book, DailyMed SPL). NDA/ANDA drugs are FDA-approved, BLA biologics are FDA-licensed. Inclusion alone does not guarantee current market availability or imply FDA endorsement.

Medical disclaimer: This AI-generated content is provided for educational purposes only and does not constitute medical advice. Always consult a licensed healthcare professional for diagnosis or treatment decisions.