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Mentax Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 1/3/2016

Mentax (butenafine HCl) is a topical (for the skin) antifungal medication used to treat athlete's foot, jock itch, and ringworm. Common side effects of Mentax include burning, stinging, irritation, redness, or itching at the application site, or worsening of the skin condition.

Patients with tinea (pityriasis) versicolor should apply a dose of Mentax once daily for two weeks. To treat interdigital tinea pedis, apply twice daily for 7 days OR once daily for 4 weeks. To treat tinea corporis or tinea cruris apply once daily for two weeks. Avoid using other topicals at the same time unless your doctor approves. Other skin medications may affect the absorption or effectiveness of Mentax topical. Tell your doctor all medications you use. During pregnancy, Mentax should be used only when prescribed. It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.

Our Mentax (butenafine HCl) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is Patient Information in Detail?

Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.

Mentax in Detail - Patient Information: Side Effects

Serious side effects of butenafine topical use are not expected. Stop using butenafine topical and see your doctor if you experience unusual or severe blistering, itching, redness, peeling, dryness, swelling, or irritation of the skin.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Mentax (Butenafine)

What is Patient Information Overview?

A concise overview of the drug for the patient or caregiver from First DataBank.

Mentax Overview - Patient Information: Side Effects

SIDE EFFECTS: Burning, irritation, redness, or itching at the application site may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

If your doctor has prescribed this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur: blistering/swelling/oozing at the application site.

A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Read the entire patient information overview for Mentax (Butenafine)

What is Prescribing information?

The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.

Mentax FDA Prescribing Information: Side Effects
(Adverse Reactions)


In controlled clinical trials, 9 (approximately 1%) of 815 patients treated with Mentax® (butenafine) Cream, 1%, reported adverse events related to the skin. These included burning/stinging, itching, and worsening of the condition. No patient treated with Mentax® (butenafine) Cream, 1%, discontinued treatment due to an adverse event. In the vehicle-treated patients, two of 718 patients discontinued because of treatment-site adverse events, one of which was severe burning/stinging and itching at the site of application.

In uncontrolled clinical trials, the most frequently reported adverse events in patients treated with Mentax® (butenafine) Cream, 1%, were: contact dermatitis, erythema, irritation, and itching, each occurring in less than 2% of patients.

In provocative testing in over 200 subjects, there was no evidence of allergic contact sensitization for either the cream or the vehicle base for Mentax® (butenafine) Cream, 1%.

Read the entire FDA prescribing information for Mentax (Butenafine)

Mentax - User Reviews

Mentax User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Mentax sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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