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Kuric (ketoconazole): Side Effects, Uses, Dosage, Interactions, Warnings

Kuric

Medical Editor: John P. Cunha, DO, FACOEP Last updated on RxList: 3/28/2022

Drug Summary

What Is Kuric?

Kuric (ketoconazole) 2% cream is an antifungal drug indicated for the topical treatment of ringworm (tinea corporis), jock itch (tinea cruris), athlete's foot (tinea pedis), candidiasis (yeast), and seborrheic dermatitis. Kuric is available in generic form.

What Are Side Effects of Kuric?

Side effects of Kuric include severe irritation, itching, and stinging. Serious side effects of Kuric include:

  • rash
  • shortness of breath, and
  • swelling and redness at site of application

Dosage for Kuric

Kuric is available as a 2% strength cream in a 75 g tube. It is recommended that Kuric be applied once daily to cover the affected and immediate surrounding area. Improvement may be seen fairly soon after treatment is begun; however, candidal (yeast) infections, jock itch, and ringworm should be treated for two weeks in order to reduce the possibility of recurrence. Patients with tinea versicolor usually require two weeks of treatment. Patients with athlete's foot require six weeks of treatment.

What Drugs, Substances, or Supplements Interact with Kuric?

Kuric may interact with other drugs. Tell your doctor all medications and supplements you use.

Kuric During Pregnancy and Breastfeeding

Kuric should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is not known whether Kuric cream administered topically could result in detectable quantities in breast milk. Nevertheless, a decision should be made whether to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother. Safety and effectiveness in pediatric patients has not been established.

Additional Information

Our Kuric Cream Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

For external use only

Description for Kuric

Kuric™ (ketoconazole) 2% cream, for topical administration only, contains the broad-spectrum synthetic antifungal agent, ketoconazole 2% cream, formulated in an aqueous cream vehicle consisting of propylene glycol, stearyl and cetyl alcohols, sorbitan monostearate, polysorbate 60, isopropyl myristate, sodium sulfite anhydrous, polysorbate 80 and purified water. Ketoconazole is cis-1-acetyl-4-[4-[[2-(2,4-dichlorophenyl)-2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]piperazine and has the following structural formula:

Kuric™ 
  (ketoconazole) Structural Formula Illustration

Uses for Kuric

Kuric™ is indicated for the topical treatment of tinea corporis, tinea cruris and tinea pedis caused by Trichophyton rubrum, T. mentagrophytes and Epidermophyton floccosum; in the treatment of tinea (pityriasis) versicolor caused by Malassezia furfur (Pityrosporum orbiculare); in the treatment of cutaneous candidiasis caused by Candida spp. and in the treatment of seborrheic dermatitis.

Dosage for Kuric

Cutaneous candidiasis, tinea corporis, tinea cruris, tinea pedis and tinea (pityriasis) versicolor: It is recommended that Kuric™ be applied once daily to cover the affected and immediate surrounding area. Clinical improvement may be seen fairly soon after treatment is begun; however, candidal infections and tinea cruris and corporis should be treated for two weeks in order to reduce the possibility of recurrence. Patients with tinea versicolor usually require two weeks of treatment. Patients with tinea pedis require six weeks of treatment.

Seborrheic dermatitis: Kuric™ should be applied to the affected area twice daily for four weeks or until clinical clearing.

If a patient shows no clinical improvement after the treatment period, the diagnosis should be redetermined.

HOW SUPPLIED

Kuric™ (ketoconazole) 2% cream is supplied as follows: 75 gram NDC 68712 006 03 Store below 77°F (25°C).

Manufactured for: JSJ Pharmaceuticals, 140 East Bay Street, Suite C, Charleston, SC 29401. www.jsjpharm.com, www.KuricCream.com. Manufactured by: Altana Inc. Melville, NY 11747. Revised: April 2007

Side Effects for Kuric

During clinical trials 45 (5.0%) of 905 patients treated with Ketoconazole Cream 2% and 5 (2.4%) of 208 patients treated with placebo reported side effects consisting mainly of severe irritation, pruritus and stinging. One of the patients treated with Ketoconazole Cream developed a painful allergic reaction.

In worldwide postmarketing experience, rare reports of contact dermatitis have been associated with Ketoconazole Cream or one of its excipients, namely sodium sulfite or propylene glycol.

Drug Interactions for Kuric

No information provided.

Warnings for Kuric

Kuric™ is not for ophthalmic use.

Kuric™ contains sodium sulfite anhydrous, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.

Precautions for Kuric

General

If a reaction suggesting sensitivity or chemical irritation should occur, use of the medication should be discontinued. Hepatitis (1:10,000 reported incidence) and, at high doses, lowered testosterone and ACTH induced corticosteroid serum levels have been seen with orally administered ketoconazole; these effects have not been seen with topical ketoconazole.

Carcinogenesis, Mutagenesis, Impairment of Fertility

A long-term feeding study in Swiss Albino mice and in Wistar rats showed no evidence of oncogenic activity. The dominant lethal mutation test in male and female mice revealed that single oral doses of ketoconazole as high as 80 mg/kg produced no mutation in any stage of germ cell development. The Ames' Salmonella microsomal activator assay was also negative.

Pregnancy

Teratogenic effects

Pregnancy Category C:Ketoconazole has been shown to be teratogenic (syndactylia and oligodactylia) in the rat when given orally in the diet at 80 mg/kg/day, (10 times the maximum recommended human oral dose). However, these effects may be related to maternal toxicity, which was seen at this and higher dose levels. There are no adequate and well-controlled studies in pregnant women. Ketoconazole should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Nursing Mothers

It is not known whether Kuric™ (ketoconazole) 2% cream administered topically could result in sufficient systemic absorption to produce detectable quantities in breast milk. Nevertheless, a decision should be made whether to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother.

Pediatric Use

Safety and effectiveness in children have not been established.

Overdose Information for Kuric

No information provided.

Contraindications for Kuric

Kuric™ is contraindicated in persons who have shown hypersensitivity to the active or excipient ingredients of this formulation.

Clinical Pharmacology for Kuric

When Ketoconazole Cream 2% was applied dermally to intact or abraded skin of Beagle dogs for 28 consecutive days at a dose of 80 mg, there were no detectable plasma levels using an assay method having a lower detection limit of 2 ng/ml.

After a single topical application to the chest, back and arms of normal volunteers, systemic absorption of ketoconazole was not detected at the 5 ng/ml level in blood over a 72-hour period.

Two dermal irritancy studies, a human sensitization test, a phototoxicity study and a photoallergy study conducted in 38 male and 62 female volunteers showed no contact sensitization of the delayed hypersensitivity type, no irritation, no phototoxicity and no photoallergenic potential due to Ketoconazole Cream 2%.

Microbiology

Ketoconazole is a broad spectrum synthetic antifungal agent which inhibits the in vitro growth of the following common dermatophytes and yeasts by altering the permeability of the cell membrane: dermatophytes: Trichophyton rubrum, T. mentagrophytes, T. tonsurans, Microsporum canis, M. audouini, M. gypseum and Epidermophyton floccosum; yeasts: Candida albicans, Malassezia ovate (Pityrosporum ovale) and C. tropicalis; and the organism responsible for tinea versicolor, Malassezia furfur (Pityrosporum orbiculare). Only those organisms listed in the INDICATIONS Section have been proven to be clinically affected. Development of resistance to ketoconazole has not been reported.

Mode of Action

In vitro studies suggest that ketoconazole impairs the synthesis of ergosterol, which is a vital component of fungal cell membranes. It is postulated that the therapeutic effect of ketoconazole in seborrheic dermatitis is due to the reduction of M. ovale, but this has not yet been proven.

Patient Information for Kuric

No information provided. Please refer to the WARNINGS and PRECAUTIONS sections.

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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.