Medical Editor: John P. Cunha, DO, FACOEP Last updated on RxList: 6/6/2022
Drug Description

What is Oxistat and how is it used?

Oxistat (oxiconazole) Cream and Lotion is a topical (for the skin) antifungal medication used to treat skin infections such as athlete's foot, jock itch, and ringworm. Serious side effects of Oxistat are not expected.

What are side effects of Oxistat?

Common side effects of Oxistat include:

  • burning,
  • stinging,
  • swelling,
  • irritation,
  • redness,
  • pimple-like bumps,
  • tenderness, or
  • flaking of the treated skin


OXISTAT® (oxiconazole nitrate) Cream, 1% and OXISTAT® (oxiconazole nitrate) Lotion, 1% formulations contain the antifungal active compound oxiconazole nitrate. Both formulations are for topical dermatologic use only.

Chemically, oxiconazole nitrate is 2',4'-dichloro-2-imidazol-1-ylacetophenone (Z)-[0-(2,4- dichlorobenzyl)oxime], mononitrate. The compound has the molecular formula C18H13ON3CI4 •HNO`, a molecular weight of 492.15, and the following structural formula:

OXISTAT® (oxiconazole nitrate) Structural Formula - Illustration

Oxiconazole nitrate is a nearly white crystalline powder, soluble in methanol; sparingly soluble in ethanol, chloroform, and acetone; and very slightly soluble in water.

OXISTAT® Cream contains 10 mg of oxiconazole per gram of cream in a white to off-white, opaque cream base of purified water USP, white petrolatum USP, stearyl alcohol NF, propylene glycol USP, polysorbate 60 NF, cetyl alcohol NF, and benzoic acid USP 0.2% as a preservative.

OXISTAT® Lotion contains 10 mg of oxiconazole per gram of lotion in a white to off-white, opaque lotion base of purified water USP, white petrolatum USP, stearyl alcohol NF, propylene glycol USP, polysorbate 60 NF, cetyl alcohol NF, and benzoic acid USP 0.2% as a preservative.

Indications & Dosage

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OXISTAT® Cream and Lotion are indicated for the topical treatment of the following dermal infections: tinea pedis, tinea cruris, and tinea corporis due to Trichophyton rubrum, Trichophyton mentagrophytes, or Epidermophyton floccosum. OXISTAT Cream is indicated for the topical treatment of tinea (pityriasis) versicolor due to Malassezia furfur (see DOSAGE AND ADMINISTRATION and Clinical Studies).

OXISTAT® Cream may be used in pediatric patients for tinea corporis, tinea cruris, tinea pedis, and tinea (pityriasis) versicolor; however, these indications for which OXISTAT Cream has been shown to be effective rarely occur in children below the age of 12.


OXISTAT® Cream or Lotion should be applied to affected and immediately surrounding areas once to twice daily in patients with tinea pedis, tinea corporis, or tinea cruris. OXISTAT® Cream should be applied once daily in the treatment of tinea (pityriasis) versicolor. Tinea corporis, tinea cruris, and tinea (pityriasis) versicolor should be treated for 2 weeks and tinea pedis for 1 month to reduce the possibility of recurrence. If a patient shows no clinical improvement after the treatment period, the diagnosis should be reviewed.

Note: Tinea (pityriasis) versicolor may give rise to hyperpigmented or hypopigmented patches on the trunk that may extend to the neck, arms, and upper thighs. Treatment of the infection may not immediately result in restoration of pigment to the affected sites. Normalization of pigment following successful therapy is variable and may take months, depending on individual skin type and incidental sun exposure. Although tinea (pityriasis) versicolor is not contagious, it may recur because the organism that causes the disease is part of the normal skin flora.


OXISTAT® (oxiconazole nitrate) Cream, 1% is supplied in:

30-g tubes (NDC 10337-358-30),
60-g tubes (NDC 10337-358-60), and
90-g tubes (NDC 10337-358-90).

Store between 15° and 30° C (59° and 86° F).

OXISTAT® (oxiconazole nitrate) Lotion, 1% is supplied in:

30-mL bottle (NDC 10337-359-30)
60-mL bottle (NDC 10337-359-60).

Store between 15° and 30° C (59° and 86° F).

Shake well before using.

PharmaDerm, A division of Fougera Pharmaceuticals Inc., Melville, NY 11747 USA. Revised: Jun 2016


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Side Effects & Drug Interactions


During clinical trials, of 955 patients treated with oxiconazole nitrate cream, 1%, 41 (4.3%) reported adverse reactions thought to be related to drug therapy. These reactions included pruritus (1.6%); burning (1.4%); irritation and allergic contact dermatitis (0.4% each); folliculitis (0.3%); erythema (0.2%); and papules, fissure, maceration, rash, stinging, and nodules (0.1% each).

In a controlled, multicenter clinical trial of 269 patients treated with oxiconazole nitrate lotion, 1%, 7 (2.6%) reported adverse reactions thought to be related to drug therapy. These reactions included burning and stinging (0.7% each) and pruritus, scaling, tingling, pain, and dyshidrotic eczema (0.4% each).


Potential drug interactions between OXISTAT and other drugs have not been systematically evaluated.

Warnings & Precautions


OXISTAT® (oxiconazole nitrate) Cream, 1% and OXISTAT (oxiconazole nitrate) Lotion, 1% are not for ophthalmic or intravaginal use.



OXISTAT® Cream and Lotion are for external dermal use only. Avoid introduction of OXISTAT Cream or Lotion into the eyes or vagina. If a reaction suggesting sensitivity or chemical irritation should occur with the use of OXISTAT Cream or Lotion, treatment should be discontinued and appropriate therapy instituted. If signs of epidermal irritation should occur, the drug should be discontinued.

Nonclinical Toxicology

Carcinogenesis, Mutagenesis, Impairment Of Fertility

Although no long-term studies in animals have been performed to evaluate carcinogenic potential, no evidence of mutagenic effect was found in 2 mutation assays (Ames test and Chinese hamster V79 in vitro cell mutation assay) or in 2 cytogenetic assays (human peripheral blood lymphocyte in vitro chromosome aberration assay and in vivo micronucleus assay in mice).

Reproductive studies revealed no impairment of fertility in rats at oral doses of 3 mg/kg/day in females (1 time the human dose based on mg/m²) and 15 mg/kg/day in males (4 times the human dose based on mg/m²). However, at doses above this level, the following effects were observed: a reduction in the fertility parameters of males and females, a reduction in the number of sperm in vaginal smears, extended estrous cycle, and a decrease in mating frequency.


Teratogenic Effects

Pregnancy Category B. Reproduction studies have been performed in rabbits, rats, and mice at oral doses up to 100, 150, and 200 mg/kg/day (57, 40, and 27 times the human dose based on mg/m²), respectively, and revealed no evidence of harm to the fetus due to oxiconazole nitrate. There are, however, no adequate and well-controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed.

Nursing Mothers: Because oxiconazole is excreted in human milk, caution should be exercised when the drug is administered to a nursing woman.

Pediatric Use

OXISTAT® Cream may be used in pediatric patients for tinea corporis, tinea cruris, tinea pedis, and tinea (pityriasis) versicolor; however, these indications for which OXISTAT® Cream has been shown to be effective rarely occur in children below the age of 12.

Geriatric Use

A limited number of patients at or above 60 years of age (n ~ 396) have been treated with OXISTAT Cream in US and non-US clinical trials, and a limited number (n = 43) have been treated with OXISTAT® Lotion in US clinical trials. The number of patients is too small to permit separate analysis of efficacy and safety. No adverse events were reported with OXISTAT® Lotion in geriatric patients, and the adverse reactions reported with OXISTAT® Cream in this population were similar to those reported by younger patients. Based on available data, no adjustment of dosage of OXISTAT® Cream and Lotion in geriatric patients is warranted.

Overdosage & Contraindications


When 5% oxiconazole cream (5 times the concentration of the marketed product) was applied at a rate of 1 g/kg to approximately 10% of body surface area of a group of 40 male and female rats for 35 days, 3 deaths and severe dermal inflammation were reported. No overdoses in humans have been reported with use of oxiconazole nitrate cream or lotion.


OXISTAT® Cream and Lotion are contraindicated in individuals who have shown hypersensitivity to any of their components.

Clinical Pharmacology



The penetration of oxiconazole nitrate into different layers of the skin was assessed using an in vitro permeation technique with human skin. Five hours after application of 2.5 mg/cm² of oxiconazole nitrate cream onto human skin, the concentration of oxiconazole nitrate was demonstrated to be 16.2 μmol in the epidermis, 3.64 μmol in the upper corium, and 1.29 μmol in the deeper corium. Systemic absorption of oxiconazole nitrate is low. Using radiolabeled drug, less than 0.3% of the applied dose of oxiconazole nitrate was recovered in the urine of volunteer subjects up to 5 days after application of the cream formulation.

Neither in vitro nor in vivo studies have been conducted to establish relative activity between the lotion and cream formulations.


Oxiconazole nitrate is an imidazole derivative whose antifungal activity is derived primarily from the inhibition of ergosterol biosynthesis, which is critical for cellular membrane integrity. It has in vitro activity against a wide range of pathogenic fungi.

Oxiconazole has been shown to be active against most strains of the following organisms both in vitro and in clinical infections at indicated body sites (see INDICATIONS AND USAGE):

Epidermophyton floccosum
Trichophyton mentagrophytes
Trichophyton rubrum
Malassezia furfur

The following in vitro data are available; however, their clinical significance is unknown. Oxiconazole exhibits satisfactory in vitro minimum inhibitory concentrations (MICs) against most strains of the following organisms; however, the safety and efficacy of oxiconazole in treating clinical infections due to these organisms have not been established in adequate and well-controlled clinical trials:

Candida albicans
Microsporum audouini
Microsporum canis
Microsporum gypseum
Trichophyton tonsurans
Trichophyton violaceum

Medication Guide


Information For Patients

The patient should be instructed to:

  1. Use OXISTAT® as directed by the physician. The hands should be washed after applying the medication to the affected area(s). Avoid contact with the eyes, nose, mouth, and other mucous membranes. OXISTAT® is for external use only.
  2. Use the medication for the full treatment time recommended by the physician, even though symptoms may have improved. Notify the physician if there is no improvement after 2 to 4 weeks, or sooner if the condition worsens (see below).
  3. Inform the physician if the area of application shows signs of increased irritation, itching, burning, blistering, swelling, or oozing.
  4. Avoid the use of occlusive dressings unless otherwise directed by the physician.
  5. Do not use this medication for any disorder other than that for which it was prescribed.
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