Clotrimazole-Betamethasone (clotrimazole/betamethasone dipropionate)

Topical Corticosteroids Topical Cream (GRAM)

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Betamethasone is a synthetic fluorinated corticosteroid.

Clotrimazole, an imidazole derivative, is a synthetic azole antifungal agent.

Clotrimazole is a broad-spectrum antifungal agent that exerts its antifungal activity by interfering with the biosynthesis of ergosterol, a major component of the fungal cell membrane. As a result, cell membrane permeability is altered, causing loss of potassium and other cellular constituents. Ergosterol also plays a role in directly stimulating the growth of fungal cells.

The combined effects of these actions result in a dose- and time-dependent inhibition of fungal growth.

Clotrimazole is generally considered to be fungistatic, but exhibits fungicidal effects at higher concentrations. In vitro, clotrimazole exhibits fungistatic and fungicidal activity against most strains of Trichophyton rubrum, T. mentagrophytes, Epidermophyton floccosum, and Microsporum canis, and Candida species including Candida albicans. In general, the in vitro activity of clotrimazole corresponds to that of tolnaftate and griseofulvin against the mycelia of dermatophytes (Trichophyton, Microsporum, and Epidermophyton), and to that of the polyenes (amphotericin B and nystatin) against Candida.

Resistance to clotrimazole has been observed in some Candida isolates, particularly in immunocompromised patients, and has been linked to overexpression of efflux pump genes. Cross resistance can occur among the azole antifungals (e.g., clotrimazole, ketoconazole, miconazole).

Following oral administration of a lozenge containing 10 mg of clotrimazole and dissolution of the lozenge in the mouth (which takes approximately 30 minutes), concentrations of clotrimazole sufficient to inhibit most species of Candida are present in saliva for up to 3 hours. Administration of a 10-mg clotrimazole lozenge every 3 hours reportedly maintains salivary concentrations of clotrimazole greater than the MIC of the drug for most species of Candida. The long-term effective concentration of clotrimazole in saliva appears to be related to slow release of the drug from the oral mucosa to which the drug is apparently bound.

The total amount of clotrimazole absorbed following dissolution in the mouth of a lozenge containing the drug has not been determined to date.

Following topical and vaginal administration, clotrimazole appears to be minimally absorbed. Following application to the skin, the highest concentrations of clotrimazole are present in the stratum corneum; lower drug concentrations occur in the stratum spinosum and the papillary and reticular dermis.

Betamethasone shares the actions of the other topical corticosteroids and is used for the relief of the inflammatory and pruritic manifestations of corticosteroid-responsive dermatoses.

Generic name: clotrimazole/betamethasone dipropionate
Pronunciation: (kloe-TRIM-a-zole/BAY-ta-METH-a-sone)
Drug class: Topical Corticosteroids
Therapeutic class: Dermatological

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Clotrimazole-Betamethasone:

  • Tinea Corporis
  • Tinea Cruris
  • Tinea Pedis

Also known as: Corporeal Ringworm, Dermatomycosis Pedis, Dhobie Itch, Eczema Marginatum, Jock Itch, Tinea Circinata, Tinea Glabrosa, Tinea Inguinalis, Tinea Of The Foot.

Dosing

Betamethasone dipropionate and valerate are applied topically. Betamethasone dipropionate preparations and betamethasone valerate preparations should not be used with occlusive dressings and patients should be warned that treated areas of the skin should not be bandaged or otherwise covered or wrapped as to be occlusive, unless directed by a clinician.

Concentrations of the dipropionate and valerate preparations usually are expressed in terms of betamethasone. Concentration of betamethasone valerate foam is expressed in terms of betamethasone valerate.

Topical preparations of betamethasone dipropionate usually are applied sparingly in thin films and are rubbed gently into the affected area once or twice daily. Because betamethasone dipropionate preparations formulated in an optimized (augmented) vehicle are among the most potent topical corticosteroid preparations currently available, the manufacturers state that dosage of betamethasone dipropionate 0.05% ointments, creams, gels, or lotions in optimized (augmented) vehicles should not exceed 45 g, 45 g, 50 g, or 50 mL per week, respectively. Some manufacturers also state that duration of therapy with these optimized preparations should not exceed 2 weeks.

Topical betamethasone 0.1% creams and ointments (as valerate) usually are applied sparingly in thin films and are rubbed gently into the affected area 1-3 times daily. However, once- or twice-daily administration of these preparations often is effective. Topical betamethasone valerate 0.1% solutions are applied sparingly (e.g., a few drops) and are rubbed gently into the affected area twice daily, in the morning and evening. Dosage of the topical solution may be increased in patients with resistant dermatoses. However, dosing frequency should be decreased to once daily following clinical improvement.

For relief of inflammatory and pruritic manifestations of corticosteroid-responsive dermatoses of the scalp, betamethasone valerate 0.12% foam should be applied twice daily, in the morning and evening. For application to the scalp, the can containing betamethasone valerate foam should be inverted and small amounts of the preparation placed on a saucer or other cool surface. The foam should not be dispensed directly to the hands since the foam will begin to melt immediately upon contact with warm skin. Small amounts of the preparation should be massaged gently into the scalp until the foam disappears and entire scalp area has been treated.

For the topical treatment of symptomatic inflammatory tinea pedis, tinea cruris, or tinea corporis caused by Trichophyton mentagrophytes, T. rubrum, or Epidermophyton floccosum, the fixed-combination cream or lotion containing betamethasone 0.05% and clotrimazole 1% should be applied sparingly and rubbed gently into the affected area twice daily, in the morning and evening. If clinical improvement does not occur after 1 week in the treatment of tinea cruris or tinea corporis or after 2 weeks in the treatment of tinea pedis, the diagnosis should be reevaluated. The manufacturer states that dosage of the combination cream or lotion should not exceed 45 g or 45 mL per week, respectively, and duration of therapy with these combination preparations should not exceed 2 weeks in the treatment of tinea cruris or tinea corporis or 4 weeks in the treatment of tinea pedis. Occlusive dressings should not be used with these combination preparations.

For the topical treatment of plaque psoriasis (psoriasis vulgaris) in adults 18 years of age or older, the fixed-combination ointment containing betamethasone 0.05% and calcipotriene 0.005% should be applied and rubbed gently into the affected area until absorbed once daily. The combination ointment should not be applied to greater than 30% of body surface area. The manufacturer states that dosage of the combination ointment should not exceed 100 g per week, and duration of therapy should not exceed 4 consecutive weeks. Occlusive dressings should not be used with the combination preparation, unless directed by a clinician. The fixed-combination ointment should not be applied to the face, axillae, or groin area. The fixed-combination ointment should not be used in patients with erythrodermic, exfoliative, or pustular psoriasis or in patients with preexisting atrophy at the treatment site. Contact with the eyes should be avoided. If irritation occurs, therapy with the fixed-combination ointment should be discontinued and appropriate treatment instituted. Patients should wash their hands after applying the drug. The fixed-combination ointment is not for ophthalmic, oral, or intravaginal use.

For the topical treatment of moderate to severe plaque psoriasis (psoriasis vulgaris) of the scalp in adults 18 years of age or older, the fixed-combination suspension containing betamethasone 0.05% and calcipotriene 0.005% should be applied to the affected area(s) on the scalp once daily for 2 weeks or until cleared. The manufacturer states that dosage of the combination suspension should not exceed 100 g per week, and duration of therapy should not exceed 8 weeks. Occlusive dressings should not be used with the combination preparation, unless directed by a clinician. The combination suspension should not be applied to the face, axillae, or groin area. In addition, the suspension should not be used in patients with erythrodermic, exfoliative, or pustular psoriasis or in patients with preexisting atrophy at the treatment site. Contact with the eyes should be avoided; eye irritation may occur. The bottle containing the suspension should be shaken prior to each use; patients should wash their hands after applying the drug. The fixed-combination suspension is not for ophthalmic, oral, or intravaginal use.

Because calcipotriene may increase the effect of ultraviolet radiation to induce skin tumors, patients who apply the fixed-combination ointment or suspension to exposed areas of the body should avoid exposure to natural or artificial (e.g., sunlamps, tanning booths) sunlight and limit or avoid phototherapy.

Drug interactions

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Contraindications

*Known hypersensitivity to clotrimazole or other imidazoles or any ingredient in the formulation.

Adverse reactions

Lozenge: nausea, vomiting, unpleasant mouth sensations, and pruritus.

Topical cream or solution: blistering, erythema, edema, pruritus, burning, stinging, peeling, urticaria, and general irritation of skin.

Precautions

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ICD codes

CodeTypeDescription
Tinea corporis
B35.4ICD10CMTinea corporis
Tinea cruris
B35.6ICD10CMTinea cruris
Tinea pedis
B35.3ICD10CMTinea pedis

ICD code information from First Databank (FDB).

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data