DermacinRx Therazole Pak (clotrimazole and betamethasone dipropionate, zinc oxide): Uses, Dosage, Side Effects & Warnings

Uses

Clotrimazole and betamethasone dipropionate cream is a combination of an azole antifungal and corticosteroid and is indicated for the topical treatment of symptomatic inflammatory tinea pedis, tinea cruris, and tinea corporis due to Epidermophyton floccosum, Trichophyton mentagrophytes, and Trichophyton rubrum in patients 17 years and older. Clotrimazole and betamethasone dipropionate cream contains a combination of clotrimazole, an azole antifungal, and betamethasone dipropionate, a corticosteroid, and is indicated for the topical treatment of symptomatic inflammatory tinea pedis, tinea cruris, and tinea corporis due to Epidermophyton floccosum, Trichophyton mentagrophytes, and Trichophyton rubrum in patients 17 years and older. ( 1 ) Uses for the treatment and/or prevention of diaper rash temporarily protects and helps relieve minor skin irritation and itching due to rashes

Dosage and administration

Treatment of tinea corporis or tinea cruris: Apply a thin film of clotrimazole and betamethasone dipropionate cream into the affected skin areas twice a day for one week. Do not use more than 45 grams per week. Do not use with occlusive dressings. If a patient shows no clinical improvement after 1 week of treatment with clotrimazole and betamethasone dipropionate cream, the diagnosis should be reviewed. Do not use longer than 2 weeks. Treatment of tinea pedis: Gently massage a sufficient amount of clotrimazole and betamethasone dipropionate cream into the affected skin areas twice a day for two weeks. Do not use more than 45 grams per week. Do not use with occlusive dressings. If a patient shows no clinical improvement after 2 week of treatment with clotrimazole and betamethasone dipropionate cream, the diagnosis should be reviewed. Do not use longer than 4 weeks. Clotrimazole and betamethasone dipropionate cream is for topical use only. It is not for oral, ophthalmic, or intravaginal use. Tinea pedis: Apply a thin film to the affected skin areas twice a day for 2 weeks. ( 2 ) Tinea cruris and tinea corporis: Apply a thin film to the affected skin area twice a day for 1 week. ( 2 ) Clotrimazole and betamethasone dipropionate cream should not be used longer than 2 weeks in the treatment of tinea corporis or tinea cruris, and longer than 4 weeks in the treatment of tinea pedis. ( 2 ) Do not use with occlusive dressings unless directed by a physician. ( 2 ) Not for ophthalmic, oral or intravaginal use. ( 2 ) Directions cleanse skin with warm water and soap apply paste to area as needed for G-tubes, cleanse as above, apply thin layer and secure with drain sponge or product as directed

Dosage forms and strengths

Cream, 1%/0.05% (base). Each gram of clotrimazole and betamethasone dipropionate cream, USP contains 10 mg of clotrimazole, USP and 0.64 mg of betamethasone dipropionate USP, (equivalent to 0.5 mg of betamethasone) in a white to off-white hydrophilic cream. Cream, 1%/0.05% (base) ( 3 ) Each gram of clotrimazole and betamethasone dipropionate cream, contains 10 mg of clotrimazole and 0.64 mg of betamethasone dipropionate, (equivalent to 0.5 mg of betamethasone) ( 3 )

Contraindications

None. None. ( 4 )

Warnings and precautions

Clotrimazole and betamethasone dipropionate cream can cause reversible HPA axis suppression with the potential for glucocorticosteroid insufficiency during and after withdrawal of the treatment. Risk factor(s) are: use of high-potency topical corticosteroid, use over a large surface area or to areas under occlusion, prolonged use, altered skin barrier, liver failure, and young age. Modify use should HPA axis suppression develop. ( 5.1 , 8.4 ) Pediatric patients may be more susceptible to systemic toxicity. ( 5.1 , 8.4 ) The use of clotrimazole and betamethasone dipropionate cream in the treatment of diaper dermatitis is not recommended. ( 5.2 ) 5.1 Effects on Endocrine System Clotrimazole and betamethasone dipropionate cream can cause reversible hypothalamic-pituitary-adrenal (HPA) axis suppression with the potential for glucocorticosteroid insufficiency. This may occur during treatment or after withdrawal of treatment. Cushing’s syndrome and hyperglycemia may also occur due to the systemic effect of corticosteroids while on treatment. Factors that predispose a patient to HPA axis suppression include the use of high-potency steroids, large treatment surface areas, prolonged use, use of occlusive dressing, altered skin barrier, liver failure, and young age. Because of the potential for systemic corticosteroid effects, patients may need to be periodically evaluated for HPA axis suppression. This may be done by using the adrenocorticotropic hormone (ACTH) stimulation test. In a small trial, clotrimazole and betamethasone dipropionate cream was applied using large dosages, 7 g daily for 14 days (twice a day) to the crural area of normal adult subjects. Three of the 8 normal subjects on whom clotrimazole and betamethasone dipropionate cream was applied exhibited low morning plasma cortisol levels during treatment. One of these subjects had an abnormal cosyntropin test. The effect on morning plasma cortisol was transient and subjects recovered 1 week after discontinuing dosing. In addition, 2 separate trials in pediatric subjects demonstrated adrenal suppression as determined by cosyntropin testing [see Use in Specific Populations (8.4) ]. If HPA axis suppression is documented, gradually withdraw the drug, reduce the frequency of application, or substitute with a less potent corticosteroid. Pediatric patients may be more susceptible to systemic toxicity due to their larger skin-surface-to-body mass ratios [see Use in Specific Populations (8.4) ]. 5.2 Diaper Dermatitis The use of clotrimazole and betamethasone dipropionate cream in the treatment of diaper dermatitis is not recommended.

Warnings

Warnings For external use only Do not use on deep or puncture wounds animal bites serious burns When using this product do not get into eyes Stop use and ask a doctor if condition worsens symptoms last more than 7 days or clear up and occur again within a few days Keep out of reach of childern. If swallowed, get medical help or contact a Poison Control Center right away.

Side effects

Most common adverse reactions reported for clotrimazole and betamethasone dipropionate cream were paraesthesia in 1.9% of patients and rash, edema, and secondary infections each in less than 1% of patients. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Actavis at 1-800-432-8534 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. In clinical trials common adverse reaction reported for clotrimazole and betamethasone dipropionate cream was paresthesia in 1.9% of patients. Adverse reactions reported at a frequency less than 1% included rash, edema, and secondary infection. 6.2 Postmarketing Experience Because adverse reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. The following local adverse reactions have been reported with topical corticosteroids: itching, irritation, dryness, folliculitis, hypertrichosis, acneiform eruptions, hypopigmentation, perioral dermatitis, allergic contact dermatitis, maceration of the skin, skin atrophy, striae, miliaria, capillary fragility (ecchymoses), telangiectasia, and sensitization (local reactions upon repeated application of product). Adverse reactions reported with the use of clotrimazole are: erythema, stinging, blistering, peeling, edema, pruritus, urticaria, and general irritation of the skin.

Use in specific populations

8.1 Pregnancy Teratogenic Effects Pregnancy Category C There are no adequate and well-controlled studies with clotrimazole and betamethasone dipropionate cream in pregnant women. Therefore, clotrimazole and betamethasone dipropionate cream should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. There have been no teratogenic studies performed in animals or humans with the combination of clotrimazole and betamethasone dipropionate. Corticosteroids are generally teratogenic in laboratory animals when administered at relatively low dosage levels. Studies in pregnant rats with intravaginal doses up to 100 mg/kg (15 times the maximum human dose) revealed no evidence of fetotoxicity due to clotrimazole exposure. No increase in fetal malformations was noted in pregnant rats receiving oral (gastric tube) clotrimazole doses up to 100 mg/kg/day during gestation Days 6 to 15. However, clotrimazole dosed at 100 mg/kg/day was embryotoxic (increased resorptions), fetotoxic (reduced fetal weights), and maternally toxic (reduced body weight gain) to rats. Clotrimazole dosed at 200 mg/kg/day (30 times the maximum human dose) was maternally lethal, and therefore, fetuses were not evaluated in this group. Also in this study, doses up to 50 mg/kg/day (8 times the maximum human dose) had no adverse effects on dams or fetuses. However, in the combined fertility, teratogenicity, and postnatal development study described above, 50 mg/kg clotrimazole was associated with reduced maternal weight gain and reduced numbers of offspring reared to 4 weeks. Oral clotrimazole doses of 25, 50, 100, and 200 mg/kg/day (2 to 15 times the maximum human dose) were not teratogenic in mice. No evidence of maternal toxicity or embryotoxicity was seen in pregnant rabbits dosed orally with 60, 120, or 180 mg/kg/day (18 to 55 times the maximum human dose). Betamethasone dipropionate has been shown to be teratogenic in rabbits when given by the intramuscular route at doses of 0.05 mg/kg. This dose is approximately one-fifth the maximum human dose. The abnormalities observed included umbilical hernias, cephalocele, and cleft palates. Betamethasone dipropionate has not been tested for teratogenic potential by the dermal route of administration. Some corticosteroids have been shown to be teratogenic after dermal application to laboratory animals. 8.3 Nursing Mothers Systemically administered corticosteroids appear in human milk and can suppress growth, interfere with endogenous corticosteroid production, or cause other untoward effects. It is not known whether topical administration of corticosteroids can result in sufficient systemic absorption to produce detectable quantities in human milk. Because many drugs are excreted in human milk, caution should be exercised when clotrimazole and betamethasone dipropionate cream is administered to a nursing woman. 8.4 Pediatric Use The use of clotrimazole and betamethasone dipropionate cream in patients under 17 years of age is not recommended. Adverse events consistent with corticosteroid use have been observed in pediatric patients treated with clotrimazole and betamethasone dipropionate cream. In open-label trials, 17 of 43 (39.5%) evaluable pediatric subjects (aged 12 to 16 years old) using clotrimazole and betamethasone dipropionate cream for treatment of tinea pedis demonstrated adrenal suppression as determined by cosyntropin testing. In another open-label trial, 8 of 17 (47.1%) evaluable pediatric subjects (aged 12 to 16 years old) using clotrimazole and betamethasone dipropionate cream for treatment of tinea cruris demonstrated adrenal suppression as determined by cosyntropin testing. Because of a higher ratio of skin surface area to body mass, pediatric patients are at a greater risk than adults of HPA axis suppression when they are treated with topical corticosteroids. They are, therefore also at greater risk of adrenal insufficiency during and/or after withdrawal of treatment. Pediatric patients may be more susceptible than adults to skin atrophy, including striae, when they are treated with topical corticosteroids. HPA axis suppression, Cushing’s syndrome, linear growth retardation, delayed weight gain, and intracranial hypertension have been reported in pediatric patients receiving topical corticosteroids [see Warnings and Precautions (5.1) ]. Avoid use of clotrimazole and betamethasone dipropionate cream in the treatment of diaper dermatitis. 8.5 Geriatric Use Clinical studies of clotrimazole and betamethasone dipropionate cream did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. However, greater sensitivity of some older individuals cannot be ruled out. The use of clotrimazole and betamethasone dipropionate cream under occlusion, such as in diaper dermatitis, is not recommended. Postmarket adverse event reporting for clotrimazole and betamethasone dipropionate cream in patients aged 65 and above includes reports of skin atrophy and rare reports of skin ulceration. Caution should be exercised with the use of these corticosteroid-containing topical products on thinning skin.

Pregnancy

8.1 Pregnancy Teratogenic Effects Pregnancy Category C There are no adequate and well-controlled studies with clotrimazole and betamethasone dipropionate cream in pregnant women. Therefore, clotrimazole and betamethasone dipropionate cream should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. There have been no teratogenic studies performed in animals or humans with the combination of clotrimazole and betamethasone dipropionate. Corticosteroids are generally teratogenic in laboratory animals when administered at relatively low dosage levels. Studies in pregnant rats with intravaginal doses up to 100 mg/kg (15 times the maximum human dose) revealed no evidence of fetotoxicity due to clotrimazole exposure. No increase in fetal malformations was noted in pregnant rats receiving oral (gastric tube) clotrimazole doses up to 100 mg/kg/day during gestation Days 6 to 15. However, clotrimazole dosed at 100 mg/kg/day was embryotoxic (increased resorptions), fetotoxic (reduced fetal weights), and maternally toxic (reduced body weight gain) to rats. Clotrimazole dosed at 200 mg/kg/day (30 times the maximum human dose) was maternally lethal, and therefore, fetuses were not evaluated in this group. Also in this study, doses up to 50 mg/kg/day (8 times the maximum human dose) had no adverse effects on dams or fetuses. However, in the combined fertility, teratogenicity, and postnatal development study described above, 50 mg/kg clotrimazole was associated with reduced maternal weight gain and reduced numbers of offspring reared to 4 weeks. Oral clotrimazole doses of 25, 50, 100, and 200 mg/kg/day (2 to 15 times the maximum human dose) were not teratogenic in mice. No evidence of maternal toxicity or embryotoxicity was seen in pregnant rabbits dosed orally with 60, 120, or 180 mg/kg/day (18 to 55 times the maximum human dose). Betamethasone dipropionate has been shown to be teratogenic in rabbits when given by the intramuscular route at doses of 0.05 mg/kg. This dose is approximately one-fifth the maximum human dose. The abnormalities observed included umbilical hernias, cephalocele, and cleft palates. Betamethasone dipropionate has not been tested for teratogenic potential by the dermal route of administration. Some corticosteroids have been shown to be teratogenic after dermal application to laboratory animals.

Pediatric use

8.4 Pediatric Use The use of clotrimazole and betamethasone dipropionate cream in patients under 17 years of age is not recommended. Adverse events consistent with corticosteroid use have been observed in pediatric patients treated with clotrimazole and betamethasone dipropionate cream. In open-label trials, 17 of 43 (39.5%) evaluable pediatric subjects (aged 12 to 16 years old) using clotrimazole and betamethasone dipropionate cream for treatment of tinea pedis demonstrated adrenal suppression as determined by cosyntropin testing. In another open-label trial, 8 of 17 (47.1%) evaluable pediatric subjects (aged 12 to 16 years old) using clotrimazole and betamethasone dipropionate cream for treatment of tinea cruris demonstrated adrenal suppression as determined by cosyntropin testing. Because of a higher ratio of skin surface area to body mass, pediatric patients are at a greater risk than adults of HPA axis suppression when they are treated with topical corticosteroids. They are, therefore also at greater risk of adrenal insufficiency during and/or after withdrawal of treatment. Pediatric patients may be more susceptible than adults to skin atrophy, including striae, when they are treated with topical corticosteroids. HPA axis suppression, Cushing’s syndrome, linear growth retardation, delayed weight gain, and intracranial hypertension have been reported in pediatric patients receiving topical corticosteroids [see Warnings and Precautions (5.1) ]. Avoid use of clotrimazole and betamethasone dipropionate cream in the treatment of diaper dermatitis.

Geriatric use

8.5 Geriatric Use Clinical studies of clotrimazole and betamethasone dipropionate cream did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. However, greater sensitivity of some older individuals cannot be ruled out. The use of clotrimazole and betamethasone dipropionate cream under occlusion, such as in diaper dermatitis, is not recommended. Postmarket adverse event reporting for clotrimazole and betamethasone dipropionate cream in patients aged 65 and above includes reports of skin atrophy and rare reports of skin ulceration. Caution should be exercised with the use of these corticosteroid-containing topical products on thinning skin.

Description

Clotrimazole and betamethasone dipropionate cream USP, 1%/0.05% (base), contains combinations of clotrimazole USP, an azole antifungal, and betamethasone dipropionate USP, a corticosteroid, for topical use. Chemically, clotrimazole, USP is 1-( o -Chloro-α,α-diphenylbenzyl)imidazole, with the molecular formula C 22 H 17 ClN 2 , a molecular weight of 344.84, and the following structural formula: Clotrimazole, USP is an odorless, white crystalline powder, insoluble in water and soluble in ethanol. Betamethasone dipropionate, USP has 9-Fluoro-11β,17,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione 17,21-dipropionate, with the molecular formula C 28 H 37 FO 7 , a molecular weight of 504.59, and the following structural formula: Betamethasone dipropionate, USP is a white to creamy-white, odorless crystalline powder, insoluble in water. Each gram of clotrimazole and betamethasone dipropionate cream, USP contains 10 mg clotrimazole, USP and 0.64 mg betamethasone dipropionate, USP (equivalent to 0.5 mg betamethasone), in a white to off-white hydrophilic cream. Inactive ingredients: Ceteareth-30, cetyl alcohol, mineral oil, propylene glycol, purified water, sodium phosphate monobasic monohydrate, stearyl alcohol and white petrolatum; benzyl alcohol as preservative. image description image description

Mechanism of action

12.1 Mechanism of Action Clotrimazole is an azole antifungal [see Clinical Pharmacology (12.4) ]. Betamethasone dipropionate is a corticosteroid. Corticosteroids play a role in cellular signaling, immune function, inflammation, and protein regulation; however, the precise mechanism of action for the treatment of tinea pedis, tinea cruris and tinea corporis is unknown.

How supplied

Clotrimazole and betamethasone dipropionate cream, USP is available as follows: 15 gram tube in a carton (NDC 0472-0379-15) 45 gram tube in a carton (NDC 0472-0379-45) Store at 20° to 25°C (68° to 77°F); excursions permitted to 15° to 30°C (59° to 86°F) [See USP Controlled Room Temperature].

Storage

Other information protect from freezing avoid excessive heat

Patient information

See FDA-Approved Patient Labeling ( Patient Information ) Inform the patient of the following: Use clotrimazole and betamethasone dipropionate cream as directed by the physician. It is for external use only. Avoid contact with the eyes, the mouth, or intravaginally. Do not use clotrimazole and betamethasone dipropionate cream on the face or underarms. Do not use more than 45 grams of clotrimazole and betamethasone dipropionate cream per week. When using clotrimazole and betamethasone dipropionate cream in the groin area, patients should use the medication for 2 weeks only, and apply the cream sparingly. Patients should wear loose-fitting clothing. Notify the physician if the condition persists after 2 weeks. Do not use clotrimazole and betamethasone dipropionate cream for any disorder other than that for which it was prescribed. Do not bandage, cover or wrap the treatment area unless directed by the physician. Avoid use of clotrimazole and betamethasone dipropionate cream in the diaper area, as diapers or plastic pants may constitute occlusive dressing. Report any signs of local adverse reactions to the physician. Advise patients that local reactions and skin atrophy are more likely to occur with occlusive use or prolonged use. This medication is to be used for the full prescribed treatment time, even though the symptoms may have improved. Notify the physician if there is no improvement after 1 week of treatment for tinea cruris or tinea corporis, or after 2 weeks for tinea pedis. Manufactured by: G&W Laboratories, Inc. 111 Coolidge Street South Plainfield, NJ 07080 USA Distributed by: Actavis Pharma, Inc. Parsippany, NJ 07054 USA I600-5511/14A GW7100 Revised – July 2016

DermacinRx Therazole Pak NDC products (1)

NDC	Strength & form	Labeler	Type
59088-893	Kit	PureTek Corporation	UNAPPROVED DRUG OTHER

Frequently asked questions

What is DermacinRx Therazole Pak used for?

Clotrimazole and betamethasone dipropionate cream is a combination of an azole antifungal and corticosteroid and is indicated for the topical treatment of symptomatic inflammatory tinea pedis, tinea cruris, and tinea corporis due to Epidermophyton floccosum, Trichophyton mentagrophytes, and Trichophyton rubrum in patients 17 years and older. Clotrimazole and betamethasone dipropionate cream…

What are the side effects of DermacinRx Therazole Pak?

Most common adverse reactions reported for clotrimazole and betamethasone dipropionate cream were paraesthesia in 1.9% of patients and rash, edema, and secondary infections each in less than 1% of patients. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Actavis at 1-800-432-8534 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trial Experience Because clinical trials are… See the full label for the complete list.

Who makes DermacinRx Therazole Pak?

DermacinRx Therazole Pak is listed by 1 labeler in the FDA NDC directory, including PureTek Corporation.