Product Description.:
Extina Foam contains 2% ketoconazole USP, an antifungal agent, in a thermolabile hydroethanolic foam for topical application. The chemical name for ketoconazole is piperazine, 1-acetyl-4-[4-[[2-(2,4-dichlorophenyl) -2-(1H-imidazol-1-ylmethyl)-1,3-dioxolan-4-yl]methoxy]phenyl]-, cis- with the molecular formula C26H28Cl2N4O4 and a molecular weight of 531.43.
Extina Foam contains 20 mg ketoconazole USP per gram in a thermolabile hydroethanolic foam vehicle consisting of cetyl alcohol NF, citric acid USP, ethanol (denatured with tert-butyl alcohol and brucine sulfate) 58%, polysorbate 60 NF, potassium citrate USP, propylene glycol USP, purified water USP, and stearyl alcohol NF pressurized with a hydrocarbon (propane/butane) propellant.
INDICATIONS
Extina Foam is indicated for the topical treatment of seborrheic dermatitis in immunocompetent patients 12 years of age and older. Safety and efficacy of Extina Foam for treatment of fungal infections have not been established.
DOSAGE AND ADMINISTRATION
Extina Foam should be applied to the affected area(s) twice daily for four weeks. Hold the container upright, and dispense Extina Foam into the cap of the can or other cool surface in an amount sufficient to cover the affected area(s). Dispensing directly onto hands is not recommended, as the foam will begin to melt immediately upon contact with warm skin. Pick up small amounts of Extina Foam with the fingertips, and gently massage into the affected area(s) until the foam disappears. For hair-bearing areas, part the hair, so that Extina Foam may be applied directly to the skin (rather than on the hair). Avoid contact with the eyes and other mucous membranes. Extina foam is not for ophthalmic, oral or intravaginal use.
Dosage Forms And Strengths
Extina Foam contains 2% ketoconazole in a thermolabile hydroethanolic foam, and is provided in 50 g and 100 g aluminum containers.
SIDE EFFECTS
Adverse Reactions in Clinical Trials
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. The adverse reaction information from clinical trials does, however, provide a basis for identifying the adverse reactions that appear to be related to drug use and for approximating rates. The safety data presented in Table 1 (below) reflect exposure to Extina Foam in 672 subjects, 12 years and older with seborrheic dermatitis. Subjects applied Extina Foam or vehicle foam twice daily for 4 weeks to affected areas on the face, scalp, and/or chest.
