Abstract: Roflumilast crystals have been shown to increase in size during storage. The size of the roflumilast crystals can affect the bioavailability and efficacy of a pharmaceutical composition. The growth of roflumilast crystals can be inhibited during storage by including hexylene glycol in the composition. The resulting composition has improved bioavailability and efficacy and can be used to inhibit phosphodiesterase 4 in a patient in need of such treatment.

Abstract: A method for altering the PK profile of a pharmaceutical formulation containing a PDE-4 inhibitor, such as roflumilast, to reduce the spike in Cmax. The spike in Cmax is reduced by topically administering the PDE-4 inhibitor in combination with one or more phosphate ester surfactants. Reducing the spike in Cmax will reduce gastrointestinal side effects and result in better patient compliance.

Abstract: Topical pharmaceutical compositions comprising roflumilast and solvents that are capable of dissolving high amounts of roflumilast. The pharmaceutical compositions are capable of dissolving high amounts of roflumilast relative to other commonly used solvents in approved topical pharmaceutical compositions. The solvents are particularly useful when combined with water to maintain high levels of dissolved roflumilast, which is highly insoluble in water.

Abstract: A method for altering the PK profile of a pharmaceutical formulation containing a PDE-4 inhibitor, such as roflumilast, to reduce the spike in Cmax. The spike in Cmax is reduced by topically administering the PDE-4 inhibitor in combination with one or more phosphate ester surfactants. Reducing the spike in Cmax will reduce gastrointestinal side effects and result in better patient compliance.

Abstract: The present invention is a method and composition comprising laureth-4 in topical formulations, wherein the laureth-4 increases the penetration of active ingredients across the skin. In a particularly preferred embodiment, the active ingredient is SHR0302.

Abstract: Pharmaceutical compositions for the topical administration of a drug to the pilosebaceous unit and methods for administering the same. As disclosed herein, the inventors of the present invention have made the surprising discovery that pharmaceutical compositions comprising small particles of an active pharmaceutical ingredient can be administered to the pilosebaceous unit. The pharmaceutical composition can comprise SHR0302 or spironolactone as an active pharmaceutical ingredient.

Abstract: A method for altering the PK profile of a pharmaceutical formulation containing a PDE-4 inhibitor, such as roflumilast, to reduce the spike in Cmax. The spike in Cmax is reduced by topically administering the PDE-4 inhibitor in combination with one or more phosphate ester surfactants. Reducing the spike in Cmax will reduce gastrointestinal side effects and result in better patient compliance.

Abstract: Decreasing skin penetration lag times will improve the bioavailability of a topically administered roflumilast composition. A shorter skin penetration lag time provides quicker onset of disease relief and more consistent bioavailability as there is less transference to clothing or other people. The skin penetration lag time for roflumilast can be reduced by formulating a roflumilast composition to have a pH between 4.0-6.5 and/or combining roflumilast with an emulsifier blend comprising cetearyl alcohol, dicetyl phosphate and ceteth-10 phosphate.

Abstract: The present invention is directed to methods for improving the therapeutic outcome of treatment with roflumilast. The therapeutic outcome is improved by consistent delivery and/or a longer plasma half-life of a topically administered roflumilast composition. The roflumilast composition preferably includes dicetyl phosphate, ceteth-10 phosphate, diethylene glycol I monoethyl ether, and/or hexylene glycol.

Abstract: The present invention is directed to methods for improving the therapeutic outcome of treatment with roflumilast. The therapeutic outcome is improved by consistent delivery and/or a longer plasma half-life of a topically administered roflumilast composition. The roflumilast composition preferably includes dicetyl phosphate, ceteth-10 phosphate, diethylene glycol monoethyl ether, and/or hexylene glycol.

Abstract: A method for altering the PK profile of a pharmaceutical formulation containing a PDE-4 inhibitor, such as roflumilast, to reduce the spike in Cmax. The spike in Cmax is reduced by topically administering the PDE-4 inhibitor in combination with one or more phosphate ester surfactants. Reducing the spike in Cmax will reduce gastrointestinal side effects and result in better patient compliance.

Abstract: A method for altering the PK profile of a pharmaceutical formulation containing a PDE-4 inhibitor, such as roflumilast, to reduce the spike in Cmax. The spike in Cmax is reduced by topically administering the PDE-4 inhibitor in combination with one or more phosphate ester surfactants. Reducing the spike in Cmax will reduce gastrointestinal side effects and result in better patient compliance.

Abstract: The present invention is directed to methods for improving the therapeutic outcome of treatment with roflumilast. The therapeutic outcome is improved by consistent delivery and/or a longer plasma half-life of a topically administered roflumilast composition. The roflumilast composition preferably includes dicetyl phosphate, ceteth-10 phosphate, diethylene glycol I monoethyl ether, and/or hexylene glycol.

Abstract: Roflumilast crystals have been shown to increase in size during storage. The size of the roflumilast crystals can affect the bioavailability and efficacy of a pharmaceutical composition. The growth of roflumilast crystals can be inhibited during storage by including hexylene glycol in the composition. The resulting composition has improved bioavailability and efficacy and can be used to inhibit phosphodiesterase 4 in a patient in need of such treatment.

Abstract: The present invention is a method and composition comprising laureth-4 in topical formulations, wherein the laureth-4 increases the penetration of active ingredients across the skin. In a particularly preferred embodiment, the active ingredient is SHR0302.

Abstract: The present invention is directed to a method of treating a fungal infection comprising administering topically, to a subject in need thereof, an anti-fungal effective amount of roflumilast. Preferably, topically administered roflumilast is used to treat fungal infections, fungal growth of and/or hypersensitivity to the fungi Malassezia spp. Patients may also be suffering from seborrheic dermatitis, dandruff, dupilumab facial redness, Tinea versicolor, Pityriasis versicolor, Tinea circinata, Tinea pedis, Tinea unguium, Tinea manus, Tinea cruris, Tinea corporis, Tinea faciei, Tinea capitis, and/or Tinea incognito. Topically administered roflumilast is a quick and effective antifungal agent and presents a viable alternative to current antifungal treatments.

Abstract: Pharmaceutical compositions for the topical administration of a drug to the pilosebaceous unit and methods for administering the same. As disclosed herein, the inventors of the present invention have made the surprising discovery that pharmaceutical compositions comprising small particles of an active pharmaceutical ingredient can be administered to the pilosebaceous unit. The pharmaceutical composition can comprise SHR0302 or spironolactone as an active pharmaceutical ingredient.

Abstract: The low aqueous solubility of roflumilast in parenteral preparations and topical emulsions, suspensions, gels or solutions can be improved by including a blend of water-miscible solvents in the pharmaceutical composition. The blend of water-miscible solvents can include diethylene glycol monoethyl ether (Tradename Transcutol®; abbreviated DEGEE) and water. The ratio of diethylene glycol monoethyl ether to water is from 1:10 to 20:1. The resulting composition has improved bioavailability and efficacy and can be used to inhibit phosphodiesterase 4 in a patient in need of such treatment.

Abstract: The low aqueous solubility of roflumilast in parenteral preparations and topical emulsions, suspensions, gels or solutions can be improved by including a blend of water-miscible solvents in the pharmaceutical composition. The blend of water-miscible solvents can include diethylene glycol monoethyl ether (Tradename Transcutol®; abbreviated DEGEE) and water. The ratio of diethylene glycol monoethyl ether to water is from 1:10 to 20:1. The resulting composition has improved bioavailability and efficacy and can be used to inhibit phosphodiesterase 4 in a patient in need of such treatment.

Abstract: The present invention is directed to methods for improving the therapeutic outcome of treatment with roflumilast. The therapeutic outcome is improved by consistent delivery and/or a longer plasma half-life of a topically administered roflumilast composition. The roflumilast composition preferably includes dicetyl phosphate, ceteth-10 phosphate, diethylene glycol monoethyl ether, and/or hexylene glycol.