ADAPALENE

Adapalene cream, 0.1%, contains adapalene 0.1% in an aqueous cream emulsion consisting of carbomer 934P, cyclomethicone, edetate disodium, glycerin, methyl glucose sesquistearate, methylparaben, PEG-20 methyl glucose sesquistearate, phenoxyethanol, propylparaben, purified water, squalane, and trolamine. The chemical name of adapalene is 6-[3-(1-adamantyl)-4-methoxyphenyl]-2-naphthoic acid. It is a white to off-white powder which is soluble in tetrahydrofuran, sparingly soluble in ethanol, and practically insoluble in water. The molecular formula is C 28 H 28 O 3 and molecular weight is 412.52. Adapalene is represented by the following structural formula:

: Adapalene cream is indicated for the topical treatment of acne vulgaris.

: Adapalene cream should be applied to affected areas of the skin, once daily at nighttime. A thin film of the cream should be applied to the skin areas where acne lesions appear, using enough to cover the entire affected areas lightly. A mild transitory sensation of warmth or slight stinging may occur shortly after the application of adapalene cream.

: Adapalene cream should not be administered to individuals who are hypersensitive to adapalene or any of the components in the cream vehicle.

In controlled clinical trials, local cutaneous irritation was monitored in 285 acne patients who used adapalene cream once daily for 12 weeks. The frequency and severity of erythema, scaling, dryness, pruritus and burning were assessed during these studies. The incidence of local cutaneous irritation with adapalene cream from the controlled clinical studies is provided in the following table: Incidence of Local Cutaneous Irritations with Adapalene Cream from Controlled Clinical Studies (N=285) None Mild Moderate Severe Erythema 52% (148) 38% (108) 10% (28) <1% (1) Scaling 58% (166) 35% (100) 6% (18) <1% (1) Dryness 48% (136) 42% (121) 9% (26) <1% (2) Pruritis (persistent) 74% (211) 21% (61) 4% (12) <1% (1) Burning/Stinging (persistent) 71% (202) 24% (69) 4% (12) <1% (2) Other reported local cutaneous adverse events in patients who used adapalene cream once daily included: sunburn (2%), skin discomfort-burning and stinging (1%) and skin irritation (1%). Events occurring in less than 1% of patients treated with adapalene cream included: acne flare, dermatitis and contact dermatitis, eyelid edema, conjunctivitis, erythema, pruritus, skin discoloration, rash, and eczema.

As adapalene cream has the potential to produce local irritation in some patients, concomitant use of other potentially irritating topical products (medicated or abrasive soaps and cleansers, soaps and cosmetics that have a strong drying effect, and products with high concentrations of alcohol, astringents, spices or lime rind) should be approached with caution. Particular caution should be exercised in using preparations containing sulfur, resorcinol, or salicylic acid in combination with adapalene cream. If these preparations have been used, it is advisable not to start therapy with adapalene cream until the effects of such preparations in the skin have subsided.