Overview
11 DESCRIPTION TAZORAC (tazarotene) Cream, 0.05% and 0.1% is for topical use and contains the active ingredient, tazarotene. Each gram of TAZORAC Cream, 0.05% and 0.1% contains 0.5 and 1 mg of tazarotene, respectively in a white cream base. Tazarotene is a member of the acetylenic class of retinoids. Chemically, tazarotene is ethyl 6-[(4,4-dimethylthiochroman-6-yl) ethynyl]nicotinate.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Tazarotene is a retinoid prodrug which is converted to its active form, the carboxylic acid of tazarotene, by deesterification. Tazarotenic acid binds to all three members of the retinoic acid receptor (RAR) family: RARα, RARβ, and RARɣ, but shows relative selectivity for RARβ, and RARɣ and may modify gene expression. The clinical significance of these findings is unknown. 12.3 Pharmacokinetics Following topical application, tazarotene undergoes esterase hydrolysis to form its active metabolite, tazarotenic acid. Little parent compound could be detected in the plasma. Tazarotenic acid was highly bound to plasma proteins (greater than 99%).
Indications
- 1 INDICATIONS AND USAGE TAZORAC ® Cream 0.05% and 0.1% is a retinoid indicated for the topical treatment of plaque psoriasis. ( 1.1 ) TAZORAC Cream 0.1% is indicated for the topical treatment of acne vulgaris. ( 1.2 ) 1.1 Plaque Psoriasis TAZORAC ® (tazarotene) Cream, 0.05% and 0.1% are indicated for the topical treatment of patients with plaque psoriasis. 1.2 Acne Vulgaris TAZORAC (tazarotene) Cream, 0.1% is also indicated for the topical treatment of patients with acne vulgaris.
Common Doses
- 2 mg
Dosage
2 DOSAGE AND ADMINISTRATION Apply a thin layer of TAZORAC Cream only to the affected area once daily in the evening. ( 2.1 , 2.2 ) Not for ophthalmic, oral, or intravaginal use. ( 2.2 ) If contact with eyes occurs, rinse thoroughly with water. ( 2.2 ) 2.1 Important Administration Instructions TAZORAC Cream is for topical use only. TAZORAC Cream is not for ophthalmic, oral, or intravaginal use. If contact with mucous membranes occurs, rinse thoroughly with water [see Warnings and Precaution ( 5.2 )] . Wash hands thoroughly after application. 2.
Contraindications
- 4 CONTRAINDICATIONS TAZORAC Cream is contraindicated in: Pregnancy. Retinoids may cause fetal harm when administered to a pregnant female [see Warnings and Precautions ( 5.1 ), Use in Specific Populations ( 8.1 , 8.3 )] . Individuals who have known hypersensitivity to any of its components [see Warnings and Precautions ( 5.2 )] . Pregnancy ( 4 , 8.1 ) Hypersensitivity ( 4 )
Side Effects
- 6 ADVERSE REACTIONS The following serious adverse reactions are discussed in more detail in other sections of the labeling: Embryofetal toxicity [see Warnings and Precautions ( 5.1 )] Photosensitivity and Risk of Sunburn [see Warnings and Precautions ( 5.3 )] Plaque psoriasis: Most common adverse reactions occurring in 10 to 23% of patients are pruritus, erythema, and burning. ( 6.1 ) Acne Vulgaris: Most common adverse reactions occurring in 10 to 30% of patients are desquamation, dry skin, erythema, and burning sensation. ( 6.
Interactions
- 7 DRUG INTERACTIONS No formal drug-drug interaction studies were conducted with TAZORAC Cream. In a trial of 27 healthy female subjects between the ages of 20–55 years receiving a combination oral contraceptive tablet containing 1 mg norethindrone and 35 mcg ethinyl estradiol, concomitant use of tazarotene administered as 1.1 mg orally (mean ± SD C max and AUC 0-24 of tazarotenic acid were 28.9 ± 9.4 ng/mL and 120.6 ± 28.5 ng • hr/mL) did not affect the pharmacokinetics of norethindrone and ethinyl estradiol over a complete cycle.