NuDermRxPAK 60

Generic name: dimethicone, calcipotriene
Dosage form: cream, kit

FOR TOPICAL DERMATOLOGIC USE ONLY.

Rx only

Not for Ophthalmic, Oral or Intravaginal Use.

NuDermRxPAK 60 Description

Calcipotriene Cream, 0.005% contains calcipotriene monohydrate, a synthetic vitamin D 3 derivative, for topical dermatological use.

Chemically, calcipotriene monohydrate is (5Z,7E,22E,24S)-24-cyclopropyl-9,10-secochola-5,7,10(19),22-tetraene-1α,3β,24-triol monohydrate, with the empirical formula C 27H 40O 3•H 2O, a molecular weight of 430.6, and the following structural formula:

Calcipotriene monohydrate is a white or off-white crystalline substance. Calcipotriene Cream contains calcipotriene monohydrate equivalent to 50 μg/g anhydrous calcipotriene in a cream base of cetearyl alcohol, ceteth-20, diazolidinyl urea, dichlorobenzyl alcohol, dibasic sodium phosphate, edetate disodium, dl-alpha tocopherol, glycerin, mineral oil, petrolatum, and water.

NuDermRxPAK 60 - Clinical Pharmacology

In humans, the natural supply of vitamin D depends mainly on exposure to the ultraviolet rays of the sun for conversion of 7-dehydrocholesterol to vitamin D 3 (cholecalciferol) in the skin. Calcipotriene is a synthetic analog of vitamin D 3.

Clinical studies with radiolabelled calcipotriene ointment indicate that approximately 6% (± 3%, SD) of the applied dose of calcipotriene is absorbed systemically when the ointment is applied topically to psoriasis plaques, or 5% (± 2.6%, SD) when applied to normal skin, and much of the absorbed active is converted to inactive metabolites within 24 hours of application. Systemic absorption of the cream has not been studied.

Vitamin D and its metabolites are transported in the blood, bound to specific plasma proteins. The active form of the vitamin, 1,25-dihydroxy vitamin D 3 (calcitriol), is known to be recycled via the liver and excreted in the bile. Calcipotriene metabolism following systemic uptake is rapid, and oc...