Compatibility of Desoximetasone and Tacrolimus

December 2003 | Volume 2 | Issue 6 | Original Article | 640 | Copyright © 2003

Jacob Levitt, MD, Terry Feldman, MD; Ildiko Riss, MD and On-Tai Leung, MD

Abstract

The physical and chemical compatibility of desoximetasone ointment 0.25% and tacrolimus ointment 0.1%, both widely used to treat atopic dermatitis, were determined. A 1:1 (w/w) mixture of desoximetasone ointment 0.25% (Topicort®, Taro Pharmaceuticals USA, Inc.) and tacrolimus ointment 0.1% (Protopic®, Fujisawa Healthcare, Inc.) were prepared and stored under three different temperature/ relative humidity conditions: 25oC/60% RH; 30oC/60% RH; and 40oC/75% RH. Unmixed ointments stored under the same temperature and humidity conditions as the mixture served as controls. Samples were evaluated at days 1, 2, 7, 14, and 28 for color, degree of physical separation, and chemical stability via reverse-phase high performance liquid chromatography. Ranges of relative recovery for each active ingredient for all storage conditions ((% Mixture/% Control) x 100) were 89.6 - 109.3% for tacrolimus and 99.0 - 103.4% for desoximetasone. No significant difference in physical appearance or chromatographic profile between the mixture and controls was observed. Therefore, we conclude that desoximetasone ointment 0.25% (Topicort®) and tacrolimus ointment 0.1% (Protopic®) are physically and chemically compatible up to four weeks when mixed in a ratio of 1:1 (w/w).

Purchase Original Article

Purchase a single fully formatted PDF of the original manuscript as it was published in the JDD.

Download the original manuscript as it was published in the JDD.

Contact a member of the JDD Sales Team to request a quote or purchase bulk reprints, e-prints or international translation requests.

To get access to JDD's full-text articles and archives, upgrade here.

Save an unformatted copy of this article for on-screen viewing.

Print the full-text of article as it appears on the JDD site.

→ proceed | ↑ close

Related Articles