Medicines are sometimes prescribed for conditions that are not mentioned in patient information leaflets. Do not use CLOBEX® Shampoo (clobetasol propionate shampoo) for a condition for which it was not prescribed. Do not give CLOBEX® Shampoo (clobetasol propionate shampoo) to other people, even if they have the same symptoms you have. It may harm them. This leaflet summarizes the most important information about CLOBEX® Shampoo (clobetasol propionate shampoo) . If you would like more information, talk with your doctor. You can ask your pharmacist or doctor for information about CLOBEX® Shampoo (clobetasol propionate shampoo) that is written for health professionals.
FP has low oral bioavailability and high hepatic first-pass metabolism, which results in low plasma FP concentrations; any systemic levels are believed to occur through adsorption from the lungs. Native FP absorbed by the gastrointestinal tract (<1% total FP) is rapidly metabolized by cytochrome P450 isoform 3A4 to yield fluticasone 17-beta-carboxylic acid, its primary metabolic product.(3) Fluticasone 17-beta-carboxylic acid is pharmacologically inactive and has increased water solubility such that it is excreted in urine. Accordingly, fluticasone 17-beta-carboxylic acid is detected in urine in individuals recently exposed to inhaled FP therapy. Fluticasone 17-beta-carboxylic acid may be detected in urine as early as 16 to 24 hours following a patient's first administration of low dose (220 mcg) FP therapy. The window of detection for fluticasone 17-beta-carboxylic acid is 6 days following cessation of FP therapy.