How the Three Active Ingredients Work
Cholestyramine — Bile-Acid Sequestrant
Cholestyramine is an anion-exchange resin that binds bile acids and bile salts. In stool and stoma output, these substances can irritate and break down nearby skin. Applied topically, cholestyramine binds them at the skin surface to help reduce their irritating effect.
Miconazole — Antifungal
Miconazole is an azole antifungal. It blocks the fungal cell's ability to make ergosterol, a key part of its membrane, which targets yeasts such as Candida that often grow in warm, moist, broken-down skin.
Mupirocin — Topical Antibacterial
Mupirocin blocks a bacterial enzyme (isoleucyl-tRNA synthetase) that bacteria need to build proteins. It is active against many gram-positive bacteria, including Staphylococcus aureus, that can colonize compromised skin.
Why It Is Combined in an Anhydrous Ellage® Base
Ellage® Anhydrous is a water-free base. A water-free vehicle is useful on moist, weepy, or broken skin because it does not add moisture to an already-wet area and can help keep the actives stable. Combining three actives in one base can replace a multi-step routine with a single prescriber-directed preparation.
Clinical Context
Topical cholestyramine has been described in the medical literature for skin irritation related to bile acids and anorectal surgery. Møller and colleagues reported improvement in severe perianal skin irritation following ileoanal anastomosis; case reports describe resolution of refractory infant buttocks rash and anal excoriation; and a randomized, double-blind, placebo-controlled trial evaluated cholestyramine ointment for postoperative pain after open hemorrhoidectomy. These reports describe cholestyramine on its own — not this specific three-drug combination. Miconazole and mupirocin are included when a prescriber judges that fungal and/or bacterial involvement should also be addressed. Strengths, combination, and use remain the prescriber's clinical decision.
Quality and Compliance
Mixwell Compounding Pharmacy prepares this topical in our purpose-built, USP 800 + 795-compliant labs to the prescriber's exact instructions, dispensed only with a valid prescription. Mixwell is a non-sterile pharmacy and does not prepare sterile products or injectables. Because mupirocin is an antibiotic, its use is directed by the prescriber as part of responsible antimicrobial use. Compounded medications are not reviewed or approved by the FDA. Nothing here promises a specific result, and compounded preparations are not presented as superior to commercially available products.
References
- Møller P, Lohmann M, Brynitz S. Cholestyramine ointment in the treatment of perianal skin irritation following ileoanal anastomosis. Dis Colon Rectum. 1987;30(2):106–107.
- White CM, Gailey RA, Lippe S. Cholestyramine ointment to treat buttocks rash and anal excoriation in an infant. Ann Pharmacother. 1996;30(9):954–956.
- Ala S, Eshghi F, Enayatifard R, Fazel P, Rezaei B, Hadianamrei R. Efficacy of cholestyramine ointment in reduction of postoperative pain and pain during defecation after open hemorrhoidectomy: a prospective, single-center, randomized, double-blind, placebo-controlled trial. World J Surg. 2013;37(3):657–662. doi:10.1007/s00268-012-1895-3.
- White CM, Kalus JS, Caron MF, Suski K. Cholestyramine ointment used on an infant for severe buttocks rash resistant to standard therapeutic modalities. J Pharm Technol. 2003;19(1):11–13. doi:10.1177/875512250301900104.
- Professional Compounding Centers of America (PCCA). Formulation science and compounding resources. https://www.pccarx.com/Blog/
