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CYCLODEXTRIN CONTAINING PRODUCTS Cyclodextrins are natural cyclic oligosaccharides that were discovered just over 100 years ago (A. Villiers. Sur la fermentation de la fécule par l'action du ferment butyriqué. C.R. Hebd. Seances Acad. Sci. 112 (1891) 536-538.), but only recently highly purified cyclodextrins became available as pharmaceutical excipients (see T. Loftsson and D. Duchêne, „Historical perspective. Cyclodextrins and their pharmaceutical applications”, Int. J. Pharm., 329, 1-11 (2007)). Worldwide about 30 different pharmaceutical products containing cyclodextrins are on the market (Table I). In the pharmaceutical industry cyclodextrins have mainly been used as complexing agents to increase aqueous solubility of poorly soluble drugs, and to increase their bioavailability and stability. In addition, cyclodextrins can for example be used to reduce gastrointestinal drug irritation, convert liquid drugs into microcrystalline or amorphous powder, and prevent drug-drug and drug-excipient interactions. A number of books and review articles have been published on the pharmaceutical applications of cyclodextrins. Table I. Cyclodextrin containing pharmaceutical products. Drug/Cyclodextrin PGE2/βCD Trade Name Prostarmon E PGE1/αCD Prostavastin OP-1206/αCD Opalmon Piroxicam/βCD Brexin, Flogene Cicladon Benexate HCl/βCD Iodine/βCD Dexamethasone/βCD Nitroglycerin/βCD Cefotiam-hexetil/αCD Cephalosporin (ME 1207)/βCD Tiaprofenic acid/βCD Diphenhydramin, Chlortheophyllin/βCD Chlordiazepoxide/βCD Hydrocortisone/HPβCD Solution Ointment Sublingual tablet Tablet Tablet Tablet Company/Country Ono, Japan Ono, Japan Schwarz, Germany, USA Ono, Japan Chiesi, Italy several European countries Aché, Brasil Teikoku, Japan Shionogi, Japan Kyushin, Japan Fujinaga, Japan Nihon Kayaku, Japan Takeda, Japan Meiji Seika, Japan Roussel-Maestrelli, Italy Stada-Travel Chewing tablet Stada, Germany Transillium Dexocort Tablet Solution Oral and i.v. olutions Suppository Tablets i.v. solution Sublingual tablets Eye drop solution Eye drop solution Nasal Spray Eye drop solution Tablet i.v. solution im solution Gador, Argentina Actavis, Iceland i.v. infusion Novartis, Switzerland i.v. solution Tablet and suppository Bracco, USA Medical Union Pharmaceuticals, Egypt Bristol-Myers Squibb, USA Otsuka Pharm. Co., Japan Ulgut Lonmiel Mena-Gargle Glymesason Nitropen Pansporin T Meiact Surgamyl Itraconazole/HPβCD Sporanox Cisapride /HPβCD Nimesulide/βCD Alprostadil/αCD Nicotine/βCD Chloramphenicol/MβCD Diclofenac-Na/HPγCD 17β-Estradiol/RMβCD Indomethacin/HPβCD Omeprazol/βCD Voriconazole/SBEβCD Ziprasidone mesylate/ SBEβCD Dextromethorphan/βCD Cetirzine/βCD Tc-99 Teoboroxime/HPγCD Propulsid Nimedex Rigidur Nicorette Clorocil Voltaren Aerodiol Indocid Omebeta Vfend Geodon, Zeldox Rynathisol Cetrizin MitoExtra Mitozytrex Cardiotec Meloxicam Mobitil Aripiprazole/SBEβCD Abilify Mitomycin/HPβCD Formulation Sublingual tablet i.v. solutions and infusions Tablet Tablet Suppository Liquid Capsule im solution Janssen, Belgium and USA Janssen, Belgium Novartis and others, Europe Ferring, Denmark Pharmacia, Sweden Oftalder, Portugal Novartis, France Servier, France Chauvin, France Betafarm, Germany Pfizer, USA Pfizer, USA & Europe Synthelabo, Italy Losan Pharma, Germany αCD: the natural α-cyclodextrin; βCD: the natural β-cyclodextrin; γCD: the natural γ-cyclodextrin; HPβCD: 2-hydroxypropyl-β-cyclodextrin (Kleptose HPB) from Roquette (France); MβCD: methylated β-cyclodextrin RMβCD: randomly methylated β-cyclodextrin from Wacker-Chemie GmbH (Germany); SBEβCD: sulfobutylether βcyclodextrin (Captisol™) from CyDex Inc. (USA); HPβCD: 2-hydroxypropyl-β-cyclodextrin from Wacker-Chemie GmbH (Germany)