title: Bile salts and their importance for drug absorption.
abstract: Bile salts are present in the intestines of humans as well as the animals used during the development of pharmaceutical products. This review provides a short introduction into the physical chemical properties of bile salts, a description of the bile concentration and composition of bile in different animal species and an overview of the literature investigating the influence of bile salts on the in vivo performance of different compounds and drug formulations. Generally, there is a positive effect on bioavailability when bile is present in the gastro-intestinal tract, independent of the formulation systems, e.g. suspensions, solutions, cyclodextrin complexes or lipid based formulations, but a few exceptions have also been reported.
authors.affiliation: Biologics and Pharmaceutical Science, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark. rhol@lundbeck.com
authors.forename: René
authors.initials: R
authors.lastname: Holm
authors.forename: Anette
authors.initials: A
authors.lastname: Müllertz
authors.forename: Huiling
authors.initials: H
authors.lastname: Mu
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001647:Bile Acids and Salts / Q000737:chemistry / Q000378:metabolism*; D006801:Humans; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000378:metabolism; D004364:Pharmaceutical Preparations / Q000008:administration & dosage / Q000378:metabolism*
chemical_list: D001647:Bile Acids and Salts; D004364:Pharmaceutical Preparations
keywords: Bile salts; Cyclodextrins; Drug delivery; Lipid based formulations