title: The Lidose hard capsule formulation of fenofibrate is suprabioavailable compared to the nanoparticle tablet formulation under high-fat fed conditions.
abstract: OBJECTIVE
  The therapeutic equivalence of multiple registered fenofibrate formulations, several of which are suprabioavailable and therefore marketed at lower dosage strengths than their reference products, is based on the results of bioequivalence studies. Most of these formulations show a higher bioavailability when taken with a high-fat meal. The relative bioavailability of two of these formulations, the 200 mg Lidose hard capsules and the 145 mg nanoparticle tablets, was assessed when taken with a high-fat meal.
  
  
  METHODS
  In this single dose, 2-way, randomized, crossover study, 24 healthy subjects received a 200 mg fenofibrate Lidose hard capsule (Test) and a 145 mg nanoparticle tablet (Reference) under high-fat fed conditions. Plasma concentrations of fenofibric acid were measured up to 72 hours by using a validated LC-MS/MS method.
  
  
  RESULTS
  The geometric mean ratios (Test/Reference) and the 90% confidence intervals for AUC0-t and Cmax were 1.37 (131.58 - 142.88) and 1.38 (124.60 - 152.93), respectively. The median (range) Tmax- values of fenofibric acid were 4.5 h (3.0 - 8.0 h) and 3.25 h (1.0 - 6.5 h) after administration of the Lidose hard capsule and the nanoparticle tablet, respectively.
  
  
  CONCLUSIONS
  Under high-fat fed conditions the extent of fenofibrate absorption was 37% higher for the 200 mg Lidose hard capsule compared to the 145 mg nanoparticle tablet, which is exactly as expected based on a mg-to-mg weight basis. The results of the present study underline the importance of assessing bioequivalence of fenofibrate formulations under identical fed conditions, and preferentially after a high-fat meal as this condition represents the worst-case scenario. Furthermore, the results of this study demonstrate that the 145 mg nanoparticle tablet is not bioequivalent to the 200 mg Lidose hard capsule when administered under high-fat meal conditions.
authors: Louvain Drug research Institute Catholic University of Louvain Brussels.
authors: Roger K
authors: RK
authors: Verbeeck
authors: Sophie
authors: S
authors: De Niet
authors: Sonia
authors: S
authors: Lebrun
authors: Mickael
authors: M
authors: Tremege
authors: Tim W
authors: TW
authors: Rennie
authors: Monte
authors: M
authors: Coffiner
authors: Bruno
authors: B
authors: Streel
authors: Bernard
authors: B
authors: Cahay
mesh_terms: D000293:Adolescent; D000328:Adult; D019540:Area Under Curve; D001682:Biological Availability; D002214:Capsules; D002853:Chromatography, Liquid / Q000379:methods; D018592:Cross-Over Studies; D004041:Dietary Fats / Q000008:administration & dosage*; D005260:Female; D011345:Fenofibrate / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000493:pharmacokinetics; D006801:Humans; D000960:Hypolipidemic Agents / Q000008:administration & dosage / Q000493:pharmacokinetics*; D008297:Male; D053758:Nanoparticles; D013607:Tablets; D053719:Tandem Mass Spectrometry / Q000379:methods; D013810:Therapeutic Equivalency; D055815:Young Adult
chemical_list: D002214:Capsules; D004041:Dietary Fats; D000960:Hypolipidemic Agents; D013607:Tablets; C006012:fenofibric acid; D011345:Fenofibrate