. . "Because of presystemic first pass metabolism the absolute bioavailability of dronedarone without food is low, about 4%. It increases to approximately 15% when dronedarone is administered with a high fat meal. After oral administration in fed conditions, peak plasma concentrations of dronedarone and the main circulating active metabolite (N-debutyl metabolite) are reached within 3 to 6 hours. After repeated administration of 400 mg twice daily, steady state is reached within 4 to 8 days of treatment. The steady state Cmax and exposure of the main N-debutyl metabolite is similar to that of the parent compound. "@en . . . "N-(2-Butyl-3-(4-(3-(dibutylamino)propoxy)benzoyl)-5-benzofuranyl)-methanesulfonamide"@en . . . . . "Humans and other mammals"@en . . . "Most common adverse reactions (\u22652%) are diarrhea, nausea, abdominal pain, vomiting, and asthenia. "@en . . . "Elimination half-life: 13-19 hours "@en . . . . . . . . . "When intravenously administered, the volume of distribution is 1400 L. "@en . . . "SR 33589"@en . . . . . . . . . "141626-36-0"@en . . . "SR 33589b"@en . . . . "Arie Gutman, Gennadi Nisnevich, Lev Yudovitch, \"Process for the preparation of dronedarone.\" U.S. Patent US20050049302, issued March 03, 2005."@en . . "Dronedarone is a sinus rhythm controller for management of paroxysmal or persistent atrial fibrillation. Classified as a Class III antiarrhythmic but displays properties of all four Vaughan-Williams classes, dronedarone blocks a multitude of channels (sodium, potassium, calcium), and demonstrates antiadrenergic properties. Chemically, it is a benzofuran derivative. FDA approved on July 1, 2009. "@en . "Dronedarone and its N-debutyl metabolite is >98% protein bound - mainly to albumin. "@en . " "@en . "N-(2-Butyl-3-(P-(3-(dibutylamino)propoxy)benzoyl)-5-benzofuranyl)methanesulfonamide"@en . "The antiarrhythmic effect of dronedarone may be due to at least two major actions. It prolongs the duration of action potential and refractory period in myocardial tissue via inhibition of sodium and potassium channels. Via inhibition of calcium channels and blockage of beta1-adrenergic receptors, a decrease in AV conduction and sinus node function can be observed. Dronedarone can also cause an increase in blood pressure by inhibition of alpha1-adrenergic receptors. "@en . . . "Dronedarone"@en . "Plasma clearance = 130-150 L/h. "@en . "Do not take dronedarone with grapefruit juice. Grapefruit juice is a potent CYP3A4 inhibitor which will increase serum concentrations of dronedarone threefold"@en . "Absorption of dronedarone increases 3-fold if taken with food especially if meal is high in fat content "@en . . . " "@en . . "Multaq"@en . . . "6% of the dose was excreted in the urine, mainly as metabolites (no unchanged compound excreted in urine), and 84% was excreted in feces, mainly as metabolites."@en . . . . "approved"@en . "Management of paroxysmal or persistent atrial fibrillation via restoration of normal sinus rhythm. "@en . . . "# Dale KM, White CM: Dronedarone: an amiodarone analog for the treatment of atrial fibrillation and atrial flutter. Ann Pharmacother. 2007 Apr;41(4):599-605. Epub 2007 Mar 27. \"Pubmed\":http://www.ncbi.nlm.nih.gov/pubmed/17389667 # Iwamoto T, Watanabe Y, Kita S, Blaustein MP: Na+/Ca2+ exchange inhibitors: a new class of calcium regulators. Cardiovasc Hematol Disord Drug Targets. 2007 Sep;7(3):188-98. \"Pubmed\":http://www.ncbi.nlm.nih.gov/pubmed/17896959 # Celestino D, Medei E, Moro S, Elizari MV, Sicouri S: Acute in vitro effects of dronedarone, an iodine-free derivative, and amiodarone, on the rabbit sinoatrial node automaticity: a comparative study. J Cardiovasc Pharmacol Ther. 2007 Sep;12(3):248-57. \"Pubmed\":http://www.ncbi.nlm.nih.gov/pubmed/17875953 # Pamukcu B, Lip GY: Dronedarone as a new treatment option for atrial fibrillation patients: pharmacokinetics, pharmacodynamics and clinical practice. Expert Opin Pharmacother. 2011 Jan;12(1):131-40. doi: 10.1517/14656566.2011.540800. Epub 2010 Dec 2. \"Pubmed\":http://www.ncbi.nlm.nih.gov/pubmed/21126199 # De Ferrari GM, Dusi V: Drug safety evaluation of dronedarone in atrial fibrillation. Expert Opin Drug Saf. 2012 Nov;11(6):1023-45. doi: 10.1517/14740338.2012.722994. Epub 2012 Sep 13. \"Pubmed\":http://www.ncbi.nlm.nih.gov/pubmed/22971242"@en . .