How the interaction occurs:
Amiodarone and dronedarone may decrease the ability of your liver to remove some beta-blockers.
What might happen:
The levels of your beta-blocker in your body may cause your blood pressure to decrease too much. Symptoms of low blood pressure include: dizziness, weakness, irregular heartbeat, nausea, drowsiness, confusion, and slurred speech.
What you should do about this interaction:
Let your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together. Your doctor may want to change the dose of your beta-blocker or change you to a different beta-blocker. Let your doctor know right away if you develop dizziness, weakness, blurred vision, or low blood pressure.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.
1.Leor J, Levartowsky D, Sharon C, Farfel Z. Amiodarone and beta-adrenergic blockers: an interaction with metoprolol but not with atenolol. Am Heart J 1988 Jul;116(1 Pt 1):206-7.
2.Multaq (dronedarone) US prescribing information. Sanofi-Aventis U.S. LLC January, 2014.
3.Derrida JP, Ollagnier J, Benaim R, Haiat R, Chiche P. Amiodarone and propanolol: a dangerous combination?. Nouv Presse Med 1979 Apr 14; 8(17):1429.
4.Fukumoto K, Kobayashi T, Komamura K, Kamakura S, Kitakaze M, Ueno K. Stereoselective effect of amiodarone on the pharmacokinetics of racemic carvedilol. Drug Metab Pharmacokinet 2005 Dec;20(6):423-7.
5.Nagele H, Bohlmann M, Eck U, Petersen B, Rodiger W. Combination therapy with carvedilol and amiodarone in patients with severe heart failure. Eur J Heart Fail 2000 Mar;2(1):71-9.
6.Macdonald PS, Keogh AM, Aboyoun C, Lund M, Amor R, McCaffrey D. Impact of concurrent amiodarone treatment on the tolerability and efficacy of carvedilol in patients with chronic heart failure. Heart 1999 Nov; 82(5):589-93.
7.Krum H, Shusterman N, MacMahon S, Sharpe N. Efficacy and safety of carvedilol in patients with chronic heart failure receiving concomitant amiodarone therapy. Australia/New Zealand Heart Failure Research Collaborative Group. J Card Fail 1998 Dec;4(4):281-8.