Hypersensitivity to amiodarone HCl or to any of the excipients of Rythma.
Sinus bradycardia (<55 pulse bpm) and sinoatrial heart block.
All forms of delayed conduction (sino-auricular and nodal conduction delay) including sick sinus syndrome or sinus node disease (except when amiodarone is used in conjunction with a pacemaker), AV-blocks of 2nd and 3rd degrees as well as bi-fascicular and tri-fascicular blocks if no pacemaker is used. In such circumstances, amiodarone IV may be used in a special care unit and institute electrosystolic pacing.
Concomitant treatment with medicinal products inducing torsades de pointes (see Interactions).
Tablet: Preexisting QT prolongation; hypokalemia.
Concomitant treatment with monoamine oxidase (MAO) inhibitors.
Concurrent use of simvastatin at a daily dose >20 mg.
Injection: Evidence or history of thyroid dysfunction. Thyroid function tests should be performed in all patients prior to amiodarone therapy.
Circulatory collapse, severe arterial hypotension.
Use in Pregnancy & Lactation: Pregnancy Category D: Amiodarone is contraindicated during pregnancy because there have been reports of neonatal hypo- or hyperthyroidism from amiodarone use.
Amiodarone is excreted in breastmilk in significant quantities and is therefore contraindicated in breastfeeding.