Filgrastim, sold under the brand name Neupogen among others, is a medication used to treat low blood neutrophils due to a number of causes. This includes when it occurs following chemotherapy, radiation poisoning, HIV/AIDS, or is of unknown cause.
Bradycardia and heart block occur in 1 to 3 percent of patients receiving amiodarone. 2 Amiodarone-induced proarrhythmia occurs at an annual rate of less than 1 percent.
Amiodarone is often used to treat both ventricular and atrial arrhythmias. Although its cardiac side effects are less frequent than those associated with other antiarrhythmics, it has potentially marked effects on thyroid physiology; it can cause both thyrotoxicosis and hypothyroidism.