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.
1 Amiodarone is used to control the uneven beating of your heart also known as an arrhythmia. 2  It is an anti-arrhythmic drug.  It is used to help keep the heart beating normally in patients with serious disorders of their heart rhythm.