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.
Get medical help right away if you have any very serious side effects, including: faster/slower/more irregular heartbeat, severe dizziness, fainting. Amiodarone may rarely cause thyroid problems. Either low thyroid function or overactive thyroid function may occur.