Should I be concerned about heart arrhythmia's with slight weakness and fatigue?

Probably. If your weakness and fatigue are simultaneous with your arrhythmia they are most likely related and you need to be evaluated as many arrhythmias can be cured and or treated.

Related Questions

Is it true that vitamin C can help reduce the risk of a serious heart arrhythmia?

No. Vitamin c is not known to prevent heart rhythm problems. It may be beneficial as an antioxidant which may reduce artery inflammation and decrease the risk of athersclerosis. On the other had magnesium and potassium deficiencies may lead to heart dysrhythmias. However these supplements should only be used under a doctors supervision and monitoring of blood levels. Read more...