FamvirSide Effects - XML FEED - Medications.com http://www.medications.com/se/Famvir Recent side effects for Famvir my side effect was low white blood cell count. Thu, 21 Feb 2008 16:19:02 -0500 http://www.medications.com/effect/view/27369 my side effect was low white blood cell count. http://www.medications.com/effect/view/27369