Please consult with your doctor on supplementation, particularly if in treatment.
This link may help
http://www.her2support.org/vbulletin...ighlight=Coq10
as may this one
http://www.her2support.org/vbulletin...ght=greek+diet
I am sure there are lots of suppliers but these are effective and competitive.
http://www.vitacost.com/
RB