Bobbi,
I forgot to mention in my previous reply one post by
AlaskaAngel at
http://www.her2support.org/vbulletin...ad.php?t=23846
which reports one possible cause of fatigue in cancer patients due to an immune response. There may be some future proven remedies to counteract this effect.
Some supplements such as omega-3 fish oil, CoQ10, vitamin D, L-glutamine etc..may provide some help. But each cancer case being different it is advisable to get the opinion of the caregiver before going on supplementation to avoid detrimental interactions with the main treatment regimen.