I went through the ABVD as well as MOPP treatments for Hodgkins 26 years ago, my white blood count bottomed out at one point to 500. spent 10 days in the hospital sucking on antibiotics. As far as this seaweed, this is a new one for me. But there is something new every week popping up that is supposed to cure us, or keep cancer from coming back, or coming at all. Maybe someone else has used it.
Hope you're doing well.

Just read: Fucoidan found in kombu and wakame seaweed stimulate immune cells.
book title "Anti cancer A new way of Life", by David Servan-Schreiber, MD, PhD

I take fucoidan capsules everyday with many other supplements. It is suppose to be an immune booster. also check into Astragalus this supplement is recommend to take during treatments.
http://www.naturalnews.com/042240_astragalus_immune_boosting_power_adaptogenic_herbs.html

But always check with your Dr. I started taking all these supplements after treatment. Stay Strong.