What helps the effectiveness of Herceptin alone?

[oregon]

Hi,

When taking Herceptin without chemo... are you aware of any supplements/herbs that help with its effectiveness?

Diagnosed in December and due to a toxic reaction to chemo, my oncologist is placing my treatments on-hold, and in the interim I will have surgery. However she is keeping me on Herceptin, even though I'm currently not on chemo.

Thank you for your help.