Hi,
I had weekly herceptin while I was on Taxol - so that would
have been once/week for 12 weeks. My onc said it was to
see how I tolerated it. Then I had a muga that was OK and
he switched me to once every three weeks (for convenience
I assumed). I know I received increased amounts toward
the end of the treatments because my weight had increased
significantly
Hope this helps somewhat.