The chemo delivered in T-DM1 is very toxic. This article explains it.
http://www.usatoday.com/news/health/...pOY92Eo.mailto
So I guess a few have lucked out with only a few minor side effects---good for them! And then there is the rest of us. I am into day 4 and feeling better but still in bed. I do think the pain in my shoulder is down. Hope it is the drug working and not my imagination.