Herceptin and Benedryl

Ok - so I got a little worried because of previous posts about Benedryl and Herceptin. So for my infusion today I opted out for both Benedyl and Decadron. All went well. Just confused about Benedryl as it is my sleep buddy sometimes. Doesn't seem that any of the drs. have heard of this????? ANy input?

Thanks ,
Olivia