Combinations - xanax (alprazolam) and propacet (acetominophen and propoxyphene): Safe to combine?

[Herbal Remedy]

swim has 2 propacets (as far as he knows they are propoxy, or darvocets). he knows these are pretty weak but he has no tolerance right now. Swim also has a bunch of those pentagon shaped xanax xr pills (the weakest as far as he knows). Swim was wondering if it would be ok to take the 2 propacets and crush up a xanax or 2 tonight, or if it would be a dangerous combination (everything taken orally)? Swim also likes to smoke some bud as well but doesnt think that will be of any concern, he just doesnt want to do anything that could be a risk healthwise. any replies would be greatly appreciated, peace....

edit: i apologize for all the reposts (not gold member behavior). Its been one of those days...