Guategirl,
I'd be very careful about the expired pills. First, you don't know where they've come from?
Second, you don't know what filler it has? Third, you don't know that they've been compounded properly? Fourth , you can't verify dosage?
I've written alot about transdermal, because it worked for me. There are others on this forum who take oral LDN, and it works for them. I always caution them as to filler. There are some fillers which are problematic: slow release should not be used, lactose filler is a problem for those who are lactose intolerant, avicel filler has created some bad reactions (i had that). I usually recommend sucrose which is a hypo-allergenic filler.
Let me know what you decide to do.