Hi, Carolyn - I'm an early riser so I usually take my Tarceva at around 5am. I wait an hour ( or bit over an hour ) and take the doxycycline along with the ondansatron. Then in about another hour I take my morphines, milk thistle and multi-vitamins. During the day I use a protein powder called Unjury along with flax seed meal and yogurt ( to replace what the doxycycline kills off ). I was told to take the Tarceva with water, but that it's OK to take a little food with the antibiotic if it helps with the nausea.
I'm using Eucerin for my skin and I always slather on the sunscreen even if I don't plan to be outside much - I burn much easier than I used to. And for the really dry skin I use Aquaphor Lotion or Cream. You can get it at any drugstore OTC.
Hope this helps!