Should I be taking (Anti-histamine + Propranolol + Lamsil) with (Pepcid or Tagamet)?

Hi I'm, 22, 174cm tall and 65kg. Male and have Cholinergic Urticaria which is quite severe. I don't smoke. First three medications are for my skin and a yeast infection. The last two I wish to take when i go out drinking to combat my Asian Flush.

Is there anything I should be worried about or should I just not go drinking until I finish the Lamsil?