I was on Doxy for 9 months. I remember trying to fit those pills into my daily pill-o-rama. Not fun.
I took mine with jelly toast. One piece of toast, wait 10 minutes, take a Doxy, wait 10 more minutes, then the next piece of toast. Then cross my fingers.
It was a pain in the rear. A few times I puked my guts up. blech.
You'll do fine. After a few weeks, I didn't have any tummy troubles at all.
Peace and health to you,