Are your meds in liquid form? I'm taking azithromycin and it's in a pill form. I can't eat anything because I have no appetite. I tried eating last night and felt full right away.
That stuff works fantastic for me, and I've got a bit of an antibiotic quandry at times (amoxicillan wrecks my stomach).
My own protips for antibiotics --
never on an empty stomach
if it says twice a day, get it in you 12 hours apart or as close as possible
finish ALL OF IT NO MATTER WHAT
eat yogurt - the antibiotic will kill some of the good bacteria in your stomach. yogurt helps keep it replenished while you're on the antibiotics
if you're.. uh... bound up, eat fiber and avoid everything i'm about to list under the next tip -
if you'r NOT bound up, eat the BRAT diet -- bananas, rice, applesauce, and toast. these help to firm stuff back up... yeah
drink lots of WATER, not just "fluids"... the more your stomach hurts, the more you should be thinking "I need water"
from a mom and chronic antibiotic user. and if the zithromax/azithromycin doesn't do it, ask for omnicef/cefdinir. Friggin expensive compared to amox/zithro but worth it if the others fail. Its what I get almost always now cuz i'm tolerant to too many others now.