Linda the name of this antibiotic is DORYX...it is more for the skin.I was on Keflex before. I havesome sort of infection in my head...not exactly like sinus...crazy stuff...worries me...Keeps me awake and up most of the night. Now my stomach is all upset with this medicine so I stopped it today, trying to just mostly eat rice...and taking my previcid too to get over this painful bout of diverticulities. Just keep on doing what you are doing, please. prayer works,, and if you hear fromPaula let us know this is TOOLONG FOR HER. I love you all.. Estelle Marie (talking about famiy...how 'bout such a name on a tiny baby? Just thought I would share that tid bit! )