A random comment for those of us who have been on a lot on antibiotics for bronchiectasis....my first and wisest PCP suggested I take an allergy tablet with each dose of antibiotic. If your body is on the verge of showing allergy, allegra might halt it. Sometimes that means taking two 24-hour tablets in one day. Even though the allegra bottle says 1x/day both PCP and allergist said 2x/day acceptable.