Is keflex better than augmentin (amoxicillin and clavulanate). have a kidney infection since monday still very sore so doc changed tablets today to keflex. i'm 23 weeks pregnant.

Treating Infection: Absolutely not. Antibiotics are not 'better' or 'worse' than other antibiotics. They are more or less effective. Your physician changed your antibiotic because they probably have a culture report that tells them that the first antibiotic, which is very common, would not work against the bug causing your infection.

The best: Antibiotis is determined by a urine culture where the bacteria are grown out and tested against antibioitcs for resistance.

Depends: Culture and sensitivity of urine will tell. That should have been done. During pregnancy there is limitations what can be given....