Precautions. Drug information provided by: IBM Micromedex. Your doctor will check the progress of you or your child while you are using this medicine. Contact your veterinarian immediately if your pet develops severe or bloody diarrhea. Give all of the amoxicillin that is prescribed for your pet. You should not use this medicine if you have severe kidney disease, if you have had liver problems or jaundice while taking amoxicillin and clavulanate potassium, or if you are allergic to any penicillin or cephalosporin antibiotic, such as Amoxil, Ceftin, Cefzil, Moxatag, Omnicef, and others. Amoxicillin is an antibiotic related to penicillin and is used to treat a variety of bacterial infections. Most people will have taken amoxicillin or penicillin at least once in their life since it is used for everything from urinary tract to ear infections. Amoxicillin is used to treat bacterial infections such as E. coli infection, pneumonia, gonorrhea, bladder infection, and ear infection. It belongs to a class of antibiotics called penicillins, which work by stopping the multiplication of bacteria. Make sure that you drink plenty of fluids, water and juices and soups, but avoid milk products until you are well again. It is important to drink plenty of fluids so as not to get dehydrated by having the diarrhea and vomiting. User Reviews for Amoxicillin / clavulanate to treat Bronchitis. Also known as: Augmentin, Augmentin ES-600, Augmentin XR. The following information is NOT intended to endorse drugs or recommend therapy. Some drugs may affect the way amoxicillin works, and amoxicillin may affect other drugs you are taking, causing problems. It's very important to let your doctor know about all drugs you are taking. So About 3 weeks ago I had strep throat and they prescribved me Amoxicillin 5 days into the 10 day course I broke out in a small rash on my stomach and back. You’ve probably heard that when kids take antibiotics, they may experience side effects like diarrhea. But some antibiotics, such as amoxicillin, can lead to a rash.