Official IDARI clinical guidelines for Amoxil (Amoxicillin) administration. Review standard dosage protocols for 500mg and 875mg tablets, capsules, and patient safety data. Amoxicillin is an antibiotic medication belonging to the aminopenicillin class of the penicillin family. The drug is used to treat bacterial infections [9] such as middle ear infection, strep throat, pneumonia, skin infections, odontogenic infections, and urinary tract infections. [9] It is taken orally (swallowed by mouth), or less commonly by either intramuscular injection or by an IV bolus. Amoxil (Amoxicillin) dosage and safety information for 125mg-875mg. Ear infections, strep throat, side effects and prescription information. Learn about the side effects of amoxicillin, from common to rare, for consumers and healthcare professionals. Rash, diarrhea, and headache are common amoxicillin side effects. Learn how long side effects of amoxicillin last and how to avoid them. Learn about side effects, dosage, uses, and more for amoxicillin, a prescription drug that treats bacterial infections in adults and children. Amoxicillin may cause diarrhea, and in some cases it can be severe. It may occur 2 months or more after you stop taking this medicine. Do not take any medicine or give medicine to your child to treat diarrhea without first checking with your doctor. Diarrhea medicines may make the diarrhea worse or make it last longer. Amoxicillin also is sometimes used to treat Lyme disease, to prevent anthrax infection after exposure, and to treat anthrax infection of the skin. Talk with your doctor about the possible risks of using this medication for your condition. This medication may be prescribed for other uses; ask your doctor or pharmacist for more information. Find patient medical information for Amoxicillin (Amoxil and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Amoxicillin is a penicillin antibiotic that fights bacteria. It is used to treat many types of infections such as tonsillitis, bronchitis, pneumonia, and others.