Women with cystitis can take amoxicillin, but if the cystitis is caused by drug-resistant bacterial infections taking amoxicillin may not be useful, so before choosing antibiotics you must clarify the type of pathogenic microorganisms and drug sensitivity through urine routine and urine culture before choosing drugs. If it is just common bacteria, choose amoxicillin tablets for 1-2 weeks for oral treatment, and the cystitis will basically be good. If it is caused by drug-resistant bacteria, you need to choose sensitive antibiotics, such as furantoin tablets, sulfadoxine-pyrimethamine tablets, cefuroxime tablets for at least two weeks to clear the drug-resistant bacteria before the cystitis can be well. If the cystitis is caused by mycoplasma or chlamydia infection, you need to choose antibiotics like memantin capsules and doxycycline tablets for at least 2-3 weeks to treat the inflammation of the bladder to get well. If the bladder infection is caused by fungus or trichomonas, you need to treat for fungus and trichomonas for the inflammation of the bladder to heal.