After taking amoxicillin, you may experience an adverse reaction of urine foam, which should be treated by a doctor. In addition, urine foam can not completely exclude the possibility of urinary tract diseases. Amoxicillin is a broad-spectrum antibiotic that is used clinically for infections caused by sensitive bacteria, such as Streptococcus pneumoniae, Streptococcus hemolyticus, Escherichia coli, and Staphylococcus. This drug can also be used in combination with other drugs to treat Helicobacter pylori infections. After the use of the drug, a very small number of patients may experience adverse reactions such as interstitial nephritis and crystalluria, which in turn lead to the symptoms of urine foam. This drug should be contraindicated in patients who are allergic to penicillin and have positive skin tests; and in those who have severe rapid-onset hypersensitivity reactions to other beta-lactam agents. It should be noted that before application, the relevant drug allergy history must be carefully inquired about; the occurrence of serious adverse reactions should be promptly discontinued to seek medical attention; pregnant women, lactating women and children, the elderly and other special groups, should be applied with caution. In addition, the appearance of urine foam, but also may be related to urinary tract infections, chronic nephritis and other diseases, should be taken seriously. The appearance of such symptoms after the use of the drug, you should seek medical advice to confirm the diagnosis. And follow the doctor’s instructions for treatment.