Amoxicillin can be taken if the perianal abscess is caused by sensitive bacteria, and the medication needs to be used as prescribed by your doctor. Perianal abscess is an abscess around the rectum and anal canal. Commonly caused by the disease of the causative organisms are Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, anaerobic bacteria, Mycobacterium tuberculosis, but also a variety of pathogens mixed infection. Amoxicillin is an antibiotic used for infectious diseases caused by Streptococcus hemolyticus, Haemophilus influenzae, Streptococcus pneumoniae, Staphylococcus staphylococcus, Streptococcus chrysosporium, Enterococcus faecalis, Escherichia coli, and so on. Therefore the causative organisms that cause perianal abscesses can be treated with this product if they are sensitive to amoxicillin. Amoxicillin adverse reactions can be seen in diarrhea, nausea, rash, etc. The drug is contraindicated for those who are allergic to penicillin.