28th February 2024

A 55-year-old man presents to his GP with symptoms of increased urinary frequency, associated with stinging and burning sensation when passing urine.

A 55-year-old man presents to his GP with symptoms of increased urinary frequency, associated with stinging and burning sensation when passing urine. His past medical history includes rheumatoid arthritis, for which he takes methotrexate with folic acid cover, and diabetes that is diet-controlled. His urine dip is positive for nitrites and leucocytes, and the GP prescribes some antibiotics. He tells the GP that the last time he was given Amoxicillin for a sore throat he developed a red itchy rash  on his body a few days later.

Which of the following antibiotics should be avoided in this scenario?