AKT-2570

A 35-year-old man with a known diagnosis of ulcerative colitis presents with a 5 day history of worsening symptoms. He has been having six episodes of uncomfortable bloody stools per day which is an increase compared to his regular bowel habits. Observations in clinic are stable but he is concerned that oral mesalazine is not controlling his disease.

What would be an appropriate medication to add in order to gain better control of his symptoms?