What are the side effects of Duvelisib?

The most common side effects of Duvelisib (which may affect more than 2 in 10 people) are diarrhea or colitis (inflammation of the large intestine), neutropenia (low levels of neutrophils, a type of white blood cell), rash, fatigue, fever, cough, nausea (feeling sick), upper respiratory tract infection (infection of the nose and throat), pneumonia (infection of the lungs), musculoskeletal pain (pain in the muscles and bones), and anemia (low red blood cell count) The most common serious side effects were pneumonia, colitis, and diarrhea. If a patient's condition changes or serious side effects occur, the doctor may adjust the treatment plan, including stopping taking duvelised.