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Duvelisib Side Effects

Medically reviewed by Last updated on Jul 1, 2023.

Applies to duvelisib: oral capsule.


Oral route (Capsule)

Warning: Fatal and Serious Toxicities: Infections, Diarrhea, or Colitis, Cutaneous Reactions, and PneumonitisFatal and/or serious infections occurred in 31% of duvelisib-treated patients. Monitor for signs and symptoms of infection. Withhold duvelisib if infection is suspected. Fatal and/or serious diarrhea or colitis occurred in 18% of duvelisib-treated patients. Monitor for the development of severe diarrhea or colitis. Withhold duvelisib. Fatal and/or serious cutaneous reactions occurred in 5% of duvelisib-treated patients. Withhold duvelisib. Fatal and/or serious pneumonitis occurred in 5% of duvelisib-treated patients. Monitor for pulmonary symptoms and interstitial infiltrates. Withhold duvelisib.

Serious side effects of Duvelisib

Along with its needed effects, duvelisib may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking duvelisib:

More common

Other side effects of Duvelisib

Some side effects of duvelisib may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

For Healthcare Professionals

Applies to duvelisib: oral capsule.


Very common (10% or more): Neutropenia (63%), thrombocytopenia (39%), anemia (45%), lymphocytosis (30%), leukopenia (29%), lymphopenia (21%)[Ref]


Very common (10% or more): Infection/sepsis (31%)[Ref]


Very common (10% or more): Musculoskeletal pain (20%), arthralgia (10%)[Ref]


Very common (10% or more): Lipase increased (36%), hypophosphatemia (31%), ALP increased (29%), serum amylase increased (28), hyponatremia (27%), hyperkalemia (J26%), hypoalbuminemia (25%), creatinine increased (24%), hypocalcemia (23%), decreased appetite (14%), edema (14%), hypokalemia (10%)[Ref]


aminotransferase increased, aspartate aminotransferase increased, transaminases increased, hypertransaminasemia, hepatocellular injury, hepatotoxicity) (15%)[Ref]


Very common (10% or more): Cough (25%), dyspnea (12%)

Common (1% to 10%): Pneumocystis jirovecii pneumonia (PJP), cytomegalovirus (CMV) reactivation/infection[Ref]


Very common (10% or more): Fatigue (29%), pyrexia (26%)[Ref]


The most common adverse reactions (reported in 20% or more of patients) were diarrhea or colitis, neutropenia, rash, fatigue, pyrexia, cough, nausea, upper respiratory infection, pneumonia, musculoskeletal pain, and anemia.[Ref]

Nervous system

Very common (10% or more): Headache (12%)[Ref]


Very common (10% or more): Upper respiratory tract infection (21%), pneumonia (21%), lower respiratory tract infection (10%)[Ref]


Very common (10% or more): Rash (e.g., dermatitis [including allergic, exfoliative, perivascular], erythema [including multiforme], rash [including exfoliative, erythematous, follicular, generalized, macular/papular, pruritic, pustular], toxic epidermal necrolysis, toxic skin eruption, drug reaction with eosinophilia and systemic symptoms, drug eruption, Stevens-Johnson syndrome)

Common (1% to 10%): Cutaneous reactions

Frequency not reported: Drug reaction with eosinophilia and systemic symptoms (DRESS), toxic epidermal necrolysis (TEN)[Ref]


Very common (10% or more): Diarrhea/colitis (includes colitis, enterocolitis, colitis microscopic, colitis ulcerative, diarrhea, diarrhea hemorrhagic) (50%), nausea (24%), abdominal pain (18%), vomiting (16%), mucositis (14%), constipation (13%)[Ref]

Frequently asked questions


1. (2018) "Product Information. Copiktra (duvelisib)." Verastem, Inc.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.