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Tavalisse Side Effects

Generic name: fostamatinib

Medically reviewed by Philip Thornton, DipPharm. Last updated on Mar 24, 2024.

Note: This document contains side effect information about fostamatinib. Some dosage forms listed on this page may not apply to the brand name Tavalisse.

Applies to fostamatinib: oral tablets.

Side effects include:

Adverse effects (≥5%) include diarrhea, hypertension, nausea, respiratory infection, dizziness, increases in ALT/AST, rash, abdominal pain, fatigue, chest pain, neutropenia.

For Healthcare Professionals

Applies to fostamatinib: oral tablet.


Common (1% to 10%): Neutropenia[Ref]


Very common (10% or more): ALT increased (11%)

Common (1% to 10%): AST increased[Ref]


Very common (10% or more): Respiratory infection (11%)[Ref]


Common (1% to 10%): Fatigue[Ref]

Nervous system

Very common (10% or more): Dizziness (11%)[Ref]


Very common (10% or more): Hypertension (28%)[Ref]


Common (1% to 10%): Rash (e.g., rash erythematous, rash macular)[Ref]


Very common (10% or more): Diarrhea (31%), nausea (19%)

Common (1% to 10%): Abdominal pain[Ref]


1. (2018) "Product Information. Tavalisse (fostamatinib)." Rigel Pharmaceuticals

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.