What do you suggest if my grandmother has accidently taken three dasatinib tablets for her leukemia instead of two and is worried. Does anyone know what she should do?

CALL ONCOLOGIST. First of all call to inform her oncologist and get his opinion. Dasatinib (sprycel) dose is usually 100 mg daily, so I assume she has 50 mg tablets and was taking 2. It would be appropriate to hold tomorrow's dose and then resume treatment. Call her oncologist. .