Does lasix (furosemide) increase the wbc count?

No unless eosinophil: Lasix (furosemide, a diuretic that helps eliminate fluid from the bloodstream), has been reported to raise the eosinophil count (eosinophils are a type of white blood cell [wbc] high in allergy, fungal/parasite infections). A very high eosinophil count may raise the total WBC count, but not very likely. Typically, we monitor for a low WBC count as a side effect of furosemide.