Prescription
Osmotic diuretic
Mannitol
Last reviewed April 2026
Who is this for?
What is this drug?
Mannitol is a type of sugar solution given through a drip (IV) that works by pulling excess water out of swollen tissues, especially the brain and eyes, and flushing it out through your kidneys as urine.
What is it used for?
Brain swelling (raised pressure in the head)eye pressure (glaucoma)kidney failure (to help restart urine flow)swelling from injuries
Prescription Required
A doctor's prescription is required to obtain this drug legally.