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Mannitol
Pronounced MAN-i-tol
Brand names: Osmitrol
Type: Osmotic diuretic (water pill) · All Heart & Blood Pressure Medicines
What Mannitol is used for
- Reducing pressure in the brain after injury (hospital)
- Reducing pressure in the eye (hospital)
- Protecting the kidneys in some hospital situations
◆ Kidney note
Works by drawing water through the kidneys; avoided when the kidneys have completely stopped working.
Common side effects
- Headache
- Nausea
- Frequent urination
- Dizziness
Important cautions
- Used in hospital settings; it can shift fluids and salts quickly, so close monitoring is needed
How it comes
Injection (hospital). This guide lists forms only — it never lists strengths or doses.
Related medicines — Heart & Blood Pressure Medicines
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.