Typical dosage for Methylene Blue
The typical dose is 1 mg/kg of body weight injected through the veins (IV) over 5 to 30 minutes.
If your methemoglobin level stays above 30%, or you still have methemoglobinemia symptoms (e.g., shortness of breath, fast heart rate, weakness), your care team will consider repeating the dose after an hour, as long as you don't have kidney problems.
Other Methylene Blue articles
Why trust our experts?

Reviewed by:
Robert Chad Hakim, PharmD, BCCCPRobert Chad Hakim, PharmD, BCCCP, started his full-time career as a clinical pharmacist at UCLA Health in the general medicine, general cardiology, and ICU units after completing residency in 2016. He also was the preceptor for the general medicine rotation from 2017 to 2021, which was a required rotation for all pharmacy residents.

Reviewed by:
Allison Gourley, PharmDAllison Gourley, PharmD, is a kidney and pancreas transplant pharmacist at a teaching hospital in the San Francisco Bay Area. When she’s not educating patients about their immunosuppressants, she's actively involved in transplant research.
