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AMIRAVOResearch Library
Cycle-length evidence

Methylene Blue cycle length: what human studies ran

FDA-approvedAHuman trial evidence
Short answer: Methylene Blue has no "cycle". As an approved drug it is used as its label and a prescriber direct.

Treatment and follow-up in human studies

  1. Label: one dose, with at most one repeat dose one hour later; consider alternatives if not resolved after 2 doses 1.
  2. Septic shock trial: once daily for 3 days 5.

What has not been tested

  • On-and-off schedules or breaks between courses.
  • Repeated courses and long-term exposure beyond the periods listed.
  • Methylene Blue combined with other compounds, unless a study above says so.

Frequently asked questions

Is there an established Methylene Blue cycle length?
No cycle is defined. Methylene Blue is an approved drug whose label describes treatment under a prescriber's care; the label, not a cycle, governs duration.
What is the longest human study of Methylene Blue?
The durations are listed on this page with their sources; compare them directly rather than relying on a summary.
Do study durations tell me how long to use something?
No. A study duration is how long investigators administered a compound to selected participants under monitoring. It is not a recommended course, and a break between courses has not been tested for any compound on this site that is not approved.
Methylene Blue dosing reference Full research page

References

  1. PROVAYBLUE (methylene blue) injection, USP, for intravenous use. Prescribing information, American Regent / Provepharm (SPL published June 12, 2025) DailyMed (FDA label). 2025
  2. Drugs@FDA application record for PROVAYBLUE (methylene blue), NDA 204630, original approval 8 April 2016 openFDA / Drugs@FDA. 2026
  3. Multimodal Randomized Functional MR Imaging of the Effects of Methylene Blue in the Human Brain Radiology. 2016
  4. Early adjunctive methylene blue in patients with septic shock: a randomized controlled trial Crit Care. 2023
  5. Methylene Blue in Early Septic Shock (SHOCKEM-Blue, NCT04446871) ClinicalTrials.gov. 2021
  6. PubChem compound record for methylene blue (CID 6099; CAS 61-73-4) PubChem. 2026
  7. International Standard: Prohibited List 2026 World Anti-Doping Agency. 2026