Methylene Blue Reconstitution Calculator
Enter the amount you want to measure. The vial buttons will highlight which vial strengths create cleaner syringe-unit measurements.
What amount do you need?
Type the target amount, then choose mg or mcg. Example: 2mg or 500mcg.
Syringe size:
Possible vial strengths:
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Example Methylene Blue Titration Schedule
FDA-Approved Medical Use & Official Dosage
Methylene blue is a prescription drug approved for acquired methemoglobinemia, a serious blood disorder where hemoglobin can't carry oxygen effectively.
Parameter Official Prescribing Information for Provayblue® Injection
Standard Dose 1 mg/kg via intravenous (IV) infusion over 5 to 30 minutes.
Repeat Dose If methemoglobin levels remain above 30% or symptoms persist, a second dose of 1 mg/kg may be given one hour after the first.
Renal Impairment In patients with moderate or severe kidney issues, a single dose of 1 mg/kg is recommended.
Pediatric Use The dosage is weight-based. For the 1% solution, it's 0.1 to 0.2 mL/kg; for the 0.5% solution, it's 1 mg/kg.
Route Intravenous (IV) only for the approved injection; oral use is off-label and not FDA-approved.
Onset of Action Symptomatic improvement typically begins within one hour after administration.
Methylene blue is a prescription drug approved for acquired methemoglobinemia, a serious blood disorder where hemoglobin can't carry oxygen effectively.
Parameter Official Prescribing Information for Provayblue® Injection
Standard Dose 1 mg/kg via intravenous (IV) infusion over 5 to 30 minutes.
Repeat Dose If methemoglobin levels remain above 30% or symptoms persist, a second dose of 1 mg/kg may be given one hour after the first.
Renal Impairment In patients with moderate or severe kidney issues, a single dose of 1 mg/kg is recommended.
Pediatric Use The dosage is weight-based. For the 1% solution, it's 0.1 to 0.2 mL/kg; for the 0.5% solution, it's 1 mg/kg.
Route Intravenous (IV) only for the approved injection; oral use is off-label and not FDA-approved.
Onset of Action Symptomatic improvement typically begins within one hour after administration.
Possible vial strengths:
What Is It?
Methylene Blue
Phenothiazine compound studied for mitochondrial function.
Bacteriostatic Water
Sterile water containing a bacteriostatic preservative, commonly used when preparing multi-use research vials.
How To Mix Methylene Blue
1
CleanUse alcohol swabs to clean the tops of both vials.
2
Draw BAC WaterDraw the selected amount of bacteriostatic water.
3
Inject SlowlyAdd the liquid slowly down the side of the vial.
4
Swirl GentlyDo not shake. Swirl gently until dissolved.
5
Store ProperlyStore as directed and protect from heat and light.
Best Practices & Common Mistakes
Best Practices
- Use sterile technique.
- Protect from light and heat.
- Store refrigerated when appropriate.
- Use clean syringe-unit math before measuring.
Common Mistakes
- Confusing milligrams with milliliters.
- Choosing an option with awkward decimal units.
- Using too little liquid for very small measurements.
- Shaking the vial aggressively.
Methylene Blue Storage & Handling
Lyophilized Powder: −20°C (−4°F) for long-term storage (up to 24 months). Refrigeration 2–8°C (36–46°F) for short-term use (up to ~3 months). Original sealed vial in the freezer is safest.
Reconstituted Solution: 2–8°C (36–46°F), use within ~7–14 days. Keep sealed, avoid light, and do not repeat freeze-thaw cycles.
Reconstituted Solution: 2–8°C (36–46°F), use within ~7–14 days. Keep sealed, avoid light, and do not repeat freeze-thaw cycles.
Frequently Asked Questions
Methylene blue is a synthetic dye and redox-active drug, not a peptide. In medicine, prescription methylene blue injection is used for acquired methemoglobinemia, while online “drops,” gummies, and supplements are a separate wellness market with very different quality and safety concerns.
A methylene blue calculator should start with concentration, not with a generic drop count. For example, a 1% solution is usually 10 mg/mL; if a dropper gives 20 drops per mL, each drop is about 0.5 mg, so 2 drops would contain about 1 mg, but real droppers can vary.
No. Most methylene blue products are already liquids, tablets, capsules, or lab dyes, so the useful math is dilution and concentration math rather than peptide-style reconstitution. For example, 1 mL of a 1% methylene blue stock added to 9 mL of suitable diluent gives 10 mL at 1 mg/mL.
Methylene blue can act as an electron-transfer compound, which is why it is studied in oxygen-carrying blood chemistry, mitochondria, staining, and redox biology. The popular claims around energy, focus, anti-aging, cancer, and parasites are much broader than the approved medical use and should not be treated as proven benefits.
The biggest safety flag is drug interaction, especially with SSRIs, SNRIs, MAOIs, some opioids, and other serotonin-raising drugs because serotonin syndrome can be serious or fatal. People with G6PD deficiency are also a major concern because methylene blue can trigger hemolytic anemia.
Practical takeaway: If your real goal is weight or metabolic health, the most useful next step is discussing approved treatment options with a clinician rather than relying on an unapproved compound.
Important: This tool is for informational and research-reference purposes only. Not intended for human or veterinary use.