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4.8 from 500+ reviews

Shop USP-grade methylene blue

Four formats, one compound. Every bottle is mixed and bottled in Vancouver, BC, and tested as the finished solution at an accredited US laboratory — with the batch number on the label to prove it.

30+ tests per batchNo fillers or additivesFree shipping over $40Bottled in Vancouver, BC
The Heisen Blue range of methylene blue solutions
BestsellerThird-party tested
Most people start here

2% Methylene Blue Solution - 120ml - Large

Double strength: 20 mg per mL, approximately 1 mg per drop. Fewer drops for the same amount, and up to 12 months of daily research use per bottle.

$59.99$69.99Save $10.00
  • USP grade, no fillers
  • Tested on the finished bottled solution
  • Studied for mitochondrial energy production
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Made in Canada Third-party lab tested 30-day money back
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All products

4 products

Which one

1% or 2%?

Both contain the same USP-grade methylene blue. The only difference is concentration.

1% solution
≈ 0.5 MG PER DROP

Preferred by people starting out — the lower concentration per drop makes it easier to start small and adjust gradually with more precision.

Start with 8 to 12 drops on day one
2% solution
≈ 1 MG PER DROP

More efficient once you have established your dose, and roughly double the supply duration at the same daily amount.

Start with 4 to 6 drops on day one

Still deciding? Read the full dosage guide.

Every batch, every bottle

Whichever you pick, it is tested the same way.

30+ Quality tests per batch
1% / 2% Confirmed concentrationWithin USP tolerance
<0.1 ppm heavy metals capUSP <232>
<10 CFU/mL microbialBeaconPoint Labs
Certificate of analysis
Certificate of analysis
Identity, potency, heavy metals, microbial pathogens and 20+ residual solvents — reported with real detection values.
View the full certificate →
From 500+ reviews

What people report

Customer photo from Dayna F.
“I can't say enough great things about Heisen Blue. In just a few days my neck pain, brain fog and leg pain have completely cleared up.”
Dayna F. VERIFIED PURCHASE
Customer photo from Tanner H.
“This is by far the most valuable supplement in my arsenal! After a full week of taking it, my mood and energy were totally sustained. My memory became sharper.”
Tanner H. VERIFIED PURCHASE
Customer photo from Miranda G.
“I've been taking the Heisen blue 2% solution for about 3 weeks now and I'm feeling more awake and alert. Think I will continue taking it!”
Miranda G. VERIFIED PURCHASE
Customer photo from Destiny R.
“I was skeptical about the price until I did the math on drops per bottle. It lasts months and the lab report is right there on the site.”
Destiny R. VERIFIED PURCHASE
Questions

Frequently asked questions

Is methylene blue safe to use?

Methylene Blue has been safely used in clinical settings for many years. Human studies have shown that it is well tolerated when taken in appropriate amounts. Doses used in studies are typically below 2 milligrams per kilogram of body weight, which is about 140 milligrams for a person who weighs 70 kilograms (approximately 154 pounds). However, many people find methylene blue to be effective at 5-20mg per day.

Recent clinical trials have shown promising results, including noticeable improvements in cognitive performance and a reduction in brain volume loss. No negative side effects were reported.

Study 1 | Study 2 | Study 3 | Study 4

Does Methylene Blue contain heavy metals?

Trace amounts of heavy metals can be found in nearly all substances, including pharmaceutical ingredients, supplements, food, water and even natural products like soil and spices. This is because heavy metals such as lead, arsenic, mercury, and cadmium are naturally occurring elements found in the earth’s crust and are nearly impossible to eliminate entirely from the environment.

Methylene Blue, like most pharmaceutical compounds, may contain extremely small traces of these elements. However, these amounts are carefully regulated. The United States Pharmacopeia (USP) and other international safety standards set strict daily exposure limits for heavy metals to ensure public safety. For example, the allowable daily intake for lead is 5 micrograms, and for cadmium it is 25 micrograms, according to USP <232> and ICH Q3D guidelines.

Each batch of our Methylene Blue is independently tested by a third-party laboratory to confirm that the levels of any detectable heavy metals are well below these accepted safety thresholds.

Some brands may claim their product is “heavy metal free,” but this can be misleading. What they often mean is that their lab results show “non-detectable” levels based on the detection limits of their test which is not the same as truly zero. For example, a result of 0.004 mg may be rounded down to 0 mg on a report, but it does not mean the substance is entirely free of that element. We provide full lab results showing actual detection values.

How to use methylene blue?

A common and well-supported approach to using Methylene Blue is to begin with a low amount and slowly increase, depending on how your body responds.

For our 1% solution, start with 8 to 12 drops on the first day.

For our 2% solution, begin with 4 to 6 drops.

This delivers approximately 4-6 milligrams of Methylene Blue, which allows you to observe how your body reacts.

Continue increasing only as needed based on how you feel. Many people find an effective dose to be around 8-20mg per day.

Many people choose to take two rest days per week, allowing the body a short break.

Everyone’s ideal dosage is different, so it’s important to start low, listen to your body, and make adjustments gradually. If you experience any discomfort, reduce the amount until you find what feels right for you.

For a complete breakdown of how to measure doses across 1% and 2% concentrations see our Methylene Blue Dosage Guide.

Will methylene blue turn my urine blue?

Yes, it’s very likely that your urine will turn blue or blue-green after taking Methylene Blue. This is completely normal and expected. The compound is excreted through the kidneys, and its strong pigmentation gives urine a noticeable tint, even at low doses.

The color change is harmless and simply a sign that your body is metabolizing and eliminating the compound. In fact, this visible effect is one of the reasons it has been historically used in medical diagnostics.

Curious why the color can vary so much, or why it sometimes doesn't happen at all? See our full guide on why methylene blue turns urine blue or green.

Where does your methylene blue come from?

We source our USP-grade methylene blue powder through a US distributor whose suppliers are established pharmaceutical manufacturers in India. India produces pharmaceutical ingredients for some of the world's largest drug companies and our powder meets the same USP grade standards. Every batch is then mixed bottled here in Canada and then independently third party tested at an accredited lab in the US.

For a detailed guide on what to look for and what to avoid when choosing a Methylene Blue brand, see our How to Choose High-Quality Methylene Blue guide.

Why not source from USA/Canada?

No facilities in the USA or Canada actually manufacture USP-grade methylene blue powder. There are some pharmaceutical companies or chemical wholesalers that have methylene blue in their catalogue, but they are contracting overseas factories to make it. Companies claiming "Made in USA/Canada" are usually just mixing overseas powder into solutions domestically which is exactly what we do as well in Canada.

How do you ensure quality?

Every batch of Heisen Blue undergoes independent third-party lab testing at BeaconPoint Labs, a US accredited laboratory. We test the finished bottled solution, not just the raw powder, covering over 30 quality checks including heavy metals screening for lead, arsenic, mercury and cadmium.

Our Certificates of Analysis are available for every batch and you are welcome to contact BeaconPoint Labs directly to verify any test results independently. We have nothing to hide and encourage you to do your own due diligence.

To learn more about how we approach quality and what to look for when choosing a methylene blue supplier visit our How to Choose High-Quality Methylene Blue guide.

Download our free COA Interpretation Guide for a step-by-step walkthrough of how to read and verify a Certificate of Analysis.

Is this the same quality as other suppliers?

Only if it is USP-grade and independently verified. Many suppliers sell industrial grade methylene blue which has no standardized purity requirements and may contain contaminants. Heisen Blue is USP-grade and tested at BeaconPoint Labs, a US accredited laboratory, with over 30 quality checks per batch including heavy metals screening. We also test the finished bottled solution not just the raw powder.

Do not use if you are:
  • Taking SSRIs, SNRIs or MAO inhibitors. Risk of serotonin syndrome, a potentially life-threatening condition
  • Taking any other serotonin-affecting substances including triptans, dextromethorphan or St. John's Wort
  • Taking any prescription stimulants.
  • Diagnosed with G6PD deficiency
  • Pregnant or breastfeeding
  • Taking any prescription medication that affect serotonin. Consult your doctor before use.

Read the full safety guide including all contraindications and drug interactions