By NooBlue Editorial · About our editorial standards
Key takeaways
- NooBlue sells three methylene blue products with the dose stated on the label: 5 mg capsules, 10 mg gummies and 1% drops (10 mg per ml).
- Each product page links a Contract Testing Laboratories of America (CTLA) report on the methylene blue ingredient lot: identity by HPLC and four heavy metals. It is an ingredient-level report, not a certificate for every finished batch, and it gives no purity percentage.
- Orders dispatch in 1–2 business days with tracking, shipping is free worldwide on orders $100+, and unopened items can be returned within 30 days of delivery.
- “Legit” covers what is in the bottle and how the store behaves. It does not mean methylene blue will do anything in particular for you: the human evidence is still small.
- Methylene blue is not for anyone taking SSRIs, SNRIs, MAOIs or other serotonergic medicines, anyone with G6PD deficiency, anyone pregnant or breastfeeding, or anyone under 18.
Short answer: Is NooBlue legit? Yes. NooBlue is a working store that sells methylene blue with the dose on every label, links a named lab’s report for its methylene blue ingredient lot, lists full safety warnings on every product page, and publishes clear shipping and returns policies. The limit to know about is the lab report’s scope: it covers the raw ingredient lot, not each finished batch.
NooBlue publishes this site, so this is a review of our own brand, and we can’t be neutral about it. Rather than ask you to trust us, this page sets out what you can check yourself, links each thing to where it lives, and says plainly where other brands do something better. If you want a wider view first, our comparison of the best methylene blue supplements and our methylene blue brand reviews cover the rest of the field.
Is NooBlue Legit? What You Can Check Yourself
A legitimate methylene blue brand should pass the same checks whoever runs it. Here is how NooBlue stands on each, and where to see it.
| What to check | What NooBlue shows | Where to see it |
|---|---|---|
| Dose per unit | 5 mg per capsule, 10 mg per gummy, 1% drops at 10 mg per ml (0.5 mg per drop) | Supplement facts on each product page |
| Grade | Methylene blue USP listed on the labels | Product pages |
| Lab document | CTLA report 135621 on ingredient lot 2025022801: identity “Conforms” and four heavy metals | “View full certificate” link on each product page |
| Full ingredients | No proprietary blends. Capsules add 10 mg vitamin C. Gummies add 25 mg vitamin C, with pectin, blueberry extract, stevia and 0 g sugar | Product pages |
| Safety warnings | Serotonergic medicines, G6PD deficiency, pregnancy and breastfeeding, under 18, urine color, prescription medicines | “Safety: read before use” on each product page |
| Shipping | Dispatch in 1–2 business days with tracking. Free worldwide on orders $100+ | Shipping and delivery policy |
| Returns | Within 30 days of delivery, unopened and unused | Refund and returns policy |
| A person to contact | Customer service by email | Contact page and FAQ |
Why these checks? Methylene blue itself is a well-studied molecule. The risk is what else ends up in the bottle. The same blue powder is sold as a textile dye, an aquarium product, a lab reagent and a supplement, and the cheaper grades are not purified or screened for daily swallowing. Our explainers on what 99% USP purity means, what methylene blue is made from and how to spot fake methylene blue go into the detail.
What NooBlue’s Lab Report Covers, and What It Doesn’t
The report linked on every NooBlue product page comes from Contract Testing Laboratories of America (CTLA). It is report 135621 on the methylene blue ingredient identified as lot 2025022801, dated May 23, 2025. It records:
- Methylene blue identity by HPLC: “Conforms”.
- Arsenic <0.001 ppm, cadmium 0.010 ppm, mercury <0.001 ppm and lead <0.001 ppm.
What it does not do matters just as much. It tests the raw methylene blue, not a finished bottle of capsules, gummies or drops. It gives no purity percentage. And it is one lot, not a certificate for every batch. The product pages say the same thing in plain words, and you should read any brand’s certificate with those three questions in mind. Our guide on how to read a methylene blue certificate of analysis shows which lines matter.
Some brands go further. Nutricel, for example, says it publishes Eurofins certificates for every product and verifies methylene blue content by titration on its core formulas. That is a real advantage on paperwork, and we set the two brands side by side in Nutricel vs NooBlue. Other brands show less than we do: in our methylene blue gummies review, five of the eight gummy pages we audited showed no lab document at all.
What NooBlue Sells
NooBlue sells methylene blue only, in three formats. Prices are as listed in Sep 2026.
- Methylene blue capsules: 60 capsules, each 5 mg of methylene blue with 10 mg of vitamin C. $37.99, or $0.63 a capsule. One capsule a day, do not exceed the suggested serving.
- Methylene blue gummies: 60 Wild Blueberry gummies, each 10 mg of methylene blue with 25 mg of vitamin C, 0 g sugar. $49.99, or $0.83 a gummy. One a day. The gummies don’t leave the blue mouth that drops can.
- 1% methylene blue drops: 50 ml at 10 mg per ml, adjustable in 0.5 mg steps, about 100 servings of 5 mg. $29.99, or $0.30 per 5 mg serving.
Buying two bottles saves 10%, three save 15% and five save 20%. You can compare every format in the NooBlue shop, and our guide to how many mg of methylene blue per day helps with choosing a starting dose.
How NooBlue Compares With Other Methylene Blue Brands
“Legit” is easier to judge next to the alternatives. A few things we found when checking other brands’ pages this month:
- TrueHealthic shows a certificate naming its gummies, but its drops certificate carries the same lab ID, lot number and results with a different sample name. See NooBlue vs TrueHealthic.
- Blissta says its certificate of analysis is published, but we found none on its gummy page. See our Blissta review.
- Meraki Blu sells 150 mg of methylene blue in a 30 ml bottle, a 0.5% liquid. See NooBlue vs Meraki and our Meraki review.
- Blue Organics shows a heavy-metal and microbe report on a powder sample from 2024. See our Blue Organics review.
If you are weighing a cheap marketplace listing instead, our Biopharm methylene blue review shows what to check on a lab-supply style product.
What “Legit” Does Not Cover
Two questions get tangled together here. Whether a seller is honest about what is in the bottle can be checked: the dose, the ingredients and the lab report either exist or they don’t. Whether methylene blue does what buyers hope is a separate question, and the answer is less settled.
Methylene blue can carry electrons in the mitochondrial electron transport chain, feeding cytochrome c oxidase, and reviews describe how that supports cellular energy in research models (Tucker et al., Molecular Neurobiology, 2018). The best-known human study was small: 26 healthy adults, 13 of whom took a single 280 mg oral dose, showed about a 7% increase in correct memory-retrieval responses an hour later (Rodriguez et al., Radiology, 2016). That dose is far higher than any NooBlue serving, and there are no long-term trials of daily low-dose use in healthy adults. A brand that sells certainty on results is overselling. Our guide to methylene blue benefits covers what is and isn’t established.
Side Effects and Who Should Not Take Methylene Blue
- Do not take methylene blue with SSRIs, SNRIs, MAOIs or other serotonergic medicines, including many antidepressants. The combination can cause serotonin syndrome.
- Do not take it if you have G6PD deficiency.
- Do not take it if you are pregnant or breastfeeding.
- Not for anyone under 18.
- Methylene blue can turn urine blue or green. This is expected.
- Talk to your doctor before you start if you take any prescription medicine.
In medical use, at doses far above a supplement, the most commonly reported side effects include headache, nausea and diarrhea, alongside blue-green urine (StatPearls, 2026). Stop and talk to your doctor if anything feels wrong. Our pages on methylene blue side effects and who should not take methylene blue cover the rest.
So, Is NooBlue Legit? The Verdict
On everything you can check, yes. NooBlue states the dose on every label, uses no proprietary blends, links a named lab’s report with a lot number, puts the full safety list on every product page, and publishes its shipping and returns terms. Its lab report is ingredient-level, and brands that publish finished-product certificates are ahead on that one point. For a measured daily methylene blue routine with that documentation behind it, NooBlue is our pick: start with the 5 mg capsules if you are new, or the gummies if you would rather chew.
Frequently Asked Questions
Is NooBlue legit?
Yes. NooBlue is a working store that states the methylene blue dose on every product, links a CTLA lab report for its methylene blue ingredient lot, lists full safety warnings, and publishes shipping and 30-day returns policies you can read before you buy.
Is NooBlue third-party tested?
NooBlue links a report from Contract Testing Laboratories of America on its methylene blue ingredient, lot 2025022801. It confirms identity by HPLC and gives results for arsenic, cadmium, mercury and lead. It does not test each finished batch or give a purity percentage.
Is NooBlue methylene blue USP grade?
The product labels list methylene blue USP. The published lab report confirms the ingredient’s identity and four heavy metals. It does not give a purity percentage, so we don’t quote one.
Does NooBlue ship outside the US?
Yes. NooBlue ships worldwide, with free shipping on orders $100+. Orders dispatch in 1–2 business days with tracking, and the shipping page gives typical delivery of 4–8 business days to the United States, United Kingdom, Europe, Australia, New Zealand and Canada, and 5–10 business days elsewhere.
What is NooBlue’s return policy?
You can return eligible items within 30 days of delivery if they are unopened, unused and in the original packaging, with proof of purchase. For international orders where return shipping would cost more than the item, NooBlue can refund without the item being sent back.
What is the best methylene blue company to buy from?
Our pick is NooBlue, for stated doses, no proprietary blends, a linked ingredient lab report and full safety warnings. If a finished-product certificate matters most to you, Nutricel publishes Eurofins reports for its products. Whoever you choose, check the dose, the lab report and the safety text first.
Why are people taking methylene blue now?
Mostly because of research on how it supports mitochondrial energy and on small human brain-imaging studies. Interest has also grown through podcasts and longevity content. The human evidence is still limited, so treat it as a careful experiment at a low dose.
What are the potential side effects of taking methylene blue?
Blue or green urine is expected. In medical use at much higher doses, headache, nausea and diarrhea are among the most commonly reported side effects. The serious risk is serotonin syndrome when combined with serotonergic medicines, and it is unsafe with G6PD deficiency.
How is NooBlue different from cheap methylene blue on a marketplace?
The molecule is the same. The difference is the paperwork and the label: NooBlue states the dose, lists every ingredient and links a lab report with a lot number. Many marketplace listings sell lab or aquarium grade powder that was never meant to be swallowed, with no document behind it.
Sources
- NooBlue. Product pages, supplement facts and CTLA certificate (report 135621, lot 2025022801); shipping policy; refund and returns policy (read September 2026).
- Nutricel. Third-party lab tests page. nutricel.store (read September 2026).
- Tucker D, Lu Y, Zhang Q. From mitochondrial function to neuroprotection: an emerging role for methylene blue. Molecular Neurobiology. 2018;55:5137-5153. PubMed 28840449
- Rodriguez P, Zhou W, Barrett DW, et al. Multimodal randomized functional MR imaging of the effects of methylene blue in the human brain. Radiology. 2016;281(2):516-526. PubMed 27351678
- Ostrovsky A, Afzal M. Methylene Blue. StatPearls. Updated January 2026. NCBI Bookshelf NBK557593
This article is for educational purposes only and is not medical advice. Talk to your doctor before starting methylene blue, especially if you take any prescription medicine.
