SKU: 46525495031

Rejuven Blue - 3-Pack Methylene Blue Powder 5 Grams Pharmaceutical Grade

Sale price$89.99 Regular price$99.99
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Description

Rejuven Blue - 3-Pack Methylene Blue Powder 5 Grams Pharmaceutical GradeRejuven Blue Methylene Blue Powder 3 x 5. 0 Grams USP 99. 5% Purity A total of 15 grams of powder across 3 glass vials. Perfect for DIY biohackers to add to water for their own solution. Rejuven Blue comes in a vial containing 5. 0 grams of methylene blue powder, designed for easy, precise reconstitution in purified water for those seeking a high purity formulation. Also available with an optional dosing kit containing a constitution bottle

Rejuven Blue – Methylene Blue Powder 3 x 5.0 Grams USP 99.5% Purity

A total of 15 grams of powder across 3 glass vials. Perfect for DIY biohackers to add to water for their own solution.

Rejuven Blue comes in a vial containing 5.0 grams of methylene blue powder, designed for easy, precise reconstitution in purified water for those seeking a high-purity formulation.

Also available with an optional dosing kit containing a constitution bottle (recommended for first-time buyers), this product allows for easy preparation of a 500mL solution tailored to your needs.

Each vial provides about a 4-10 week supply or longer, depending on dosage.

  • 3x 5.0 grams of 99.5% USP Pharmaceutical-grade methylene blue
  • Pamplet with dosing schedule and best practices
  • Free shipping within the USA

Optional Complete Dosing Kit (+$27.99) (RECOMMENDED)

  • 500 mL glass bottle for constituting 1% solution
  • Measuring pipette
  • Funnel
  • 2 oz amber glass dropper bottle
  • 1/4 tsp measuring spoon

Single Rejuven Blue 5g Vial: $39.99

FOR THOSE WHO WANT IT DONE FOR THEM:

Pre-made 1% Solution in 2-oz bottle (59 mL)

To support optimal use, Rejuven Blue includes a detailed dosing insert outlining a scientifically backed regimen for maximizing the nootropic and longevity-supporting effects.

Unlike many other formulations that under-dose methylene blue, Rejuven Blue is designed to deliver a research-based, effective range of 1-4 mg per kg of body weight per day, ensuring the full potential of this compound is realized. For those new to methylene blue, the constitution bottle simplifies preparation and ensures accurate dilution for safe, effective daily use.

Instructions:

  • Simply add the powder to 500 mL of purified water in a glass or HDPE container and mix well. Optional 500 mL reusable glass container can be purchased to be filled to the top.
  • Store in a cool, dark place
  • Recommended to drink with a straw
  • Methylene blue taken orally has a half life of about 20 hours. For optimal effects, consume roughly 8-12 hours apart, at least 5 hours away from sleeping. Ideally, it is taken upon waking and in the mid-afternoon.
  • Each 1 mL is 10 mg of methylene blue. Example, dosing at 150 mg/day in 2 divided doses of 75 mg, you will draw / measure out 7.5 mL of the 1% solution
  • Dosing schedule included in product as a pamplet, as well as available here for download.

REFERENCES:

PUB MED: The Potentials of Methylene Blue as an Anti-Aging Drug

PRECISION & FUTURE MEDICINE: Clinical effectiveness and prospects of methylene blue: A systematic review

NOOTROPICS EXPERT: Methylene Blue (Info on optimal dosing)

Benefits

Potential Benefits of Methylene Blue at Research-Supported Doses

  • Cellular Energy Support – Plays a role in mitochondrial function, which is essential for efficient energy production.
  • Cognitive Optimization – Studied for its potential to support focus, mental clarity, and overall brain function.
  • Antioxidant Properties – May help neutralize oxidative stress, a factor associated with cellular aging.
  • Metabolic Efficiency – Research suggests it could support cellular respiration and metabolic function.
  • Supports Healthy Circulation – May aid in optimizing oxygen utilization at the cellular level.
  • Neuroprotective Potential – Explored for its role in supporting long-term cognitive health.
  • Mood & Mental Resilience – Investigated for its possible impact on mood regulation and mental well-being.

Disclaimer: These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Please consult a healthcare professional before use.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 46525495031

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Verified Purchase
marsha
Natrona Heights, US
★★★★★ 5
Good look
Size: 11, Color: Brown Crazy Horse
Great look.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
D
Verified Purchase
Dave M
Port Orchard, US
★★★★★ 1
Something's changed at Florsheim
Size: 11.5 Wide, Color: Black
I have a pair of size 11W Florsheim Palermo loafers that have lasted over 8 years and are still soft and exceptionally comfortable. Ordered a pair of 11W Florsheim Milano on Amazon but they are too small and have a cheap plastic sole. So, ordered 11.5W Florsheim Berkley and they were way too big. Returned them and ordered 11W Berkley instead and they were also too big ... and the Berkley also has a rubber sole instead of the original leather shown in the product photos. Guess they just don't make them like they used to.
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Reviewed in the United States on May 25, 2026
C
Verified Purchase
Cliff
Charlottesville, US
★★★★★ 3
Beware of the Brown Crazy Horse version.
NOTE: This review is COLOR SPECIFIC and concerns the Brown Crazy Horse version of this shoe. I am a loyal Florsheim customer having purchased Florsheim Imperials in years past. They are a fine shoe. However, I have to admit complete frustration with the Florsheim Berkley Flex Penny Loafer in "Brown Crazy Horse." The photos in the listing show a shoe with gloss...a shine. The photos on the box show a shoe with shine. Don't believe the photos. "Brown Crazy Horse" is, at best a dull matte finished leather. If you want a classic penny loafer with the classic Florsheim look this is NOT the color to choose. When the shoes arrived and the shoes did not match the photo on the box, I ignorantly assumed it was merely a case of the wrong shoes in the box so I exchanged them for another pair, which was a big mistake. It is Florsheim's incorrect photo and box label that caused me the inconvenience of going through two pair and then having to return both. I would assume other colors are as pictured in their listings because I cannot imagine that every Florsheim Berkley Flex Penny Loafer is a dull matte finish. I'm sorry that I do not have photos of the dull finished shoes. You'll have to take my word for it. They are a matte finish at best.
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Reviewed in the United States on January 21, 2026
D
Verified Purchase
Dean
Draper, US
★★★★★ 5
Just right, great quality and value (in the price)
Size: 11.5 X-Wide, Color: Burgundy
Exactly what I'd expect from a Florsheim. I'm delighted. Folks, let me share one mistake I made on my way to a good fitting pair of shoes. I ordered some in my size (I have a big foot, especially in width). I ordered what I thought I needed and it came in wide enough, but too short (the short was the surprise), but we all are told: "Manufacturers vary in their sizes not only from each other but from shoe model to shoe model." I want you to know I believe in that when it applies to clothes, especially children's and womens fashions in my life's experiences, but NOT with shoes, especially main-brand-deluxe. I ordered the next half-size up and now I have too large, how can that be? I found out when I pulled the paper stuffing out, in particular the LAST glob that extends from the middle to the toe, that it WASN'T the last glob, there was indeed a rather small glob still way down in the toe, almost pointless for this minor bit of stuffing being separate from the other, but it was. I had already innocently troubled Amazon with returns of shoes that would have fit, so I'll keep the half-size too large as a life lesson. I ordered this pair in the size I believed I was all along and viola, a good fit. What changed? When that last toe piece of paper wadding that's hard to see and even harder with a big hand to reach, the shoe fit perfectly. That's a lot of trouble because of a small piece of paper that was hard to see, but that's why I write this review for you so that you can make sure all the paper is really out when you already think it is. Amazon has been good enough not to hold me accountable and in return I'll not only repeat buy, I tell you of my experience.
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Reviewed in the United States on December 3, 2014
D
Verified Purchase
Doc
Belleville, US
★★★★★ 5
Great price great shoe
Size: 12, Color: Burgundy Polished Full Grain
Excellent shoe. Tried the Sebago penny loafer and the sizing was ridiculous. These J and M are sized perfectly. I’ve had them before and they wear like iron. Very comfortable right out of the box.
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Reviewed in the United States on May 23, 2026

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