Has this company been investigated by the fda?

I don’t know if the company has been investigated but in response to the other two answers. Methylene blue is indeed considered a drug that has been approved by the FDA for the treatment of various medical conditions such as methemoglobinemia and urinary tract infections. It is also often used for diagnostics in various surgical procedures.

Will this stain my mouth or teeth? How much dilution to prevent staining?

MB 1% solution is as staining as blue ink for an ink jet printer, so yes it will stain teeth, countertops, or your carpet (which happened today for us.) However, you can avoid staining your teeth and tongue by purchasing size 00 acid resistant veggie capsules, sold here on Amazon. Regular size 00 veggie capsules also work, but the AR capsules are thicker, and are white, not clear. You put 8-11 drops in the longer half of the capsule, then push on the smaller half. Even AR capsules get soft when filled with MB (or even water, which you can practice with), so be sure to fill your veggie cap over a sink (preferably stainless steel), or outside, just as you would if using ink. Swallow the capsules and wash it down with water or your favorite beverage. I use this method myself. Limeade diluted with water can also be used if you just want to add drops to a beverage. It hides the taste and is high in Vitamin C.

They say in the comment that it is 0.5 mg per kilo, so that means I have to use if I weight example 68k I have to use 34 drops of this bottle perdose?

When the manufacturer states that a drop has 0.5 mg and there are 1000 drops in a bottle, he is using the technical definition of a drop, which is 0.05 ml. In reality there are 400-500 drops in this bottle using this dropper (half as many). A drop in reality is not the same thing as a technically-defined drop, because different fluids have different densities and surface tension, and dropper sizes vary too. There are 500 mg in this bottle and roughly 500 drops in reality. So a drop in reality is roughly 1 mg, or a little more, 1.25 mg. So if you are targeting 34 mg, then I think you’re correct, roughly 34 drops of this bottle using this dropper.

What is the difference/benefit with ordering the 0.5% and the 1% methylene blue?

One drops of 1% is equivalent to 0.5mg methylene blue, for example, I use 8 drops (4mg) dosage for best mitochondria action. If 0.5% solution is used, then it needs to be 16 drops instead of 8 drops.

ASIN	B09J1JRSLC
Age Range Description	Adult
Allergen Information	Milk, Soy Free
Best Sellers Rank	#1,803 in Health ( See Top 100 in Health ) #10 in Antioxidant Supplements
Brand	COMPASS LABORATORY
Brand Name	COMPASS LABORATORY
Color	Blue
Container Type	Bottle
Customer Reviews	4.3 out of 5 stars 3,272 Reviews
Dosage Form	Liquid
Dose Release Method	Osmotic Release
Flavor	Unflavored
Flavour	Unflavored
Item Form	Liquid
Item Weight	0.26 Pounds
Item form	Liquid
Item weight	0.26 Pounds
Manufacturer	Compass Laboratory
Material Features	Antioxidant
Material Type Free	en_AE
Number of Items	1
Primary Supplement Type	Methylene Blue
Primary supplement type	Methylene Blue
Product Benefits	Antioxidant
Special Ingredients	Antioxidant
Specific Uses For Product	Laboratory
Supplement Formulation	Individual Supplement
UPC	656043504304
Unit Count	50 Milliliters
Unit count	50 Milliliters

COMPASS LABORATORY Methylene Blue 1% |USP-Grade Methylthioninium Chloride Liquid | High Purity Dietary Supplement for Brain Function & Cognitive Health | No Formaldehyde (1)50ml Glass Dropper Bottle

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