Vital Blu Methylene Blue is guaranteed USP grade, lab tested, and comes in a 100 ml(3.38fl. oz) dropper bottle. Each bottle includes 1000mg of Methylene Blue mixed into a 1% aqueous solution for ease of use. It has been tested for heavy metals and impurities.
 
Methylene blue has a long history of safety and its benefits have been thoroughly studied and proven to support the mitochondrial function in a cell, and has been shown to improve:
 
Focus
Energy
Memory
Mood
 
It has also been shown to possibly help protect or assist with ailments such as:
 
Dementia
Alzheimer’s
Seizures 
Depression
Neurodegenerative diseases
Cancer
CAUTION - It's important to be aware that this is a lab created substance. If you choose to use methylene blue do your research and look into both supporting and non supporting sides of the research.  Always proceed with caution and awareness. We do not recommend taking in high doses or for long periods of time.  Some side effects can be seen with vasoconstriction - hands and feet may become cold because blood vessels restrict.  
 
100 ml bottle