2 Pack Pharmaceutical Grade Methylene Blue 1% (60 mL), Third-Party Tested USP-Grade Methylene Blue for Humans, Formaldehyde and Alcohol Free Methylene Blue Pharmaceutical Grade in Amber Dropper Bottle

I really feel this makes a difference - more mental clarity. Thank you

I havent used this yet, but it arrived before due date.It would appear to be the most resonably priced one of its kind on the market.Some are very expensive, some very cheap this seems to be somewhere in the middle.It looks great, it has a dropper so that should make dosage easy.Time will tell if it helps with all the things it claims to.Looking forward to using it.

Great product, just a long wait.

Noticeably after taking this my concentration levels did increase rapidly. I was very focused on tasks and very motivated to get things done. However, I have had to stop taking as it also crashed my energy levels. A few hours after taking all I wanted to do was sleep. I had a short period of energetic motivation and the rest of the day I didn't have the ebenergy to do anything else.

Seems to be working- I definitely feel better. Taste is very bitter- I mix two drops with cordial at night

Mum's happy. Got her these as her friend recommended them for immunity support

I experienced severe nausea on the first day, so I tried again on the second day, but I’ve been vomiting and feeling sick most of the time since then. I suspect that this product may contain heavy metals or similar substances.I will never buy something like that from amazon again. I feel like I'm intoxicated. I did work in toxicology department before and I used methylene blue for patients but this is something different