Methylene Blue Pharmaceutical Grade, USP Grade, Third-Party Tested with Vitamin C - Memory Booster - Improves Cognitive Function and Focus - Clear Thoughts and Reduced Fog - Liquid Supplement

Soooo helpful! Lots of energy and focus. Make sure to do your research so you know how to use it. This is for sure a new staple in our supplement and vitamin cabinet. Helped with my adhd symptoms too.

You Guys vitamin C causes the methylene blue to turn light in color. The bottles that you were getting that are dark blue have oxidized the vitamin C. Keep it in a dark area. If anything, the dark blue ones that you want are old or have been exposed to sunlight. It’s supposed to come light and color because it has the vitamin C in it. You are getting methylene blue still I promise. I love this company!!! Best methylene blue on the market. They sell to compound pharmacies because there’s is so pure.

It doesn't taste too bad but I hate that it leaves my mouth blue. I think it does help my brain fog.

I have purchased 4 bottles of OnGuard Methylene Blue. First bottle was sold to me by my Dr. The last 3 bottles were purchased through Amazon. First 3 bottles the product was deep blue, had a good taste and seemed to do what I was hoping it would do. I had read negative reviews however they were dated a year ago so I was believing they had cleaned up their act. Well my last bottle was just like the negative reviews. Product was no longer blue. It is a light yellow/green. I still took a dose and it severely burned my mouth and throat and tasted foul. Went on app to do a return only to learn I’m screwed! No returns allowed for this product. Very convenient for a company that will put out inferior quality products. They say third party tested! How then do I get something completely different from the other 3 bottles that is foul and burns my mouth and throat. If you can’t return then…There is no accountability! I’m at least going to show this to my Dr so he knows that it could be dangerous for other patients!

Tasty.was surprised when it Arrived as a Yellowish-Orange color... 2 other product producers products were Blue or dark Blue. Definitely was a curious color yet i mixed it up for its vitamin C and Pina colada flavor and continued onwards.AS FAR AS EFFECT... As I was NOW ‘thinking it over’ considering a 2nd bottle... I review ALLOT of the 1-3!star reviews and SEE MANY concerning statements.i wasn’t sure of the chemistry, vitamin C, mineral oxides... hmm anyone have an explanation Why it’s NOT blue? Manufacturer/Seller... Any explanation?Edit:I guess Seller doesn’t care about offering DEPTH of insights. I SINCERELY was hoping product manufacturer would respond, i guess TOO BUSY?!? BTW: With Methylene BLUE, THE PURE STUFF actually Helps in a few ways, like My Mom died August 14th and while she was ‘Treating for Cancer’ (To Prolong Quality of Life opportunities) of bone marrow, Knowing it has “no cure” My Mom urged ME to take ‘Methylene Blue’ = I ACTUALLY MIXED PURE products with Some of THIS flavored option for EASIER to swallow…. (What does it help?). In my case…With a depression, Being Authentic; that goes along with the ‘process’ of losing a best friend and favorite, loved one, and helped boost my Serotonin! HOW? I dunno. If you gotta know how or why, then go read books (or watch videos, to all you millennials)!And What’s it do?It DEFINITELY helped me manage the difficult times! And help me ‘press through’, and show up and be present, and be Next to and by my beloved mama’s side, so she could clearly know that someone cared about her, that she wasn’t alone + Especially that she was loved! Using this 5-12 drops a few times a day DEFINITELY causes my PEE to turn “Greenish-blue” (with Added Thiamine or B-1 = ‘b-complex’ hehe!) OR just simply BLUE! Oh boy, the looks GUYs make at Public urinals!Ha! I bought Blue colored underwear, hahahaha…Absolutely True! AMAZINGLY HELPFUL for depression and SADNESS ’tweaking’! Obviously, I ABSOLUTELY included my doctor, and you wonder what his comment was? “ I guess you learn something new every day! …But keep taking the other stuff and Journaling is good for any sort of ‘weird side effects’!”I said what about peeing greenish-blue or otherwise?He said: “ Will you sort of expect that dont’cha? … what I said, was anything weird! UH… well, uh, I guess I should’ve said unexpected!”

Excellent product.. I noticed mental clarity and more energy after just one use. Thank you!

Seems to give me more energy throughout the day.

Arrived quickly. Product looks good.