CZTL Methylene Blue 0.1% 100 ml Solution

Pretty good cognitive enhancer, helps me maintain steady focus for long stretches of time, more fluidity in my thoughts.Makes every breath I take feel more invigorating, vs before this sometimes a normal breath didn't feel enough prompting the need for yawning or deeper breathing.0.1% is a good concentration, you only need 5-10mL to get the nootropic effects. There's no risk of overdosing at this concentration. At 1% you run the risk of exceeding the recommended dosage and inducing oxidative stress, serotonin syndrome, etc.Packing is decent but could use some improvement, a mL marker on the dropper instead of including a plastic one seperately, a better sticker.

using since last couple of years , works great , good quality...but use only if you know how to use properly!

Product satisfied my requirement

They improved on their packaging this time.... in brown glass bottle with a glass dropper. Had also added another measurable plastic dropper.Product seems legit.Requesting them to make 1% concentration solution.

If it was 1.0% then everyone will choose this brand

very good

This product is only a .1% concentration, the norm in Canada is 1%.That means it requires 10 times more to produce a desired effect.As well, the bottle came only 1/3 full.Definitely some quality control problems.

Great buy