Quick answer: It may suit healthy adults who want a simple daily routine and take no interacting medication, but it has real limits: amounts are not published, there are no clinical trials on the finished formula that we know of, and methylene blue has serious interaction warnings.
What you get
A 1 fl oz (30 mL) bottle of liquid drops with methylene blue, zinc and potassium, offered in 2, 3 and 6-bottle packs at $79, $69 and $49 per bottle at the time of writing, with a 60-day money-back guarantee subject to terms. Confirm the current price and terms at checkout.
Pros
- Liquid drops, no pills
- Named ingredients
- Money-back guarantee, subject to terms
- Simple once-a-day routine
Cons
- Per-serving amounts are not published on the seller’s page
- No clinical trials on the finished formula that we know of
- Serious interaction warning with antidepressants and serotonin-affecting medicines
- Not suitable for G6PD deficiency, pregnancy or nursing
- It can turn urine blue or green
Who may want to skip it
Anyone taking an SSRI, SNRI, tricyclic or MAOI, or any serotonin-affecting medicine; anyone with G6PD deficiency; anyone pregnant, nursing or under 18; and anyone with memory concerns that have not been checked by a clinician.
Bottom line
Treat it as an optional add-on to sleep, nutrition and activity, after speaking with a healthcare professional. Read the safety review and the ingredients review.