Quick answer: The ingredients are methylene blue, zinc and potassium. Evidence that supplement-sized amounts support memory or focus is limited, amounts are not published, and we know of no clinical trials on the finished formula.
Methylene blue
It has a long history in medicine, but that history does not show that a daily supplement improves memory. Safety warnings are significant. See Methylene Blue Explained.
Zinc and potassium
Both are essential minerals most people get from food. See Zinc Explained and Potassium Explained.
Where it falls short
The seller does not publish per-serving amounts, so the formula cannot be compared with research doses. We do not claim the drops improve memory, treat memory loss or protect the brain.
Bottom line
A short ingredient list with limited evidence for any specific outcome and meaningful safety cautions. See our worth-it review and the references.