Methylene blue (ProvayBlue) is a medication doctors use to treat a rare blood condition called methemoglobinemia. Naturally, methylene blue is a solid. But as a medical treatment, it’s dissolved in ...

The trendy supplement was originally developed as a fabric dye—and later used as a malaria treatment. We asked experts if it really has the cognitive benefits touted on social media. A solution of ...

Methylene blue treats methemoglobinemia, a blood condition. Recently, methylene blue supplements have gained attention for their alleged cognitive and aging support benefits, but these uses require ...