This vibrantly colored chemical was originally created for use as a fabric dye. Kittisak Kaewchalun via iStock/Getty Images Plus
The internet is abuzz with tributes to a liquid chemical called methylene blue that is being sold as a health supplement.
Over the past five or 10 years, methylene blue has come to be touted online as a so-called nootropic agent – a substance that enhances cognitive function. Vendors claim that it amps up brain energy, improves memory, boosts focus and dispels brain fog, among other supposed benefits.
Health influencers, such as podcaster Joe Rogan, have sung its praises. In February 2025, shortly before he was confirmed as health and human services secretary, Robert F. Kennedy Jr. appeared in a video squirting a blue liquid widely presumed to be methylene blue into a glass – though he never verbally endorsed the substance.
As a researcher studying inflammation and cancer, I investigate how dyes affect human health. Claims about methylene blue are…
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Author : USA365
Publish date : 2025-06-03 19:03:00
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