Doctors are slamming fitness influencers hawking the health benefits of methylene blue, an anti-fungal medication often used to treat fish tanks.
The substance is sometimes prescribed by physicians to treat methemoglobinemia, a medical condition in which blood cannot deliver oxygen to different parts of the body.
However, while it is not harmful for most humans to consume methylene blue in therapeutic doses, some experts are trashing claims from influencers that the dye helps enhance cognitive abilities, boost metabolism and fight ageing.
Methylene blue is a longstanding treatment for aquaria, used by generations of fish keepers. It’s effective against a range of fungal & bacterial infections. For use in coldwater and tropical aquariums, just 100ml will treat up to 1,000 litres of tank water on average.
