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Almost Banned Once
Join Date: Feb 2009
Location: Adelaide South Australia
Posts: 38,951
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I'd never heard of it...
"Methylene blue is a medication used in the management and treatment of methemoglobinemia, a condition in which hemoglobin decreases its ability to carry oxygen."
https://www.ncbi.nlm.nih.gov/books/NBK557593/
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- Peter
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