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Methylene blue: Should you take it
If you let it go for too long, it can cause problems in your nervous system such as: Vision problems Memory loss A pricking or numbing sensation Difficulty speaking or walking due to ataxia (loss of physical coordination) Damage to your extremities (hands, feet, arms, etc.), particularly your legs Other problems could include Infertility (this should go away with B12 treatment) Stomach cancer Bleeding and infections Damage your heart, brain, bones, and other organs in your body If you're pregnant and don't get enough vitamin B12, your baby is at risk of a serious birth defect called a neural tube defect
PMCID: PMC11907856
Summary Keywords thiamine, gastrointestinal beriberi, acetylcholine, intestinal ThDP-dependent enzymes, intestinal transport of thiamine, intestinal metabolism of thiamine, functional gastrointestinal disorder Citation Overton E, Emelyanova A and Bunik VI (2025) Thiamine, gastrointestinal beriberi and acetylcholine signaling
