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    Created in 2008, Phoenix Rising is the largest and oldest forum dedicated to furthering the understanding of, and finding treatments for, complex chronic illnesses such as chronic fatigue syndrome (ME/CFS), fibromyalgia, long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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  1. S

    Allergic to something in methyl B product

    Hello. Which one of these ingredients is most likely to cause a terrible itch all over the body, and swollen hands and feet? Vitamin B6 (as Pyridoxal 5'-Phosphate) Folate (as L-5-Methyltetrahydrofolate from L-5-Methyltetrahydrofolic Acid, Glucosamine Salt) Vitamin B12 (as Methylcobalamin)...