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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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cobalamin

  1. S

    Why are B12 supplements making my symptoms so much worse?

    Hi, I just wondered if anyone knew why B12 greatly worsened my symptoms? I had an adverse reaction to an antidepressant in January, and since I have been struggling with various symptoms. I had covid in march, which made it all worse and I have struggled with fatigue and bad brain fog...
  2. nerd

    POLL: How common are B Vitamin deficiencies?

    Given the assumption that CFS/ME is a hypermetabolic condition, I'm trying to found the hypothesis that Vitamin B deficiencies are amplified by the hypermetabolic state and that the normal recommended intake of these Vitamins doesn't apply to CFS/ME. I'm particularly interested in how common...
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