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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 (FM), long COVID, postural orthostatic tachycardia syndrome (POTS), mast cell activation syndrome (MCAS), and allied diseases.

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  1. klevier

    Tetrahydrobiopterin/BH4

    The same here I am also heterozygous for both MTHFR polymorphisms (C677T and A1298C)! No I have not tried BH4 I am hoping to be tested and have the synthetic form perscribed if my blood test indicate my BH4 is low. I am hopeful that this may be the solution. So far my physicians have not paid...