• Welcome to Phoenix Rising!

    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.

    To become a member, simply click the Register button at the top right.

Search results

  1. L

    Vitamin D and Increase in Symptoms

    Stumbled onto this post while searching for a reason that I was so sick taking vitamin D3. I have criminally low levels of D, definitely deficient and *need* it----but I've been on the verge of tears taking the supplements because I was in *more* pain, irritable, upset etc. Can I ask how much...