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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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levothyroxine

  1. Sarah94

    Mannan oligosaccharides (MOS)

    Has anyone taken a supplement containing "Mannan oligosaccharides" (MOS) (it's in some probiotic supplements) and did you get any bad effects from it? I'm trying to work out what's causing my sudden terrible sleep for the last 3 nights. I started the supplement containing MOS 3 days ago (it's...