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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. W

    Atenolol (beta-blocker) Need info ASAP

    It's a few years ago since this happened and I can't remember the dosage ..... but I remember the effect quite vividly. I guess it depends on the reason the beta-blocker was prescribed..... it is often used to reduce high blood pressure in which case there are Angiotensin II inhibitors which...
  2. W

    Atenolol (beta-blocker) Need info ASAP

    Hi SOC .... I was put on Atenolol for atrial fibrillation. The side effects were worse than the problem. My energy levels, both physical & mental were reduced to almost zero, and I literally dragged myself around for the three months that I was on it... but that said.... I tend to get side...