I have been taking Metoprolol since Feb. 2025 and I have finally put two and two together as I do have fibromyalgia as well but my pain was different. I have been having SEVERE muscle and joint pain. I am 78 and follow a whole foods plant based diet now for 16 years and I went from using exercising equipment at our clubhouse to stay fit to now walking with an upright walker just to exercise outside and my muscles and joints hurt so bad I was afraid of falling. I stopped taking it and its only been a full day and I already have so much improvement. This is a deadly drug!!!!