I’ve taken Metformin years ago when I first realized I have type 2. First pill this year then I went on a small slow bike ride. All my muscles felt fatigued, especially my heart. My heart rate went down to 70. Normally it is supposed to be higher from Metformin. I often ride 20 miles and run 5 miles. Is there a possible connection between these symptoms and one dosage of 500mg? What else could it be?
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